CN111312793B - Electronic equipment - Google Patents

Abstract

The embodiment of the application discloses electronic equipment, includes: a display panel and a processing element; wherein the display panel includes: the first substrate and the second substrate are oppositely arranged; a light emitting element located between the first substrate and the second substrate, the light emitting element including a plurality of light emitting units for emitting light; the photosensitive element is positioned between the first substrate and the second substrate and comprises a plurality of photosensitive units, the photosensitive units are used for receiving reflected light rays, and the reflected light rays are reflected light rays formed by a target object based on the emitted light rays; the processing element is used for controlling the driving signal of the light-emitting unit to display an image, and identifying the target object based on the light received by the photosensitive element. The electronic equipment has the functions of displaying and fingerprint identification, is small in thickness, is suitable for development of lightness and thinness of the electronic equipment, and is low in cost.

Description

Electronic equipment

Technical Field

The present application relates to the field of electronic technology, and in particular, to an electronic device.

Background

Along with the development of electronic technology, the electronic devices are applied more and more widely, and have gradually become an indispensable interactive tool for daily work and life of people, so that the safety requirements of people on the electronic devices are higher and higher. Therefore, how to improve the security of the electronic device becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In a first aspect, an embodiment of the present application provides an electronic device, including: a display panel and a processing element; wherein the display panel includes:

the first substrate and the second substrate are oppositely arranged;

a light emitting element positioned between the first substrate and the second substrate, the light emitting element including a plurality of light emitting units for emitting light;

the photosensitive element is positioned between the first substrate and the second substrate and comprises a plurality of photosensitive units, the photosensitive units are used for receiving reflected light rays, and the reflected light rays are reflected light rays formed by a target object based on the emitted light rays;

the processing element is used for controlling the driving signal of the light-emitting unit to display an image, and identifying the target object based on the light received by the photosensitive element.

Optionally, the plurality of light emitting units are arranged along a first direction and a second direction to form a matrix arrangement; the plurality of photosensitive units are arranged in a matrix along the first direction and the second direction; wherein the first direction and the second direction are different.

Optionally, projections of the light emitting units in the light emitting element on a first plane and projections of the light sensing units in the light sensing element on the first plane are arranged in a staggered manner in the first direction; the first plane is parallel to a display surface of the electronic device.

Optionally, the plurality of light emitting units include a plurality of light emitting unit columns arranged along a first direction, and each light emitting unit column includes a plurality of light emitting units arranged along a second direction;

the plurality of photosensitive units comprise a plurality of photosensitive unit columns arranged along the first direction, and each photosensitive unit column comprises a plurality of photosensitive units arranged along the second direction;

the projection of the light emitting unit column on the first plane and the projection of the light sensing unit column on the first plane are arranged in a staggered mode in the first direction.

Optionally, projections of the light emitting units in the light emitting element on the first plane and projections of the light sensing units in the light sensing element on the first plane are arranged in a staggered manner in the second direction.

Optionally, the photosensitive element and the light emitting element are located in the same layer.

Optionally, if the projection of the light emitting unit column on the first plane and the projection of the light sensing unit column on the first plane are arranged in a staggered manner in the first direction, the plurality of light emitting units comprise light emitting units of a plurality of colors, and the light emitting units of the plurality of colors are arranged in a staggered manner in the second direction;

the electronic device further includes:

and the light resistance element is positioned between the light emitting unit row and the photosensitive unit row.

Optionally, the light emitting unit is electrically connected to the processing element through a first connecting line, and the photosensitive unit is electrically connected to the processing element through a second connecting line; a shielding signal wire is arranged between the first connecting wire and the second connecting wire;

or the like, or, alternatively,

the processing element provides a first signal to the light emitting unit during a first time period and receives a second signal from the light sensing unit during a second time period, wherein the first time period and the second time period are different.

Optionally, the electronic device further includes: the touch control element is positioned between the light emitting element and the second substrate and comprises a plurality of touch control electrodes.

Optionally, the photosensitive element and the touch element are located on the same layer, and the photosensitive unit is located in the gap between the touch electrodes.

