CN114200701A - Display panel, control method thereof, electronic device, and storage medium - Google Patents
Display panel, control method thereof, electronic device, and storage medium Download PDFInfo
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- CN114200701A CN114200701A CN202010870089.2A CN202010870089A CN114200701A CN 114200701 A CN114200701 A CN 114200701A CN 202010870089 A CN202010870089 A CN 202010870089A CN 114200701 A CN114200701 A CN 114200701A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
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- Crystallography & Structural Chemistry (AREA)
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The disclosure relates to a display panel, a control method thereof, an electronic device, and a storage medium. The display panel includes: the backlight module is provided with a through hole; the fingerprint identification module is arranged corresponding to the through hole; the display module is stacked above the backlight module; the display module assembly include with the regional printing opacity passageway that corresponds of fingerprint identification that the fingerprint identification module corresponds, the printing opacity passageway is used for seeing through towards the original light signal that the object to be measured sent and/or the object to be measured is based on original light signal to the fingerprint light signal that the fingerprint identification module reflection was returned. So that on the one hand the stacking thickness of the display panel can be reduced; on the other hand does not pass through backlight unit because the fingerprint light signal who reachs the fingerprint identification module, and backlight unit just can not influence fingerprint light signal's route, can not influence fingerprint identification's the degree of accuracy.
Description
Technical Field
The present disclosure relates to the field of electronic product technologies, and in particular, to a display panel, a control method thereof, an electronic device, and a storage medium.
Background
At present, the identification of the finger print under the screen is mainly applied to an Organic Light-emitting diode (OLED) display module, and the principle is as follows: the OLED display module has good light transmittance and receives reflected light detection fingerprints formed after the reflected light is reflected by fingers and sent by the OLED display module. However, the cost of the OLED display module is high, and the OLED display module cannot be widely used.
Because the light-emitting principle and structure of a Liquid Crystal Display (LCD) Display module are different from those of an OLED Display module, how to use the underscreen fingerprint identification for the LCD Display module to reduce the overall cost becomes a problem to be solved urgently.
Disclosure of Invention
The present disclosure provides a display panel, a control method thereof, an electronic device, and a storage medium to solve the disadvantages of the related art.
According to a first aspect of embodiments of the present disclosure, there is provided a display panel including:
the backlight module is provided with a through hole;
the fingerprint identification module is arranged corresponding to the through hole;
the display module is stacked above the backlight module; the display module assembly include with the regional printing opacity passageway that corresponds of fingerprint identification that the fingerprint identification module formed, the printing opacity passageway is used for seeing through towards the original light signal that the object to be measured sent and/or the object to be measured is based on original light signal to the fingerprint light signal that the fingerprint identification module reflection was returned.
Optionally, the display module includes:
the first liquid crystal layer is provided with a light-transmitting through hole, and the light-transmitting through hole serves as at least part of the light-transmitting channel.
Optionally, the display module further includes:
and the first control unit is used for electrifying the first liquid crystal layer under the condition that the fingerprint identification module carries out fingerprint identification so as to form the light-transmitting channel in the display module.
Optionally, the display module further includes: the liquid crystal display panel comprises a first polaroid and a second polaroid, wherein the first liquid crystal layer is arranged between the first polaroid and the second polaroid, and the absorption axis of the first polaroid is perpendicular to the absorption axis of the second polaroid.
Optionally, the method further comprises:
the infrared lamp is arranged in the through hole and used for sending the original optical signal under the condition that the fingerprint identification module carries out fingerprint identification.
Optionally, the method further comprises:
the light supplementing lamp is arranged in the through hole and used for supplementing light to the display module under the condition that the display module is in a display state.
Optionally, the method further comprises:
and the second liquid crystal layer is positioned between the display module and the fingerprint identification module and is used for switching between an atomization state and a light transmission state.
Optionally, the method further comprises:
the second control unit is used for electrifying the second liquid crystal layer under the condition that the fingerprint identification module carries out fingerprint identification so as to enable the original optical signal and/or the fingerprint optical signal to penetrate through the second liquid crystal layer in a transparent state; and/or, be used for being in the fingerprint identification module stops giving under the condition that finishes fingerprint identification the second liquid crystal layer circular telegram to the second liquid crystal layer that makes to be in atomizing state shelters from the fingerprint identification module.
