CN109901755B - Touch device and touch display device using same - Google Patents
Touch device and touch display device using same Download PDFInfo
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- CN109901755B CN109901755B CN201910114552.8A CN201910114552A CN109901755B CN 109901755 B CN109901755 B CN 109901755B CN 201910114552 A CN201910114552 A CN 201910114552A CN 109901755 B CN109901755 B CN 109901755B
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Abstract
The invention provides a touch device and a touch display device using the same, wherein the touch device comprises: a touch area including a first detection cell matrix arranged at a first grid distance; a fingerprint detection area including a second detection cell matrix arranged at a second grid distance; and the control circuit is used for controlling the detection operation of the touch area and the fingerprint detection area and adjusting the effective grid distance of the fingerprint detection area according to a first touch position, wherein when the control circuit judges that the first touch position is positioned in the touch area, the control circuit controls the fingerprint detection area to carry out the detection operation at a third grid distance which is greater than the second grid distance, and when the control circuit judges that the first touch position is positioned in the fingerprint detection area, the control circuit controls the fingerprint detection area to carry out the detection operation at the second grid distance.
Description
The present application is a divisional application of the chinese invention patent application having an application number of 201410440277.6, an application date of 2014, 09/01, and a title of "touch display device and operating method thereof".
Technical Field
The present invention relates to a touch display device, and more particularly, to a touch display device with touch and fingerprint recognition functions and an operating method thereof.
Background
With the prevalence of digital devices, the security of digital information is also gradually emphasized, and conventionally, in addition to the fact that the user password may be stolen by others, by requiring the user to input the password, in order to further improve the security, the user is required to reset a set of passwords every predetermined period, so that the user may forget the password and cannot log in the system.
In recent years, physiological features have become a way to secure digital information instead of user passwords, wherein fingerprints are used as an authentication way for logging in systems because of their uniqueness and convenient operation. However, the separated fingerprint identification device is inconvenient to use, and therefore, the separated fingerprint identification device can be preferably matched with a peripheral device of a computer system to perform identity authentication.
Disclosure of Invention
In view of the above, the present invention further provides a touch display device including a touch panel with a built-in fingerprint detection function and an operating method thereof.
The invention provides a touch display device and an operation method thereof, wherein a fingerprint detection area of the touch display device has the functions of touch detection and fingerprint detection at the same time.
The invention also provides a touch display device and an operating method thereof, which can adjust the effective grid distance of the fingerprint detection area according to different operating conditions.
The invention provides a touch device which comprises a touch area, a fingerprint detection area and a control circuit. The touch area includes a first detection cell matrix arranged at a first grid distance. The fingerprint detection area includes a second detection cell matrix arranged at a second grid distance. The control circuit is used for controlling the touch area and the detection operation of the fingerprint detection area, and adjusting the effective grid distance of the fingerprint detection area according to a first touch position, wherein when the control circuit judges that the first touch position is located in the touch area, the control circuit controls the fingerprint detection area to carry out the detection operation with a third grid distance larger than a second grid distance, and when the control circuit judges that the first touch position is located in the fingerprint detection area, the control circuit controls the fingerprint detection area to carry out the detection operation with the second grid distance.
The invention also provides a touch display device, which comprises a display and a touch device. The display includes a substrate. The touch device is combined with the substrate and comprises a touch area, a fingerprint detection area and a control circuit. The touch area includes transparent electrodes disposed at a first grid distance. The fingerprint detection area includes transparent electrodes disposed at a second grid distance, wherein the second grid distance is less than the first grid distance. The control circuit is used for controlling the touch area and the detection operation of the fingerprint detection area, and adjusting the effective grid distance of the fingerprint detection area according to a first touch position, wherein when the first touch position is judged to be located in the fingerprint detection area, the control circuit is coupled with all transparent electrodes of the fingerprint detection area to perform the detection operation, and when the first touch position is judged not to be located in the fingerprint detection area, the control circuit is coupled with only partial transparent electrodes of the fingerprint detection area to perform the detection operation.