The electronic equipment provided by the embodiment of the application integrates the photosensitive element inside the display panel, namely integrates the photosensitive element and the light-emitting element together to form a packaging film instead of being superposed outside the display panel, so that the thickness of the electronic equipment is reduced on the basis of ensuring that the electronic equipment has the functions of displaying and fingerprint identification at the same time, and the development of lightness and thinness of the electronic equipment is adapted.

Moreover, among the electronic equipment that this application embodiment provided, utilize photosensitive element to gather target object's reflection light, then utilize processing element based on photosensitive element received light carries out target object's discernment, thus will light collection and signal processing adopt two independent components to handle respectively, and then under the same fingerprint identification area, reduce fingerprint identification's cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a display panel in an electronic device according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating an arrangement of a plurality of light-emitting units in the light-emitting element in an electronic device according to an embodiment of the present application;

fig. 4 is a schematic layout view of a plurality of photosensitive units in the photosensitive element in an electronic device according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating relative positions of the light sensing element and the light emitting element on a drawing of the electronic device according to an embodiment of the present application;

fig. 6 is a schematic diagram of relative positions of the light sensing element and the light emitting element on a drawing of the electronic device according to another embodiment of the present application;

fig. 7 is a diagram illustrating an electronic device according to still another embodiment of the present application, where the relative positions of the light sensing element and the light emitting element on the diagram of the electronic device are intended;

fig. 8 is a schematic view of a relative position of the light-sensing element and the light-emitting element on a drawing of the electronic device according to still another embodiment of the present application;

fig. 9 is a schematic view of relative positions of the light sensing element and the light emitting element on a drawing of an electronic device according to still another embodiment of the present application;

fig. 10 is a top view of a film layer of a display panel where light emitting elements are located in an electronic device according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a display panel in an electronic device according to another embodiment of the present application;

fig. 12 is a schematic structural diagram of a display panel in an electronic device according to yet another embodiment of the present application;

fig. 13 is a schematic diagram illustrating relative positions of a touch sensing element and a light sensing element on a drawing of an electronic device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a display panel in an electronic device according to another embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.

As described in the background section, how to improve the security of electronic devices is a technical problem that needs to be solved by those skilled in the art.

In order to improve the security of electronic devices, fingerprint identification technology has been gradually adopted in electronic devices. The existing electronic equipment is mainly characterized in that a fingerprint identification module is superposed at a specific position below an OLED display panel in an integrated fingerprint identification mode, and a guide identifier is displayed on a display screen of the electronic equipment to guide a user to touch the position of the fingerprint identification module, so that local single-point fingerprint identification is realized. However, this solution would greatly increase the thickness of the electronic device, which is not favorable for the development of light and thin electronic devices.

Moreover, in the fingerprint identification module overlapped below the OLED display panel, the signal acquisition and the signal processing are integrated in the same semiconductor wafer, and the cost of the semiconductor wafer is obviously increased along with the increase of the size of the semiconductor wafer, so that the fingerprint identification integrated in the existing electronic equipment can only be used for single-point fingerprint identification of a specific position, the fingerprint identification of any position cannot be realized, the use convenience is to be improved, and the user experience is poor.

In addition, the principle that fingerprint identification is carried out by the fingerprint identification module overlapped below the OLED display panel is that the fingerprint identification module is used for collecting light rays emitted by the OLED display panel and reflected by fingerprints of users, and fingerprint identification is carried out based on the light rays. However, the fingerprint identification module is located below the OLED display panel, so that light reflected by a user fingerprint is longer in light transmission path received by the fingerprint identification module, needs to penetrate through the OLED display panel, is low in light transmittance, affects the amount of light collected by the fingerprint identification module, and further affects the fingerprint identification accuracy of the fingerprint identification module.

Moreover, the existing fingerprint identification module is a silicon-based or glass-based CMOS element, and is a hard material regardless of silicon-based or glass-based, which is expensive in cost and large in thickness, so that the cost of the fingerprint identification module and the length of a light transmission path of light reflected by a user fingerprint received by the fingerprint identification module are further increased, and the fingerprint identification precision of the fingerprint identification module is reduced.

