Electronic device

Abstract

The present disclosure provides an electronic device, belonging to the field of electronic technology. The electronic device includes a cover plate, a liquid crystal module, a backlight module, and a receiving module arranged in sequence from top to bottom, as well as a light source and a light guide strip; the light source is located on the lower side of the backlight module, the first end of the light guide strip is connected to the light source, and the second end is connected to the cover plate. The light guide strip is used to conduct the light emitted by the light source to the cover plate; the light is transmitted through the cover plate and then transmitted to the biological part above the cover plate, and is reflected by the biological part to the receiving module. The receiving module performs photoelectric conversion based on the received light to generate an electrical signal for indicating the biological part. Since the volume of the light guide strip is smaller than that of the light source, the occupied area of the cover plate on the front panel is reduced, the influence on the areas of the liquid crystal module and the backlight module is reduced, and further the area of the non-display area of the electronic device is reduced, improving the space utilization rate.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technologies, and in particular, to an electronic device. Background Art

[0002] With the rapid development of electronic devices, in order to make the display screen occupy a relatively large proportion on the front panel of the electronic device, a button for fingerprint recognition is usually no longer provided on the front panel. Therefore, how to implement fingerprint recognition through the display screen of the electronic device has become an urgent problem to be solved.

[0003] In the related art, an electronic device includes a cover plate, a liquid crystal module, a backlight module, a fingerprint sensor, and an infrared light source. The cover plate is attached to the upper side of the liquid crystal module, and the backlight module is attached to the lower side of the liquid crystal module. The fingerprint sensor is located below the backlight module, and the infrared light source is located below the cover plate and on the side of the liquid crystal module, and the infrared light source points to the cover plate. The infrared light source emits infrared rays to the cover plate, and the biological part of the user reflects the infrared rays to the cover plate. After passing through the liquid crystal module and the backlight module, the fingerprint sensor receives the infrared rays to generate a fingerprint image, and subsequent recognition and unlocking are performed based on the fingerprint image.

[0004] However, since the infrared light source is located below the cover plate and on the side of the liquid crystal module, and the volume of the infrared light source is usually large, the area occupied on the front cover plate of the electronic device is large, which affects the areas of the liquid crystal module and the backlight module, resulting in a large non-display area of the electronic device and low space utilization rate. Summary of the Invention

[0005] The present disclosure provides an electronic device, which can overcome the problems of large non-display area and low space utilization rate of the electronic device in the related art. The technical solutions are as follows:

[0006] In a first aspect, an electronic device is provided. The electronic device includes: a cover plate, a liquid crystal module, a backlight module, and a receiving module arranged in sequence from top to bottom; and a light source and a light guide strip;

[0007] The light source is located below the backlight module. The first end of the light guide strip is connected to the light source, and the second end of the light guide strip is connected to the cover plate. The light guide strip is used to conduct the light emitted by the light source to the cover plate;

[0008] The light passes through the cover plate and is transmitted to the biological part above the cover plate, and is reflected by the biological part to the receiving module. The receiving module is used to perform photoelectric conversion based on the received light to generate an electrical signal for indicating the biological part.

[0009] In a possible design, the cover plate has a protruding portion protruding from the liquid crystal module; the second end of the light guide strip is connected below the protruding portion of the cover plate.

[0010] In another possible design, the electronic device further includes a light diffusing film material;

[0011] The light diffusing film material is located at the second end of the light guide strip and is used to expand the emission angle of the light emitted by the light guide strip.

[0012] In another possible design, the electronic device further includes an ink coating;

[0013] The ink coating is coated on the lower side of the protruding portion of the cover plate and is located between the cover plate and the second end of the light guide strip, and is used to block other light rays except the light rays.

[0014] In another possible design, the ink coating is an infrared ink coating.

[0015] In another possible design, the electronic device further includes a backlight housing;

[0016] The backlight housing is covered on the outside of the backlight module;

[0017] A through hole opposite to the receiving module is provided on the backlight housing, and the through hole is used to allow the light reflected by the biological part to pass through.

[0018] In another possible design, an absorbing coating is provided on the inner side of the backlight housing.

[0019] In another possible design, a lens is provided between the backlight module and the receiving module.

[0020] In another possible design, the receiving module is an infrared sensor and the light source is an infrared light source.

[0021] In another possible design, the light guide strip is an optical fiber.

[0022] For the electronic device provided by the embodiments of the present disclosure, the light source is arranged below the backlight module, and a light guide strip is used to conduct the light emitted by the light source to the cover plate. Since the volume of the light guide strip is smaller than the volume of the light source, the occupied area of the cover plate on the front panel is reduced, the influence on the areas of the liquid crystal module and the backlight module is reduced, and further the area of the non-display area of the electronic device is reduced, thereby improving the space utilization rate.

