Disclosure of Invention
The application provides a display panel, a display device, a data processing method and a medium, which can enable the display panel to obtain complete fingerprint images and further improve fingerprint identification precision.
In a first aspect, the present application provides a display panel comprising: the display device comprises a display component, a line light source component, an image sensing component and a processing component, wherein the display component is positioned on the light emitting side of the line light source component, and the image sensing component is positioned on one side of the line light source component, which is far away from the display component;
the image sensing assembly is used for imaging the light rays reflected by the fingerprint to be detected and emitted by the linear light source assembly;
the processing component is connected with the linear light source component and used for controlling the lighting state of the linear light source component according to the imaging parameters of the image sensing component stored in advance.
Optionally, the line light source assembly includes: a plurality of line light sources;
the plurality of linear light sources are arranged in parallel.
Optionally, the imaging of the image sensing assembly by the reflection of the light emitted by each linear light source through the fingerprint to be measured includes: an imaging region and a non-imaging region;
the imaging parameters include: the image sensor comprises a width of an imaging area, a width of a non-imaging area and a magnification of an image sensing assembly, wherein the magnification of the image sensing assembly is equal to the ratio of the width of the non-imaging area to the width of the line light source.
Optionally, the processing assembly is specifically configured to control the lighting of the line light source assembly M times, and light N line light sources each time;
where N is not less than 2, M is 2 × (2a + b)/(3a/M), a is half the width of the image forming region, b is the width of the non-image forming region, and M is the magnification.
Optionally, for each of the N linear light sources that are turned on, the distance between two images formed by the image sensing assembly through reflection of the fingerprint to be detected by the light emitted by the adjacent linear light sources is equal to 0.
Optionally, the display assembly comprises: the OLED display device comprises a first substrate, a thin film transistor array and an organic diode OLED light-emitting element;
the first substrate is located on one side, close to the linear light source assembly, of the thin film transistor array, and the OLED light emitting element is located on one side, far away from the linear light source assembly, of the thin film transistor array.
Optionally, the display assembly further comprises: the packaging structure comprises a packaging layer, a polaroid and a cover plate;
the packaging layer is located on one side, away from the linear light source assembly, of the OLED light-emitting element, the polaroid is located on one side, away from the linear light source assembly, of the packaging layer, and the cover plate is located on one side, away from the linear light source assembly, of the polaroid.
Optionally, the display panel further comprises: a second substrate;
the second substrate is positioned between the image sensing assembly and the display assembly.
Optionally, each line light source is composed of a light emitting layer of an OLED light emitting element;
the second substrate is positioned on one side of the linear light source assembly close to the image sensing assembly.
Optionally, the line light source comprises: a micro light emitting diode;
the second substrate is positioned on one side of the linear light source assembly, which is far away from the image sensing assembly.
Optionally, the image sensing assembly comprises: a plurality of sensing units; the plurality of sensing units are arranged in an array.
Optionally, the width of the linear light source is 0.1-0.3 mm, and the thickness of the linear light source is 0.1-0.15 mm.
In a second aspect, the present application provides a display device comprising: the display panel is provided.
In a third aspect, the present application provides a data processing method applied to the display panel, where the method includes:
and controlling the lighting state of the linear light source assembly according to the imaging parameters of the image sensing assembly stored in advance.
In a fourth aspect, the present application provides a medium having stored thereon a computer program executable on a processor, the computer program, when executed by the processor, implementing the steps of the data processing method described above.
The present application provides a display panel, a display device, a data processing method and a medium, wherein the display panel includes: the display assembly is positioned on the light emitting side of the linear light source assembly, and the image sensing assembly is positioned on one side of the linear light source assembly, which is far away from the display assembly; the image sensing assembly is used for imaging the light rays reflected by the fingerprint to be detected and emitted by the linear light source assembly; and the processing assembly is connected with the linear light source assembly and is used for controlling the lighting state of the linear light source assembly according to the imaging parameters of the image sensing assembly stored in advance. The processing assembly can enable the display panel to obtain the complete fingerprint image according to the lighting state of the imaging parameter control line light source assembly, and then the fingerprint identification precision is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification, claims, and drawings.