In view of this, an embodiment of the present application provides an electronic device, optionally, the electronic device is an OLED display device, but the electronic device is not limited to this, and is determined as the case may be. As shown in fig. 1, an electronic device provided in an embodiment of the present application includes: a display panel and a processing element, as shown in fig. 2, the display panel comprising:

afirst substrate 11 and asecond substrate 12 disposed opposite to each other;

a light emitting element located between thefirst substrate 11 and thesecond substrate 12, the light emitting element including a plurality oflight emitting units 13, thelight emitting units 13 for emitting light;

a photosensitive element located between thefirst substrate 11 and thesecond substrate 12, where the photosensitive element includes a plurality ofphotosensitive units 14, and thephotosensitive units 14 are configured to receive reflected light, where the reflected light is formed by a target object based on the emitted light;

the processing element is configured to control a driving signal of thelight emitting unit 13 to display an image, and identify the target object based on the light received by thelight sensing element 14.

It should be noted that, in the embodiment of the present application, the first substrate and the second substrate are an upper substrate and a lower substrate of a display panel in the electronic device, optionally, the lower substrate is a flexible substrate, such as a polyimide film, and the upper substrate is a cover plate, such as a glass cover plate, which is not limited in this application, and is determined as the case may be.

Specifically, in an embodiment of the present application, as shown in fig. 2, the display panel further includes: apolarization element 15 located between the light emitting element and thesecond substrate 12, and alight shielding element 16 and aprotection element 17 located on a side of thefirst substrate 11 away from thesecond substrate 12, optionally, the thickness of thelight shielding element 16 is 0.011mm, and theprotection element 17 includes a copper foil layer and a foam adhesive layer to protect the display panel from the first substrate side and to enable the display panel to have an anti-static releasing capability, which is not limited in this application and is determined as the case may be.

Therefore, in the embodiment of the present application, the photosensitive element is integrated inside the display panel, that is, the photosensitive element and the light emitting element are integrated together to form a packaging film, rather than being stacked outside the display panel, so that the thickness of the electronic device is reduced on the basis of ensuring that the electronic device has both display and fingerprint identification functions, so as to adapt to the development of thinning and lightening of the electronic device.

In addition, in the electronic equipment that this application embodiment provided, utilize photosensitive element to gather the reflection light of target object, then utilize processing element based on the light that photosensitive element received, carry out target object's discernment, thereby will light collection and signal processing adopt two independent components to handle respectively, and then under the same fingerprint identification area, reduce fingerprint identification's cost.

Optionally, on the basis of any of the foregoing embodiments, in an embodiment of the present application, a distance between the photosensitive element and the display surface of the electronic device is not greater than a distance between the emitting element and the display surface of the electronic device, so as to shorten a light transmission path length that light reflected by the target object is received by the photosensitive element, increase an amount of light collected by the photosensitive element on the premise that intensity of light emitted by the light emitting element is constant, and improve accuracy of the electronic device in fingerprint recognition.

On the basis of the above embodiments, in one embodiment of the present application, as shown in fig. 3, the plurality of light emittingunits 13 are arranged in an array along the first direction X and the second direction Y; as shown in fig. 4, the plurality ofphotosensitive cells 14 are arranged in an array along the first direction X and the second direction Y, where the first direction X is different from the second direction Y, so that any position of the area where the plurality of light-emitting units are located in the electronic device can be displayed, and any position of the area where the plurality of photosensitive cells are located can be used for fingerprint detection. Optionally, in an embodiment of the present application, the first direction X and the second direction Y are perpendicular, but the present application does not limit this, as long as the first direction X and the second direction Y intersect.

