CN209962042U - Display device and electronic equipment using same - Google Patents

Abstract

The application provides a display device, which comprises a backlight module, a liquid crystal display panel arranged on the light emergent side of the backlight module and a functional module arranged on the other side of the backlight module, which is back to the liquid crystal display panel. The functional module is used for identifying biological characteristics through the backlight module and the liquid crystal display panel. The area of the liquid crystal display panel corresponding to the functional module is positioned in the display area of the liquid crystal display panel and is defined as a sensing area. The display area of the liquid crystal display panel comprises a plurality of pixels, and each pixel at least comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which respectively emit three primary colors. The first sub-pixel, the second sub-pixel and the third sub-pixel of each pixel in the sensing region are not simultaneously turned on to display a prompt pattern when biometric identification is performed.

Description

Display device and electronic equipment using same

Technical Field

The present application belongs to the field of optical technology, and in particular, to a display device and an electronic apparatus using the same.

Background

In pursuit of high screen-to-screen visual enjoyment, more and more electronic devices hide some sensors that would otherwise be exposed on the display screen under the display screen. However, for sensors that require interaction with the user to work, such as: the fingerprint sensor, etc. may affect the operation experience and efficiency because the user cannot accurately know the fingerprint detection area after the sensor is hidden under the display screen.

SUMMERY OF THE UTILITY MODEL

The present application provides a display device and an electronic apparatus using the same to solve the above technical problems.

The embodiment of the application provides a display device, which comprises a backlight module, a liquid crystal display panel arranged on the light emergent side of the backlight module, and a functional module arranged on the other side of the backlight module, which is back to the liquid crystal display panel. The functional module is used for identifying biological characteristics through the backlight module and the liquid crystal display panel. The area of the liquid crystal display panel corresponding to the functional module is positioned in the display area of the liquid crystal display panel and is defined as a sensing area. The display area of the liquid crystal display panel comprises a plurality of pixels, and each pixel at least comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which respectively emit red, green and blue primary color light. When the biological characteristic identification is carried out, the liquid crystal display panel displays a prompt pattern in the sensing area so as to prompt a user to carry out characteristic sensing. The first sub-pixel, the second sub-pixel and the third sub-pixel of each pixel in the sensing area are not simultaneously turned on to display the prompt pattern.

In some embodiments, each pixel in the sensing region turns on only the same one of the first, second, and third sub-pixels to display the hint pattern.

In some embodiments, the function module includes a sensing light source and a sensing device, the sensing light source emits sensing light to a sensing object through the backlight module and the liquid crystal display panel, and the sensing device receives the sensing light reflected by the sensing object through the backlight module and the liquid crystal display panel to perform sensing of biometric information.

In some embodiments, the sensing light has a wavelength ranging from 800nm to 1650nm, the backlight module provides white light, and the wavelength ranges from 380nm to 780 nm.

In some embodiments, the sensing light is infrared light.

In some embodiments, the sensing light source includes a light emitting element and a light diffusion structure disposed on a light emitting surface of the light emitting element for diffusing a light beam emitted by the light emitting element.

In some embodiments, the backlight module includes a backlight source, a light guide plate, a reflector plate, and an optical film layer group, the light guide plate includes a light emitting surface and a bottom surface opposite to the light emitting surface, the reflector plate is disposed on the bottom surface of the light guide plate, the optical film layer group is disposed on the light emitting surface of the light guide plate, a through hole is disposed on the optical film layer group, and the functional module emits or/and receives sensing light through the reflector plate, the light guide plate, the through hole, and the liquid crystal display panel.

In some embodiments, the reflective sheet reflects visible light and transmits sensing light.

In some embodiments, the liquid crystal display panel is provided with a filter matching with the emission color of each sub-pixel, the filter is a multi-passband filter, and the filter has a transmittance peak at least in a visible light band and a wavelength of the emission color of the corresponding sub-pixel and in an infrared or near-infrared band range where the sensing light is located.

In some embodiments, the sensing light source further includes a base, the base includes a supporting surface facing the through hole, the light emitting element is disposed on the supporting surface to emit the sensing light toward the through hole, and the light diffusing structure is disposed on the light emitting surface of the light emitting element and is configured to diffuse the light beam emitted by the light emitting element into the sensing light with uniform intensity distribution and diffuse reflection effect with a diffusion angle.

In some embodiments, the base is a single base disposed on one side of the sensing device, or two or more bases symmetrically distributed about the sensing device, and one or more than two of the light-emitting elements are disposed on each base.

