CN110619305A - Display screen assembly and electronic equipment - Google Patents

Abstract

The application provides a display screen assembly, includes: the display screen comprises a liquid crystal panel and a backlight module which is overlapped on the inner surface of the liquid crystal panel, the liquid crystal panel comprises a display area and a non-display area, and a fingerprint detection area is arranged on the display area of the liquid crystal panel; the fingerprint module is arranged on the inner surface of the non-display area of the display screen, the orthographic projection of the inner surface and the orthographic projection of the inner surface of the backlight module are staggered, and the fingerprint module is used for receiving detection signals returned by the fingerprint detection area through finger reflection and generating fingerprint information according to the received detection signals. An electronic device is also provided.

Description

Display components and electronic equipment

technical field

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

Background technique

At present, the fingerprint recognition under the screen is mainly used in organic light-emitting diode (organic light-emitting diode, OLED) screens. The reflected light formed by the finger reflection detects the fingerprint. However, because the light-emitting principle and specific structure of a liquid crystal display (LCD) screen are different from those of an OLED screen, the backlight module of the LCD screen has opacity. Therefore, the fingerprint recognition solution under the OLED screen is not suitable for the LCD screen. Therefore, how to realize the optical fingerprint recognition under the LCD screen is a technical problem that needs to be solved urgently in the art.

Application content

The present application provides a display screen assembly and an electronic device capable of realizing optical fingerprint recognition under an LCD screen.

In one aspect, the present application provides a display screen assembly, comprising: a display screen, the display screen includes a liquid crystal panel and a backlight module stacked on an inner surface of the liquid crystal panel, the liquid crystal panel includes a display area and a non-display area a display area, a fingerprint detection area is set on the display area of the liquid crystal panel; and a fingerprint module, the fingerprint module is arranged on the inner surface of the non-display area of the display screen, and the fingerprint module is located in the display area. The orthographic projection of the inner surface is staggered from the orthographic projection of the backlight module on the inner surface, and the fingerprint module is used to receive the detection signal returned by the finger reflection from the fingerprint detection area, and according to the received The detection signal generates fingerprint information.

In another aspect, the present application provides an electronic device including the display screen assembly.

In the technical solution of the present application, a fingerprint module is arranged under the non-display area of the display screen. When the user's fingerprint surface is set in the identification area of the display area, the transmitter of the fingerprint module emits a detection signal toward the identification area of the display area. The detection signal is reflected by the finger from the fingerprint detection area and then received by the receiver of the fingerprint module, so that the user can perform fingerprint identification in the display area of the LCD display.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

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

FIG. 2 is a schematic cross-sectional view of the display screen assembly of the electronic device provided in FIG. 1 along the line A-A.

FIG. 3 is a schematic partial enlarged cross-sectional view of FIG. 2 .

FIG. 4 is a partial cross-sectional schematic diagram of a display screen assembly provided by a second embodiment of the present application.

FIG. 5 is a partial cross-sectional schematic diagram of a display screen assembly provided by a third embodiment of the present application.

FIG. 6 is a partial cross-sectional schematic diagram of a display screen assembly provided by a fourth embodiment of the present application.

FIG. 7 is a partial cross-sectional schematic diagram of a display screen assembly provided by a fifth embodiment of the present application.

FIG. 8 is a partial cross-sectional schematic diagram of a display screen assembly provided by a sixth embodiment of the present application.

FIG. 9 is a partial cross-sectional schematic diagram of a display screen assembly provided by a seventh embodiment of the present application.

FIG. 10 is a partial cross-sectional schematic diagram of the display screen assembly provided by the eighth embodiment of the present application.

FIG. 11 is a partial cross-sectional schematic diagram of the display screen assembly provided by the ninth embodiment of the present application.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are they separate or alternative embodiments that are mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The embodiments of the present application can be applied to fingerprint systems, including but not limited to optical, ultrasonic or other fingerprint identification systems and medical diagnostic products based on optical, ultrasonic or other fingerprint imaging. The embodiments of the present application only take the optical fingerprint system as an example for description. However, the embodiments of the present application should not constitute any limitation, and the embodiments of the present application are also applicable to other systems using optics, ultrasound or other imaging technologies.

In addition to fingerprint identification, the technical solutions of the embodiments of the present application can also perform other biometric identifications, such as living body identification, etc., which are not limited in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various electronic devices, and more specifically, can be applied to electronic devices having a display screen. For example, portable or mobile computing devices such as smartphones, notebook computers, tablet computers, and game devices, as well as other electronic devices such as electronic databases, automobiles, and bank automated teller machines (ATMs), are not limited in the embodiments of the present application. .