Specifically, in an embodiment of the present application, the plurality of photosensitive units are uniformly distributed in the display area of the electronic device, so that any position of the display area of the electronic device can be subjected to fingerprint identification, and full-screen fingerprint identification is realized. When the display content is displayed in the display area of the full screen, if the fingerprint identification module is in the enabling state, the fingerprint can be acquired by utilizing the light generated by the light emitting unit when the display content is displayed in the display area of the full screen, namely, when the fingerprint identification module is in the enabling state, the whole display content or the local display content of the display area of the full screen is not changed, the finger is placed at any position (finger position) of the screen, and the light emitted by the light emitting unit in the area corresponding to the finger is reflected by the finger and perceived by the photosensitive unit in the area where the finger is located, so that the fingerprint of the finger of the user on the screen is acquired. Or, when the display content is displayed in the display area of the full screen, if the fingerprint identification module is in the enabled state, the light generated by the light-emitting unit when the display area of the full screen or the partial display area displays the specific display content (for example, pure green or pure blue or pure white, etc.) may be used for fingerprint collection. For example, when the fingerprint identification module is in an enabled state, based on the position of the finger on the screen (which may be any position on the screen), the area corresponding to the finger is determined so as to control the light-emitting unit of the area corresponding to the finger to display the specific display content, so that the specific light emitted by the light-emitting unit of the area corresponding to the finger is reflected by the finger and is perceived by the light-sensing unit located in the area where the finger is located, thereby collecting the fingerprint of the finger of the user located on the screen. The light sensing unit is more favorable for acquiring the fingerprint of the finger by the way that the light emitting unit in the area corresponding to the finger emits the specific light. Of course, in order to reduce power consumption when the fingerprint identification module is enabled, an electronic device provided in one embodiment of the present application may enable only the photosensitive units in the area corresponding to the finger based on the area corresponding to the position (i.e., any position) of the finger on the screen when the fingerprint identification module is enabled, and not enable the photosensitive units outside the area corresponding to the finger. When the fingerprint identification module is enabled every time, the photosensitive units of the areas corresponding to the enabled fingers are different due to different finger positions.

On the basis of the above embodiments, in an embodiment of the present application, as shown in fig. 5 and fig. 6, the projection of the light-emittingunit 13 in the light-emitting element on the first plane and the projection of the light-sensingunit 14 in the light-sensing element on the first plane are arranged in the first direction X in a staggered manner, where the first plane is parallel to the display surface of the electronic device, so as to prevent the light-sensingunit 14 from being located directly above the light-emittingunit 13 and affecting the light emitted by the light-emittingunit 13 for displaying, and prevent the light emitted by the light-emittingunit 13 from being received by the light-sensingunit 14 before reaching the target object and affecting the fingerprint identification accuracy of the electronic device.

Alternatively, on the basis of the above embodiments, in an embodiment of the present application, as shown in fig. 5, the plurality of light emitting units 13 includes a plurality of light emitting unit columns arranged along the first direction X, and each light emitting unit column includes a plurality of light emitting units 13 arranged along the second direction Y; the plurality of photosensitive cells 14 include a plurality of photosensitive cell columns arranged along the first direction X, each photosensitive cell column including a plurality of photosensitive cells 14 arranged along the second direction Y; in this embodiment, the projection of the light emitting unit column on the first plane and the projection of the photosensitive unit column on the first plane are arranged in a staggered manner in the first direction X, that is, in the electronic device provided in this embodiment, the plurality of light emitting units are divided into a plurality of light emitting unit columns, the plurality of photosensitive units are divided into a plurality of photosensitive unit columns, and in the top view of the electronic device, the light emitting unit columns and the photosensitive unit columns are arranged in a staggered manner, so that the projection of the light emitting unit on the first plane in the light emitting element and the projection of the photosensitive unit on the first plane in the photosensitive element are arranged in a staggered manner in the first direction.

Specifically, on the basis of the above embodiments, in an embodiment of the present application, the light emitting units include light emitting units of multiple colors, and the light emitting units of the multiple colors are arranged in a staggered manner in the second direction, so as to realize display of a color picture and improve uniformity of color display.

Optionally, on the basis of the above embodiment, in an embodiment of the present application, as shown in fig. 7, the plurality of light emitting units include a redlight emitting unit 131, a bluelight emitting unit 132, and a greenlight emitting unit 133, and the redlight emitting unit 131, the bluelight emitting unit 132, and the greenlight emitting unit 133 are arranged in a staggered manner in the second direction Y, so as to implement display of a color picture and improve uniformity of color display.

In another embodiment of the present application, as shown in fig. 8, the plurality of light emitting units include a redlight emitting unit 131, a bluelight emitting unit 132, and a greenlight emitting unit 133, and the redlight emitting unit 131, the bluelight emitting unit 132, and the greenlight emitting unit 133 are arranged in a staggered manner in the first direction X, so as to realize the display of a color image and improve the uniformity of color display.