In some embodiments, the base is a ring structure surrounding the sensing device, and one light emitting element or two or more light emitting elements symmetrically distributed about the sensing device are disposed on the base.

Embodiments of the present application provide an electronic device, which includes at least one display device, a memory and a processor as described in any of the above embodiments. The memory is pre-stored with a plurality of biometric information relating to the identity of a legitimate user. The processor executes a related identification program to compare the characteristic data of the sensing object sensed by the functional module of the display device with the biological characteristic information of the legal user pre-stored in the memory so as to identify the identity of the sensing object.

The display device and the electronic equipment provided by the embodiment of the application display the preset non-white prompt pattern through the sensing area of the functional module with the biological feature recognition function arranged on the display device, so that a user can conveniently recognize the features, and the use experience of the corresponding biological recognition function of the electronic equipment is improved.

Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.

Drawings

Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present application.

Fig. 2 is a schematic structural diagram of an electronic device according to a second embodiment of the present application.

Fig. 3 is a block diagram of a display control system of an electronic device according to a second embodiment of the present application.

FIG. 4 is one implementation of inserting a cue pattern in the sensing region when the normal display is unlocked.

FIG. 5 is another implementation of inserting a cue pattern in the sensing region when the normal display is unlocked.

FIG. 6 is yet another implementation of inserting a cue pattern in the sensing region when the normal display is unlocked.

Fig. 7 is a flowchart illustrating steps of a display control method for an electronic device according to a second embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any order or number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either mechanically or electrically or in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship or combination of two or more elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different structures of the application. In order to simplify the disclosure of the present application, only the components and settings of a specific example are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repeat use is intended to provide a simplified and clear description of the present application and is not intended to suggest any particular relationship between the various embodiments and/or arrangements discussed. In addition, the various specific processes and materials provided in the following description of the present application are only examples of implementing the technical solutions of the present application, but one of ordinary skill in the art should recognize that the technical solutions of the present application can also be implemented by other processes and/or other materials not described below.

Further, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject technology can be practiced without one or more of the specific details, or with other structures, components, and so forth. In other instances, well-known structures or operations are not shown or described in detail to avoid obscuring the focus of the application.

The Display device 1 provided in the embodiment of the present application may include an Organic Light-Emitting Diode (OLED) Display device, a Liquid Crystal Display (LCD) device 1, or another type of flat panel Display device. In a specific embodiment, the display device 1 may be a touch display screen having both touch detection and display functions, wherein the touch module for touch detection and the display module 34 for image display may be combined or integrated by, for example, an in-cell, an on-cell, an OGS, or other manners, which is not limited in this application.

As shown in fig. 1, a first embodiment of the present application provides a display device 1. The display device 1 comprises a display area D for displaying content. The display device 1 is provided with a functional module 15 with a biological feature recognition function in the interior corresponding to the specific position on the display area D, so that the biological feature recognition function under the screen is realized on the premise of not influencing normal display. The biometric identification includes, but is not limited to, fingerprint identification, palm print identification, two-dimensional face identification, three-dimensional face identification, iris identification, and the like.

The display device 1 includes a liquid crystal display panel 10, a backlight module 12 and a functional module 15. The liquid crystal display panel 10 is disposed on the light-emitting side of the backlight module 12. The functional module 15 is disposed on the other side of the backlight module 12 opposite to the liquid crystal display panel 10. The backlight module 12 provides backlight. The liquid crystal display panel 10 modulates the transmitted backlight according to the content to be displayed to realize display. The functional module 15 can realize the biometric function through the backlight module 12 and the liquid crystal display panel 10 without affecting the display. In the present embodiment, a fingerprint recognition module is described as an example of the functional module 15.

It is to be understood that the positional relationship of the respective members in the description is such that the backlight emission direction is up and the opposite direction is down. For example: with the backlight module 12 as a reference, the liquid crystal display panel 10 is disposed on the light emitting side of the backlight module 12, and the liquid crystal display panel 10 is considered to be disposed above the backlight module 12. The functional module 15 is disposed on the opposite side of the backlight module 12 from the backlight direction, and the functional module 15 is considered to be located below the backlight module 12.

The area of the liquid crystal display panel 10 corresponding to the functional module 15 located below along the vertical direction is still in the display area D of the liquid crystal display panel 10. The functional module 15 needs to perform sensing of biometric feature recognition through a corresponding position on the liquid crystal display panel 10, so a region on the liquid crystal display panel 10 corresponding to the functional module 15 is defined as a sensing region S, the sensing region S can still be normally displayed when no sensing operation is performed, and correspondingly, the display region D of the liquid crystal display panel 10 is divided into a sensing region S and a non-sensing region DS except the sensing region S.