More specifically, in the above-mentioned electronic device, the fingerprint module can be specifically an optical fingerprint module, which can be arranged in a partial area or an entire area below the display screen, thereby forming an under-display optical fingerprint system.

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It should be noted that, for convenience of description, in the embodiments of the present application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the accompanying drawings, as well as the overall thickness, length and width, etc. of the fingerprint module under the screen are only exemplary descriptions, and should not be dealt with in the present application. constitute any limitation.

Please refer to FIG. 1 , which is a schematic structural diagram of an electronic device according to a first embodiment of the present application. The electronic device 100 includes a casing and a display screen assembly 200 accommodated in the casing.

The display screen assembly 200 may be a liquid crystal display (Liquid Crystal Display, LCD) or other passive light-emitting display screens.

As shown in FIG. 2 and FIG. 3 , the display screen assembly 200 provided by the first embodiment of the present application includes a display screen 1 and a fingerprint module 2 . The display screen 1 includes a liquid crystal panel 11 and a backlight module 12 stacked on the inner surface 111 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 is offset from the orthographic projection of the backlight module 12 on the inner surface 111 . The fingerprint module 2 is configured to receive a detection signal returned from the fingerprint detection area 114 through finger reflection, and generate fingerprint information according to the received detection signal.

The liquid crystal panel 11 includes but is not limited to a color filter substrate, a thin film transistor array substrate, a liquid crystal layer, and the like. It can be understood that the liquid crystal panel 11 has a certain transmittance for the detection signal, so that the detection signal can penetrate the liquid crystal panel 11 for signal transmission. It can be understood that the inner surface 111 of the liquid crystal panel 11 is generally a plane.

In one embodiment, the fingerprint module 2 is a package.

In one embodiment, the non-display area 113 may be disposed on one side of the display area 112 , for example, the non-display area 113 may be disposed below the display area 112 . In another embodiment, the non-display area 113 can also be semi-surrounded by the display area 112 , the display area 112 is formed with a notch, and the non-display area 113 can be semi-surrounded by the notch in the display area 112 wherein, such an arrangement is beneficial to increase the proportion of the display area 112 in the display screen 1 . In this embodiment, as shown in FIG. 1 , the non-display area 113 is arranged around the display area 112 . In other embodiments, the positional relationship between the display area 112 and the non-display area 113 may not be limited to the above embodiments.

The fingerprint detection area 114 may be a certain fixed position of the display area 112 on the liquid crystal panel 11, or may extend to the entire display area 112 of the liquid crystal panel, which is not specifically limited in this embodiment of the present application. Correspondingly, the fingerprint module 2 below the liquid crystal panel 11 may be one fingerprint module or multiple fingerprint modules, and the multiple fingerprint modules may be used to receive finger reflections from different fingerprint detection areas on the liquid crystal panel 11 . return probe signal.

The orthographic projection of the light emitting surface of the backlight module 12 on the inner surface 111 covers the display area 112 ; wherein, the light emitting surface of the backlight module 12 can be formed in the display area 112 and the non-display area 113 , or only in the display area 112 . The size of the orthographic projection of the light emitting surface of the backlight module 12 on the inner surface 111 may be the same as the size of the orthographic projection of the backlight module 12 as a whole on the inner surface 111 , or may be smaller than the size of the backlight module 12 The size of the orthographic projection of the whole on the inner surface 111; for example, the backlight module 12 is an edge-type light source backlight module, and a light source is provided on the side, so that the backlight module 12 is integrally formed on the inner surface 111 The size of the orthographic projection of the backlight module 12 will be larger than the size of the orthographic projection of the light-emitting surface of the backlight module 12 on the inner surface 111. For example, the backlight module 12 is a direct-type light source backlight module, and a light source is provided on the back. Therefore, the size of the orthographic projection of the entire backlight module 12 on the inner surface 111 is equivalent to the size of the orthographic projection of the light-emitting surface of the backlight module 12 on the inner surface 111 . Of course, this may not be the case. limit.

In one embodiment, as shown in FIG. 2 and FIG. 3 , the orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and separated. A gap is formed between them, and the gap can provide a light path for the detection signal, or in other words, the gap can prevent the detection signal from being blocked by the backlight module 12 .

In another embodiment, as shown in FIG. 4 , the orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and seamlessly connected , so that the proportion of the area of the backlight module 12 in the electronic device 100 is larger, which is beneficial to increase the display area of the electronic device 100; in this case, the detection signal does not need to be transmitted from the fingerprint module. 2 The case of passing toward the side of the backlight module 12 .