Optionally, the second liquid crystal layer in the atomized state is further configured to guide light from a light source provided by the backlight module to the display module.
Optionally, the second liquid crystal layer includes cholesteric liquid crystal molecules.
According to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including the display panel of any one of the above.
According to a third aspect of the embodiments of the present disclosure, there is provided a control method of a display panel, applied to any one of the display panels described above, the method including:
determining to perform fingerprint identification operation;
control form the printing opacity passageway in the display module assembly to see through the original light signal that sends towards the object to be measured and/or the object to be measured is based on original light signal to the fingerprint light signal that the fingerprint identification module reflection returns, the printing opacity passageway with the fingerprint identification region that the fingerprint identification module formed is corresponding.
Optionally, the display module includes a first liquid crystal layer, and controls a light-transmitting channel formed in the display module, including:
and electrifying the first liquid crystal layer to form the light-transmitting channel.
Optionally, the display panel further comprises a second liquid crystal layer, the method further comprising:
under the condition that the fingerprint identification module carries out fingerprint identification, the second liquid crystal layer is electrified so that the original optical signal and/or the fingerprint optical signal can penetrate through the second liquid crystal layer in a transparent state; and/or the presence of a gas in the gas,
under the condition that the fingerprint identification module finishes fingerprint identification, the second liquid crystal layer is stopped to be electrified so that the second liquid crystal layer in an atomization state can shield the fingerprint identification module.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the control method of the display panel of any one of the above.
According to a fifth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of controlling a display panel of any one of the above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in this embodiment, dig the region that corresponds with the fingerprint identification module among the backlight unit empty, the through-hole setting that the fingerprint identification module corresponds backlight unit, because the fingerprint light signal who reachs the fingerprint identification module does not pass through backlight unit, backlight unit just can not exert an influence to the route of fingerprint light signal, can not influence fingerprint identification's the degree of accuracy.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic cross-sectional structure diagram of a display panel according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional structure diagram of another display panel shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional structure diagram of another display panel shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 4 is a schematic cross-sectional structure diagram of another display panel shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 5 is a schematic cross-sectional structure diagram of another display panel shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional structure diagram of another display panel shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 7 is a flowchart illustrating a method of controlling a display panel according to an exemplary embodiment of the present disclosure;
fig. 8 is a block diagram illustrating a control apparatus for a display panel according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a schematic cross-sectional structure diagram of a display panel shown in the present disclosure according to an exemplary embodiment, and the display panel may include: display module assembly 1, backlight unit 2, fingerprint identification module assembly 3, glass apron 4 and optical cement 5. Glass apron 4, optical cement 5, display module assembly 1 and backlight unit 2 stack the setting in proper order. Backlight unit 2 is equipped with through-hole 21, and fingerprint identification module 3 corresponds the through-hole 21 setting.
In one embodiment, at least a portion of the fingerprint identification module 3 may be disposed in the through hole in consideration of reducing the stacking thickness of the display panel. It can be understood that, the part of the fingerprint identification module that locates in the through-hole is relevant with the size of fingerprint identification module and backlight unit's thickness, if backlight unit's thickness is greater than the height of fingerprint identification module, then the fingerprint identification module can be arranged in the through-hole completely.
The display module 1 may include a first polarizer 11, a color filter 12, a first liquid crystal layer 13, a TFT (thin film transistor) substrate 14, and a second polarizer 15 stacked in this order. The first liquid crystal layer 13 includes liquid crystal molecules 131 and encapsulation films between which the liquid crystal molecules are encapsulated. The absorption axis of the first polarizer 11 and the absorption axis of the second polarizer 15 may be perpendicular to each other, so as to achieve the purpose of selective filtering.
The backlight module 2 provides a light source for the display module 1, and the backlight module may include a lamp tube, a reflective plate, a light guide plate, a prism sheet, a diffusion plate, etc., the lamp tube is a main light emitting component, the light emitted from the lamp tube is distributed everywhere by the light guide plate, the reflective plate may limit the light to be emitted only in the direction of the display module, and finally the light is uniformly distributed to each area of the display module by the prism sheet and the diffusion plate, and a uniform and bright light source is provided for the display module.