The lcd panel 10 includes a first substrate 100, a tft array circuit 102 disposed on the first substrate 100, a second substrate 104, a liquid crystal layer 106 disposed between the first substrate 100 and the second substrate 104, a color filter layer 105 disposed on the second substrate 104, an upper polarizer 107, a lower polarizer 108, and so on. The display region D of the liquid crystal display panel 10 includes a plurality of pixels P. Each pixel P includes at least a first sub-pixel P1, a second sub-pixel P2, and a third sub-pixel P3 emitting light of three primary colors of red, green, and blue, respectively. The tft array circuit 102 is provided with at least one tft corresponding to each of the sub-pixels P1, P2, or P3 as a switch corresponding to the sub-pixel P1, P2, or P3, and a deflection voltage is applied to the liquid crystal layer 106 in a region corresponding to the sub-pixel P1, P2, or P3 through the tft, and the amount of light transmission in the region corresponding to the sub-pixel P1, P2, or P3 can be controlled by adjusting the deflection voltage.

The color filter layer 105 includes a filter 1050 corresponding to the color of light emitted from each of the sub-pixels P1, P2, or P3. For example: the color filter layer 105 is a red filter 1051 at a position corresponding to the first sub-pixel P1 for emitting red light, a green filter 1052 at a position corresponding to the second sub-pixel P2 for emitting green light, and a blue filter 1053 at a position corresponding to the third pixel for emitting blue light. Each pixel of the display region D of the liquid crystal display panel 10 can mix light of various colors required to be emitted by the corresponding pixel by adjusting the light transmission amount of the sub-pixel P1, P2, or P3 emitting the three primary colors. The optical filter 1050 is a multi-passband optical filter, and has transmittance peak values at least at wavelengths corresponding to relevant colors in a visible light band and in an infrared or near-infrared band range where sensing light is located, so that the optical filter 1050 can display through corresponding three primary colors of light and can also realize characteristic sensing through the sensing light. The sensing light may have a specific wavelength according to sensing principles and application scenarios. In this embodiment, the sensing light is used for sensing a three-dimensional image of a fingerprint or a human face, and may be infrared light or near-infrared light, and the wavelength range is 800 nanometers (nm) to 1650 nm. Therefore, in this embodiment, the transmittance peaks of the red filter 1051 may be 630nm and between 800 and 1650nm, respectively. The peak transmittance of the green filter 1052 may be 525nm and may be between 800 to 1650 nm. The peak transmittance of the blue filter 1053 may be 450nm and may be between 800nm and 1650 nm.

The backlight module 12 includes a backlight source 120, a light guide plate 122, a reflective sheet 124 and an optical film layer set 126. The light guide plate 122 includes a light emitting surface 1220 and a bottom surface 1222 opposite to the light emitting surface 1220. The reflective sheet 124 is disposed on the bottom surface 1222 of the light guide plate 122. The optical film layer group 126 is disposed on the light emitting surface 1220 of the light guide plate 122. The backlight module 121 is provided with a through hole 18 penetrating through the optical film layer group 126.

The functional module 15 is disposed below the reflective sheet 124 at a position corresponding to the through hole 18. In this embodiment, the functional module 15 performs biometric identification by using an optical principle, such as: the system comprises an optical fingerprint identification module, a three-dimensional structured light identification module, a Time of flight (TOF) optical identification module, a binocular vision optical identification module, an iris optical identification module and the like. The function module 15 includes a sensing light source 150 and a sensing device 152. The sensing light emitted from the sensing light source 150 is emitted from the through hole 18 to a sensing object after passing through the reflective sheet 124 and the light guide plate 122, and is reflected by the sensing object and then returns to the sensing device 152 through the through hole 18 for sensing.

In this embodiment, the sensing object is a finger of a user, and is pressed on the sensing region S corresponding to the liquid crystal display panel 1040. The sensed biometric is a fingerprint of the user. It is understood that, in other embodiments, the sensing object may also be a palm, a face, eyes, and the like of the user, and the corresponding biometric features may be a palm print, three-dimensional facial information, an iris, and the like of the user, which is not limited herein.