Since the fingerprint module 2 is located below the liquid crystal panel 11 instead of the backlight module 12 , the light detection signal reflected by the finger received by the fingerprint module 2 does not need to pass through the backlight module 12 and thus will not be blocked by the backlight module 12 , therefore, the fingerprint module 2 can receive the light detection signal reflected by the finger and carry out fingerprint identification, that is, the optical fingerprint identification under the LCD screen can be realized; in addition, the fingerprint module 2 is arranged in the non-display area 113 of the liquid crystal panel 11 below, it will not affect the display effect of the screen.

The fingerprint module 2 and the inner surface 111 may be closely attached, or a gap may be formed.

In one embodiment, as shown in FIG. 2 and FIG. 3 , the fingerprint module 2 includes a receiver 21, and the receiver 21 includes a sensing side surface 211; wherein, the backlight module 12 can be used as the fingerprint The light source of the module 2, the receiver 21 is used to receive the light signal from the fingerprint detection area 114 and reflected by the finger from the backlight module 12, and generate fingerprint information according to the received light signal. The receiver 21 may be a CMOS optical device or a CCD optical device or the like.

In one embodiment, as shown in FIG. 2 and FIG. 3 , the fingerprint module 2 further includes a transmitter 22 , and the transmitter 22 includes an emission surface 221 . The transmitter 22 is used to transmit a detection signal to the fingerprint detection area 114; the receiver 21 is also used to receive the detection signal sent by the transmitter 22 from the fingerprint detection area 114 through finger reflection and return, and according to the received The detection signal generates fingerprint information. The transmitter 22 in this embodiment of the present application can transmit detection signals independently, so that fingerprint recognition can be implemented even when the electronic device is in a screen-off state.

It should be noted that the detection signal sent by the transmitter 22 may be a visible light signal, an invisible light signal, an ultrasonic signal, or the like. The invisible light signal can be, for example, an infrared or ultraviolet lamp detection signal. The infrared detection signal has strong penetrating power, is invisible, and will not affect the displayed image, so it can be used as the preferred detection signal.

The number of the emitters 22 may be one or more; for example, there may be multiple infrared LED lights.

In one embodiment, as shown in FIG. 2 and FIG. 3 , the fingerprint module 2 further includes a controller 23 , and the controller 23 is used to control the transmitter 22 to be turned on and off. For example, when the liquid crystal panel 11 is in a bright screen state, the light source required for fingerprint recognition can be provided by the backlight module 12, and the controller 23 can control the transmitter 22 to turn off; for another example, when the liquid crystal panel 11 is in an off screen state, The controller 23 may control the transmitter 22 to transmit the detection signal. Of course, when the liquid crystal panel 11 is in the bright screen state, the controller 23 can also control the transmitter 22 to transmit a detection signal, so that the receiver 21 only receives the detection signal reflected by the transmitter after transmission, or makes the The receiver 21 simultaneously receives the detection signal reflected by the transmitter and the light signal reflected by the backlight module 12 after being transmitted.

Both the sensing side surface 211 of the receiver 21 and the emitting surface 221 of the transmitter 22 can be parallel to, perpendicular to the inner surface 11 , or have an oblique angle with the inner surface 11 . In one embodiment, for example, the sensing side surface 211 of the receiver 21 may form an inclination angle with the inner surface 11, and the inclination angle may be greater than 0 degrees to less than 90 degrees, or may be greater than 0 degrees to less than 60 degrees, and may also be greater than 30 degrees to less than 45 degrees; for another example, the emitting surface 221 of the emitter 22 may form an inclined angle with the inner surface 11, and the inclined angle may be It can be more than 0 degrees to less than 90 degrees, it can also be more than 0 degrees to less than 60 degrees, and it can also be more than 30 degrees to less than 45 degrees. The position of the emission surface 221 and/or the position of the fingerprint detection area on the liquid crystal panel 11 is determined.

Preferably, the sensing side surface 211 of the receiver 21 and the emitting surface 221 of the transmitter 22 are respectively oriented in different directions, so that the detection signal received by the sensing side surface 211 of the receiver 21 will not be detected by the transmitter 22 Signal interference, thereby improving the fingerprint recognition accuracy of the fingerprint module 2 .

Wherein, when the detection signal is an optical signal, by setting the transmitter 22 to emit the optical signal obliquely, the illumination area of the optical signal emitted by the transmitter 22 is relatively large, so that relatively few transmitters 22 correspond to relatively large The fingerprint detection area 114 improves the efficiency of fingerprint identification.

In one embodiment, the sensing side surface 211 of the receiver 21 and/or the emitting surface 221 of the transmitter 22 can be directly exposed on the fingerprint module 2; /or when the emitting surface 221 of the transmitter 22 is not coplanar with the outer surface of the fingerprint module 2 where it is located, an opening can be formed on the fingerprint module 2 to expose the sensing side surface 211 of the receiver 21 and /or the emitting surface 221 of the emitter 22 .