The invention also provides a touch display device, which comprises a display and a touch device. The display includes a substrate. The touch device is combined with the substrate and comprises a touch area, a fingerprint detection area and a control circuit. The touch area includes transparent electrodes disposed at a first grid distance. The fingerprint detection area includes transparent electrodes disposed at a second grid distance, wherein the second grid distance is less than the first grid distance. The control circuit is used for controlling the touch area and the detection operation of the fingerprint detection area, and adjusting the effective grid distance of the fingerprint detection area according to a first touch position, wherein when the first touch position is judged to be located in the fingerprint detection area, the control circuit drives all transparent electrodes of the fingerprint detection area to perform the detection operation, and when the first touch position is judged not to be located in the fingerprint detection area, the control circuit is not coupled with the transparent electrodes of the fingerprint detection area.
In order that the manner in which the above recited and other objects, features and advantages of the present invention are obtained will become more apparent, a more particular description of the invention briefly described below will be rendered by reference to the appended drawings. In the description of the present invention, the same components are denoted by the same reference numerals and will be described later.
Drawings
Fig. 1 is a schematic view of a touch display device according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an element configuration of a touch display device according to an embodiment of the invention;
FIG. 3 is a flowchart illustrating an operating method of a touch display device according to an embodiment of the invention;
fig. 4 is an operation diagram of a touch display device according to an embodiment of the invention;
fig. 5 is a schematic view of an element configuration of a touch display device according to another embodiment of the invention.
Description of the reference numerals
S30-S331 sub-step
Detailed Description
Fig. 1 is a block diagram of a touch display device 10 according to an embodiment of the invention. The touch display device 10 includes a display 11 and a touch device 13; the touch device 13 may be, for example, a capacitive touch device or a resistive touch device (in the present description, a capacitive touch device is taken as an example), and is coupled to one side of the display surface of the display 11. In other words, the user views the display image of the display 11 through the touch device 13, and therefore the touch device 13 is preferably made of a transparent material, such as a transparent electrode (e.g. indium tin oxide) formed on a glass substrate or a transparent plastic substrate. The display 11 can be, for example, a liquid crystal display, a plasma display, an organic light emitting diode display, etc., without any specific limitation; in this description, a liquid crystal display is taken as an example.
The liquid crystal display includes a first glass substrate 111 and a second glass substrate 113 with a liquid crystal layer 115 interposed therebetween to control light throughput; the display principle of the liquid crystal display is known, and therefore, the description thereof is omitted.
In one embodiment, the touch device 13 is combined on the first glass substrate 111 and disposed opposite to the image display area 117 (or called active area) of the display 11. For example, the touch device 13 includes a transparent substrate and a plurality of transparent electrodes extending in a first direction (e.g., an X direction) and in a second direction (e.g., a Y direction) to form a mutual capacitance (mutual capacitance) therebetween; the transparent electrodes may be formed on the same side or both sides of the transparent substrate, respectively, without any specific limitation. In addition, in some embodiments, the touch device 13 may include only one transparent electrode, which forms a mutual inductance capacitance with other transparent electrodes (e.g., common electrodes) in the display 11. Therefore, when the conductor approaches the touch device 13, the capacitance can be changed, and touch detection and fingerprint detection can be performed according to the capacitance variation.
The manner in which a transparent electrode layer on a transparent substrate forms a capacitive touch device that is mutually or self-inductive is known, for example, from U.S. patent application No. 2012/0182253, owned by the same assignee as the present application, the disclosure of which is incorporated herein by reference.
It should be noted that, although fig. 1 shows that the touch device 13 is directly disposed on the first glass substrate 111, the invention is not limited thereto. The touch device 13 may be bonded to the first glass substrate 111 through other layers, such as a polarizing layer, a protective layer, and/or a dielectric layer.