In this embodiment, the sensing device 152 includes a lens 1520 and an image sensor 1522. The lens 1520 images the sensing light reflected back by the sensing object in focus on the image sensor 1522. The image sensor 1522 forms an image of the corresponding sensing object according to the sensing light reflected by the sensing object, so as to extract feature data related to the sensing object.

The sensing device 152 is disposed opposite the through hole 18. The sensing light source 150 is disposed around the sensing device 152 and emits sensing light toward the through hole 18. The sensing light source 150 includes a light emitting element 1500 and a base 1502. The base 1502 includes a support surface 1503 facing the through-hole 18. The light emitting element 1500 is disposed on the supporting surface 1503 to emit sensing light toward the through hole 18. The light emitting element 1500 may be a semiconductor laser. In this embodiment, the light Emitting element 1500 is a Vertical Cavity Surface Emitting Laser (VCSEL).

The sensing light source 150 further includes a light diffusing structure 1504. The light diffusion structure 1504 is disposed on the light emitting surface of the light emitting element 1500, and is configured to diffuse the light beams emitted by the light emitting element 1500 in a concentrated direction into sensing light beams with uniform intensity distribution and a diffuse reflection effect with a large divergence angle. The light diffusion structure 1504 may be an optical diffusion film plated on the light emitting surface of the light emitting element 1500 or an optical diffusion sheet disposed on the light emitting surface of the light emitting element 1500. The light emitting element 1500 may be disposed on the support surface 1503 of the base 1502. The light emitting element 1500 may also be disposed in a receiving groove (not shown) formed on the supporting surface 1503, so that a light emitting surface of the light emitting element 1500 is flush with the supporting surface 1503.

The sensing light source 150 may be one or more. If the sensing light source 150 is one, it can be disposed on one side of the sensing device 152. If the sensing light source 150 is plural, it can be distributed symmetrically with respect to the sensing device 152. One or more light emitting elements may be correspondingly disposed on each of the bases 1502, and are not particularly limited herein. In other embodiments, the base 1502 of the sensing light source 150 can also be a ring-shaped structure surrounding the sensing device 152. A plurality of the light emitting elements 1500 are symmetrically distributed on the base 1502 about the sensing device 152.

The reflective sheet 124 is disposed above the sensing device 152 and the sensing light source 150. The reflective sheet 124 is disposed on the bottom surface 1222 of the light guide plate 122 opposite to the light emitting surface 1220 of the light guide plate 122, so as to reflect the backlight light used for displaying in the light guide plate 122 back to the light guide plate 122, thereby reducing the backlight loss. The reflective sheet 124 is made of a material selected to reflect backlight light and transmit the sensing light. The backlight light is white light, and the wavelength range is 380nm to 780 nm. The wavelength range of the sensing light is 800nm to 1650 nm.

The light guide plate 122 is used for mixing the backlight light emitted by the backlight source 120 and then emitting the mixed light from the light emitting surface 1220. The light guide plate 122 may be shaped as a thin plate having a uniform thickness or a thin plate having a wedge shape in which the thickness is gradually reduced from one side to the opposite side. One side of the light guide plate 122 is defined as a light incident surface 1224. The backlight source 120 is disposed corresponding to the light incident surface 1224 of the light guide plate 122. The light emitted from the backlight source 120 enters the light guide plate 122 through the light incident surface 1224, is mixed by multiple total reflections at the light guide plate 122, and then exits from the light exiting surface 1220. In the present embodiment, the light guide plate 122 is made of a transparent material, and can transmit the backlight light and the sensing light.

In the present embodiment, the reflective sheet 124 is a separate member from the light guide plate 122. It is understood that, in other embodiments, the reflective sheet 124 may be replaced by a film structure formed on the bottom surface 1222 of the light guide plate 122 by a plating process.

The optical film group 126 includes, but is not limited to, a diffuser 1260 and a light enhancement sheet 1262. The diffusion sheet 1260 is disposed on the light emitting surface 1220 of the light guide plate 122, and is used for diffusing the backlight light emitted from the light guide plate 122 to widen the viewing angle and conceal the pattern formed on the light guide plate 122. The brightness enhancement sheet 1262 may be, but is not limited to, one or more prism sheets. The brightness enhancement film 1262 is disposed on the light emitting side of the diffusion sheet 1260 and is used for gathering backlight light within a certain angle to improve backlight brightness.

