TWI683249B - Mobile device with in-display fingerprint sensor - Google Patents

Abstract

A mobile device includes a touch screen, a signal detecting module, a function detecting module, and a control module. The touch screen is configured to display an unlock image which includes a plurality of function icons, wherein one of the plurality of function icons is highlighted. The signal detecting module is configured to detect the impact on the capacitance of the touch screen in response to a user command, thereby providing a corresponding energy value. The function detecting module is configured to monitor the energy value for acquiring an energy variation value. The control module is configured to instruct the touch screen to change the highlighted function in a corresponding manner according to the level of the energy variation value.

Description

Mobile device using under-screen fingerprint sensor

The invention relates to a mobile device, in particular to a mobile device that uses an off-screen fingerprint sensor and selects to execute an application program after unlocking during an unlocking process.

In terms of biometrics for smart mobile devices, there are currently three major identification technologies including fingerprints, faces, and irises. In fingerprint identification, capacitive fingerprint identification is the most mature development, but it needs to be equipped with an identification module on the back of the mobile device. In contrast, under-screen fingerprint recognition can be implemented on existing display screens. As the proportion of full-screen products is increased, the demand for under-screen fingerprint recognition functions is directly expanded.

In existing applications that use off-screen fingerprint technology to unlock the screen, the mobile device will display the location of the fingerprint press on the screen to inform the user, but the rest of the applications require the touch panel to be activated after the screen is unlocked. Not convenient.

The mobile device includes a touch screen, a signal detection module, a function detection module, and a control module. The touch screen is used to receive a user command and display The display includes an unlocking screen of one of a plurality of function patterns, wherein one function pattern in the plurality of function patterns is presented in a visual prompt manner. The signal detection module is used to detect the influence of the user command on the panel capacitance of the touch screen to provide a corresponding energy value. The function detection module is used to monitor the change of the energy value to determine the magnitude of a corresponding energy change value. The control module is used to instruct the touch-sensitive screen to change the function diagrams displayed in a visual manner in the plurality of function diagrams in a first way when it is judged that the energy change value is greater than a first threshold value Mode, and when it is determined that the energy change value is less than a second threshold value, instruct the touch screen to change the function patterns presented in a visible manner among the plurality of function patterns in a second way.

10‧‧‧Touch screen

15‧‧‧Fingerprint recognition scheme

20‧‧‧Signal detection module

30‧‧‧Function detection module

40‧‧‧Control module

210~310‧‧‧Step

A ₁ ~A ₄ ‧‧‧Function diagram

d ₁ ~d ₇ ‧‧‧Distance

FIG. 1 is a functional block diagram of a mobile device according to an embodiment of the invention.

FIG. 2 is a flowchart of the unlocking operation of the mobile device in the embodiment of the present invention.

FIG. 3 is a schematic diagram of the touch screen when the screen is locked in the embodiment of the present invention.

FIG. 4 is a schematic diagram of the touch screen when the unlock screen is displayed in the screen locked state in the embodiment of the present invention.

Figures 5A-5G are schematic diagrams of the touch screen in the embodiment of the present invention when the function pattern is displayed in response to the selection command.

FIG. 1 is a functional block diagram of a mobile device 100 according to an embodiment of the invention. The mobile device 100 includes a touch screen 10, a signal detection module 20, and a function detection module 30, and a control module 40. The touch screen 10 uses capacitive sensing technology and can receive commands issued by the user's finger. The signal detection module 20 can detect the influence of the command issued by the user's finger on the capacitance of the panel, and then provide the corresponding energy value. The function detection module 30 can determine the input event corresponding to the command issued by the user's finger according to the energy value provided by the signal detection module 20. The input event includes a single click command or a long click command when the user's finger touches the screen, or the user's finger is issued by changing the distance from the screen surface without touching the screen Select the instruction. According to the input event judged by the function detection module 30, the control module 40 can instruct the touch screen 10 to adjust the display screen accordingly.

FIG. 2 is a flowchart of the unlocking operation of the mobile device 100 in the embodiment of the present invention, which includes the following steps:

Step 210: The mobile device 100 operates with the screen locked.