Referring to fig. 1 and 2, fig. 2 is a schematic diagram of an element configuration of a touch display device 10 according to an embodiment of the invention. The touch device 13 includes a touch area 130, a fingerprint detection area 131, and a control circuit (IC) 15; the touch area 130 and the fingerprint detection area 131 are disposed relative to the image display area 117, for example, through a Graphical User Interface (GUI), so that the touch area 130 and the fingerprint detection area 131 can be corresponding to the relative positions of the image display area 117. It should be noted that the touch area 130 may be substantially equal to the image display area 117, which are shown separately in fig. 2 for illustrative purposes. In other embodiments, the size relationship between the touch area 130 and the image display area 117 may be determined according to different applications, and is not particularly limited.
The touch area 130 includes a first detection cell matrix arranged at a first grid distance (grid distance); wherein each first detection unit refers to a mutual inductance capacitance formed by a pair of transparent electrodes. For example, the first detecting unit matrix may be formed by a plurality of first transparent electrodes 130X extending in a first direction (e.g., X direction) and a plurality of second transparent electrodes 130Y extending in a second direction (e.g., Y direction). The first grid distance may refer to a pitch (pitch) of the first transparent electrodes 130X and/or a pitch of the second transparent electrodes 130Y, for example, the first grid distance may be between 1mm and 10mm, which may be determined according to a panel size and a detection resolution. In addition, the first grid distances in the X direction and the Y direction may be the same or different, and are not particularly limited. In one embodiment, the X-direction and the Y-direction are substantially perpendicular to each other.
The fingerprint detection area 131 includes a second detection cell matrix arranged at a second grid distance; each of the second detecting units is a mutual inductance capacitor formed by a pair of transparent electrodes and is disposed opposite to a portion of the image display region 117. For example, the second detecting unit matrix may be formed by disposing a plurality of third transparent electrodes 131X extending in the first direction X between at least two first transparent electrodes 130X and a plurality of fourth transparent electrodes 131Y extending in the second direction Y between at least two second transparent electrodes 130Y corresponding to the portion of the image display area 117, such as the third transparent electrodes 131X and the fourth transparent electrodes 131Y formed between 4 first transparent electrodes 130X and 4 second transparent electrodes 130Y shown in fig. 2. It should be noted that the number and the positions of the third transparent electrode 131X and the fourth transparent electrode 131Y are determined according to different applications, and are not limited to the number and the positions disclosed in fig. 2, for example, the fingerprint detection area 131 may be located at the lower left corner, the upper right corner, the upper left corner, and the like of the image display area 117. Similarly, the second grid distance may refer to the distance between the third transparent electrodes 131X and/or the distance between the fourth transparent electrodes 131Y, which is much smaller than the first grid distance since the fingerprint detection area 131 is used for detecting fingerprints, for example, the second grid distance may be between 5 μm and 200 μm, which may be determined according to the size and detection resolution of the fingerprint detection area 131. In addition, the second grid distances in the X direction and the Y direction may be the same or different, and are not particularly limited.
It should be noted that, although fig. 2 shows that the fingerprint detection area 131 includes a portion of the first transparent electrode 130X and a portion of the second transparent electrode 130Y, the disclosure is not limited thereto. According to the different routing on the first glass substrate 111, the transparent electrode of the fingerprint detection area 131 may be independent of the transparent electrode of the touch area 130.
The control circuit 15 is used to control the detection operations of the touch area 130 and the fingerprint detection area 131, for example, simultaneously or sequentially. The control circuit 15 is electrically connected to the transparent electrodes 130X, 131X, 130Y, 131Y through the traces 17 on the glass substrate 111. Here, the detecting operation means that the control circuit 15 inputs a driving signal to the transparent electrodes 130X and 131X through the traces 17 and receives a capacitance variation signal, such as a voltage variation signal or a current variation signal, from the transparent electrodes 130Y and 131Y; the control circuit 15 can perform touch detection or fingerprint detection according to the capacitance change signal. That is, in the present embodiment, the transparent electrodes 130X and 131X can be driving electrodes and the transparent electrodes 130Y and 131Y can be sensing electrodes. In other embodiments, the driving and sensing electrodes may be configured in opposite directions without any particular limitation. The drive signal may be, for example, a square wave, a sine wave, or other suitable signal.
