Pattern unlocking device

Abstract

The present invention discloses a pattern unlocking device, comprising: a housing, a PCB board located in the housing, a keyboard printing layer on the housing, and a capacitive sensing film. The capacitive sensing film is provided with a first capacitive key and a second capacitive key, and the PCB board is provided with a touch chip and a light emitting diode for identifying the first capacitive key and the second capacitive key, lighting up the light emitting diode matching the capacitive key, and forming an unlocking pattern through the through hole and the light guide groove of the housing to realize the pattern unlocking function. The present invention has the advantages of simple implementation, compact structure, and low cost, and is widely used in smart door locks, safes, access control systems, and the like.

Description

Technical Field

[0001] The present invention relates to a capacitive unlocking device, and in particular to a capacitive pattern unlocking device which supports pattern unlocking and has the function of displaying an unlocking pattern. Background Art

[0002] At present, in the password authentication system, the most widely used password form is letter and character password. That is, a combination of a group of letters or characters is used as a password, and the password is submitted to the system to prove one's identity. The unlocking control panel of the existing smart door lock, safe, and access control system usually adopts the input form of character password tapping. The implementation form of this character password tapping can be a mechanical switch type contact switch, or a solution based on capacitive touch or a touch solution based on a combination of touch screen and TFT liquid crystal display technology. These input schemes are all based on the method of character tapping, and the password strength is not high. For security reasons, although the password strength can be strengthened by increasing the password length, it will also increase the difficulty of user memory. Especially in the case of using a mechanical switch type contact switch, as the number of uses increases, the switch contact will also be poor.

[0003] Pattern password is a new identity authentication technology. Different from traditional passwords, pattern password uses pattern as authentication medium, and authenticates through the user's reproduction of pattern or the interaction between the user and the pattern system. Scientific research shows that human memory for words is quite limited, while the ability to remember pattern images is significantly better than the ability for words. For the above reasons, pattern password came into being. It is a new password system that uses pattern as a medium. When users authenticate their identity, they need to perform certain operations on the pattern: reproduction, recognition, and piecing together. Because pattern passwords have a large password space, high password strength, and flexible application methods, they are currently widely used in the unlocking authentication of smart devices, such as pattern unlocking of mobile phones.

[0004] The current pattern unlocking device generally uses a touch solution based on a combination of touch screen and TFT liquid crystal display technology. If this solution is used in smart door locks, safes, and access control systems, the cost will be very high. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a pattern unlocking device, which has a simple implementation method, a compact structure, a reasonable cost, and does not require a high-cost touch solution based on a combination of touch screen and TFT liquid crystal display technology. It is easy to use and easy to integrate the system. Compared with the digital unlocking solution, the present invention is easier to remember.

[0006] According to the first aspect of the present invention, the pattern unlocking device comprises: a housing, a PCB board located in the housing, a keyboard printing layer and a capacitive sensing film. The keyboard printing layer is located above the housing and is provided with character keys. The housing is provided with through holes corresponding to the character keys, and a light guide groove is provided between every two adjacent through holes. The capacitive sensing film is mounted below the keyboard printing layer and is provided with a first capacitive key corresponding to the character key and a second capacitive key corresponding to the adjacent character keys. Each of the first capacitive key and the second capacitive key is designed to be surrounded by silver wire, and the key area surrounded by the silver wire and the disconnected area are set as transparent conductive materials. A light-emitting diode and a touch chip are provided on the PCB board. The light-emitting diode is set at a position corresponding to the through hole and the light guide groove. The touch chip is connected to the capacitive sensing film, and is used to identify the first capacitive key and the second capacitive key that are touched, and light up the light-emitting diode corresponding to the bottom of the first capacitive key that is touched and the light-emitting diode in the light guide groove below the adjacent first capacitive keys that are touched.