Step 220: The signal detection module 20 determines whether a user command is detected; if so, step 230 is performed; if not, step 210 is performed.

Step 230: The control module 40 instructs the touch screen 10 to display an unlock screen containing a plurality of function patterns, and presents one function pattern among the plurality of function patterns in a visual prompt manner.

Step 240: The signal detection module 20 obtains the energy value caused by the user command to the touch screen 10.

Step 250: The function detection module 30 monitors the energy value to determine whether the corresponding energy change value is greater than a first threshold value; if so, step 260 is performed; if not, step 270 is performed.

Step 260: The control module 40 instructs the touch-sensitive screen 10 to change the function patterns presented in a prominent manner among the plurality of function patterns in a first way.

Step 270: The function detection module 30 monitors the energy value to determine whether the corresponding energy change value is less than a second threshold value; if so, step 280 is performed; if not, step 290 is performed.

Step 280: The control module 40 instructs the touch-sensitive screen 10 to change the function patterns presented in a visible manner among the plurality of function patterns in a second way.

Step 290: The function detection module 30 determines whether the energy change value is maintained between the first threshold value and the second threshold value for more than a preset time; if so, step 300 is performed; if not, step 250 is performed.

Step 300: The control module 40 sets the start function after the screen is unlocked by the function pattern presented in the unlocking screen in a visual prompt mode.

Step 310: When the touch screen 10 receives an unlock command, the activation function is executed.

In step 210, when the mobile device 100 operates in a screen locked state, the touch screen 10 displays a lock screen. FIG. 3 is a schematic diagram of the touch screen 10 when the screen is locked in the embodiment of the present invention. The lock screen includes a fingerprint recognition pattern 15 located at a predetermined position on the touch screen 10. The other areas of the lock screen can be all black screens, or the lock screen image preset by the system or customized by the user. However, the display screen of the touch screen 10 in the screen locked state does not limit the scope of the present invention.

When the signal detection module 20 detects a user command in step 220, the control module 40 instructs the touch screen 10 in step 230 to display an unlock screen including a plurality of function patterns. FIG. 4 is a schematic diagram of the touch screen 10 when the unlock screen is displayed when the screen is locked in the embodiment of the present invention. The lock screen includes function patterns A ₁ ~A _M , which respectively correspond to different applications in the mobile device 100. The functional schemes A ₁ to A _M can be customized by the user, or determined by the mobile device 100 according to the most frequently used applications by the user. For the purpose of illustration, Figure 4 shows an embodiment when M=4, in which the function pattern A ₁ corresponds to the dialing function, the function pattern A ₂ corresponds to the Facebook application, and the function pattern A ₃ corresponds to the open browsing The function diagram A ₄ corresponds to the main menu. However, the number and types of functional drawings do not limit the scope of the present invention.

In the embodiment of the present invention, when the touch screen 10 displays the unlock screen, a preset function pattern among the function patterns A ₁ to A _M will be prominently displayed, for example, the functions are presented in bold and larger fonts Schema A ₁ . In other embodiments, the present invention can display the preset function patterns in different colors, different backgrounds, blinking or floating, and so on. However, the way of visually indicating does not limit the scope of the present invention.

In step 240, the signal detection module 20 can obtain the energy value caused by the user command to the panel capacitance of the touch screen 10, so that the function detection module 30 can according to the energy value in steps 250, 270 and 280 Determines the corresponding input event, so that the control module 40 can instruct the touch screen 10 to change the multiple function patterns in the first mode or the second mode in steps 260 and 280 to display The function mode presented in the prompt mode, or the activation function after the screen is unlocked is set in step 300.

For the purpose of illustration, it is assumed that the function detection module 30 determines that the input event corresponding to the user command is the user’s finger in the presence of the energy value provided by the signal detection module 20. The selection command issued by changing the distance from the screen surface while in contact with the screen. Figures 5A~5G are schematic diagrams of the touch screen 10 in accordance with the selection command to visually prompt the function pattern according to the embodiment of the present invention, wherein Figures 5A~5G sequentially show the use during the period when the touch selection command is issued The distance between the user's finger and the surface of the touch screen 10 changes, and the function patterns displayed on the touch screen 10 during the touch selection command are displayed below the graphs 5A-5G. In the present invention, the energy value obtained by the signal detection module 20 is related to the amount of change in the panel capacitance of the touch screen 10 caused by the user's finger movement. When the user draws his finger closer or further away from the touch screen 10 o'clock will produce energy.