The diffusion sheet 1260 and the light intensifying sheet 1262 are respectively provided with the through holes 18 penetrating through themselves for transmitting the sensing light. The aperture of the through-hole 18 is in the range of 1 to 8 mm (Milimeter, mm). The through holes 18 formed in the optical film layer group 126 may have any shape, such as a circle, a rectangle, an oval, or other irregular shape, and the like, and are not limited in this respect. The through hole 18 may be formed at any position of the backlight module 121, for example, may be formed at the center or edge of the backlight module 121, and is not limited herein. In the present embodiment, the through-hole 18 has a circular shape.

Alternatively, in some embodiments, the optical film group 126 may not include a through hole 18, or one of the diffusion sheet 1260 and the light enhancement sheet 1262 may include a through hole 18, or at least one of the diffusion sheet 1260 and the light enhancement sheet 1262 may have a through hole 18 that is not through, and so on.

It is understood that, in some embodiments, the backlight module 121 may further include a processor 11 and a memory 13. The processor 11 is connected to the sensing device 152 to process the characteristic data sensed by the sensing device 152. The memory 13 is connected to the sensing device 152 for storing the collected characteristic data. The processor 11 and memory 13 may be located on the same circuit board as the sensing device 152 and sensing light source 150.

It can be understood that, the display device 1 needs to send and receive sensing light through the functional module 15 disposed below the backlight module 12 to perform biometric identification, and the effective sensing range is the sensing area S in the display area D of the display device 1. In this case, the user cannot know the exact position of the sensing region S, thereby affecting the sensing efficiency. For this reason, the liquid crystal display panel 10 needs to display a preset prompt pattern in the sensing region S to mark the accurate position of the sensing region S on the liquid crystal display panel 10 when sensing. However, if each sub-pixel P1, P2 or P3 of the pixel P in the sensing region S is turned on to display the prompt pattern, the sensing light also passes through the corresponding optical path of each sub-pixel P1, P2 or P3 to realize feature sensing. However, since the sub-pixels P1, P2, or P3 in the same pixel P are close to each other, the sensing light rays returned by the adjacent sub-pixels P1, P2, or P3 in the same pixel P interfere with each other to affect the imaging quality of the sensing light rays reflected by the sensing object on the image sensor 1522, which is most obvious when all the sub-pixels P1, P2, or P3 in the pixel P of the sensing region S are simultaneously turned on to display white light to the maximum, and the effect can be effectively reduced by reducing the turning on degree of the sub-pixels P1, P2, or P3 or turning off some of the sub-pixels P1, P2, or P3 in the same pixel P. That is to say, the imaging of the sensing light is obviously affected when the prompt pattern displayed in the sensing region S is white, and the imaging quality of the sensing light can be effectively improved when the prompt pattern displayed in the sensing region S is not white. Therefore, each pixel P in the sensing region S of the lcd panel 10 can turn on only one of the sub-pixels P1, P2 or P3 to display the prompt pattern, and the sub-pixels P1, P2 or P3 of different pixels P are far away from each other so that the sensing light beams passing through the sub-pixels P do not interfere with each other.

In the present embodiment, each pixel P in the sensing region S turns on only the sub-pixel P1, P2, or P3 for displaying one of the three primary colors to display the cue pattern, for example: only the first sub-pixel P1 for displaying red is turned on, or only the second sub-pixel P2 for displaying green is turned on, or only the third sub-pixel P3 for displaying blue is turned on. That is, the prompt pattern displayed in the sensing region S is a single color pattern, and the color is one of three primary colors, such as: a red pattern, a green pattern, or a blue pattern.

In other embodiments, only one of the sub-pixels P1, P2 or P3 that is turned on in different pixels P in the sensing region S may be the sub-pixel P1, P2 or P3 for displaying one of different three primary colors, as long as the requirement that only one of the sub-pixels P1, P2 or P3 is turned on per pixel P is satisfied. For example: two adjacent pixels P, one of which turns on only the first sub-pixel P1 for displaying red and the other of which turns on only the second sub-pixel P2 for displaying green.

It is to be understood that turning on the sub-pixel P1, P2 or P3 as used herein means adjusting a deflection voltage applied to the liquid crystal layer 106 in a corresponding region of the sub-pixel P1, P2 or P3 by a thin film transistor so that the region of the sub-pixel P1, P2 or P3 can display light.

As shown in fig. 2, a second embodiment of the present application provides an electronic device 2 using the display device 1 provided in the first embodiment, such as an electronic device 2 having a display device 1, for example, a mobile phone, a notebook computer, a tablet computer, an electronic book, a personal digital assistant, a touch interactive terminal device, and the like.