In another embodiment, a medium layer may be formed on the sensing side surface 211 of the receiver 21, and the medium layer forms an optical path, so that the detection signal reflected by the finger above the fingerprint detection area 114 can pass through the medium Similarly, a dielectric layer can also be formed on the transmitting surface 221 of the transmitter 22, so that the detection signal emitted by the transmitter can reach the fingerprint detection area 114 through the dielectric layer. ; The dielectric layer can play a guiding role and a protective role. When the detection signal is an optical signal, the dielectric layer may be a light-guiding material layer.

In one embodiment, as shown in FIGS. 2 and 3 , the display screen 1 may further include a cover plate 13 laminated on the outer surface 115 of the liquid crystal panel 11 away from the inner surface 111 . The cover plate 13 includes a light-transmitting area 131 , and the light-transmitting area 131 corresponds to the display area 112 of the liquid crystal panel 11 . The material of the cover plate 13 includes but is not limited to transparent materials such as glass, plastic or sapphire. The cover plate 13 may further include a non-light-transmitting area, and the non-light-transmitting area may correspond to the non-display area 113 of the liquid crystal panel 11 . The non-light-transmitting area may be formed by coating or printing a light-shielding ink layer of black or white color on the inner surface of the cover plate 13 (the surface facing the liquid crystal panel 11 ). The fingerprint recognition can actually be performed on the cover plate 13 above the fingerprint identification area 114 of the liquid crystal panel 11 of the display screen 1 or the surface of the protective layer covering the cover plate 13 .

Optionally, the fingerprint module 2 may also include a light-condensing element and a light-converting element, etc., which are arranged on the optical path of the receiver 21 to receive the optical signal, and may also include a Collimating elements, etc., on the optical path of the emitted optical signal.

The thickness of the fingerprint module 2 can be greater than, equal to or less than the thickness of the backlight module 12; preferably, the thickness of the fingerprint module 2 is equivalent to the thickness of the backlight module 12, so that the electronic The space utilization of the device 100 is optimized.

The specific structure of the display screen assembly 200 is described below with specific embodiments.

In a second embodiment, as shown in FIG. 4 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and closely connected.

The fingerprint module 2 includes a receiver 21 . The sensing side surface 211 of the receiver 21 is disposed toward the inner surface 111 , and the sensing side surface 211 is parallel to the inner surface 111 . When fingerprint recognition is performed, the light signal emitted by the backlight module 12 reaches the finger through the fingerprint detection area 114 of the liquid crystal panel 11 and the cover plate 13 , and the light signal is reflected by the finger and then passes through the cover. The panel 13 and the liquid crystal panel 11 reach the sensing side surface 211 of the receiver 21 and are received by the sensing side surface 211 of the receiver 21 .

In this embodiment, the light signal emitted by the backlight module 12 is used as the light source for fingerprint identification, and no additional transmitter element is required, thereby reducing the use of elements and facilitating the thinning of the electronic device.

In a third embodiment, as shown in FIG. 5 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and a gap is formed therebetween.

The fingerprint module 2 includes a receiver 21 and a transmitter 22 . The sensing side surface 211 of the receiver 21 is disposed toward the inner surface 111 , and the sensing side surface 211 is parallel to the inner surface 111 . The emission surface 221 of the emitter 22 is disposed toward the backlight module 12 , and the emission surface 221 is perpendicular to the inner surface 111 . In this embodiment, the emission surface 221 is also connected to the fingerprint module 2 . The sides facing the backlight module 12 are flush. When fingerprint recognition is performed, the emitting surface 221 is inclined to emit light signals toward the inner surface 111 , and the light signals pass through the gap between the fingerprint module 2 and the backlight module 12 , and the liquid crystal panel 11 . The fingerprint detection area 114 and the cover plate 13 reach the finger, and the optical signal is reflected by the finger, passes through the cover plate 13 and the liquid crystal panel 11, reaches the sensing side 211 of the receiver 21, and is detected by the finger. The sensing side 211 of the receiver 21 receives.

In this embodiment, the transmitter 22 is provided, so that when the screen of the electronic device is black, a light source can be provided, thereby facilitating fingerprint identification; and, generally speaking, the length of the sensing side surface 211 is equal to the length of the fingerprint portion of the finger, and the sensing The side surface 211 is arranged in parallel with respect to the inner surface 111, so that the length occupied by the side surface 211 in the direction perpendicular to the inner surface 111 can be shortened, and the thickness of the fingerprint module 2 can be made smaller, which is beneficial to the thinning of the electronic device. shape.

It can be understood that the emitting surface 221 in this embodiment can also be inclined to the inner surface 111; wherein, the inclined setting of the transmitter 22 can make the emitting surface of the transmitter 22 perpendicular to the transmission path of the detection signal or It is closer to the vertical, so that the signal emitted by the transmitter 22 is more concentrated to the fingerprint detection area 114, thereby improving the signal transmission efficiency, thereby improving the fingerprint identification efficiency.