In the embodiment shown in FIGS. 5A to 5D, when the user's finger approaches the touch screen 10, the user commands to take away more charge, so the energy value will also increase. Assume that when the distance between the user's finger and the touch screen 10 is d1, the signal detection module 20 can detect the user's command, and at this time, the touch screen 10 will promptly prompt the function pattern A ₁ ~ The functional diagram A _{1 in} A ₄ is shown in Figure 5A. When the user's finger continues to approach the touch screen 10 (d1>d2>d3>d4), the user command will take away more charge, and the function detection module 30 can determine that the energy value is greater than the first threshold (Positive value), and the control module 40 will further instruct the touch screen 10 to change the function patterns presented in a prominent way among the plurality of function patterns in the first way, for example, in a clockwise order The function mode A ₂ ~A ₄ is presented in a visual way, as shown in Figures 5B~5D.

In the embodiment shown in FIGS. 5D to 5G, when the user's finger is far from the touch screen 10, the charge that the user commands to take away becomes less, so the energy value also decreases. Assume that when the user's finger and a distance between the touch screen 10 is d4, the touch screen 10 at this time will prompt conspicuous manner drawings presented functions A ₁ ~ A ₄ A ₄ is a functional diagram of Formula , As shown in Figure 5D. When the user's finger keeps away from the touch screen 10 (d7>d6>d5>d4), the charge that the user commands will take away gradually decreases. At this time, the signal detection module 20 can get less than the second threshold ( Negative value), and then instructs the touch screen 10 to change the function patterns presented in a visible manner in a plurality of function patterns in a second way, for example, in a counter-clockwise order in a visible manner To present the functional diagrams A ₃ ~A ₁ , as shown in Figures 5E~5G.

In the embodiment shown in FIGS. 5A~5G, the function patterns A ₁ ~A _M in the lock screen are arranged in a ring, and the touch screen 10 is to switch the displayed function patterns by the turntable. Time schematic. However, the way in which the functional patterns are presented on the touch screen 10 and the order of the functional patterns displayed by the switching does not limit the scope of the present invention.

As shown in Figures 5A~5G, during the period of the user's command, the user can always pull his finger closer or further away from the touch screen 10 to select the activation function after the screen is unlocked. When the function pattern corresponding to the activation function desired by the user is clearly displayed, the user can stop the finger movement, that is, maintain the distance between the finger and the touch screen 10 at a fixed value (energy value close to 0) and exceed scheduled time. At this time, the function detection module 30 determines in step 290 that the energy value S2 is maintained between the first threshold and the second threshold for more than a preset time, and the control module 40 unlocks in step 300 The function pattern displayed on the screen sets the activation function after the screen is unlocked, so that when the touch screen 10 receives the unlock command in step 310, the mobile device 100 executes the activation function.

Assuming that the user maintains the finger in the state shown in FIG. 5A or FIG. 5G when issuing a user command for more than a predetermined time, the mobile device 100 will set “call” as the activation function after the screen is unlocked. Use finger to touch fingerprint recognition pattern 15 to solve After being locked, the mobile device 100 will directly enter the operation interface for making a call. Assuming that the user maintains the finger in the state shown in FIG. 5B or FIG. 5F when issuing a user command for more than a predetermined time, the mobile device 100 sets “open Facebook” as the activation function after the screen is unlocked, so when used After the user touches the fingerprint recognition pattern 15 to unlock, the mobile device 100 directly opens the Facebook application. Assuming that the user maintains the finger in the state shown in FIG. 5C or FIG. 5F when issuing a user command for more than a predetermined time, the mobile device 100 sets “open Facebook” as the activation function after the screen is unlocked, so when used After the user touches the fingerprint recognition pattern 15 to unlock, the mobile device 100 directly opens the Facebook application. Assuming that the user maintains the finger in the state shown in FIG. 5C or FIG. 5E when issuing the user command for more than a predetermined time, the mobile device 100 sets the “open browser” as the activation function after the screen is unlocked, so when used After the user touches the fingerprint recognition pattern 15 to unlock, the mobile device 100 will directly open the system default or user-defined browser. Assuming that the user maintains the finger in the state shown in FIG. 5D for more than a predetermined time when issuing the user command, the mobile device 100 sets the “main menu” as the activation function after the screen is unlocked, so that when the user touches with the finger After the fingerprint recognition pattern 15 is unlocked, the mobile device 100 will enter the main menu screen.