Detailed Description
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
Unless defined otherwise, technical or scientific terms used in the disclosure of the embodiments of the present invention should have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar language in the embodiments of the present invention does not denote any order, quantity, or importance, but rather the terms "first," "second," and similar language are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the related art, the light source disposed in the display panel with the fingerprint identification function may be a line light source, a fingerprint may be divided into a plurality of fingerprint units, different fingerprint units are used to reflect light emitted by different line light sources, light emitted by different line light sources is reflected by corresponding fingerprint units to form an image on the image sensor, fig. 1 is a schematic diagram of a fingerprint identification principle in the related art, fig. 2A is a top view of a fingerprint unit during fingerprint identification, fig. 2B is a schematic diagram of an image formed by the fingerprint unit on the image sensor provided in fig. 2A, as shown in fig. 1 to 2, light emitted by the linelight source 1 irradiates thecorresponding fingerprint unit 2, and a certain magnification ratio is provided between a size of the image formed on theimage sensor 3 by the light emitted by the linelight source 1 reflected by thefingerprint unit 1 and a size of thefingerprint unit 2.
Specifically, when adopting the line source to carry out fingerprint identification, if light a plurality of line sources simultaneously and carry out fingerprint collection, need guarantee that the light of every line source transmission does not influence each other through the image that the fingerprint reflection formed on image sensor, consequently, the fingerprint unit that image sensor in the correlation technique gathered does not have the vacancy in succession for the fingerprint image that obtains is incomplete, and then has reduced the fingerprint identification precision.
In order to solve the foregoing technical problem, embodiments of the present application provide a display panel, a display device, a data processing method, and a medium, which are specifically described as follows:
some embodiments of the present application provide a display panel, and fig. 3 is a schematic structural diagram of the display panel provided in the embodiments of the present application, and as shown in fig. 3, the display panel provided in the embodiments of the present application includes: thedisplay component 10, the linelight source component 20, theimage sensing component 30 and theprocessing component 40, the display component is located on the light-emitting side of the line light source component, and the image sensing component is located on the side, away from the display component, of the line light source component.
Specifically, theimage sensing assembly 30 is used for imaging the light reflected by the fingerprint to be detected and emitted by the linearlight source assembly 20; and theprocessing assembly 40 is connected with the linearlight source assembly 20 and is used for controlling the lighting state of the linearlight source assembly 20 according to the imaging parameters of the image sensing assembly stored in advance.
Specifically, a person skilled in the art may design the specific structure of thedisplay module 10 accordingly according to the specific type of the display module, and optionally, thedisplay module 10 may be an organic light emitting diode OLED display panel.
In this embodiment, theprocessing module 40 is connected to the linearlight source module 20 by communication. In particular, the communication connection includes a connection via a wireless network, a wired network, and/or any combination of wireless and wired networks. The network may include a local area network, the internet, a telecommunications network, an internet of things based on the internet and/or a telecommunications network, and/or any combination of the above, and/or the like. The wired network may use wires, twisted pair wires, coaxial cable or optical fiber transmission to transmit information, and the wireless network may use WWAN mobile communication network, bluetooth, Zigbee or WiFi. Optionally, fig. 4 is a schematic structural diagram of a display panel provided in the embodiment of the present application, and as shown in fig. 4, the linelight source assembly 20 of the display panel provided in the embodiment of the present application includes: a plurality of line light sources; the plurality of line light sources are arranged in parallel, and theimage sensing assembly 30 includes: a plurality of sensingunits 300; a plurality of sensingunits 300 are arranged in an array.
Optionally, the imaging of the image sensing assembly by the reflection of the light emitted by each linear light source through the fingerprint to be measured includes: an imaging region and a non-imaging region.
Specifically, the imaging parameters include: thewidth 2a of the imaging area, the width b of the non-imaging area and the magnification M of the image sensing assembly, wherein the magnification M of the image sensing assembly is equal to the ratio of the width b of the non-imaging area to the width of the line light source.
Optionally, the processing assembly is specifically configured to control the lighting of the line light source assembly M times, and light N line light sources each time; where N is not less than 2, M is 2 × (2a + b)/(3a/D), a is half the width of the image forming region, b is the width of the non-image forming region, and D is the magnification. Optionally, for the N linear light sources that are turned on each time, the distance between two images formed by the image sensing assembly through reflection of the fingerprint to be detected by the light emitted by the adjacent linear light sources is equal to 0, that is, the images formed by the plurality of linear light sources that are turned on each time by the processing assembly are not affected by each other.
Specifically, Ti represents the time when the line light source assembly is lit for the ith time, and the distance between two adjacent lit line light sources when the line light source assembly is lit for each time indicated by 2a + b; the T1 moment refers to the size of the fingerprint collected by the image sensing assembly being 2a/M when two line light sources are turned on, the collected fingerprint must be supplemented with the fingerprint not collected at the T1 moment when the other two line light sources are turned on at the T2 moment, and the 3a/M moment refers to the size of the fingerprint collected at the T1 moment and the T2 moment between the two luminous line light sources.
