TWI687859B - Full-screen fingerprint collection method, touch display panel and handheld device - Google Patents

Abstract

A full-screen fingerprint acquisition method of an integrated touch and display drive system for providing a screen unlocking function on an optical touch screen having an optical sensor array, which includes the following steps: The optical sensor array executes a touch scanning process to detect a finger pressing coordinate on the optical touch screen; a signal readout circuit is used to read a pending from a fingerprint input area in the optical sensor array An identified fingerprint image, wherein the fingerprint input area is generated based on the finger pressing the coordinates; and an application processing unit is used to compare the fingerprint image to be identified with a pre-stored fingerprint image to determine Whether to unlock one of the optical touch screens.

Description

Full-screen fingerprint collection method, touch display panel and handheld device

The invention relates to a fingerprint collection method, in particular to a full-screen fingerprint collection method for screen unlocking.

With the popularity and vigorous development of mobile devices, touch display panels have become indispensable components. In addition, in the latest trend, fingerprint recognition has also become an indispensable function.

In addition, today's common off-screen fingerprint collection technology includes optical fingerprint collection technology and ultrasonic collection technology. Among them, although optical fingerprint collection technology occupies most of the market, but for users who are familiar with the home key of capacitive fingerprint collection technology, In other words, since the touch display panel using optical fingerprint acquisition technology cannot display the fingerprint recognition area on the touch display screen before being awakened, the user must wait until the touch display panel is awakened before being able to touch The fingerprint identification area displayed on the display screen performs fingerprint unlocking operation, which is inconvenient.

Therefore, there is an urgent need in the art for a novel full-screen fingerprint collection method.

One object of the present invention is to disclose a full-screen fingerprint collection method, which can automatically confirm a pressing position of a finger on an optical touch screen, and display a fingerprint input area prompt pattern according to the pressing position for inputting a to-be-recognized The fingerprint and the fingerprint to be recognized to determine whether to unlock the optical touch screen.

Another object of the present invention is to disclose a full-screen fingerprint collection method, which can simultaneously provide touch sensing and fingerprint reading functions on an optical touch screen, so that a user can use the optical touch screen Choose an appropriate location on the screen to input the fingerprint.

To achieve the aforementioned objective, a full-screen fingerprint collection method is proposed to provide a screen unlocking function on an optical touch screen having an optical sensor array, which includes the following steps: using a touch circuit to detect the optical The sensor array executes a touch scanning process to detect a finger pressing coordinate on the optical touch screen; a display driving circuit is used to execute a fingerprint input area prompt pattern display program to press the coordinate on the optical according to the finger A prompt pattern of a fingerprint input area is displayed at a corresponding position of a touch screen; a signal readout circuit is used to read a fingerprint image to be recognized from the corresponding position of the fingerprint input area in the optical sensor array; and An application processing unit performs a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens.

In one embodiment, the touch circuit first transmits the finger pressing coordinates to the application processing unit, and then the application processing unit transmits the finger pressing coordinates to the display driving circuit and the signal readout circuit for The display driving circuit executes the prompt pattern display program in the fingerprint input area, and the signal readout circuit reads the fingerprint image to be recognized.

In one embodiment, the touch circuit directly transmits the finger-pressed coordinates to the display driving circuit and the signal readout circuit for the display driving circuit to execute the fingerprint input area prompt pattern display program and the signal The readout circuit reads the fingerprint image to be recognized.

In one embodiment, before obtaining the finger pressing coordinate, it further has a screen lighting step, wherein the screen lighting step is performed by pressing a power key and a gesture operation on the optical touch screen Or, the optical touch screen can be shaken or turned to start.

In one embodiment, a touch display panel is proposed, which has an optical touch screen having an optical sensor array and a control circuit for driving the optical touch screen, wherein the control The circuit has a touch circuit, a display drive circuit, a signal readout circuit and an application processing unit, and is used to perform a full-screen fingerprint acquisition method to provide a screen unlocking function on the optical touch screen. The method includes the following steps: using the touch circuit to perform a touch scanning process on the optical sensor array to detect a finger pressing coordinate on the optical touch screen; using the display driving circuit to execute a fingerprint input area prompt pattern A display program to display a prompt pattern of a fingerprint input area at a corresponding position of the optical touch screen according to the finger pressing coordinates; use the signal readout circuit to correspond to the fingerprint input area from the optical sensor array Read a fingerprint image to be recognized; and use the application processing unit to perform a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to release one of the optical touch screens Locked state.