It can be understood that the positions of the receiver 21 and the transmitter 22 in this embodiment can be interchanged as long as the thickness of the fingerprint module 2 is not too small, which will not be repeated here.

In a fourth embodiment, as shown in FIG. 6 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and a gap is formed therebetween.

The fingerprint module 2 includes a receiver 21 and a transmitter 22 . The sensing side surface 211 of the receiver 21 is disposed toward the inner surface 111 , the sensing side surface 211 is inclined relative to the inner surface 111 and is spaced from the inner surface 111 , and the sensing side surface 211 is connected to the inner surface 111 . A dielectric layer 212 is formed between the inner surfaces 111 , and the dielectric layer 212 forms a signal channel. The emitting surface 221 of the emitter 22 is disposed toward the backlight module 12, and the emitting surface 221 is perpendicular to the inner surface 111. In this embodiment, the emitting surface 221 is also aligned with the fingerprint module. 2. The sides facing the backlight module 12 are flush. When fingerprint recognition is performed, the emitting surface 221 is inclined to emit light signals toward the inner surface 111 , and the light signals pass through the gap between the fingerprint module 2 and the backlight module 12 , and the liquid crystal panel 11 . The fingerprint detection area 114 and the cover plate 13 reach the finger, and the optical signal is reflected by the finger to reach the receiver 21 through the cover plate 13 , the liquid crystal panel 11 and the dielectric layer 212 . The sensing side 211 is received by the sensing side 211 of the receiver 21 .

In this embodiment, a dielectric layer 212 is formed between the sensing side surface 211 and the inner surface 111, so that the optical path for receiving the optical signal is long, and a long enough path is provided for the clear imaging of the fingerprint image on the receiver 21; in addition, The sensing side surface 211 is inclined relative to the inner surface 111, so that more light signals reflected by the finger can be received, which helps to improve the recognition efficiency of the fingerprint module 2; and the sensing side surface 211 is relative to the inner surface. 111 is inclined, so that the length occupied by the sensing side surface 211 in the direction perpendicular to the inner surface 111 can be shortened, so that the thickness of the fingerprint module 2 can be made smaller, which is beneficial to the thinning of the electronic device.

It can be understood that the emitting surface 221 in this embodiment can also be disposed obliquely with the inner surface 111 , and a dielectric layer can also be formed on the emitting surface 221 , which will not be repeated here.

It can be understood that when the thickness of the fingerprint module 2 is not required to be small, the positions of the receiver 21 and the transmitter 22 in this embodiment can also be interchanged, and the specific content will not be repeated here.

In this embodiment, a reflective element may also be formed on the fingerprint module 2, and the reflective element may be disposed on the surface of the dielectric layer 212 to reflect more light signals to the sensing side surface 211; It can be set at other positions that are favorable for the light signal to reach the sensing side surface 211 .

In a fifth embodiment, as shown in FIG. 7 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and a gap is formed therebetween.

The fingerprint module 2 includes a receiver 21 and two transmitters 22 . The sensing side surface 211 of the receiver 21 is disposed toward the inner surface 111 , the sensing side surface 211 is inclined relative to the inner surface 111 and is spaced from the inner surface 111 , and the sensing side surface 211 is connected to the inner surface 111 . A recessed space 213 is formed between the surfaces 111 , and the recessed space 213 itself also forms a signal channel. The emission surfaces 221 of the two emitters 22 are disposed toward the backlight module 12 , and each of the emission surfaces 221 is perpendicular to the inner surface 111 . The sides of the fingerprint module 2 facing the backlight module 12 are flush with each other. When fingerprint recognition is performed, each of the emitting surfaces 221 is inclined to emit light signals toward the inner surface 111 , and the light signals pass through the gap between the fingerprint module 2 and the backlight module 12 and the liquid crystal panel 11 . The fingerprint detection area 114 and the cover plate 13 of the fingerprint detection area 114 and the cover plate 13 reach the finger, and the optical signal reaches the receiver 21 through the cover plate 13 , the liquid crystal panel 11 and the recessed space 213 after being reflected by the finger. The sense side 211 of the receiver 21 is received by the sense side 211 of the receiver 21 .

Compared with the previous embodiment, in this embodiment, a recessed space 213 is formed between the sensing side surface 211 and the inner surface 111 , which can also make the optical path for receiving the optical signal longer, so that the fingerprint image can be clearly imaged on the receiver 21 . Provide a long enough path; in addition, the setting of the two transmitters 22 can make the emitted light signal range wider and the signal strength higher, so that the light signal reaching the fingerprint detection area 114 is also stronger, and thus can also improve the fingerprint identification efficiency.