In one embodiment, the control circuit 15 may be directly formed on the glass substrate 111 by using a Chip On Glass (COG) or Chip On Film (COF) technique, and is located at a position outside the image display region 117, as shown in fig. 2. The traces 17 may be formed on the glass substrate 111 by using a photolithography Process (lithographics Process Technology), and a portion of the traces 17 may enter into the image display area 117. In one embodiment, the control circuit 15 may be a long strip, which has a low cost and a long length direction; the length direction of the control circuit 15 exceeds the edge of the touch area 130 (or the image display area 117) by a predetermined distance D. Therefore, the portion of the predetermined distance D can be directly electrically connected to the transparent electrodes 130X and 131X through the parallel traces 17. The control circuit 15 is coupled to a printed circuit board PCB (not limited to a printed circuit board, but also a flexible printed circuit FPC) for controlling the operation of the display 11, so as to be coupled to the display 11. It should be noted that, although the length direction of the control circuit 15 in fig. 2 extends in the first direction X, in other embodiments, the length direction of the control circuit 15 may also extend in the second direction Y as long as the length direction exceeds the edge of the touch area 130 by a predetermined distance D.
For example, in one embodiment, the control circuit 15 may be fixedly coupled to the first transparent electrode 130X and the second transparent electrode 130Y, and selectively coupled to the third transparent electrode 131X and the fourth transparent electrode 131Y by controlling a plurality of thin film transistors (not shown); the thin film transistor can be formed directly on the glass substrate 111 by photolithography.
In this specification, the control circuit 15 may further adjust the effective grid distance of the fingerprint detection area 131 according to the first touch position; the effective grid distance refers to an effective electrode distance (effective pitch) between the third transparent electrode 131X, to which the control circuit 15 actually inputs the driving signal, and the fourth transparent electrode 131Y, to which the sensing signal is read. The first touch position refers to a position where a conductor is detected for the first time after the conductor is not detected for a preset time in a non-sleep mode; wherein the preset time is shorter than a waiting time for entering the sleep mode. In some embodiments, in the sleep mode, the touch area 130 may stop detecting and operate after the user authenticates to log in, and the first touch position is located in the fingerprint detection area 13.
In one embodiment, the effective grid distance can be adjusted by partially or fully coupling the third transparent electrode 131X and the fourth transparent electrode 131Y. For example, the control circuit 15 sequentially drives the first transparent electrode 130X and the coupled third transparent electrode 131X and sequentially reads the second transparent electrode 130Y and the coupled fourth transparent electrode 131Y during each scanning period. When the number of the third transparent electrodes 131X and the fourth transparent electrodes 131Y coupled to each other is higher, the effective grid distance is larger; the lower the number of the third transparent electrodes 131X and the fourth transparent electrodes 131Y coupled to each other, the smaller the effective grid distance. It can be appreciated that the control circuit 15 preferably drives or couples portions of the third transparent electrodes 131X equidistantly and reads or couples portions of the fourth transparent electrodes 131Y equidistantly.
In one embodiment, when the control circuit 15 determines that the first touch position (e.g. T1 of fig. 4) is located in the fingerprint detection area 131 (i.e. located within the portion of the third transparent electrodes 131X and the fourth transparent electrodes 131Y), the control circuit controls the fingerprint detection area 131 to perform the detection operation at the second grid distance, i.e. all the third transparent electrodes 131X are used as driving electrodes and all the fourth transparent electrodes 131Y are used as sensing electrodes, or vice versa. For example, the control circuit 15 couples all of the third transparent electrodes 131X and the fourth transparent electrodes 131Y through the thin film transistors, and the electrode distance between two third transparent electrodes 131 and/or two fourth transparent electrodes 131Y is the second grid distance.