Because the liquid crystal molecules in the first liquid crystal layer 13 are disorderly arranged when not powered on, light can be prevented from passing through, and if the original optical signal sent towards the object to be detected and the fingerprint optical signal reflected by the object to be detected based on the original optical signal can not pass through the first liquid crystal layer, fingerprint identification can not be carried out.
Based on above-mentioned condition, the display module assembly 1 of this embodiment still includes the printing opacity passageway (the region that two vertical dotted lines enclose in the picture) that corresponds with the fingerprint identification regional A that fingerprint identification module 3 formed, and this printing opacity passageway can see through the original light signal that sends towards the object to be measured and/or the fingerprint light signal that the object to be measured reflects back to the fingerprint identification module based on original light signal. Referring to fig. 1, when the object to be measured, for example, finger 6, is placed on glass apron 4 and is located the fingerprint identification area a that forms with the fingerprint identification module, the fingerprint identification module can carry out fingerprint identification according to fingerprint optical signal.
In an embodiment, see fig. 1, can set up printing opacity through-hole 132 at first liquid crystal layer, printing opacity through-hole 132 is regional corresponding with the fingerprint identification that fingerprint identification module 3 formed, as at least part of the printing opacity passageway of display module 1, there is not the liquid crystal in the printing opacity passageway, just can not prevent the passing through of original light signal and fingerprint light signal yet, thereby can ensure when fingerprint identification, original light signal can reach the object to be measured through printing opacity passageway, the object to be measured can reach fingerprint identification module 3 through printing opacity passageway based on the fingerprint light signal that original light signal reflects back simultaneously, so that fingerprint identification module 3 carries out fingerprint identification based on fingerprint light signal.
In another embodiment, the characteristic that the liquid crystal is energized to allow light to pass through easily can be utilized to transmit the original light signal and the fingerprint light signal, and in particular, the display module further includes a first control unit (not shown). When carrying out fingerprint identification, first control unit is circular telegram for first liquid crystal layer, the liquid crystal molecule in the first liquid crystal layer of circular telegram back arranges and becomes in order, the liquid crystal molecule all is vertical arrangement, the regional printing opacity passageway that forms with the regional correspondence of fingerprint identification in the display module, make light pass through easily, thereby ensure that original light signal can arrive through the printing opacity passageway and wait to discern the finger, the object to be measured can arrive fingerprint identification module 3 through the printing opacity passageway based on the fingerprint light signal that original light signal reflection returned simultaneously, so that fingerprint identification module 3 carries out fingerprint identification based on fingerprint light signal.
Because the display panel needs the backlight module to give out light, and light guide plate and prismatic lens of the backlight module, etc. can influence the route of the fingerprint optical signal, influence the reading of the fingerprint optical signal, dig the area corresponding to fingerprint identification module in the backlight module in this embodiment, locate the fingerprint identification module in the through hole of the backlight module, on one hand because the fingerprint optical signal that reaches the fingerprint identification module does not pass through the backlight module, the backlight module will not produce the influence to the route of the fingerprint optical signal, therefore the backlight module will not weaken the luminance of the fingerprint optical signal no matter what material it uses, will not influence the accuracy of fingerprint identification, thus the backlight module can choose arbitrary material, must not necessarily choose the expensive, the backlight material of the permeable infrared ray to realize the fingerprint identification under the screen; on the other hand, the fingerprint identification module is arranged in the through hole of the backlight module, so that the stacking thickness of the display panel can be reduced.
Since the polarizer may affect the transmittance of light, further, in order to improve the transmittance, on the basis of the display panel shown in fig. 1, the regions corresponding to the fingerprint identification region in the first polarizer 11 and the second polarizer 15 may be hollowed out, referring to fig. 3, the through hole 111 of the first polarizer, the through hole 151 of the second polarizer 15, and the light-transmitting through hole 132 form a light-transmitting channel, so that the fingerprint optical signal may be transmitted to the fingerprint identification module through the light-transmitting channel in a collimated manner.
Similarly, on the basis of the display panel shown in fig. 2, the regions corresponding to the fingerprint identification region in the first polarizer 11 and the second polarizer 15 may also be hollowed, referring to fig. 4, during fingerprint identification, the first liquid crystal layer 13 is powered on, and the through holes 111 of the first polarizer 11, the through holes 151 of the second polarizer 15, and the vertically arranged liquid crystal channels form light transmission channels, so that the fingerprint optical signal can be transmitted to the fingerprint identification module through the light transmission channels in a collimated manner. The optical adhesive in the through hole 111 of the first polarizer 11 hardly influences the path of the fingerprint optical signal.