[0023] Moreover, by providing a light guide strip in the electronic device, the light emitted by the light source can be conducted through the light guide strip. Therefore, the light source can be disposed at any position of the electronic device, and the angle at which the light source emits light is no longer restricted, improving the flexibility in using the space of the electronic device and enhancing the space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0025] Figure 1 is a schematic structural diagram of an electronic device according to an exemplary embodiment;

[0026] Figure 2 is a schematic structural diagram of another electronic device according to an exemplary embodiment;

[0027] Figure 3 is a schematic structural diagram of another electronic device according to an exemplary embodiment;

[0028] Figure 4 is a schematic structural diagram of another electronic device according to an exemplary embodiment;

[0029] Figure 5 is a schematic structural diagram of another electronic device according to an exemplary embodiment;

[0030] Figure 6 is a flowchart of a method for identifying a biological body part according to an exemplary embodiment;

[0031] Figure 7 is a flowchart of a method for identifying a biological body part according to an exemplary embodiment.

[0032] The reference numerals of the parts in the drawings are explained as follows:

[0033] 1 - cover plate; 2 - liquid crystal module; 3 - backlight module; 4 - receiving module; 5 - light source; 6 - light guide strip; 7 - light diffusing film material; 8 - ink coating; 9 - lens. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without any creative work shall fall within the protection scope of the present disclosure.

[0035] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following will further describe in detail the embodiments of the present disclosure with reference to the accompanying drawings.

[0036] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0037] Figure 1 is a schematic structural diagram of an electronic device shown according to an exemplary embodiment. Refer to Figure 1 and the electronic device includes a cover plate 1, a liquid crystal module 2, a backlight module 3, and a receiving module 4 arranged in sequence from top to bottom, as well as a light source 5 and a light guide strip 6.

[0038] Among them, the electronic device can be a mobile phone, a tablet computer, a personal computer, etc.

[0039] The light source 5 of the electronic device is located below the backlight module 3. The first end of the light guide strip 6 is connected to the light source 5, the second end of the light guide strip 6 is connected to the cover plate 1, and the receiving module 4 is located below the backlight module 3. The light guide strip 6 is used to conduct the light emitted by the light source 5 to the cover plate 1.

[0040] Among them, the cover plate 1, the liquid crystal module 2, and the backlight module 3 in the electronic device are arranged in sequence from top to bottom, that is, the upper side of the liquid crystal module 2 in the electronic device is attached to the lower side of the cover plate 1, and the lower side of the liquid crystal module 2 is attached to the upper side of the backlight module 3.

[0041] The cover plate 1, the liquid crystal module 2, and the backlight module 3 together constitute the display screen of the electronic device, and the cover plate 1 can be a glass cover plate or a transparent cover plate of other materials.

[0042] Among them, the light source 5 in the electronic device can be an infrared light source or other types of light sources, etc. The light guide strip 6 in the electronic device can be an optical fiber or other light guide strips with a light guiding function. The receiving module 4 in the electronic device can be an infrared sensor, an ultrasonic sensor, etc.

[0043] The following details the working principle of the electronic device provided in the embodiments of the present disclosure:

[0044] As Figure 1As shown, the light source 5 emits light outward. After the light guide strip 6 receives the light emitted by the light source 5, it conducts the light to the cover plate 1. After the light is transmitted through the cover plate 1, it is transmitted to the biological part above the cover plate. When the light encounters the biological part, the light penetrates into the biological part. After being reflected by the biological part, a part of the light in the light is reflected from the biological part, and the reflected light is transmitted to the receiving module 4 of the electronic device. The receiving module 4 can then perform photoelectric conversion based on the received light to generate an electrical signal for indicating the biological part.

[0045] Among them, the biological part can be a finger, toe or other part of a person or an animal, and the electrical signal can carry fingerprint information, etc.

[0046] The electronic device may further include a processor. In a subsequent process, the receiving module 4 may also send the generated electrical signal for indicating the biological part to the processor. The processor determines whether the biological part matches the preset biological part indicated by the preset electrical signal according to the received electrical signal and the preset electrical signal. When it is confirmed that the received electrical signal matches the preset electrical signal, the electronic device can perform the corresponding matching operation.

[0047] For example, when the electronic device needs to be unlocked, in the above manner, when it is verified that the received electrical signal matches the preset electrical signal, the electronic device is unlocked. Or, when the electronic device needs to perform a payment operation, in the above manner, when it is verified that the received electrical signal matches the preset electrical signal, the payment operation is performed. Or, when the electronic device needs to enter any application program, in the above manner, when it is verified that the received electrical signal matches the preset electrical signal, the main interface of the application program is entered.