The electronic device 2 includes at least one display device 1 provided in the first embodiment, a memory 20, and a processor 22. The memory 20 is pre-stored with various biometric information related to the identity of a legitimate user, including but not limited to fingerprint information, two-dimensional and three-dimensional information of the face, and iris information. The processor 22 executes a related identification program to compare the feature data of the sensing object sensed by the functional module 15 of the display device 1 with the biometric information of the legitimate user pre-stored in the memory 20 to identify the identity of the sensing object. The electronic device 2 then correspondingly executes related functions according to the identification result, such as: unlocking the screen, paying, logging in the account, entering a next-level menu, opening the authority and the like.

In this embodiment, the function module 15 of the display device 1 senses fingerprint data of the biometric features and identifies the identity of the user according to the sensed fingerprint data.

It is understood that the processor 11 and the memory 13 may not be disposed on the backlight module 12, and the characteristic data sensed by the sensing device 152 may be directly output to the memory 20 and the processor 22 of the electronic device 2 for storage or processing.

As shown in fig. 3, the second embodiment of the present application further provides a display control system 3 operating in the electronic device 2. The display control system 3 is used for controlling the display device 1 to display a preset prompt pattern in the sensing area S during sensing so that a user can sense the prompt pattern quickly and accurately. The Display control system 3 includes feature recognition middleware 30(Features recognition middleware) and a Display Driver 32(Display Driver), a Display module 34, a memory 20, and a processor 22. The feature recognition middleware 30 and the display driving unit 32 may be stored in the memory 20 and executed by the processor 22 to control the display device 1 of the electronic apparatus 2 to display a preset prompt pattern in the sensing region S.

It will be appreciated that the display control system 3 may also interact with an Application (APP) installed in the electronic device 2, for example: the feature recognition middleware 30 responds to a request initiated by the application program (APP) and related to feature recognition and verification, and returns a feedback result related to feature recognition and verification to the application program (APP).

The feature recognition middleware 30 performs interactive control with the display driving unit 32 and other application programs (APP) in the electronic device 2, respectively, and is configured to control the display driving unit 32 to drive the display module 34 to display a preset prompt pattern when receiving a feature sensing request.

The display module 34 may be a hardware device for displaying, for example, including the display apparatus 1 and a corresponding display driving hardware circuit. The display driving unit 32 is configured to drive the display module 34 to display.

The feature sensing request may be triggered in a variety of situations. For example: when the display device 1 of the electronic device 2 is turned off, the feature sensing request may be triggered by pressing a key on the electronic device 2, and may also be triggered by changing the posture of the electronic device 2, such as: when the electronic device 2 is picked up, the gravity sensor arranged in the electronic device 2 can sense the posture change of the electronic device 2 and send out a feature sensing request to confirm whether the electronic device 2 is moved by a legal user. For touch screen equipped electronic devices 2, it is also possible to trigger a feature sensing request by touching or pressing the display device 1 when the screen is off.

If the display device 1 of the electronic device 2 enters the screen locking state, the screen is in a lighted but locked state, which indicates that the electronic device 2 is about to be used or has not been used for a preset time period. At this time, by default, the electronic device 2 needs to perform feature recognition to trigger the feature sensing request.

When the display device 1 of the electronic device 2 normally works, if an application program (APP) needs to perform feature identification to perform identity confirmation, the corresponding application program (APP) sends a feature sensing request to the feature identification middleware 30, the feature identification middleware 30 controls the display driving unit 32 to drive the display module 34 to display a prompt pattern, the application program (APP) is not required to control the display module 34 to display the prompt pattern, and the compatibility of the electronic device 2 for the application program (APP) is improved.

The preset prompt pattern is a non-white pattern. Optionally, in this embodiment, the cue pattern is a single color pattern of one of three primary colors, for example: a red pattern, a green pattern, or a blue pattern. In other embodiments, the prompt pattern may also be a pattern of other colors mixed by three primary colors or a gray pattern. The shape of the prompting pattern can be adjusted according to the type of the feature to be identified, such as: fingerprint patterns, eyes, circles, etc., and are not particularly limited herein.

The feature recognition middleware 30 controls the display driving unit 32 to drive the display module 34 to display after receiving a feature sensing request. The display driving unit 32 controls the on state of the sub-pixels P1, P2 or P3 of the corresponding pixel P in the sensing region S according to the preset color and shape of the cue pattern for displaying. Specifically, in the present embodiment, the display driving unit 32 controls the corresponding pixel P in the sensing region S to turn on only the sub-pixel P1, P2, or P3 for displaying one of the three primary colors to display a monochrome cue pattern for one of the three primary colors.