In one embodiment, when the control circuit 15 determines that the first touch position (e.g., T1 of fig. 4) is located in the touch area 130 (i.e., located outside the portions of the third transparent electrode 131X and the fourth transparent electrode 131Y), the fingerprint detection area 131 is controlled to perform the detection operation at a third grid distance. In one embodiment, the control circuit 15 is not coupled to the third transparent electrodes 131X and the fourth transparent electrodes 131Y through the thin film transistors, i.e., all of the third transparent electrodes 131X are not driving electrodes and all of the fourth transparent electrodes 131Y are not sensing electrodes. In one embodiment, the control circuit 15 couples a portion of the third transparent electrode 131X and a portion of the fourth transparent electrode 131Y through the thin film transistor. In some embodiments, the third grid distance is greater than the second grid distance and less than or equal to the first grid distance, and the third grid distance is the effective grid distance.
In one embodiment, when the control circuit 15 determines that the continuous touch position enters the fingerprint detection area 131 from the touch area 130 (i.e. enters the inside of the portion outside the portion of the third transparent electrode 131X and the fourth transparent electrode 131Y), for example, as shown in fig. 4, the control circuit 15 controls the fingerprint detection area 131 to perform the detection operation at a third grid distance, for example, the control circuit 15 does not couple the third transparent electrode 131X and the fourth transparent electrode 131Y through the thin film transistor, or couples a part of the third transparent electrode 131X and a part of the fourth transparent electrode 131Y through the thin film transistor. Therefore, the fingerprint detection area 131 can also be used as a detection range for touch operation.
In an embodiment, before the control circuit 15 detects the first touch position, the fingerprint detection area 131 is controlled to perform the detection operation at an initial grid distance, where the initial grid distance may be greater than the second grid distance and less than or equal to the first grid distance. Thereby, the high power consumption required for waiting for detecting a fingerprint can be reduced.
Fig. 3 is a flowchart illustrating an operating method of a touch display device according to an embodiment of the invention, including the following steps: determining a first touch position (step S31); when the first touch position is located in the fingerprint detection area, controlling the fingerprint detection area to perform fingerprint detection at a minimum grid distance (steps S33-S331); and controlling the fingerprint detection area to perform touch detection at an effective grid distance greater than the minimum grid distance when the first touch position is located in the touch area (steps S32-S321).
Step S31: in the non-sleep mode, the control circuit 15 may adjust the effective grid distance of the fingerprint detection area 131 according to the first touch position (e.g. T1 of fig. 4). Therefore, the control circuit 15 first determines the position of the first touch position T1.
Steps S33-S331: when the first touch position T1 is located in the fingerprint detection area 131, the control circuit 15 determines that the user wants to perform fingerprint recognition, and thus controls the fingerprint detection area 131 to perform fingerprint detection with a minimum grid distance. For example, in one embodiment, the control circuit 15 detects that the first touch position T1 is located in the fingerprint detection area 131 during a first scan, so as to adjust the grid distance to the minimum grid distance during a next scan; wherein the effective grid distance during the first scan is greater than the minimum grid distance. In one embodiment, the minimum grid distance is the distance between the substantially transparent electrodes of the fingerprint detection area 131 (e.g., the second grid distance), which has been described in detail above, and thus is not described herein again.
Steps S32-S321: when the first touch position T1 is located in the touch area 130, the control circuit 15 determines that the user intends to perform a touch operation, so that the detection resolution of the fingerprint detection area 131 can be reduced to control the fingerprint detection area 131 to perform touch detection at an effective grid distance greater than the minimum grid distance; the effective grid distance is determined by the effective electrode distance of the transparent electrode actually driven or coupled by the control circuit 15, which is described in detail above, and therefore will not be described herein again.
In addition, when the control circuit 15 determines that the continuous touch position enters the fingerprint detection area 131 from the touch area 130, it is still determined that the user intends to perform a touch operation to control the fingerprint detection area 131 to perform touch detection at the effective grid distance. However, when the control circuit 15 determines that the conductor leaves the touch surface for a predetermined time before entering the fingerprint detection area 131, it can be regarded as that the first touch position is located in the fingerprint detection area 131, and steps S33-S331 are performed.
In addition, to save overall power consumption, the operating method of this embodiment may further control the fingerprint detection area 131 to perform touch detection at an initial grid distance during the scanning period before the first touch position is detected, where the initial grid distance may be greater than the minimum grid distance and less than or equal to the grid distance of the touch area 130. And when the next scanning period of the first touch position is detected, determining whether to adjust the effective grid distance according to the first touch position.