[0048] In the embodiment of the present disclosure, the light source is arranged below the backlight module, and the light guide strip 6 is used to conduct the light emitted by the light source to the cover plate 1. Since the volume of the light guide strip 6 is smaller than the volume of the light source, the occupied area of the cover plate 1 on the front panel is reduced, the influence on the areas of the liquid crystal module 2 and the backlight module 3 is reduced, and thus the area of the non-display area of the electronic device is reduced, improving the space utilization rate.

[0049] Moreover, by arranging the light guide strip 6 in the electronic device, the light emitted by the light source can be conducted through the light guide strip 6. Therefore, the light source can be arranged at any position in the electronic device, and the angle at which the light source emits light is no longer limited, improving the flexibility of using the space of the electronic device and the space utilization rate.

[0050] In a possible design, referring to Figure 2 , the cover plate 1 of the electronic device has a protruding part protruding from the liquid crystal module 2, and the second end of the light guide strip 6 is connected to the lower part of the protruding part of the cover plate 1.

[0051] The cover plate 1 has a protruding portion that protrudes from the liquid crystal module 2. The light guide strip 6 is disposed below the protruding portion of the cover plate 1. When the outgoing light of the light guide strip 6 is transmitted through the protruding portion of the cover plate 1, it is transmitted to the biological part above the protruding portion of the cover plate 1 and is reflected to the receiving module 4 through the biological part.

[0052] Since the light guide strip 6 is only disposed below the protruding portion of the cover plate 1, the protruding portion of the cover plate 1 is a non-display area of the display screen, and the volume of the light guide strip 6 is smaller than the volume of the light source 5. Furthermore, the occupied area of the protruding portion of the cover plate 1 on the front panel is reduced, and the areas of the liquid crystal module 2 and the backlight module 3 are no longer affected, the area of the non-display area of the electronic device is reduced, and the space utilization rate is improved.

[0053] In a possible design, see Figure 3 , the electronic device further includes a light diffusing film material 7, which is located at the second end of the light guide strip 6 and is used to expand the outgoing angle of the outgoing light of the light guide strip.

[0054] When the light guide strip 6 receives the light emitted by the light source 5 at the first end, it conducts the light to the second end, and the light is emitted from the second end to the light diffusing film material 7, and the light diffusing film material 7 expands the outgoing angle of the light.

[0055] When the light reaches the light diffusing film material 7, the conduction direction of the light is along the extension direction of the light guide strip 6. When the light passes through the light diffusing film material 7, the light will refract. Therefore, the outgoing angle of the refracted light emitted from the light diffusing film material 7 is greater than the angle when it reaches the light diffusing film material 7.

[0056] For example, the outgoing angle of the light refracted from the light diffusing film material is 50 degrees, 60 degrees or other values.

[0057] Among them, the light diffusing film material 7 can be an optical fiber or other materials with a refracting function.

[0058] In the embodiment of the present disclosure, by disposing the light diffusing film material 7 at the second end of the light guide strip 6, the light diffusing film material 7 can be used to expand the outgoing angle of the outgoing light of the light guide strip 6. Since the outgoing angle of the light is expanded, it is ensured that the area of the light emitted on the biological part is also expanded, the characteristics of the biological part are comprehensively collected, and the accuracy of the generated electrical signal for indicating the biological part is improved.

[0059] In a possible design, see Figure 4 , the electronic device further includes an ink coating 8, which is coated on the lower side of the protruding portion of the cover plate 1 and is located between the cover plate 1 and the second end of the light guide strip 6.

[0060] Among them, the ink coating 8 allows the light emitted by the light source 5 to pass through and blocks other light rays except those emitted by the light source 5. The ink coating 8 can be an infrared ink coating or other ink coatings.

[0061] For example, when the light source 5 in the electronic device is an infrared light source and the emitted light is also infrared, the ink coating 8 is an infrared ink coating, which only allows infrared rays to pass through and blocks other light rays except infrared rays, preventing unnecessary visible light from being emitted from the protruding portion of the cover plate 1.

[0062] The ink coating 8 provided by the embodiments of the present disclosure can ensure that the light emitted by the light source 5 passes through the cover plate 1 smoothly, while other light rays except this light ray are blocked by the ink coating 8, preventing other light rays from interfering with the light emitted by the light source 5.

[0063] In a possible design, the electronic device further includes a backlight housing, which covers the lower side and the outer side of the backlight module 3.