In one embodiment, the touch circuit first transmits the finger pressing coordinates to the application processing unit, and then the application processing unit transmits the finger pressing coordinates to the display driving circuit and the signal readout circuit for The display driving circuit executes the prompting pattern display program of the fingerprint input area, and the signal reading circuit reads the fingerprint image to be recognized; or the touch circuit directly transmits the finger pressing coordinate to the display driving circuit and The signal readout circuit is used for the display driving circuit to execute the prompt pattern display program in the fingerprint input area, and the signal readout circuit is used to read the fingerprint image to be recognized.

In one embodiment, the full-screen fingerprint collection method further includes a screen lighting step before obtaining the finger-pressed coordinates, and the screen lighting step is performed by a power key pressing action on one of the optical touch screens Gesture operation or an action to shake or flip the optical touch screen is initiated.

In one embodiment, the touch circuit and the display driving circuit communicate via a serial peripheral interface (SPI), and the touch circuit and the signal readout circuit via an integrated circuit Inter-integrated circuit (I ² C) interface communication.

In an embodiment, a handheld device is proposed, which has a central processing unit and the touch display panel as described above, wherein the central processing unit is used to communicate with the application processing unit.

In one embodiment, the handheld device is a smart phone or a portable computer device.

In order to enable your review committee to further understand the structure, features and purpose of the present invention, the drawings and detailed description of the preferred embodiments are attached as follows.

Please refer to FIGS. 1a-c together, which shows a flowchart of three embodiments of the full-screen fingerprint collection method of the present invention for providing a screen unlocking function on an optical touch screen having an optical sensor array .

As shown in FIG. 1a, the full-screen fingerprint collection method includes the following steps: using a touch circuit to perform a touch scanning process on the optical sensor array to detect a finger pressing on the optical touch screen (step 11); use a display drive circuit to execute a fingerprint input area prompt pattern display program, according to the finger pressing coordinates to present a fingerprint input area prompt pattern at a corresponding position on the optical touch screen (step 12); use A signal readout circuit reads a fingerprint image to be recognized from the optical sensor array corresponding to the fingerprint input area (step 13); and uses an application processing unit to compare the fingerprint image to be recognized with a A comparison procedure is performed on the pre-stored fingerprint images to determine whether to unlock one of the optical touch screens (step 14).

During the execution of the full-screen fingerprint collection method, the application processing unit may participate in the entire control program to complete the screen unlocking.

As shown in FIG. 1b, this embodiment includes the following steps:

Use a touch circuit to perform a touch scanning procedure on an optical sensor array to detect a finger pressing coordinate on an optical touch screen, and transmit the finger pressing coordinate to an application processing unit (step 21) ;

The application processing unit transmits the finger pressing coordinates to a display driving circuit and a signal readout circuit for the display driving circuit to execute a fingerprint input area prompt pattern display program and for the signal readout circuit to read a to-be-recognized Fingerprint image (step 22);

The display driving circuit is used to execute the fingerprint input area prompt pattern display program to present a fingerprint input area prompt pattern at a corresponding position of the optical touch screen according to the finger pressing coordinates (step 23);

Using the signal readout circuit to read the fingerprint image to be recognized from the optical sensor array corresponding to the fingerprint input area (step 24); and

The application processing unit performs a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens (step 25).

In addition, during the execution of the full-screen fingerprint collection method, the application processing unit may only participate in part of the control program to complete the screen unlocking.

As shown in FIG. 1c, this embodiment includes the following steps:

Use a touch circuit to perform a touch scanning procedure on an optical sensor array to detect a finger pressing coordinate on an optical touch screen, and directly transmit the finger pressing coordinate to a display driving circuit and a signal A readout circuit for the display drive circuit to execute a fingerprint input area prompt pattern display program, and for the signal readout circuit to read a fingerprint image to be recognized (step 31);

The display driving circuit is used to execute the fingerprint input area prompt pattern display program to present a fingerprint input area prompt pattern at a corresponding position of the optical touch screen according to the finger pressing coordinates (step 32);

Using the signal readout circuit to read the fingerprint image to be recognized from the optical sensor array corresponding to the fingerprint input area (step 33); and

An application processing unit performs a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens (step 34).