It can be understood that, when the display device 1 of the electronic apparatus 2 operates normally, the feature recognition middleware 30 responds to a feature sensing request of an application program (APP) and displays a prompt pattern in the sensing region S by controlling the display driving unit 32, so that the prompt pattern overlaps with an original normal display screen. At this time, as shown in fig. 4, the feature recognition middleware 30 may insert a guide layer into a portion of the display area D at least covering the sensing area S through interaction control with the display driving unit 32 to hide or weaken original display content in the portion of the display area D, and control the display module 34 to display the prompt pattern on the guide layer at a position corresponding to the sensing area S through the display driving unit 32. An exit button may also be displayed at the edge of the guide layer so that a user may end the feature sensing operation by clicking the exit button to trigger an exit feature sensing request.

Alternatively, as shown in fig. 5, the feature recognition middleware 30 may also insert a guide layer in the entire display area D through interaction control with the display driving unit 32 after receiving the feature sensing request, so as to completely hide or weaken the original display content, and control the display module 34 to display the prompt pattern on the guide layer at the position corresponding to the sensing area S through the display driving unit 32.

Alternatively, as shown in fig. 6, the feature recognition middleware 30 may further shift the whole of the originally normally displayed picture in the whole display area D out of the position of the sensing area S in a preset direction through the interactive control with the display driving unit 32 after receiving the feature sensing request, and control the display module 34 to display the prompt pattern at the position of the sensing area S through the display driving unit 32.

As shown in fig. 7, the second embodiment of the present application further provides a display control method for the electronic device 2. The display control method comprises the following steps:

step S101: and judging the display state of the electronic equipment 2. Specifically, the display states of the electronic device 2 include a screen-off state, a screen-locking state, and an unlocking state. The screen off state refers to that the screen of the display device 1 of the electronic device 2 is completely turned off, and the electronic device 2 enters a low-energy-consumption sleep state. The screen locking state refers to a state that the screen of the electronic device 2 is lighted but locked, and only a preset desktop pattern can be displayed and touch operation cannot be performed. The unlocking state refers to that the electronic equipment 2 is unlocked and enters a normal working state after passing identity authentication, and the screen of the display device 1 can normally display images and can execute related touch operation. It can be understood that the electronic device 2 may run an Application (APP) in the unlocked state and the currently running Application (APP) may control the screen of the display apparatus 1 to display a corresponding screen.

Step S102: if the electronic device 2 is in the screen-off or unlocked state, it is detected whether a feature sensing request is triggered. In particular, in the screen-off state, the user may select the electronic device 2 by pressing a key on the electronic device, such as: a power key, a volume key, etc. to trigger a feature sensing request, and may also be activated by changing the attitude of the electronic device 2, such as: pick up the electronic device 2 to trigger a feature sensing request. Since it is indicated that the electronic device 2 is probably used when a key on the electronic device 2 is pressed or the electronic device 2 is picked up, the user identity needs to be verified, so that a feature sensing request is triggered accordingly. In the unlocked state, when an application program (APP) needs to perform feature recognition for identity verification, a feature sensing request is triggered accordingly. The feature sensing request is sent to the feature recognition middleware 30 in response. If no feature sensing request is triggered, the current display state of the electronic device 2 is maintained, and the step S101 is returned to periodically detect the latest display state of the electronic device 2.

It is understood that the electronic device 2 is not operated because it enters the lock state, which is generally awakened in the off-screen state or is in the unlock state for a long time. For the first case, as described above, the feature sensing request has been triggered while being awakened in the screen-off state. For the second case, since the electronic device 2 is certainly required to perform identification when it needs to be used again, the feature sensing request is also triggered when entering the lock screen state from the unlock state. Therefore, the feature sensing request is necessarily triggered in the screen locking state, and detection is not required. In some embodiments, the electronic device 2 may wake up in the screen-off state and may enter the unlock state directly after passing the authentication without entering the screen-lock state.

Step S103: the feature recognition middleware 30 displays a non-white cue pattern at the position of the sensing region S through interactive control with the display driving unit 32 in response to the feature sensing request. In this embodiment, the cue pattern is a single color pattern of one of three primary colors, for example: a red pattern, a green pattern, or a blue pattern. In other embodiments, the prompt pattern may also be a pattern of other colors mixed by three primary colors or a gray pattern. The shape of the prompting pattern can be adjusted according to the type of the feature to be identified, such as: fingerprint patterns, eyes, circles, etc., and are not particularly limited herein.