[0064] Among them, since the backlight module 3 is a module for emitting light in the electronic device and the light is visible light, when the backlight module 3 emits light, light leakage may occur. Therefore, the backlight housing is used to cover the lower side and the outer side of the backlight module 3, and the backlight housing can block the light emitted by the backlight module 3 downward. And since the receiving module 4 is located below the backlight module 3 and the light reflected by the biological body part needs to be emitted through the backlight module 3 to the receiving module 4, a through hole opposite to the receiving module 4 is provided on the backlight housing, and the light reflected by the biological body part can pass through the through hole.

[0065] Among them, the backlight housing can be an iron shell, a plastic shell or other types of shells.

[0066] It should be noted that the backlight housing is not only used to prevent the backlight module 3 from emitting light downward, but also used to fix the liquid crystal module 2 and the backlight module 3 to prevent the liquid crystal module 2 and the backlight module 3 from moving.

[0067] In another possible design, a light-absorbing coating is provided on the inner side of the backlight housing. The light-absorbing coating is used to absorb the light emitted by the light source 5.

[0068] The light reflected by the biological body part will be emitted to the backlight housing, and only the provided through hole in the backlight housing allows the light to pass through, while the remaining light will continue to refract due to the blockage of the backlight housing, resulting in light pollution caused by multiple refractions of the light. At this time, in order to prevent the above situation, a light-absorbing coating is provided on the inner side of the backlight housing. When the light reflected by the biological body part is emitted to the backlight housing, the light-absorbing coating can absorb the light to prevent multiple refractions of the light.

[0069] Among them, the light-absorbing coating can be a coating that absorbs infrared rays or a coating that absorbs other light rays.

[0070] The type of the light-absorbing coating is the same as the type of the light source. For example, when the light source 5 is an infrared light source, the light-absorbing coating is also a coating that absorbs infrared rays.

[0071] In the embodiment of the present disclosure, a light-absorbing coating is provided on the backlight housing. When light is emitted onto the backlight housing, the light-absorbing coating on the backlight housing can absorb the light, preventing light from refracting inside the electronic device and causing light pollution, and providing a stable working environment for the electronic device.

[0072] In a possible design, referring to Figure 5 , the electronic device further includes a lens 9, and the lens 9 is located between the backlight module 3 and the receiving module 4.

[0073] When the light reflected by the biological body part passes through the display module and reaches the lens 9, the lens 9 can converge the light reflected by the biological body part, so that the converged light is emitted to the receiving module 4, and the receiving module 4 performs photoelectric conversion based on the converged light to generate an electrical signal for indicating the biological body part.

[0074] In the embodiment of the present disclosure, the lens 9 is provided between the backlight module 3 and the receiving module 4. By using the lens 9, the received light can be evenly emitted onto the receiving module 4, and the receiving module 4 can perform photoelectric conversion based on the received light to generate an electrical signal for indicating the biological body part. By providing the lens 9, the accuracy of the electrical signal generated by the receiving module 4 is improved.

[0075] Figure 6 is a flowchart of a method for identifying a biological body part shown according to an exemplary embodiment. Referring to Figure 6 , applied to an electronic device, the electronic device includes a cover plate, a liquid crystal module, a backlight module, and a receiving module that are sequentially arranged from top to bottom; and a light source and a light guide strip; the light source is located on the lower side of the backlight module, the first end of the light guide strip is connected to the light source, and the second end of the light guide strip is connected to the cover plate. The light guide strip is used to conduct the light emitted by the light source to the cover plate; the method includes:

[0076] In step 601, the light source emits light;

[0077] In step 602, the light guide strip receives the light and conducts the light to the cover plate;

[0078] In step 603, after the light is transmitted through the cover plate, it is reflected by the biological body part to the receiving module;

[0079] In step 604, the receiving module performs photoelectric conversion based on the received light to generate an electrical signal for indicating a biological body part.

[0080] In step 605, based on the generated electrical signal, biological body part recognition is performed.

[0081] For the biological body part recognition method provided by the embodiments of the present disclosure, a light guide strip is used to conduct the light emitted by the light source to the cover plate. Since the volume of the light guide strip is smaller than the volume of the light source, the occupied area of the protruding part of the cover plate on the front panel is reduced, the influence on the area of the liquid crystal module and the backlight module is reduced, and further the area of the non-display area of the electronic device is reduced, improving the space utilization rate.

[0082] Moreover, by providing a light guide strip in the electronic device, the light emitted by the light source can be conducted through the light guide strip. Therefore, the light source can be arranged at any position of the electronic device, and the angle at which the light source emits light is no longer limited, improving the flexibility of using the space of the electronic device and the space utilization rate.