It can be understood that the emitting surface 221 in this embodiment may also be disposed obliquely with the inner surface 111 , and a concave space may also be formed on the emitting surface 221 , which will not be repeated here.

It can be understood that, when the thickness of the fingerprint module 2 is not required to be small, the positions of the receiver 21 and the transmitter 22 in this embodiment can also be interchanged, and the specific content will not be repeated here.

In this embodiment, the fingerprint module 2 can also be formed with a reflective element, and the reflective element can be arranged on the side wall of the recessed space 213 to reflect more light signals to the sensing side surface 211; of course, , and can also be set at other positions that are favorable for the light signal to reach the sensing side surface 211 .

In a sixth embodiment, as shown in FIG. 8 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and a gap is formed therebetween.

The fingerprint module 2 includes a receiver 21 , a transmitter 22 and a light collecting element 24 . The emitting surface 221 of the emitter 22 is disposed toward the inner surface 111 , and the emitting surface 221 of the emitter 22 is parallel to the inner surface 111 . The sensing side surface 211 of the receiver 21 is disposed toward the backlight module 12 , the sensing side surface 211 and the inner surface 111 are inclined, and the sensing surface 211 and the backlight module 12 face the backlight module 12 . A recessed space 213 is formed between the side surfaces of the group 12 . The condensing element 24 is formed in the recessed space 213 and is located on the receiving light path of the sensing side surface 211 .

When fingerprint recognition is performed, the emitting surface 221 is inclined to emit light signals toward the inner surface 111 , and the light signals reach the finger through the fingerprint detection area 114 of the liquid crystal panel 11 and the cover plate 13 . After the light signal is reflected by the finger, it passes through the cover plate 13 , the liquid crystal panel 11 , the gap between the fingerprint module 2 and the backlight module 12 and the light-gathering element 24 , and is collected by the light-gathering element 24 . The light elements 24 converge and then reach the sensing side surface 211 of the receiver 21 and are received by the sensing side surface 211 of the receiver 21 . The focusing element 24 has a preset distance from the sensing side surface 211 of the receiver 21 , so that the detection signal reflected by the finger can be imaged on the receiver 21 through the focusing element 22 .

In this embodiment, the condensing element 24 is provided, which can improve the clarity of the image on the receiver 21, and can receive the reflected light of the detection signal as much as possible, so that the reflected light of the detection signal can be absorbed by the detection signal as much as possible. The receiver 21 receives, thereby improving the identification efficiency of the fingerprint module 2; in addition, the path of the receiving optical path in this embodiment is also longer, which is conducive to clear imaging.

In this embodiment, the fingerprint module 2 can also be formed with a reflective element, and the reflective element can be arranged on the side wall of the recessed space 213 to reflect more light signals to the sensing side surface 211; of course, , and can also be set at other positions that are favorable for the light signal to reach the sensing side surface 211 .

In a seventh embodiment, as shown in FIG. 9 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and a gap is formed therebetween.

The fingerprint module 2 includes a receiver 21 and two transmitters 22 . The emitting surface 221 of each of the emitters 22 is disposed toward the inner surface 111 , and the emitting surface 221 of each of the emitters 22 is parallel to the inner surface 111 . The sensing side surface 211 of the receiver 21 is disposed toward the backlight module 12 , the sensing side surface 211 is perpendicular to the inner surface 111 , and the sensing surface 211 and the backlight module 12 face the backlight module 12 . A dielectric layer 212 is formed between the sides of the group 12 .

When fingerprint recognition is performed, the two emitting surfaces 221 tilt toward the inner surface 111 to emit light signals, and the light signals reach the finger through the fingerprint detection area 114 of the liquid crystal panel 11 and the cover plate 13 . After the light signal is reflected by the finger, it passes through the cover plate 13 , the liquid crystal panel 11 , the gap between the fingerprint module 2 and the backlight module 12 and the dielectric layer 212 , and then reaches the The sensing side 211 of the receiver 21 is received by the sensing side 211 of the receiver 21 .

In this embodiment, the path of the receiving optical path is also long, which is conducive to clear imaging; in addition, the arrangement of the two transmitters 22 can make the range of the transmitted optical signal wider and the signal intensity higher, so that the light reaching the fingerprint detection area 114 can be The optical signal is also stronger, which in turn can improve the efficiency of fingerprint recognition.

In this embodiment, a reflective element may also be formed on the fingerprint module 2, and the reflective element may be disposed on the surface of the dielectric layer 212 to reflect more light signals to the sensing side surface 211; It can be set at other positions that are favorable for the light signal to reach the sensing side surface 211 .