Because fingerprint identification module set does not have other subassemblies between fingerprint identification module set and the display module set in locating backlight unit's through-hole, at the in-process that does not carry out fingerprint identification, the user can see the fingerprint identification module set through the display module set, and the fingerprint identification is regional can't realize normal demonstration, consequently can set up the liquid crystal layer between fingerprint identification module set and display module set. Fig. 5 is a schematic cross-sectional structure diagram of another display panel according to an exemplary embodiment of the disclosure, and based on the display panel shown in fig. 3, the display panel of this embodiment further includes a second liquid crystal layer 7 and a second control unit (not shown in the figure), the second liquid crystal layer is located between the fingerprint identification module and the display module, and the second control unit enables the second liquid crystal layer to be switched between the fogging state and the light-transmitting state by powering on or powering off the second liquid crystal layer.
When fingerprint identification is carried out to the fingerprint identification module, the second control unit is electrified for the second liquid crystal layer, makes the liquid crystal molecule in the second liquid crystal layer arrange and becomes in order, and the liquid crystal molecule all is vertical arrangement, and the second liquid crystal layer is in the printing opacity state, can see through original light signal and fingerprint light signal for fingerprint identification can normally go on.
When the fingerprint identification module finishes fingerprint identification, the second control unit stops electrifying the second liquid crystal layer, the liquid crystal molecules of the second liquid crystal layer are arranged disorderly and are in an atomization state, and at the moment, the second liquid crystal layer can hide the fingerprint identification module on one hand, so that a fingerprint identification area can be normally displayed; on the other hand, the second liquid crystal layer in the atomized state can enable light rays of a light source provided by the backlight module to be transmitted through the second liquid crystal layer in a non-collimated mode, and the second liquid crystal layer can play a role of a light guide plate. The liquid crystal molecules in the second liquid crystal layer can be but not limited to cholesteric liquid crystal, and when the second liquid crystal layer is not electrified, light rays of a light source of the backlight module can penetrate through the second liquid crystal layer.
Fig. 6 is a schematic cross-sectional structure diagram of another display panel according to an exemplary embodiment of the disclosure, and based on the display panel shown in fig. 4, the display panel of this embodiment further includes a second liquid crystal layer 7 and a second control unit (not shown in the figure), between the fingerprint identification module and the display module, the second control unit enables the second liquid crystal layer to switch between the atomizing state and the light-transmitting state by powering on or powering off the second liquid crystal layer.
When fingerprint identification is carried out to the fingerprint identification module, first the control unit is for the second liquid crystal layer circular telegram, and the second the control unit is for the second liquid crystal layer circular telegram, refers to fig. 6, and the liquid crystal molecule in the liquid crystal layer in the first liquid crystal layer and the liquid crystal molecule in the second liquid crystal layer all are vertical arrangement, and first liquid crystal layer and second liquid crystal layer all are in the printing opacity state, can see through original light signal and fingerprint light signal for fingerprint identification can normally go on.
When the fingerprint identification module finishes fingerprint identification, the second control unit stops electrifying the second liquid crystal layer, the liquid crystal molecules of the second liquid crystal layer are arranged disorderly and are in an atomization state, and at the moment, the second liquid crystal layer can hide the fingerprint identification module on one hand, so that a fingerprint identification area can be normally displayed; on the other hand, the second liquid crystal layer in the atomized state can enable light rays of a light source provided by the backlight module to be transmitted through the second liquid crystal layer in a non-collimated mode and led out to the display module, and the second liquid crystal layer can play a role of a light guide plate. According to the image display requirement, the first control unit can apply voltage to the TFT substrate according to the image signal required to be displayed, and the deflection angle of the liquid crystal molecules of the first liquid crystal layer is controlled by the voltage so as to control the brightness of light passing through the first liquid crystal layer, form different gray scales and display images on the display panel.
It should be noted that the second liquid crystal layer may be spread over the entire display panel, or may be spread only at a position corresponding to the through hole of the backlight module to cover the through hole of the backlight module. The first control unit and the second control unit can be realized by one control chip, and can also be realized by two control chips to realize corresponding functions.