Specifically, in the present embodiment, the display driving unit 32 controls the corresponding pixel in the sensing region S to turn on only the sub-pixel P1, P2, or P3 for displaying one of the three primary colors to display a monochrome cue pattern for one of the three primary colors.

It is understood that the picture normally displayed by the electronic device 2 in the unlocked state may overlap with the prompt pattern that needs to be displayed in the sensing region S. At this time, the operation of the feature recognition middleware 30 processing the picture of the display area D through the interactive control with the display driving unit 32 is as described above, and is not described herein again.

Compared with the prior art, the display device 1, the electronic device 2, the corresponding display control system 3 and the display control method provided by the application display the preset non-white prompt pattern in the sensing area S of the functional module 15 with the biological feature recognition function in the display device 1, so that a user can conveniently perform feature recognition, and the use experience of the corresponding biological recognition function of the electronic device 2 is improved.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the present application, and any modifications, equivalents and improvements made within the spirit and principle of the present application are intended to be included within the scope of the present application.

Claims (10)

1. A display device, characterized in that: comprises a backlight module, a liquid crystal display panel arranged at the light-emitting side of the backlight module and a functional module arranged at the other side of the backlight module opposite to the liquid crystal display panel, the functional module is used for identifying biological characteristics through the backlight module and the liquid crystal display panel, the area of the liquid crystal display panel corresponding to the functional module is positioned in the display area of the liquid crystal display panel and is defined as a sensing area, the display area of the liquid crystal display panel comprises a plurality of pixels, each pixel at least comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which respectively emit red, green and blue primary colors, when the biological characteristic identification is carried out, the liquid crystal display panel displays a prompt pattern in the sensing area to prompt a user to carry out characteristic sensing, the first sub-pixel, the second sub-pixel and the third sub-pixel of each pixel in the sensing area are not simultaneously turned on to display the prompt pattern.

2. The display device of claim 1, wherein: each pixel in the sensing region is only opened to display the prompt pattern in the same one of the first sub-pixel, the second sub-pixel and the third sub-pixel.

3. The display device of claim 1, wherein: the function module comprises a sensing light source and a sensing device, the sensing light source emits sensing light to a sensing object through the backlight module and the liquid crystal display panel, and the sensing device receives the sensing light reflected by the sensing object through the backlight module and the liquid crystal display panel to sense the biological characteristic information.

4. A display device as claimed in claim 3, characterized in that: the wavelength range of the sensing light is 800 nanometers to 1650 nanometers, the backlight light provided by the backlight module is white light, and the wavelength range is 380 nanometers to 780 nanometers.

5. A display device as claimed in claim 3, characterized in that: the sensing light is infrared light.

6. The display device of claim 5, wherein: the sensing light source comprises a light-emitting element and a light diffusion structure, wherein the light diffusion structure is arranged on a light-emitting surface of the light-emitting element and is used for diffusing light beams emitted by the light-emitting element.

7. The display device according to any one of claims 1 to 6, wherein: the backlight module comprises a backlight source, a light guide plate, a reflector plate and an optical film layer group, wherein the light guide plate comprises a light outlet surface and a bottom surface opposite to the light outlet surface, the reflector plate is arranged on the bottom surface of the light guide plate, the optical film layer group is arranged on the light outlet surface of the light guide plate, a through hole is formed in the optical film layer group, and the functional module transmits or/and receives sensing light through the reflector plate, the light guide plate, the through hole and the liquid crystal display panel.

8. The display device of claim 7, wherein: the reflector plate reflects visible light and transmits sensing light.

9. The display device of claim 4, wherein: the liquid crystal display panel is provided with optical filters matched with the light-emitting colors of the sub-pixels corresponding to the sub-pixels respectively, the optical filters are multi-passband optical filters, and the optical filters at least have transmittance peak values in a visible light waveband and a wavelength of the light-emitting color of the corresponding sub-pixel and a range of an infrared band or a near infrared band where sensing light is located respectively.

10. An electronic device, comprising at least one display device according to any one of claims 1 to 9, a memory and a processor, wherein the memory is pre-stored with a plurality of kinds of biometric information related to the identity of a legitimate user, and the processor executes a related identification program to compare the feature data of the sensing object sensed by the functional module of the display device with the biometric information of the legitimate user pre-stored in the memory to identify the identity of the sensing object.

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