In yet another embodiment of the present application, as shown in fig. 9, the plurality of light emitting units include a redlight emitting unit 131, a bluelight emitting unit 132, and a greenlight emitting unit 133, and the redlight emitting unit 131, the bluelight emitting unit 132, and the greenlight emitting unit 133 are arranged in a staggered manner in the first direction X and the second direction Y, so as to realize display of a color picture and improve uniformity of color display.

In another embodiment of the present application, as shown in fig. 6, the projection of thelight emitting unit 13 in the light emitting element on the first plane and the projection of the light sensing unit in thelight sensing element 14 on the first plane are further arranged in a staggered manner in the second direction Y, that is, in the embodiment of the present application, in the top view of the electronic device, thelight emitting unit 13 and thelight sensing unit 14 are arranged in a staggered manner in the first direction X and in the second direction Y, so as to realize that the projection of thelight emitting unit 13 in the light emitting element on the first plane and the projection of thelight sensing unit 14 in the light sensing element on the first plane are arranged in a staggered manner in the first direction X, and simultaneously improve the uniformity of fingerprint detection and display of the electronic device.

Specifically, on the basis of the above embodiments, in an embodiment of the present application, the light emitting units include light emitting units of multiple colors, and the light emitting units of the multiple colors are arranged in a staggered manner in the first direction and the second direction, so as to realize display of a color picture and improve uniformity of color display.

Optionally, on the basis of the above embodiment, in an embodiment of the present application, the plurality of light emitting units include a red light emitting unit, a blue light emitting unit, and a green light emitting unit, and the red light emitting unit, the blue light emitting unit, and the green light emitting unit are arranged in a staggered manner in the first direction and/or the second direction, so as to realize display of a color picture and improve uniformity of color display.

On the basis of any one of the above embodiments, in an embodiment of the present application, the photosensitive element and the light emitting element are located in the same layer, so that the electronic device has both display and fingerprint identification functions by integrating the photosensitive element and the light emitting element in the same layer, and the thickness of the electronic device is not increased.

On the basis of the foregoing embodiment, in an embodiment of the present application, as shown in fig. 10, if the projection of the light emittingunit array 130 on the first plane and the projection of the lightsensing unit array 140 on the first plane are arranged in a staggered manner in the first direction X, the electronic device further includes a light blocking element located between the light emittingunit array 130 and the lightsensing unit array 140, so as to prevent light emitted by the light emitting unit from affecting the light received by the light sensing unit, and thus affecting the accuracy of fingerprint identification of the electronic device.

It should be noted that, when the plurality of light-emitting units include a red light-emitting unit, a blue light-emitting unit, and a green light-emitting unit, usually, one pixel of the display panel includes the red light-emitting unit, the blue light-emitting unit, and the green light-emitting unit, so that each pixel can display various colors. Therefore, in an optional embodiment of the present application, in order to avoid that the light blocking elements block the light emitted by the light emitting units with different colors in the same pixel point from being mixed with each other, the red light emitting units, the blue light emitting units and the green light emitting units are only arranged in the second direction in a staggered manner.

In another embodiment of the present application, if the plurality of light-emitting units include light-emitting units of multiple colors, one pixel P of the display panel corresponds to the light-emitting units of multiple colors, as shown in fig. 11, the projection of thephotosensitive unit 14 on the first plane is located in a gap between adjacent pixels P, so as to prevent the setting of thephotosensitive unit 14 from affecting the display effect of each pixel P in the display unit. In the embodiment of the present application, the light emitted by the light-emitting units with multiple colors in the same pixel point P is emitted to the target object (finger), reflected by the target object, emitted to the samephotosensitive unit 14, and received by the samephotosensitive unit 14, so as to be used for fingerprint identification of the target object.

On the basis of any one of the above embodiments, in an embodiment of the present application, the light emitting unit is electrically connected to the processing element through a first connecting line, and the light sensing unit is electrically connected to the processing element through a second connecting line, so that both the light emitting unit and the light sensing unit are electrically connected to the processing element.