In another embodiment, a liquid crystal layer may also be added to the display panel shown in fig. 1 and fig. 2, and the laying mode, position and control mechanism of the added liquid crystal layer are similar to those in fig. 5 and fig. 6, and are not described herein again.
Increase one deck liquid crystal layer in display panel, can play the effect of hiding the fingerprint identification module when no measured object touch-control discernment is regional for display panel can normally show when not carrying out fingerprint identification, and the thickness of newly-increased liquid crystal layer can generally not exceed 0.2mm, can not bring great influence for display panel thickness.
Because backlight unit can't provide normal light source for the region of the display module assembly who faces backlight unit's through-hole 21 for there is difference in this regional actual display effect and periphery, can influence user experience, in another embodiment, can set up the light filling lamp in the through-hole of backlight, the internal face of through-hole can be located to the light filling lamp, with under fingerprint identification module is in non-fingerprint identification's state, starts the light filling lamp, carries out the light filling to the display area that the printing opacity passageway corresponds. The light supplement lamp can be realized by adopting an LED but not limited to the LED.
Because infrared light's penetrability is better, in another embodiment, can set up the infrared lamp in backlight unit's through-hole, the internal face of through-hole can be located to the infrared lamp, when carrying out fingerprint identification, the infrared lamp starts, and the infrared light of transmission is as the original light signal that is used for fingerprint identification.
The number of the light supplement lamps and the number of the infrared lamps are not limited to one, and the number can be set according to actual requirements. If set up a plurality of infrared lamps and/or a plurality of light filling lamps, a plurality of infrared lamps, a plurality of light filling lamps can be even, the dispersive arrangement at the internal face of through-hole.
The present disclosure also provides an electronic device, which includes the display panel shown in any of the above embodiments, and the electronic device may be, but is not limited to, a mobile phone, a PAD (PAD), an electronic lock, and the like, which are related to an LCD terminal requiring fingerprint unlocking. Use electronic equipment as the cell-phone as an example, the fingerprint identification module is not limited to and arranges in the cell-phone below, can be with the fingerprint identification module overall arrangement at the leading camera next door of cell-phone to avoid setting up the fingerprint identification module in the screen below, the screen below is located to corresponding backlight unit's through-hole, the normal light-emitting condition of influence display light source that leads to takes place, can not arrange to cause the influence to charging mouth, loudspeaker, earphone hole, platelet etc. of cell-phone yet like this. Here, deviations of the location display of the fingerprint identification area from other locations may also be weakened by UI (user page) design.
The present disclosure also provides a control method of a display panel, which is applied to the display panel shown in any of the above embodiments, and the method includes: when confirming to carry out the fingerprint identification operation, form the printing opacity passageway in the control display module assembly to the original light signal that the transmission orientation object sent and/or the object that awaits measuring reflects back to the fingerprint identification module assembly based on original light signal.
Optionally, the fingerprint identification operation may be determined by any one of the following manners: when the proximity sensor detects that a finger approaches; when the pressure sensor detects that the display panel receives a pressure signal; when the electronic equipment to which the display panel belongs is in a fingerprint input mode, a fingerprint identification mode and the like.
Fig. 7 is a flowchart illustrating a control method of a display panel according to an exemplary embodiment of the present disclosure to implement the off-screen fingerprint recognition based on the display panels illustrated in fig. 2 and 4, and referring to fig. 7, the method may include the following steps:
and step 701, electrifying the first liquid crystal layer under the condition that the detected object is close to the fingerprint identification area.
In an embodiment, can be but not limited to whether there is the measurand to be close to the fingerprint identification region through distance sensor detection, if it is close to the fingerprint identification region to detect the measurand, need the fingerprint identification module to carry out fingerprint identification, then for first liquid crystal layer circular telegram, make the liquid crystal molecule in the first liquid crystal layer all be vertical arrangement, make light pass through easily, form the printing opacity passageway in display module this moment, can reach the finger of treating discerning through the printing opacity passageway with ensureing original light signal, the object of awaiting measuring can reach the fingerprint identification module through the printing opacity passageway based on the fingerprint light signal that original light signal reflection returned simultaneously, thereby the fingerprint identification module can carry out fingerprint identification based on fingerprint light signal.