Specifically, the processing assembly obtains the line sources that the formation of image does not influence each other according to the imaging parameter, then judges whether the fingerprint size that two adjacent formation of image line sources that do not influence each other gathered can satisfy the fingerprint identification precision, if satisfy, then confirm to light two line sources at every turn, then unsatisfied, then judge whether the fingerprint that a plurality of adjacent formation of image line sources that do not influence each other gathered can satisfy the fingerprint identification precision, the number of the line sources that light at every turn satisfies the fingerprint identification precision.
Optionally, the fingerprint identification precision is used to reflect a size of a fingerprint required for implementing fingerprint unlocking, which is not limited in this embodiment of the present application, and is specifically determined according to actual requirements.
The processing assembly is specifically used for controlling the lighting of the line light source assembly for M times, N line light sources are lighted at each time, the vacancy of fingerprints in the related art can be made up by controlling the line light sources in the mode, the lighting times M of the line light source assembly are obtained through the formula, rapid scanning can be achieved, and then fingerprint identification is achieved through image splicing.
Specifically, M ≧ (4/3) D, where M is a positive integer, i.e., M is at least 4.
It should be noted that N ≧ 2, the value of N is related to the imaging range of the image sensing assembly, and this embodiment of the present application is not limited in any way.
Fig. 6A is a first lighting control diagram provided by the embodiment of the present application, fig. 6B is a second lighting control diagram provided by the embodiment of the present application, fig. 6C is a third lighting control diagram provided by the embodiment of the present application, it should be noted that fig. 6A to 6C are described by taking four times as an example of lighting the linear light source assembly, fig. 6A is described by taking 2 linear light sources as an example of lighting each time, fig. 6B is described by taking 3 linear light sources as an example of lighting each time, and fig. 6C is described by taking 4 linear light sources as an example of lighting each time.
Taking fig. 6A as an example, when a finger touches the display panel, the processing module turns on two line light sources L at time T1, and assuming that the center position coordinate of the first line light source is (x, 0), the center position coordinate of the second line light source is (x, - (2a + b)), and the distance between the two line light sources is 2a + b, at this time, the cut of the collected fingerprint is discontinuous, as can be seen from the above analysis, the size of the fingerprint W collected at time T1 is 2a/M, the image G is the image of the fingerprint W formed by the image sensing module, the processing module turns on two other line light sources at time T2, the fingerprint collected at time T2 is used to compensate the fingerprint not collected at time T1, the center position coordinate of the first line light source turned on at time T2 is (x, -a/M), the center position coordinate of the second line light source is (x, - (2a + b + a/M)), and so on, the processing component lights the two line light sources at the time T3 to make up the fingerprint acquired at the time T2, the processing component lights the two line light sources at the time T4 to make up the fingerprint acquired at the time T3, and after the processing component lights four times, the fingerprint acquired by the image sensing component is continuous and complete.
It should be noted that, in the technical scheme provided in fig. 6A, each time the line light source assembly is turned on, the size of the collected fingerprint is 2a + b. The size of the collected fingerprint is 2 × 2a + B each time the linear light source assembly is lit by the technical scheme provided in fig. 6B, and the size of the collected fingerprint is 3 × 2a + B each time the linear light source assembly is lit by the technical scheme provided in fig. 6C.
It should be noted that when the imaging range of the image sensing assembly is relatively small, that is, the magnification ratio is relatively small, the number of the line light sources that can be lighted is relatively large, and when the imaging range of the image sensing assembly is relatively large, that is, the magnification ratio is relatively large, the number of the line light sources that are lighted is relatively small each time the line light source assembly is lighted.
Optionally, fig. 7 is a schematic structural diagram of a third display panel provided in the embodiment of the present application, and as shown in fig. 7, thedisplay module 10 in the display panel provided in the embodiment of the present application includes: afirst substrate 101, a thinfilm transistor array 102, and an organic diode OLEDlight emitting element 103.
Specifically, thefirst substrate 101 is located on a side of the thinfilm transistor array 102 close to the linelight source assembly 20, and the OLEDlight emitting element 103 is located on a side of the thinfilm transistor array 102 far from the linelight source assembly 20.