In addition, in the three embodiments of FIGS. 1a-c, before obtaining a finger-pressed coordinate, the method of the present invention may further have a screen lighting step to wake up an optical touch screen, wherein the screen lighting step It can be initiated by a pressing action of a power key, a gesture operation on the optical touch screen, or an action of shaking or flipping the optical touch screen.

To further highlight the technical features of the present invention, the present invention further discloses a touch display panel. Please refer to FIG. 2, which illustrates a block diagram of an embodiment of the touch display panel of the present invention.

As shown in FIG. 2, a touch display panel 100 includes an optical touch screen 110 and a control circuit 120, wherein the optical touch screen 110 has an optical sensor array 111; the control circuit 120 is used to drive The optical touch screen 110 performs a full-screen fingerprint collection method to provide a screen unlocking function on the optical touch screen 110, and the control circuit 120 has a touch circuit 121, a display driving circuit 122, and a signal readout circuit 123和一个应用处理单元124。 123 and an application processing unit 124.

In an embodiment, the full-screen fingerprint collection method includes the following steps:

(1) Use the touch circuit 121 to perform a touch scanning procedure on the optical sensor array 111 to detect a finger pressing coordinate on the optical touch screen 110;

(2) The display driving circuit 122 is used to execute a fingerprint input area prompt pattern display program to present a fingerprint input area prompt pattern at a corresponding position of the optical touch screen 110 according to the finger pressing coordinates;

(3) Use the signal reading circuit 123 to read a fingerprint image to be recognized from the optical sensor array 111 corresponding to the fingerprint input area;

(4) The application processing unit 124 performs a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock the optical touch screen 110.

In another embodiment, the full-screen fingerprint collection method includes the following steps:

(1) Use the touch circuit 121 to perform a touch scanning procedure on the optical sensor array 111 to detect a finger pressing coordinate on the optical touch screen 110, and transmit the finger pressing coordinate to the application processing unit 124;

(2) The application processing unit 124 transmits the finger pressing coordinates to the display driving circuit 122 and the signal readout circuit 123 for the display driving circuit 122 to execute a fingerprint input area prompt pattern display program and for the signal readout circuit 123 to read A fingerprint image to be identified;

(3) The display driving circuit 122 is used to execute the fingerprint input area prompt pattern display program to present a fingerprint input area prompt pattern at a corresponding position of the optical touch screen 110 according to the finger pressing coordinates;

(4) Use the signal readout circuit 123 to read the fingerprint image to be recognized from the optical sensor array 111 corresponding to the fingerprint input area; and

(5) The application processing unit 124 performs a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens 110.

In another embodiment, the full-screen fingerprint collection method includes the following steps:

(1) Use the touch circuit 121 to perform a touch scanning procedure on the optical sensor array 111 to detect a finger pressing coordinate on the optical touch screen 110, and directly transmit the finger pressing coordinate to the display driving circuit 122 And a signal readout circuit 123 for the display drive circuit 122 to execute a fingerprint input area prompt pattern display program, and for the signal readout circuit 123 to read a fingerprint image to be recognized;

(2) The display driving circuit 122 is used to execute the fingerprint input area prompt pattern display procedure to present a fingerprint input area prompt pattern at a corresponding position of the optical touch screen 110 according to the finger pressing coordinates;

(3) Use the signal readout circuit 123 to read the fingerprint image to be recognized from the optical sensor array 111 corresponding to the fingerprint input area; and

(4) The application processing unit 124 performs a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens 110.

In addition, in the above three embodiments, before obtaining a finger-pressed coordinate, the method of the present invention may further have a screen lighting step to wake up the optical touch screen 110, wherein the screen lighting step may be powered by a power source The key pressing action, a gesture operation on the optical touch screen 110 or an action of shaking or flipping the optical touch screen 110 is initiated.

In addition, the touch circuit 121 and the display driving circuit 122 can communicate via a serial peripheral interface (SPI), and the touch circuit 121 and the signal readout circuit 123 can communicate via an integrated circuit bus (inter -integrated circuit; I ² C) interface communication (neither is shown in the figure). Since the SPI and I ² C interfaces are both conventional technologies, they are not going to be further described here.

According to the above description, the present invention further discloses a handheld device. Please refer to FIG. 3, which illustrates a block diagram of an embodiment of the handheld device of the present invention. As shown in FIG. 3, a handheld device 200 has a central processing unit 210 and a touch display panel 220, wherein the composition and functions of the touch display panel 220 are the same as the touch display panel 100 of FIG. 2, and the central processing unit 210 is used to communicate with an application processing unit of the touch display panel 220 (not shown in the figure, and its function is the same as the application processing unit 124 of FIG. 2).