And step 702, stopping electrifying the first liquid crystal layer under the condition that the detected object is far away from the fingerprint identification area.
If the measured object is far away from the fingerprint identification area, the fingerprint identification module is not needed to carry out fingerprint identification, and the first liquid crystal layer can be stopped to be electrified, so that the energy consumption is saved. Of course, it is also possible to apply a corresponding voltage to the TFT substrate according to the received image signal, and control the deflection angle of the liquid crystal molecules of the first liquid crystal layer by the voltage, so as to display an image on the display panel.
If the off-screen fingerprint recognition is realized based on the display panel shown in fig. 5, in the case where it is detected that the object to be measured is close to the fingerprint recognition area, the second liquid crystal layer is energized. In the case where it is detected that the object to be measured is away from the fingerprint recognition area, the energization to the second liquid crystal layer is stopped. And the energizing mechanism of the first liquid crystal layer is determined according to the received image signal.
When the fingerprint recognition under the screen is realized based on the display panel shown in fig. 6, the first liquid crystal layer and the second liquid crystal layer are simultaneously energized when the approach of the object to be measured to the fingerprint recognition area is detected. Stopping energizing the second liquid crystal layer in the case of detecting that the object to be measured is far away from the fingerprint identification area; and the energizing mechanism of the first liquid crystal layer is determined according to the received image signal.
For the method embodiments, since they substantially correspond to the apparatus embodiments, reference may be made to the apparatus embodiments for relevant portions of the description.
An embodiment of the present disclosure also provides an electronic device, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the control method of the display panel according to any of the above embodiments.
Embodiments of the present disclosure also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the control method of the display panel according to any of the above embodiments.
Fig. 8 is a block diagram illustrating a control apparatus for a display panel according to an embodiment of the present disclosure. The apparatus may be a mobile telephone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.
As shown in fig. 8, the apparatus 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816. The apparatus further includes an antenna module (e.g., connectable to the communication assembly 816), the antenna module including: a radiator 1, a ground point 2, a feed terminal 3, and a resonant circuit 4. Wherein, radiator 1 includes open end 11, and ground point 2 sets up on radiator 1. The feed terminal 3 is electrically connected to a first connection point 5 on the radiator 1. A first end 41 of the resonant circuit is electrically connected to the first connection point 5 and a second end 42 of the resonant circuit is connected to ground, the resonant circuit 4 comprising an adjustable unit. The distance of the first connection point 5 to the open end 11 is smaller than the distance of the first connection point 5 to the ground point 2.
The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include the display panel of any of the embodiments described above, and the display panel may receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the methods described in any of the above embodiments.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (16)
1. A display panel, comprising:
the backlight module is provided with a through hole;
the fingerprint identification module is arranged corresponding to the through hole;
the display module is stacked above the backlight module; the display module assembly include with the regional printing opacity passageway that corresponds of fingerprint identification that the fingerprint identification module formed, the printing opacity passageway is used for seeing through towards the original light signal that the object to be measured sent and/or the object to be measured is based on original light signal to the fingerprint light signal that the fingerprint identification module reflection was returned.
2. The display panel according to claim 1, wherein the display module comprises:
the first liquid crystal layer is provided with a light-transmitting through hole, and the light-transmitting through hole serves as at least part of the light-transmitting channel.
3. The display panel of claim 2, wherein the display module further comprises:
and the first control unit is used for electrifying the first liquid crystal layer under the condition that the fingerprint identification module carries out fingerprint identification so as to form the light-transmitting channel in the display module.
4. The display panel according to claim 2 or 3, wherein the display module further comprises: the liquid crystal display panel comprises a first polaroid and a second polaroid, wherein the first liquid crystal layer is arranged between the first polaroid and the second polaroid, and the absorption axis of the first polaroid is perpendicular to the absorption axis of the second polaroid.
5. The display panel according to claim 1, further comprising:
the infrared lamp is arranged in the through hole and used for sending the original optical signal under the condition that the fingerprint identification module carries out fingerprint identification.
6. The display panel according to claim 1, further comprising:
the light supplementing lamp is arranged in the through hole and used for supplementing light to the display module under the condition that the display module is in a display state.
7. The display panel according to claim 1 or 2, characterized by further comprising:
and the second liquid crystal layer is positioned between the display module and the fingerprint identification module and is used for switching between an atomization state and a light transmission state.