In other words, in this specification, the control circuit 15 drives or couples all the transparent electrodes of the fingerprint detection area 131 simultaneously only when the first touch position is located in the fingerprint detection area 131, and in other states, the control circuit 15 couples only some or none of the transparent electrodes of the fingerprint detection area 131, such as the third transparent electrode 131X and the fourth transparent electrode 131Y.
Fig. 5 is a schematic view showing a component configuration of a touch display device 10' according to another embodiment of the invention. Fig. 5 is different from fig. 2 in that in fig. 5, the fingerprint detection area 131 'is disposed on the first substrate 111 opposite to the portion (e.g., black area) of the display 11 other than the image display area 117, and similarly, the control circuit 15' can be directly formed on the glass substrate 111 by a process such as Chip On Glass (COG) or Chip On Film (COF), and coupled to the transparent electrode of the touch area 130 'by an Anisotropic Conductive Film (ACF)19, so that the control circuit 15' can still control the detection operations of the touch area 130 'and the fingerprint detection area 131' at the same time. In other words, the touch area 130 'and the fingerprint detection area 131' are respectively disposed such that the touch area 130 'is opposite to the image display area 117 of the display 11 and the fingerprint detection area 131' is opposite to the frame position of the display 11; that is, the fingerprint detection area 131 'is fabricated on another transparent substrate (different from the transparent substrate of the touch area 130') by forming a mutual inductance type capacitor using transparent electrodes. Likewise, the grid distance of the touch area 130 'is greater than the grid distance of the fingerprint detection area 131'.
It should be noted that, although the mutual-inductance-type touch device is taken as an example in the above embodiments, the invention is not limited thereto, and the invention can also be applied to a self-inductance-type touch device or a resistive-type touch device. The touch display device 10 of the embodiment of the invention is applicable to various digital information systems, such as portable electronic devices and fixed electronic devices, and is not particularly limited.
It should be noted that, although the connection or disconnection between the control circuit 15 and the transparent electrodes 131X and 131Y is described by taking thin film transistors as an example in the above embodiments, the invention is not limited thereto. The control circuit 15 can also be selectively coupled to the transparent electrodes 131X and 131Y through its own switching element or signal control. In addition, although the glass substrate is taken as an example in the above embodiments, the substrate is not limited to the glass substrate, and may be a substrate made of other transparent materials.
In summary, fingerprint recognition can be used as an unlocking method for a security lock in digital data because of its uniqueness and convenience. Therefore, the present invention further provides a touch display device (fig. 2 and 4) and an operating method thereof (fig. 3), which can adjust the detection resolution of the fingerprint detection area according to different initial touch positions, so that the fingerprint detection area has both touch detection and fingerprint detection functions, thereby improving the practicability thereof.
Although the present invention has been disclosed by way of examples, it is not intended to be limited thereto, and various changes and modifications can be made by one of ordinary skill in the art without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the scope of the appended claims.
Claims (10)
1. A touch device, the touch device comprising:
a touch area including a first detection cell matrix arranged at a first grid distance;
a fingerprint detection area including a second detection cell matrix arranged at a second grid distance; and
a control circuit for controlling the detection operation of the touch area and the fingerprint detection area and adjusting the effective grid distance of the fingerprint detection area according to a first touch position, wherein
When the control circuit judges that the first touch position is located in the touch area, the control circuit controls the fingerprint detection area to perform the detection operation at a third grid distance which is greater than the second grid distance, and
and when the control circuit judges that the first touch position is located in the fingerprint detection area, the control circuit controls the fingerprint detection area to perform the detection operation at the second grid distance.
2. The touch device of claim 1, wherein when the control circuit determines that a continuous touch location enters the fingerprint detection area from the touch area, the control circuit controls the fingerprint detection area to perform the detection operation at the third grid distance.
3. The touch device of claim 1 or 2, wherein the third grid distance is also less than or equal to the first grid distance.