In addition, in a possible embodiment, the handheld device 200 may be a smart phone or a portable computer device.

With the design disclosed above, the present invention has the following advantages:

1. The full-screen fingerprint collection method of the present invention can automatically confirm a pressing position of a finger on an optical touch screen, and display a fingerprint input area prompt pattern according to the pressing position for inputting a fingerprint to be recognized, and recognizing the The fingerprint is to be recognized to decide whether to unlock the optical touch screen.

2. The full-screen fingerprint collection method of the present invention can simultaneously provide the functions of touch sensing and fingerprint reading on an optical touch screen, so that a user can arbitrarily select an appropriate one on the optical touch screen Location to enter fingerprints.

The disclosure of the present invention is a preferred embodiment, and any part of the changes or modifications that are derived from the technical idea of the present invention and easily inferred by those skilled in the art do not deviate from the scope of the patent right of the present invention.

In summary, regardless of the purpose, means and effects of the present invention, it shows that it is very different from the conventional technology, and its first invention is practical and practical, and it does meet the patent requirements of the invention. To benefit society is to pray for the most.

100: touch display panel

110: Optical touch screen

111: Optical sensor array

120: control circuit

121: Touch circuit

122: Display drive circuit

123: Signal readout circuit

124: Application processing unit

200: handheld device

210: central processing unit

220: touch display panel

Step 11: Use a touch circuit to perform a touch scanning procedure on the optical sensor array to detect a finger pressing on the optical touch screen

Step 12: Use a display driving circuit to execute a fingerprint input area prompt pattern display procedure to present a fingerprint input area prompt pattern at a corresponding position of the optical touch screen according to the finger pressing coordinates

Step 13: Use a signal readout circuit to read a fingerprint image to be recognized from the optical sensor array corresponding to the fingerprint input area

Step 14: Use an application processing unit to perform a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens

Step 21: Use a touch circuit to perform a touch scanning procedure on an optical sensor array to detect a finger pressing coordinate on an optical touch screen, and transmit the finger pressing coordinate to an application processing unit

Step 22: The application processing unit transmits the finger pressing coordinates to a display driving circuit and a signal readout circuit for the display driving circuit to execute a fingerprint input area prompt pattern display program and for the signal readout circuit to read A fingerprint image to be recognized

Step 23: Use the display driving circuit to execute the fingerprint input area prompt pattern display program to present a fingerprint input area prompt pattern at a corresponding position on the optical touch screen according to the finger pressing coordinates

Step 24: Use the signal readout circuit to read the fingerprint image to be recognized from the optical sensor array corresponding to the fingerprint input area

Step 25: Use the application processing unit to perform a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens

Step 31: Use a touch circuit to perform a touch scanning procedure on an optical sensor array to detect a finger pressing coordinate on an optical touch screen, and directly transmit the finger pressing coordinate to a display driving circuit And a signal readout circuit for the display drive circuit to execute a fingerprint input area prompt pattern display program, and for the signal readout circuit to read a fingerprint image to be recognized

Step 32: Use the display driving circuit to execute the fingerprint input area prompt pattern display procedure to present a fingerprint input area prompt pattern at a corresponding position on the optical touch screen according to the finger pressing coordinates

Step 33: Use the signal reading circuit to read the fingerprint image to be recognized from the optical sensor array corresponding to the fingerprint input area

Step 34: Use an application processing unit to perform a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens

FIG. 1a illustrates a flowchart of an embodiment of a full-screen fingerprint collection method of the present invention for providing a screen unlocking function on an optical touch screen having an optical sensor array. FIG. 1b shows a flowchart of another embodiment of the full-screen fingerprint collection method of the present invention for providing a screen unlocking function on an optical touch screen having an optical sensor array. FIG. 1c shows a flowchart of another embodiment of the full-screen fingerprint collection method of the present invention for providing a screen unlocking function on an optical touch screen having an optical sensor array. 2 is a block diagram of an embodiment of the touch display panel of the present invention. FIG. 3 is a block diagram of an embodiment of the handheld device of the present invention.