In the embodiment of the present invention, when the control module 40 sets the activation function after the screen is unlocked by the function pattern displayed in the unlock screen in step 300, a corresponding prompt message may be provided. For example, color change, voice, or vibration can be used to inform the user that the activation function after the screen is unlocked has been set.

In the embodiment of the present invention, after the touch screen 10 receives the unlock command and executes the activation function, the user's finger can also zoom in/out by changing the distance from the screen surface without touching the screen instruction. For example, when the user’s finger When you continue to approach the touch screen 10, the user command will take away more charge. At this time, the function detection module 30 can determine that the energy value is greater than the first threshold (positive value), and the control module 40 will further indicate the touch Control screen 10 to reduce the current screen; when the user's finger keeps away from the touch screen 10, the charge that the user commands will take away gradually decreases, and the signal detection module 20 can get less than the second threshold ( Negative value), and then instruct the touch screen 10 to enlarge the current picture.

In summary, in the mobile device of the present invention, the user can use his finger to approach or move away from the screen during the unlocking process to select the application program that he wants to execute after unlocking, so that after unlocking, the mobile device will directly execute the selected function , And greatly improve the convenience of use.

The above are only the preferred embodiments of the present invention, and all changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

210~310‧‧‧Step

Claims (8)

A mobile device using under-screen fingerprint sensing, including: a touch screen for receiving a first user command and displaying an unlock screen including a plurality of function patterns, wherein the plurality of function patterns A function diagram in is presented in a visual prompt; a signal detection module is used to detect the effect of the first user command on the panel capacitance of the touch screen to provide a corresponding A first energy value; a function detection module for monitoring the change of the first energy value to determine the magnitude of the corresponding first energy change value; and a control module for: when determining the When the first energy change value is greater than a first threshold value, the touch screen is instructed to change the function patterns presented in a visual manner in the plurality of function patterns in a first manner; and when determining the first When an energy change value is less than a second threshold value, the touch screen is instructed to change the function patterns presented in a visible manner in the plurality of function patterns in a second way; when the first energy is judged When the change value is maintained between the first threshold value and the second threshold value for more than a predetermined time, one of the touch screens after unlocking is set according to the function pattern presented in the unobtrusive prompt in the unlocking screen Activation function; and after setting the activation function after the touch screen is unlocked, the activation function is notified by color change, voice or vibration to complete the setting. The mobile device according to claim 1, wherein: The signal detection module is also used to determine whether the first user command is detected; and the control module is also used to: instruct the touch screen to display a Lock screen; and after detecting the first user command, instruct the touch screen to display the unlock screen. The mobile device according to claim 2, wherein: the touch screen is further used to display a screen after unlocking and receive a second user command; the signal detection module is also used to detect the second use The command to influence the capacitance of the panel of the touch screen to provide a corresponding second energy value; the function detection module is also used to monitor the change of the second energy value to determine the corresponding one The magnitude of the second energy change value; and the control module is further used to: when it is determined that the second energy change value is greater than the first threshold value, instruct the touch screen to shrink the picture; and when determining the second energy When the change value is less than the second threshold value, the touch screen is instructed to enlarge the picture. The mobile device according to claim 1, wherein the control module is further used to instruct the touch screen to sequentially select the touch screen in a clockwise direction when the first energy change value is greater than the first threshold value The function schemes in the plurality of function schemes are presented in a prominent way; and During the period when the first energy change value is less than the second threshold value, the touch screen is instructed to sequentially select a function pattern among the plurality of function patterns in a counterclockwise direction to be presented in a visual prompt. The mobile device according to claim 1, wherein the control module is further used to instruct the touch screen to sequentially select the touch screen in a counterclockwise direction when the first energy change value is greater than the first threshold value The function schemes in the plurality of function schemes are presented in a visual prompt; and during the