4. The touch device of claim 1, wherein the control circuitry controls the fingerprint detection area to perform the detection operation at an initial grid distance before detecting the first touch location.
5. The touch device of claim 4, wherein the initial grid distance is greater than the second grid distance and less than or equal to the first grid distance.
6. A touch display device, comprising:
a display, the display comprising a substrate; and
a touch device bonded to the substrate and comprising:
a touch area including transparent electrodes arranged at a first grid distance;
a fingerprint detection area comprising transparent electrodes arranged at a second grid distance, wherein the second grid distance is smaller than the first grid distance; and
a control circuit for controlling the detection operation of the touch area and the fingerprint detection area and adjusting the effective grid distance of the fingerprint detection area according to a first touch position, wherein
When the first touch position is determined to be located in the fingerprint detection area, the control circuit is coupled to all transparent electrodes of the fingerprint detection area to perform the detection operation, and
when the first touch position is not located in the fingerprint detection area, the control circuit is coupled to only a partially transparent electrode of the fingerprint detection area to perform the detection operation.
7. The touch display device of claim 6, wherein the control circuitry controls the fingerprint detection area to perform the detection operation at an initial grid distance before detecting the first touch location, wherein the initial grid distance is greater than the second grid distance and less than or equal to the first grid distance.
8. The touch display device of claim 6, wherein the control circuit is selectively coupled to the transparent electrode of the fingerprint detection area via a plurality of thin film transistors.
9. A touch display device, comprising:
a display, the display comprising a substrate; and
a touch device bonded to the substrate and comprising:
a touch area including transparent electrodes arranged at a first grid distance;
a fingerprint detection area comprising transparent electrodes arranged at a second grid distance, wherein the second grid distance is smaller than the first grid distance; and
a control circuit for controlling the detection operation of the touch area and the fingerprint detection area and adjusting the effective grid distance of the fingerprint detection area according to a first touch position, wherein
When the first touch position is judged to be located in the fingerprint detection area, the control circuit drives all transparent electrodes of the fingerprint detection area to perform the detection operation, and
when the first touch position is not located in the fingerprint detection area, the control circuit is not coupled to the transparent electrode of the fingerprint detection area.
10. The touch display device of claim 9, wherein the control circuitry controls the fingerprint detection area to perform the detection operation at an initial grid distance before detecting the first touch location, wherein the initial grid distance is greater than the second grid distance and less than or equal to the first grid distance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910114552.8A CN109901755B (en) | 2014-09-01 | 2014-09-01 | Touch device and touch display device using same |
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| CN201410440277.6A CN105373269B (en) | 2014-09-01 | 2014-09-01 | Touch control display apparatus and its operation method |
| CN201910114552.8A CN109901755B (en) | 2014-09-01 | 2014-09-01 | Touch device and touch display device using same |
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| CN201410440277.6A Division CN105373269B (en) | 2014-09-01 | 2014-09-01 | Touch control display apparatus and its operation method |
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| CN109901755A CN109901755A (en) | 2019-06-18 |
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| US10503308B2 (en) * | 2016-12-13 | 2019-12-10 | Novatek Microelectronics Corp. | Touch apparatus and touch detection integrated circuit thereof |
| US11036952B2 (en) | 2016-12-13 | 2021-06-15 | Novatek Microelectronics Corp. | Touch apparatus and touch detection integrated circuit thereof |
| CN109359584B (en) * | 2018-10-15 | 2021-06-01 | Oppo广东移动通信有限公司 | Electronic equipment, display assembly, touch panel of display assembly and touch panel preparation method |
| CN112306287A (en) | 2019-08-01 | 2021-02-02 | 联咏科技股份有限公司 | Electronic circuit with display driving, touch sensing and fingerprint sensing functions |
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| JP4941791B2 (en) * | 2007-04-23 | 2012-05-30 | 日本電気株式会社 | Two-dimensional pattern matching method, feature extraction method, apparatus and program used therefor |
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| CN105373269A (en) | 2016-03-02 |
| CN105373269B (en) | 2019-03-15 |
| CN109901755A (en) | 2019-06-18 |
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