[0007] The pattern unlocking device according to the embodiment of the present invention has at least the following technical effects: the user touches the blank space between the character key and every two adjacent character keys of the pattern unlocking device, and the touch chip confirms the unlocking password input by the user by detecting the first capacitive key and the second capacitive key, and forms an unlocking pattern by lighting up the corresponding light-emitting diode, thereby realizing the pattern unlocking function. The pattern unlocking device according to the embodiment of the present invention has the advantages of simple implementation, compact structure and low cost.

[0008] According to some embodiments of the present invention, a light-scattering film is provided on the capacitive sensing film to evenly disperse the light emitted by the light-emitting diode.

[0009] According to some embodiments of the present invention, the light guide groove of the housing is filled with glue.

[0010] According to some embodiments of the present invention, the transparent conductive material is transparent conductive ink.

[0011] According to some embodiments of the present invention, an assembly structure is provided around the shell.

[0012] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1This is a schematic diagram of the overall structure of a pattern unlocking device according to an embodiment of the present invention;

[0015] Figure 2 For the embodiment of the present invention Figure 1 A schematic diagram of the housing structure of the pattern unlocking device shown;

[0016] Figure 3 For the embodiment of the present invention Figure 1 A schematic diagram of the PCB structure of the pattern unlocking device shown;

[0017] Figure 4 Embodiments of the present invention Figure 1 A schematic diagram of the character keyboard printing layer structure of the pattern unlocking device shown;

[0018] Figure 5 For the embodiment of the present invention Figure 1 A schematic diagram of the capacitive sensing film structure of the pattern unlocking device shown;

[0019] Reference numerals:

[0020] Shell 100 , through hole 110 , light guide groove 120 , screw hole 130 , PCB board 200 , light emitting diode 210 , touch chip 220 , keyboard printing layer 300 , character key 310 , capacitive sensing film 400 , first capacitive button 410 , silver wire 411 , conductive material 412 , second capacitive button 420 . DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the descriptions involving orientations, such as up, down, front, back, left, right and center, and the orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as installation and connection should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0024] Reference from Figures 1 to 5As shown, the pattern unlocking device according to the embodiment of the present invention includes: a housing 100 , a PCB board 200 located inside the housing, a keyboard printing layer 300 and a capacitive sensing film 400 .

[0025] The keyboard printing layer 300 is located above the housing 100 and is provided with character keys 310. It is understood that in the art, character keys include numeric keys such as 0, 1, ... 9 and symbol keys such as "*", "#", etc.

[0026] The housing 100 is provided with through holes 110 corresponding to the character keys 310 , and a light guide groove 120 is provided between every two adjacent through holes 110 .

[0027] The capacitive sensing film 400 is mounted below the keyboard printed layer 300, and is provided with a first capacitive button 410 corresponding to the character key 310, and a second capacitive button 420 corresponding to the adjacent character keys 310. Each of the first capacitive button 410 and the second capacitive button 420 is designed to be surrounded by a silver wire 411, and the key area surrounded by the silver wire 411 and the disconnected area are set as a transparent conductive material 412.

[0028] The PCB board 200 is provided with a light emitting diode 210 and a touch chip 220. The light emitting diode 210 is provided at a position corresponding to the through hole 110 and the light guide groove 120. The touch chip 220 is connected to the capacitive sensing film 400, and is used to identify the triggered first capacitive button 410 and the second capacitive button 420, and light up the light emitting diode 210 corresponding to the triggered first capacitive button 410 and the light emitting diode 210 in the light guide groove below the triggered adjacent first capacitive buttons 410, to form an unlocking pattern, and realize the pattern unlocking function.

[0029] In the embodiment of the present invention, a light guide groove 120 is provided below the adjacent character keys 310, and a light emitting diode 210 is provided in the light guide groove 120, so that the light emitting diode 210 between the corresponding adjacent character keys 310 that are touched is lit, thereby ensuring the continuity of the light of the pattern. It can be understood that each capacitive button 410, 420 is surrounded by a disconnected silver wire. On the one hand, the silver wire 411 has a small resistance, which is conducive to the transmission of signals and facilitates the touch chip 220 to recognize touch signals; on the other hand, because the silver wire 411 is opaque, the silver wire 411 is disconnected at the corresponding position where the light guide groove 120 passes, and the transparent conductive material 412 is used to fill the area surrounded by the silver wire 411, in order to prevent the silver wire 411 from blocking the light emitted by the light emitting diode 210, while ensuring the continuity of the conductivity of the capacitive buttons 410, 420, thereby ensuring the continuity of the touch pattern.