In an eighth embodiment, as shown in FIG. 10 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and a gap is formed therebetween.

The fingerprint module 2 includes a receiver 21 , a transmitter 22 and a light converting element 25 . The emitting surface 221 of the emitter 22 is disposed toward the inner surface 111 , and the emitting surface 221 of the emitter 22 is parallel to the inner surface 111 . The sensing side surface 211 of the receiver 21 is disposed toward the backlight module 12 , the sensing side surface 211 is perpendicular to the inner surface 111 , and the sensing surface 211 and the backlight module 12 face the backlight module 12 . A recessed space 213 is formed between the side surfaces of the group 12 . The light converting element 25 is formed in the recessed space 213 and located on the light receiving path of the sensing side surface 211 . The light incident surface of the light diverting element 25 is an inclined surface inclined relative to the inner surface 111 , and the light exit surface is a vertical surface perpendicular to the inner surface 111 . The light converting element 25 is used to convert the obliquely incident detection signal into a detection signal that is vertically incident on the sensing side of the receiver 21 , and can also improve the receiving efficiency of the sensing side receiving the detection signal, thereby improving the performance of the fingerprint module 2 . Fingerprint recognition efficiency.

When fingerprint recognition is performed, the emitting surface 221 is inclined to emit light signals toward the inner surface 111 , and the light signals reach the finger through the fingerprint detection area 114 of the liquid crystal panel 11 and the cover plate 13 . After the light signal is reflected by the finger, it passes through the cover plate 13 , the liquid crystal panel 11 , the gap between the fingerprint module 2 and the backlight module 12 , and the light incident surface of the light converting element 25 . The oblique light is converted into vertical light by the light converting element 25 and exits from the light exit surface of the light converting element 25 , and then reaches the sensing side 211 of the receiver 21 and is received by the sensing side 211 of the receiver 21 . The path of the receiving light path in this embodiment is also relatively long, which is conducive to clear imaging.

In this embodiment, the fingerprint module 2 can also be formed with a reflective element, and the reflective element can be arranged on the side wall of the recessed space 213 to reflect more light signals to the sensing side surface 211; of course, , and can also be set at other positions that are favorable for the light signal to reach the sensing side surface 211 .

In a ninth embodiment, as shown in FIG. 11 , the display screen assembly 200 includes a display screen 1 and a fingerprint module 2 ; the display screen 1 includes a liquid crystal panel 11 , which is stacked inside the liquid crystal panel 11 . The backlight module 12 on the surface 111 and the cover plate 13 stacked on the outer surface 115 of the liquid crystal panel 11 . The liquid crystal panel 11 includes a display area 112 and a non-display area 113 . The display area 112 of the liquid crystal panel 11 is provided with a fingerprint detection area 114 . The fingerprint module 2 is disposed on the inner surface 111 of the non-display area 113 of the display screen 1 . The orthographic projection of the fingerprint module 2 on the inner surface 111 and the orthographic projection of the backlight module 12 on the inner surface 111 are staggered and a gap is formed therebetween.

The fingerprint module 2 includes a receiver 21 , a transmitter 22 and a collimating element 26 . The emitting surface 221 of the emitter 22 is disposed toward the inner surface 111 , and the emitting surface 221 of the emitter 22 and the inner surface 111 are inclined and spaced apart. A first concave space 222 is formed therebetween. The sensing side surface 211 of the receiver 21 is disposed toward the inner surface 111 , the sensing side surface 211 is inclined to the inner surface 111 , and a second concave space 213 is formed between the sensing surface 211 and the inner surface 111 . . The collimating element 26 is formed in the first recessed space 222 and located on the emission light path of the emission surface 221 .

When fingerprint recognition is performed, the emitting surface 221 tilts to emit light signals to the inner surface 111 via the collimation source 26 , and the light signals pass through the fingerprint detection area 114 of the liquid crystal panel 11 and the cover The plate 13 reaches the finger, and after the light signal is reflected by the finger, it passes through the cover plate 13 , the liquid crystal panel 11 , the gap between the fingerprint module 2 and the backlight module 12 and the second The recessed space 213 then reaches the sensing side surface 211 of the receiver 21 and is received by the sensing side surface 211 of the receiver 21 .

In this embodiment, the collimating element 26 is arranged on the emission light path of the emission surface 221, which can reduce the crosstalk of the light and improve the fingerprint identification efficiency.

In this embodiment, the fingerprint module 2 can also be formed with a reflective element, and the reflective element can be disposed on the side wall of the second recessed space 213 to reflect more light signals to the sensing side surface 211 Of course, it can also be set at other positions that are favorable for the light signal to reach the sensing side surface 211 .

It can be understood that the number of transmitters 22 in the above-mentioned first to ninth embodiments may be one or more, and is not limited to the above-mentioned embodiments.