Alternatively, thefirst substrate 101 may be a transparent rigid substrate or a flexible substrate, wherein the rigid substrate may be, but is not limited to, one or more of glass, metal sheet; the flexible substrate may be, but is not limited to, one or more of polyethylene terephthalate, ethylene terephthalate, polyetheretherketone, polystyrene, polycarbonate, polyarylate, polyimide, polyvinyl chloride, polyethylene, textile fibers.
Specifically, the OLEDlight emitting element 103 includes: afirst electrode 1031, alight emitting layer 1032, and asecond electrode 1033.
Optionally, thefirst electrode 1031 and thesecond electrode 1032 are transparent electrodes, and are made of a transparent conductive material, such as indium tin oxide or zinc tin oxide, which is not limited in this embodiment of the present application.
Optionally, the thickness of the OLEDlight emitting element 103 is 0.5-1.5 mm.
Optionally, as shown in fig. 7, thedisplay assembly 10 provided in the embodiment of the present application further includes: anencapsulation layer 104, apolarizer 105, and acover 106.
Specifically, theencapsulation layer 104 is located on a side of the OLEDlight emitting element 103 away from the linelight source assembly 20, thepolarizer 105 is located on a side of theencapsulation layer 104 away from the linelight source assembly 20, and thecover plate 106 is located on a side of thepolarizer 105 away from the linelight source assembly 20.
Specifically, thecover 106 is attached to thepolarizer 105 by OCA optical bonding.
Optionally, fig. 8 is a fourth schematic structural diagram of the display panel provided in the embodiment of the present application, and fig. 9 is a fifth schematic structural diagram of the display panel provided in the embodiment of the present application, as shown in fig. 8 and 9, the display panel provided in the embodiment of the present application further includes: and asecond substrate 50, thesecond substrate 50 being positioned between theimage sensing assembly 30 and thedisplay assembly 10.
Alternatively, as an embodiment, as shown in fig. 8, each of the line light sources is composed of alight emitting layer 1032 of an OLED light emitting element; thesecond substrate 50 is positioned at a side of the linelight source assembly 20 adjacent to theimage sensing assembly 30.
Specifically, the distance H from the light emitting layer to the surface of the cover plate is 0.8-0.9 mm. The light emitting layer is composed of a plurality of pixel units distributed in an array, and thus, the line light source is composed of pixel units in a row or a column.
Optionally, the thickness of thelight emitting layer 1032 may be 0.1 to 0.15 mm, so that the linear light source emitted by the light emitting layer with the thickness is reflected at the fingerprint interface between the finger and the cover plate, and then passes through the display assembly and the linear light source assembly to be received by the image sensing assembly, so as to collect the fingerprint.
Optionally, as another embodiment, as shown in fig. 9, the line light source includes: a Micro Light Emitting Diode (Micro LED), and thesecond substrate 50 is located on a side of the lineLight source assembly 20 away from theimage sensor assembly 30.
Specifically, the line light source adopting the micro LED has higher brightness, better luminous efficiency and lower power consumption, and the thickness of the display panel cannot be obviously increased.
Based on the same inventive concept, some embodiments of the present application further provide a display device, including: a display panel.
Alternatively, the display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the present application.
The display panel is provided in the foregoing embodiments, and the implementation principle and the implementation effect are similar, which are not described herein again.
Based on the same inventive concept, some embodiments of the present application further provide a data processing method applied to a display panel, where the data processing method provided by the embodiments of the present application specifically includes the following steps:
and controlling the lighting state of the line light source assembly according to the imaging parameters of the image sensing assembly stored in advance.
Specifically, the control line light source assembly lighting state includes: controlling the lighting line light source assembly M times, and lighting N line light sources each time; where N is not less than 2, M is 2 × (2a + b)/(3a/M), a is half the width of the image forming region, b is the width of the non-image forming region, and M is the magnification.
The data processing method is applied to the display panel provided in the first embodiment, and the implementation principle and the implementation effect are similar, which are not described herein again.
Based on the same inventive concept, some embodiments of the present application further provide a medium on which a computer program is stored, the computer program being executable on a processor, and the computer program, when executed by the processor, implementing the steps of the aforementioned data processing method.
The media are used for implementing the steps of the data processing method provided in the foregoing embodiment, and the implementation principle and the implementation effect are similar, which are not described herein again.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The drawings of the embodiments of the invention only relate to the structures related to the embodiments of the invention, and other structures can refer to common designs.
In the drawings used to describe embodiments of the invention, the thickness and dimensions of layers or microstructures are exaggerated for clarity. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.