It should be noted that, on the basis of the above embodiment, in an embodiment of the present application, if the light emitting element and the light sensing element are located in the same layer, a shielding signal line is provided between the first connecting line and the second connecting line, so as to prevent signals in the first connecting line and the second connecting line from interfering with each other to affect the display effect and the fingerprint identification accuracy of the electronic device when the processing element simultaneously provides a signal to the light emitting unit and receives a signal from the light sensing unit by disposing the shielding signal line between the adjacent first connecting line and the adjacent second connecting line.

In another embodiment of the present application, if the light emitting element and the photosensitive element are located in the same layer, the processing element provides the first signal to the light emitting unit in a first time period, and receives the second signal of the photosensitive unit in a second time period, wherein the first time period is different from the second time period, so that the processing element adopts a time-sharing manner to provide the first signal to the light emitting unit and receive the second signal of the photosensitive unit, so as to avoid using the same processing element to provide the signal to the light emitting unit and receive the signal of the photosensitive unit, and the first connecting line and the signal in the second connecting line interfere with each other to influence the display effect and the fingerprint identification accuracy of the electronic device. In other embodiments of the present application, the electronic device may also adopt other manners to avoid mutual interference of signals in the first connection line and the second connection line, as the case may be.

On the basis of any of the above embodiments, in an embodiment of the present application, as shown in fig. 12, the electronic device further includes: a touch element comprising a plurality oftouch electrodes 19 to integrate touch detection functionality in the electronic device. Optionally, the touch element is located between the light emitting element and the second substrate to shorten a distance between the touch element and the display surface of the electronic device, so that when the display surface of the electronic device is touched, a signal variation detected by the touch element is increased, and the touch detection precision of the electronic device is increased.

Specifically, on the basis of the above embodiment, in an embodiment of the present application, if the touch element is located between the light emitting element and the second substrate, in order to avoid that the touch element excessively blocks light emitted by the light emitting element and affects the display effect and the fingerprint identification accuracy of the electronic device, a light transmittance of a film layer where the touch element is located in a display area of the electronic device is greater than 90%, but the present application does not limit this, which is determined as the case may be.

Optionally, on the basis of the above example, in an embodiment of the present application, the touch electrode is a transparent electrode made of a material with a light transmittance greater than 90% such as ITO, so that the light transmittance of the film layer where the touch element is located in the display area of the electronic device is greater than 90%; in another embodiment of the present application, the touch electrodes are opaque electrodes such as metal electrodes, and a ratio of a projection area of a plurality of touch electrodes in the touch element on the first plane to an area of a display area of the electronic device is less than 10%, so that a light transmittance of a film layer where the touch element is located in the display area of the electronic device is greater than 90%, which is not limited in the present application as the case may be.

It should be noted that, on the basis of the foregoing embodiment, in an embodiment of the present application, if the electronic device does not include a touch sensing element, the processing element is specifically configured to, when the processing element is configured to identify the target object based on the light received by the light sensing element: generating a first image based on light received by the photosensitive element, acquiring a display image of the electronic equipment at the current moment, comparing the first image with the display image to obtain a fingerprint image of a target object, and performing fingerprint identification based on the fingerprint image of the target object and a pre-stored fingerprint image.

In another embodiment of the application, if the electronic device includes a touch sensing element, the processing element is specifically configured to, when configured to identify the target object based on the light received by the light sensing element: the method comprises the steps of firstly determining the area of a target object based on a touch signal detected by a touch element, sending a preset driving signal to a light-emitting unit located in the area of the target object by using a processing element, then receiving light collected by a photosensitive unit located in the area of the target object, comparing the light intensity emitted by each light-emitting unit located in the area of the target object with the light intensity received by each photosensitive unit located in the area of the target object, obtaining a fingerprint image of the target object, and finally carrying out fingerprint identification based on the fingerprint image of the target object and a pre-stored fingerprint image.

It should be noted that, in the above embodiment, if the electronic device does not include a touch control element, and the processing element obtains the fingerprint image of the target object based on the image corresponding to the first image and the preset driving signal, it is necessary to always send a driving signal to the light emitting unit to light the screen of the electronic device, so that power consumption is relatively high, or when a user has a fingerprint identification requirement, the user actively triggers to light the screen of the electronic device to reduce power consumption, but the operation is relatively complicated.