[0083] In a possible implementation manner, the cover plate has a protruding part protruding from the liquid crystal module, and the second end of the light guide strip is connected to the lower part of the protruding part of the cover plate.

[0084] In another possible implementation manner, the electronic device includes a light diffusing film material, and the light diffusing film material is located at the second end of the light guide strip; conducting the light to the cover plate includes:

[0085] When the light diffusing film material receives the light emitted from the light guide strip, it expands the emission angle of the light and emits the expanded light to the cover plate.

[0086] In another possible implementation manner, the electronic device further includes an ink coating, and the ink coating is coated on the lower side of the protruding part of the cover plate and is located between the cover plate and the second end of the light guide strip; conducting the light to the cover plate includes:

[0087] The ink coating emits the light emitted by the light guide material to the cover plate and blocks other lights except the light.

[0088] In another possible implementation manner, the electronic device further includes a backlight housing, and the backlight housing covers the lower side and the outer side of the backlight module, and a through hole opposite to the receiving module is provided on the backlight housing; the light is reflected by the biological body part to the receiving module, including:

[0089] After the light is reflected by the biological body part, the refracted light is emitted to the receiving module through the through hole.

[0090] In a possible implementation manner, the biological body part recognition method provided by the embodiments of the present disclosure can be applied to the unlocking process of the electronic device. For example, Figure 7As shown in the figure, unlocking the electronic device by using the biological part recognition method provided in the above embodiment includes:

[0091] 1. The electronic device detects an unlocking operation.

[0092] 2. Turn on the light source and receiving module in the electronic device.

[0093] 3. The receiving module receives the light emitted by the light source and reflected by the biological part.

[0094] 4. The receiving module performs photoelectric conversion based on the received light to generate an electrical signal for indicating the biological part.

[0095] 5. The electronic device determines whether the generated electrical signal matches the preset electrical signal. When the match is successful, step 6 is executed. When the match fails, step 3 is executed.

[0096] It should be noted that when the number of times the texture image fails to match the preset texture image is greater than or equal to the preset number N, step 3 is no longer executed, and the unlocking failure interface is directly displayed.

[0097] 6. The electronic device unlocks successfully, and the display screen displays the main interface of the electronic device.

[0098] After considering the specification and practicing the invention disclosed herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0099] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. An electronic device, characterized in that, The electronic device includes: a cover plate (1), a liquid crystal module (2), a backlight module (3), and a receiving module (4) arranged in sequence from top to bottom; and a light source (5) and a light guide strip (6); the volume of the light guide strip (6) is smaller than the volume of the light source (5); The light source (5) is located below the backlight module (3), the first end of the light guide strip (6) is connected to the light source (5), the second end of the light guide strip (6) is connected to the cover plate (1), and the light guide strip (6) is used to conduct the light emitted by the light source (5) to the cover plate (1); The light is transmitted through the cover plate (1) and then transmitted to the biological part above the cover plate (1), and is reflected by the biological part to the receiving module (4). The receiving module (4) is used to perform photoelectric conversion based on the received light to generate an electrical signal for indicating the biological part.

2. The electronic device according to claim 1, characterized in that The cover plate (1) has a protruding portion protruding from the liquid crystal module (2); the second end of the light guide strip (6) is connected to the lower part of the protruding portion of the cover plate (1).

3. The electronic device according to claim 1, wherein The electronic device further includes a light diffusing film material (7); The light diffusing film material (7) is located at the second end of the light guide strip (6) and is used to expand the emission angle of the light emitted by the light guide strip (6).

4. The electronic device according to claim 2, characterized in that, The electronic device further includes an ink coating (8); The ink coating (8) is coated on the lower side of the protruding portion of the cover plate (1) and is located between the cover plate (1) and the second end of the light guide strip (6) to block other light except the light.

5. The electronic device according to claim 4, wherein The ink coating (8) is an infrared ink coating.

6. The electronic device according to claim 1, wherein The electronic device further includes a backlight housing; The backlight housing covers the outside of the backlight module (3); A through hole opposite to the receiving module (4) is provided on the backlight housing, and the through hole is used to allow the light reflected by the biological part to pass through.

7. The electronic device according to claim 6, wherein An absorbing coating is provided on the inner side of the backlight housing.

8. The electronic device according to claim 1, wherein A lens (9) is provided between the backlight module (3) and the receiving module (4).

9. The electronic device according to claim 1, wherein The receiving module (4) is an infrared sensor, and the light source (5) is an infrared light source.

10. The electronic device according to claim 1, wherein The light guide strip (6) is an optical fiber.

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