It can be understood that the recessed space and the dielectric layer in the foregoing embodiments can be substituted for each other, which will not be repeated here.

It can be understood that the parts not mentioned in the above-mentioned second and ninth embodiments can be referred to the description of the first embodiment.

The above are some embodiments of the present application. It should be pointed out that for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can also be made, and these improvements and modifications may also be regarded as The protection scope of this application.

Claims (16)

1. A display screen assembly, characterized in that, comprising: A display screen, the display screen includes a liquid crystal panel and a backlight module stacked on the inner surface of the liquid crystal panel, the liquid crystal panel includes a display area and a non-display area, and the display area of the liquid crystal panel is provided with fingerprint detection area; and A fingerprint module, the fingerprint module is arranged on the inner surface of the non-display area of the display screen, and the orthographic projection of the fingerprint module on the inner surface and the backlight module on the inner surface The orthographic projections are staggered, and the fingerprint module is configured to receive a detection signal returned from the fingerprint detection area through finger reflection, and generate fingerprint information according to the received detection signal. 2 . The display screen assembly of claim 1 , wherein the fingerprint module comprises a receiver and a transmitter; the transmitter is used for transmitting a detection signal to the fingerprint detection area; the receiver is used for receiving The transmitter sends out a detection signal from the fingerprint detection area that is reflected and returned by the finger, and generates fingerprint information according to the received detection signal. 3 . The display screen assembly according to claim 2 , wherein the fingerprint module further comprises a controller, and the controller is used to control the opening and closing of the transmitter; when the liquid crystal panel is on a bright screen. 4 . When the LCD panel is in the off-screen state, the light source required for fingerprint recognition is provided by the backlight module, and the controller controls the transmitter to turn off; when the liquid crystal panel is in the off-screen state, the controller controls the transmitter to emit detection Signal. 4. The display screen assembly according to any one of claims 2 to 3, wherein the emitting surface of the emitter is parallel to, perpendicular to, or at an oblique angle to the inner surface. 5. The display screen assembly according to any one of claims 2 to 4, wherein the sensing side surface of the receiver and the emitting surface of the transmitter face different directions. 6. The display screen assembly according to any one of claims 2 to 5, wherein the emission surface of the emitter is directly exposed to the fingerprint module or a dielectric layer is formed on the emission surface of the emitter . 7. The display screen assembly according to any one of claims 2 to 6, wherein the fingerprint module further comprises a collimating element, and the collimating element is formed on the emitted light of the emitting surface of the emitter on the way. 8 . The display screen assembly according to claim 1 , wherein the fingerprint module comprises a receiver, and the receiver is configured to receive the fingerprint reflected from the fingerprint detection area and returned by the finger from the backlight module. 9 . optical signal, and generate fingerprint information according to the received optical signal. 9 . The display screen assembly according to claim 2 , wherein the orthographic projection of the fingerprint module on the inner surface and the orthographic projection of the backlight module on the inner surface are the difference between the orthographic projection of the fingerprint module on the inner surface. 10 . A gap is formed therebetween, and the gap serves as a passage for the detection signal. 10. The display screen assembly according to any one of claims 2 to 9, wherein the sensing side surface of the receiver is parallel to, perpendicular to, or at an oblique angle to the inner surface. 11. The display screen assembly according to any one of claims 2 to 10, wherein the emitting surface of the emitter is parallel to, perpendicular to, or at an oblique angle to the inner surface; The sensing side of the receiver and the emitting surface of the transmitter face in different directions. 12. The display screen assembly according to any one of claims 2 to 11, wherein the fingerprint module further comprises a light-collecting element, and the light-collecting element is formed on the sensing side of the receiver to receive light On the way, the light collecting element and the sensing side surface of the receiver have a predetermined distance. 13. The display screen assembly according to any one of claims 2 to 12, wherein the fingerprint module further comprises a light-converting element, and the light-converting element is formed on the light-receiving side of the receiver. On the way, the light converting element is used to change the direction of the detection signal incident on the sensing side of the receiver. 14 . The display screen assembly of claim 13 , wherein the light-incident surface of the light-reversing element is an inclined surface inclined relative to the inner surface, and the light-emitting surface of the light-reversing element is relative to the The inner surface is a vertical plane perpendicular to the inner surface, and the light converting element is used for converting the obliquely incident detection signal into the detection signal perpendicularly incident on the sensing side surface of the receiver. 15 . The display screen assembly of claim 8 , wherein the orthographic projection of the fingerprint module on the inner surface and the orthographic projection of the backlight module on the inner surface are seamlessly connected. 16 . 16. An electronic device, characterized by comprising the display screen assembly according to any one of claims 1 to 15.