And the electronic equipment comprises a touch element, the processing element can detect the touch signal on the surface of the electronic equipment by using the touch element when acquiring the fingerprint image of the target object based on the first image and the image corresponding to the preset driving signal, and sends the driving signal to the sending unit to light the screen of the electronic equipment when determining that the target object is touched on the surface of the electronic equipment.

In addition, because the screen of the electronic device is shielded by the target object in the area touched by the target object, if the electronic device includes a touch element, the processing element may determine the area where the target object is located based on the first image and the image corresponding to the preset driving signal, so as to increase the driving signal of the light emitting unit located in the area where the target object is located, increase the intensity of the light emitted by the light emitting unit located in the area where the target object is located, further increase the intensity of the light emitted by the light sensing unit located in the area where the target object is located, and improve the accuracy of fingerprint identification.

Moreover, if the electronic device includes a touch element, the processing element may further determine, by using the touch element, a region where the target object is located when obtaining the fingerprint image of the target object based on the image corresponding to the first image and the preset driving signal, so as to provide the same driving signal to each light-emitting unit located in the region where the target object is located, and further reduce the calculation amount and complexity of the processing element when obtaining the fingerprint image based on the light received by the light-sensing unit and the light emitted by the light-emitting unit.

It should be noted that, on the basis of any of the above embodiments, if the electronic device includes a touch element, the photosensitive element may also be located in the same layer as the touch element, so that the thickness of the electronic device is not increased on the basis that the electronic device is integrated with the display, touch and fingerprint identification functions, so as to adapt to the development of light and thin electronic devices.

Moreover, compared with the photosensitive element and the light-emitting element which are located on the same layer, the photosensitive element and the touch control element are located on the same layer, and the photosensitive element is closer to the display surface of the electronic device, so that the length of a light transmission path received by the photosensitive element for light reflected by the target object is further shortened, the light quantity collected by the photosensitive element can be increased on the premise that the intensity of light emitted by the light-emitting element is constant, the probability of crosstalk of light received by adjacent photosensitive units can be reduced, and the accuracy of the electronic device in fingerprint identification is improved.

On the basis of any of the above embodiments, in an embodiment of the present application, if the photosensitive element and the touch sensing element are located in the same layer, in order to avoid the influence of the addition of the photosensitive unit on the touch sensing function of the electronic device, as shown in fig. 13, thephotosensitive unit 14 is located in the gap between thetouch sensing electrodes 19. However, the present application does not limit this, and the specific case may be.

On the basis of the foregoing embodiment, in an embodiment of the present application, as shown in fig. 14, if the plurality of light emitting units include light emitting units of multiple colors, and one pixel point P of the display panel corresponds to the light emitting units of multiple colors, the projection of thephotosensitive unit 14 on the first plane is located in a gap between adjacent pixel points P, so as to prevent the setting of thephotosensitive unit 14 from affecting the display effect of each pixel point P in the display unit. However, this is not limited in this application, and in other embodiments of the application, when the photosensitive element and the touch element are located in the same layer in a top view of the electronic device, a relative positional relationship between the photosensitive element and the light emitting element may be the same as that when the photosensitive element or the light emitting element is located in the same layer, and the relative positional relationship between the photosensitive element and the light emitting element is the same as that when the photosensitive element and the light emitting element are located in the same layer, which is determined specifically according to the situation.

Because on the top view of electronic equipment, photosensitive element with when the touch-control component is located the same layer, photosensitive element with the relative position relation of light emitting component can adopt with photosensitive element with when the light emitting component is located the same layer, photosensitive element with the relative position relation of light emitting component is the same, and this application is no longer repeated repeatedly to this repeated description.

Optionally, on the basis of any of the above embodiments, in an embodiment of the present application, the photosensitive unit is an organic photodetector (i.e., an OPD), but the present application does not limit this, as long as the manufacturing material of the photosensitive unit is a high photosensitive material and a thin element can be manufactured.