[0030] In an embodiment of the present invention, the first capacitor button 410 corresponds to the character key 310 above it. When the user touches the character key 310, the first capacitor button corresponding to the character key 310 is triggered, and the touch chip 220 detects the triggered first capacitor button 410 and lights up the light-emitting diode 210 under the triggered first capacitor button 410; when the user touches the position between the character keys 310 and the corresponding second capacitor button 420 is triggered, the touch chip 220 determines that the human hand has not left the unlocking device; when the user's fingers have not left the unlocking device and continuously touch adjacent character keys 310, the touch chip 220 detects the triggered first capacitor button 410 and the second capacitor button 420 corresponding to the two adjacent character keys 310, and the touch chip 220 lights up the light-emitting diode 210 under the first capacitor button 410 continuously touched by the user and the light-emitting diode 210 in the light guide groove 120 under the second capacitor button 420.

[0031] According to a further embodiment of the present invention, a light diffusion film is provided on the capacitive sensing film 400 to evenly disperse the light emitted by the light emitting diode 210 so that the display light of the unlocking pattern is softer.

[0032] According to a further embodiment of the present invention, the light guide groove 120 is filled with glue. Since the light emitting diode 210 is a point light source, the light emitted by the light emitting diode 210 is diffusely reflected in the glue by filling the light guide groove 120 with glue. The glue plays a role in diverging the light, so that the display light distribution of the unlocking pattern is more uniform.

[0033] According to a further embodiment of the present invention, the transparent conductive material 412 is transparent conductive ink.

[0034] According to a further embodiment of the present invention, an assembly structure, such as a screw hole 130 or a buckle, is provided around the housing 100 .

Claims

1. A pattern unlocking device, characterized in that: include: A housing (100), a PCB board (200) located inside the housing, a keyboard printing layer (300), and a capacitive sensing film (400); The keyboard printing layer (300) is located above the housing (100) and is provided with character keys (310); The housing (100) is provided with through holes (110) corresponding to the character keys (310), and a light guide groove (120) is provided between every two adjacent through holes (110); The capacitive sensing film (400) is mounted below the keyboard printed layer (300), and is provided with a first capacitive button (410) corresponding to the character key (310), and a second capacitive button (420) corresponding to adjacent character keys (310), each of the first capacitive button (410) and the second capacitive button (420) being surrounded by a silver wire (411), and the key area surrounded by the silver wire (411) and the disconnected area being provided with a transparent conductive material (412); A light emitting diode (210) and a touch chip (220) are arranged on the PCB board (200); the light emitting diode (210) is arranged at a position corresponding to the through hole (110) and the light guide groove (120); the touch chip (220) is connected to the capacitive sensing film (400) and is used to identify the first capacitive key (410) and the second capacitive key (420) that are touched, and to light up the light emitting diode (210) corresponding to the bottom of the first capacitive key (410) that is touched and the light emitting diode (210) in the light guide groove (120) below the adjacent first capacitive keys (410) that are continuously touched.

2. The pattern unlocking device according to claim 1, characterized in that: A light diffusion film is provided on the capacitive sensing film (400) for evenly dispersing the light emitted by the light emitting diode (210).

3. The pattern unlocking device according to claim 1, characterized in that: The light guide groove (120) is filled with glue.

4. The pattern unlocking device according to claim 1, characterized in that: The transparent conductive material (412) is transparent conductive ink.

5. The pattern unlocking device according to claim 1, characterized in that: An assembly structure is provided around the shell (100).

Images