period when the first energy change value is less than the second threshold value, instruct the touch screen to sequentially select the clockwise direction The function schemes in the plurality of function schemes are presented in a prominent prompt manner. A mobile device using under-screen fingerprint sensing, which includes: a touch screen for receiving a first user command, and displaying an unlock screen including a plurality of function patterns, and displaying a screen after unlocking And receive a second user command, wherein one of the plurality of function patterns is presented in a visual prompt; a signal detection module is used to determine whether the first user is detected Command, and detect the effect of the first user command on the panel capacitance of the touch screen to provide a corresponding first energy value, and detect the second user command on the touch The influence caused by the panel capacitance of the screen to provide a corresponding second energy value; a function detection module for monitoring the change of the first energy value to determine the magnitude of the corresponding first energy change value , And monitor the change of the second energy value to judge The magnitude of a second energy change value corresponding to the off; and a control module for: when it is determined that the first energy change value is greater than a first threshold value, instruct the touch screen to come in a first way Change the function pattern presented in a visual way among the plurality of function patterns; when it is judged that the first energy change value is less than a second threshold value, instruct the touch screen to change the method in a second way Function patterns presented in a visual manner among the plurality of function patterns; instructing the touch screen to display a lock screen before detecting the first user command; when detecting the first use After instructing the touch screen to display the unlock screen; when it is determined that the second energy change value is greater than the first threshold value, instructing the touch screen to shrink the screen; and when determining the second energy change value When it is less than the second threshold, the touch screen is instructed to enlarge the picture. A mobile device using under-screen fingerprint sensing, including: a touch screen for receiving a first user command and displaying an unlock screen including a plurality of function patterns, wherein the plurality of function patterns A function diagram in is presented in a visual prompt; a signal detection module is used to detect the effect of the first user command on the panel capacitance of the touch screen to provide a corresponding A first energy value; a function detection module for monitoring the change of the first energy value to determine the corresponding A size of the first energy change value; and a control module for: when it is determined that the first energy change value is greater than a first threshold value, instruct the touch screen to change the plurality of the plurality of in a first way In the function scheme, a function scheme presented in a visual way; during the period when the first energy change value is greater than the first threshold value, instruct the touch screen to sequentially select the plurality of functions in a clockwise direction The function diagrams in the diagrams are presented in a visual prompt; when it is determined that the first energy change value is less than a second threshold value, the touch screen is instructed to change the plurality of function diagrams in a second manner Function patterns presented in a visually-recognized manner; and during the period when the first energy change value is less than the second threshold value, instructing the touch screen to sequentially select the plurality of function patterns in a counterclockwise direction The function diagram in the table is presented in a prominent way. A mobile device using under-screen fingerprint sensing, including: a touch screen for receiving a first user command and displaying an unlock screen including a plurality of function patterns, wherein the plurality of function patterns A function diagram in is presented in a visual prompt; a signal detection module is used to detect the effect of the first user command on the panel capacitance of the touch screen to provide a corresponding A first energy value; a function detection module for monitoring the change of the first energy value to determine the magnitude of the corresponding first energy change value; and a control module for: When it is determined that the first energy change value is greater than a first threshold value, the touch screen is instructed to change the function patterns presented in a visible manner among the plurality of function patterns in a first way; The period during which the first energy change value is greater than the first threshold value instructs the touch screen to sequentially select the function patterns in the plurality of function patterns in a counter-clockwise direction to be presented in a visual prompt manner; When the first energy change value is less than a second threshold value, instruct the touch screen to change the function patterns presented in a visual manner in the plurality of function patterns in a second way; and in the first The period during which the energy change value is less than the second threshold value instructs the touch screen to sequentially select the function patterns of the plurality of function patterns in a clockwise direction to be presented in a visual prompt.

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