Specifically, in an embodiment of the present application, the photosensitive unit is made of a material that can form a photosensitive element with a thickness less than 10 micrometers by using an evaporation or coating process, so as to be integrated in the display panel, for example, the photosensitive element and the light emitting element or the touch element are disposed on the same layer, but the present application is not limited thereto, and the photosensitive unit is determined as the case may be.

It should be noted that, because the organic photodetector is a thin-film fingerprint sensor, the thickness of the organic photodetector can be 0.2mm, in this embodiment of the application, the photosensitive unit adopts the organic photodetector, and the thickness of the electronic device can be further reduced.

In summary, the electronic device provided in the embodiment of the present application integrates the photosensitive element inside the display panel, that is, integrates the photosensitive element and the light emitting element together to form a packaging film, rather than overlapping the photosensitive element and the light emitting element outside the display panel, so as to ensure that the electronic device has the display and fingerprint recognition functions at the same time, and reduce the thickness of the electronic device to adapt to the development of lightness and thinness of the electronic device.

In addition, in the electronic equipment that this application embodiment provided, utilize photosensitive element to gather the reflection light of target object, then utilize processing element based on the light that photosensitive element received, carry out target object's discernment, thereby will light collection and signal processing adopt two independent components to handle respectively, and then under the same fingerprint identification area, reduce fingerprint identification's cost.

In the description, each part is described in a progressive manner, each part is emphasized to be different from other parts, and the same and similar parts among the parts are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. An electronic device, comprising: a display panel and a processing element; wherein the display panel includes:

the first substrate and the second substrate are oppositely arranged;

a light emitting element located between the first substrate and the second substrate, the light emitting element including a plurality of light emitting units for emitting light;

the photosensitive element is positioned between the first substrate and the second substrate and comprises a plurality of photosensitive units, the photosensitive units are used for receiving reflected light rays, and the reflected light rays are formed by a target object based on the emitted light rays;

the processing element is used for controlling a driving signal of the light-emitting unit to display an image and identifying the target object based on the light received by the photosensitive element;

wherein the photosensitive element and the light-emitting element are positioned on the same layer; the plurality of light emitting cells include a plurality of light emitting cell columns arranged in a first direction, each light emitting cell column including a plurality of light emitting cells arranged in a second direction; the plurality of photosensitive units comprise a plurality of photosensitive unit columns arranged along the first direction, and each photosensitive unit column comprises a plurality of photosensitive units arranged along the second direction; the projection of the light emitting unit column on the first plane and the projection of the light sensing unit column on the first plane are arranged in a staggered mode in the first direction, the plurality of light emitting units comprise light emitting units of a plurality of colors, and the light emitting units of the plurality of colors are arranged in a staggered mode in the second direction;

and the light resistance element is positioned between the light emitting unit row and the photosensitive unit row so as to prevent the light emitted by the light emitting unit from influencing the light received by the photosensitive unit.

2. The electronic device according to claim 1, wherein the plurality of light emitting units are arranged in a matrix arrangement along a first direction and a second direction; the plurality of photosensitive units are arranged in a matrix along the first direction and the second direction; wherein the first direction and the second direction are different.

3. The electronic device according to claim 2, wherein projections of the light emitting units in the light emitting elements on a first plane are arranged in a staggered manner in the first direction with projections of the light sensing units in the light sensing elements on the first plane; the first plane is parallel to a display surface of the electronic device.

4. The electronic device according to claim 3, wherein projections of the light emitting units in the light emitting elements on the first plane are arranged to be staggered in the second direction with projections of the light sensing units in the light sensing elements on the first plane.

5. The electronic device according to claim 1, wherein the light emitting unit is electrically connected to the processing element through a first connection line, and the light sensing unit is electrically connected to the processing element through a second connection line; a shielding signal wire is arranged between the first connecting wire and the second connecting wire;

or the like, or, alternatively,

the processing element provides a first signal to the light emitting unit during a first time period and receives a second signal from the light sensing unit during a second time period, wherein the first time period and the second time period are different.

6. The electronic device of any of claims 2-4, further comprising: the touch control element is positioned between the light emitting element and the second substrate and comprises a plurality of touch control electrodes.

7. The electronic device of claim 6, wherein the photosensitive element is located on the same layer as the touch-sensing element, and the photosensitive unit is located in a gap between the touch-sensing electrodes.

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