Step 11: Use a touch circuit to perform a touch scanning procedure on the optical sensor array to detect a finger pressing on the optical touch screen

Step 12: Use a display driving circuit to execute a fingerprint input area prompt pattern display procedure to present a fingerprint input area prompt pattern at a corresponding position of the optical touch screen according to the finger pressing coordinates

Step 13: Use a signal readout circuit to read a fingerprint image to be recognized from the optical sensor array corresponding to the fingerprint input area

Step 14: Use an application processing unit to perform a comparison procedure between the fingerprint image to be recognized and a pre-stored fingerprint image to determine whether to unlock one of the optical touch screens

Claims (6)

A full-screen fingerprint acquisition method of an integrated touch and display drive system for providing a screen unlocking function on an optical touch screen having an optical sensor array, which includes the following steps: The optical sensor array executes a touch scanning process to detect a finger pressing coordinate on the optical touch screen; a signal readout circuit is used to read a pending from a fingerprint input area in the optical sensor array Recognized fingerprint image, wherein the fingerprint input area is generated based on the finger pressing the coordinates; an application processing unit is used to compare the fingerprint image to be recognized with a pre-stored fingerprint image to determine whether to Unlocking one of the lock states of the optical touch screen; and using a display drive circuit to execute a fingerprint input area prompt pattern display program to present the finger at a coordinate at a corresponding position of the optical touch screen Prompt pattern in the fingerprint input area; wherein, the touch circuit first transmits the finger pressing coordinate to the application processing unit, and then the application processing unit transmits the finger pressing coordinate to the display driving circuit and the signal readout circuit , For the display drive circuit to execute the prompt pattern display program in the fingerprint input area, and for the signal readout circuit to read the fingerprint image to be recognized; or the touch circuit directly transmits the finger pressing coordinate to the display The driving circuit and the signal readout circuit are used for the display driving circuit to execute the prompt pattern display program in the fingerprint input area, and the signal readout circuit reads the fingerprint image to be recognized. The full-screen fingerprint acquisition method of the integrated touch and display drive system as described in item 1 of the patent scope further includes a screen lighting step before obtaining the finger pressing coordinates, wherein the screen lighting step is powered by a power supply The key pressing action, a gesture operation on the optical touch screen, or an action of shaking or flipping the optical touch screen is initiated. A touch display panel having an optical touch screen with an optical sensor array, a display drive circuit for driving the optical touch screen, and a control circuit, wherein the control circuit has a touch The control circuit, a signal readout circuit and an application processing unit are used to perform a full-screen fingerprint collection method to provide a screen unlocking function on the optical touch screen. The method includes the following steps: Use the touch circuit to perform a touch scanning procedure on the optical sensor array to detect a finger pressing coordinate on the optical touch screen; use the signal readout circuit from one of the optical sensor arrays The fingerprint input area reads a fingerprint image to be recognized, wherein the fingerprint input area is generated according to the coordinate pressed by the finger; the application processing unit performs a comparison between the fingerprint image to be recognized and a pre-stored fingerprint image A comparison procedure to determine whether to unlock one of the optical touch screens; and use the display drive circuit to execute a fingerprint input area prompt pattern display procedure to press the coordinates of the finger on the optical touch screen A prompt pattern of the fingerprint input area is presented at a corresponding position; wherein, the touch circuit first transmits the finger pressing coordinate to the application processing unit, and then the application processing unit transmits the finger pressing coordinate to the display driver A circuit and the signal readout circuit for the display drive circuit to execute the prompt pattern display program in the fingerprint input area, and for the signal readout circuit to read the fingerprint image to be recognized; or the touch circuit uses the finger The pressing coordinate is directly transmitted to the display driving circuit and the signal readout circuit for the display driving circuit to execute the prompt pattern display procedure in the fingerprint input area, and for the signal readout circuit to read the fingerprint image to be recognized. The touch display panel as described in item 3 of the patent application scope, wherein the full-screen fingerprint collection method further has a screen lighting step before obtaining the finger pressing coordinates, and the screen lighting step is performed by a power key pressing action 1. A gesture operation on the optical touch screen or an action of shaking or flipping the optical touch screen is initiated. The touch display panel as described in item 3 of the patent application range, wherein the touch circuit and the display driving circuit communicate through a serial peripheral interface (SPI), and the touch circuit and the The signal readout circuit communicates via an integrated circuit (inter-integrated circuit; I ² C) interface. A handheld device having a central processing unit and the touch display panel as described in any one of items 3-5 of the patent application scope, wherein the central processing unit is used to communicate with the application processing unit, and The handheld device described is a smart phone or a portable computer device.

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