8. The display panel according to claim 7, further comprising:
the second control unit is used for electrifying the second liquid crystal layer under the condition that the fingerprint identification module carries out fingerprint identification so as to enable the original optical signal and/or the fingerprint optical signal to penetrate through the second liquid crystal layer in a transparent state; and/or, be used for being in the fingerprint identification module stops giving under the condition that finishes fingerprint identification the second liquid crystal layer circular telegram to the second liquid crystal layer that makes to be in atomizing state shelters from the fingerprint identification module.
9. The display panel of claim 7, wherein the second liquid crystal layer in the atomized state is further configured to guide light from a light source provided by the backlight module to the display module.
10. A display panel as claimed in any one of claims 7 to 9 wherein the second liquid crystal layer comprises cholesteric liquid crystal molecules.
11. An electronic device, characterized in that the electronic device comprises a display panel according to any one of claims 1-10.
12. A control method of a display panel applied to the display panel according to any one of claims 1 to 10, the method comprising:
determining to perform fingerprint identification operation;
control form the printing opacity passageway in the display module assembly to see through the original light signal that sends towards the object to be measured and/or the object to be measured is based on original light signal to the fingerprint light signal that the fingerprint identification module reflection returns, the printing opacity passageway with the fingerprint identification region that the fingerprint identification module formed is corresponding.
13. The method as claimed in claim 12, wherein the display module includes a first liquid crystal layer, and the controlling of the formation of the light-transmitting channel in the display module comprises:
and electrifying the first liquid crystal layer to form the light-transmitting channel.
14. The method for controlling a display panel according to claim 12 or 13, wherein the display panel further includes a second liquid crystal layer, the method further comprising:
under the condition that the fingerprint identification module carries out fingerprint identification, the second liquid crystal layer is electrified so that the original optical signal and/or the fingerprint optical signal can penetrate through the second liquid crystal layer in a transparent state; and/or the presence of a gas in the gas,
under the condition that the fingerprint identification module finishes fingerprint identification, the second liquid crystal layer is stopped to be electrified so that the second liquid crystal layer in an atomization state can shield the fingerprint identification module.
15. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the control method of the display panel of any one of claims 12 to 14.
16. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, carries out the steps of the method of controlling a display panel of any one of claims 12 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870089.2A CN114200701A (en) | 2020-08-26 | 2020-08-26 | Display panel, control method thereof, electronic device, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870089.2A CN114200701A (en) | 2020-08-26 | 2020-08-26 | Display panel, control method thereof, electronic device, and storage medium |
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| Publication Number | Publication Date |
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| CN114200701A true CN114200701A (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010870089.2A Pending CN114200701A (en) | 2020-08-26 | 2020-08-26 | Display panel, control method thereof, electronic device, and storage medium |
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| US20190065810A1 (en) * | 2017-02-27 | 2019-02-28 | Boe Technology Group Co., Ltd. | Optical fingerprint identification assembly, display panel and display apparatus |
| CN109613756A (en) * | 2019-01-29 | 2019-04-12 | 华勤通讯技术有限公司 | LCD display, electronic equipment and control system |
| CN110161749A (en) * | 2019-05-10 | 2019-08-23 | 武汉华星光电技术有限公司 | Applied to the panel device for shielding lower camera |
| CN110941112A (en) * | 2017-04-25 | 2020-03-31 | 华为技术有限公司 | LCD display screen, electronic equipment and manufacturing method of LCD display screen |
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- 2020-08-26 CN CN202010870089.2A patent/CN114200701A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190065810A1 (en) * | 2017-02-27 | 2019-02-28 | Boe Technology Group Co., Ltd. | Optical fingerprint identification assembly, display panel and display apparatus |
| CN110941112A (en) * | 2017-04-25 | 2020-03-31 | 华为技术有限公司 | LCD display screen, electronic equipment and manufacturing method of LCD display screen |
| CN109613756A (en) * | 2019-01-29 | 2019-04-12 | 华勤通讯技术有限公司 | LCD display, electronic equipment and control system |
| CN110161749A (en) * | 2019-05-10 | 2019-08-23 | 武汉华星光电技术有限公司 | Applied to the panel device for shielding lower camera |
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