CN111273822A - Flexible touch module, display screen and electronic equipment - Google Patents

Flexible touch module, display screen and electronic equipment Download PDF

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Publication number
CN111273822A
CN111273822A CN202010230117.4A CN202010230117A CN111273822A CN 111273822 A CN111273822 A CN 111273822A CN 202010230117 A CN202010230117 A CN 202010230117A CN 111273822 A CN111273822 A CN 111273822A
Authority
CN
China
Prior art keywords
touch
flexible
fingerprint identification
capacitive
fingerprint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010230117.4A
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Chinese (zh)
Inventor
温扬志
邝建邦
李智锋
黄荣兆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yingtian Industrial Shenzhen Co ltd
Original Assignee
Yingtian Industrial Shenzhen Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yingtian Industrial Shenzhen Co ltd filed Critical Yingtian Industrial Shenzhen Co ltd
Priority to CN202010230117.4A priority Critical patent/CN111273822A/en
Publication of CN111273822A publication Critical patent/CN111273822A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/96—Management of image or video recognition tasks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Position Input By Displaying (AREA)

Abstract

The invention relates to a flexible touch module, a display screen and electronic equipment. A flexible touch module comprises a capacitive fingerprint identification diaphragm and a capacitive touch diaphragm which are stacked; the capacitive fingerprint identification membrane comprises a first fingerprint layer, a second fingerprint layer and a first flexible substrate positioned between the first fingerprint layer and the second fingerprint layer; the capacitive touch control membrane comprises a second flexible substrate and a first touch control layer located on one side of the second flexible substrate. The flexible touch module has a fingerprint identification function, when a finger presses the capacitive fingerprint identification membrane, the fingerprint chip identifies whether a fingerprint identification program needs to be started or not in the current action, and if yes, the fingerprint is identified; and if not, entering a touch program. The problem of flexible touch module can not use fingerprint identification is solved. The invention further relates to a display screen comprising the flexible touch module and electronic equipment comprising the display screen.

Description

Flexible touch module, display screen and electronic equipment
Technical Field
The invention relates to the technical field of display, in particular to a flexible touch module, a display screen and electronic equipment.
Background
With the continuous development of electronic information products, consumer electronics continuously pursue large screens and full screens to meet the information communication requirements of man-machine exchange, and meanwhile, fingerprint identification is widely applied to the electronic information products. The traditional comprehensive screen mainly adopts the scheme that optical fingerprint identification is carried out under a local screen, and a plurality of fingerprint pictures are collected by a camera under a display screen in the optical fingerprint identification and are input into a system. When the user uses fingerprint identification, the camera collects fingerprints and then matches the fingerprints in the system, and if the fingerprints are matched, the fingerprint identification is passed. However, the camera is thick, occupies a large space, and is not suitable for a flexible folding touch screen.
Disclosure of Invention
Therefore, a flexible touch module, a display screen and an electronic device with a fingerprint identification function are needed.
A flexible touch module comprises a capacitive fingerprint identification diaphragm and a capacitive touch diaphragm which are stacked;
the capacitive fingerprint identification membrane comprises a first fingerprint layer, a second fingerprint layer and a first flexible substrate located between the first fingerprint layer and the second fingerprint layer;
the capacitive touch control membrane comprises a second flexible substrate and a first touch control layer located on one side of the second flexible substrate.
The flexible touch module has a fingerprint identification function, when a finger presses the capacitive fingerprint identification membrane, the fingerprint chip identifies whether a fingerprint identification program needs to be started or not in the current action, and if yes, the fingerprint is identified; and if not, entering a touch program. The problem of flexible touch module can not use fingerprint identification is solved.
In one embodiment, the first touch layer is located between the capacitive fingerprint identification film and the second flexible substrate. When the touch control layer is used, the first touch control layer is closer to the position pressed by a finger, so that the touch control accuracy is improved.
In one embodiment, the capacitive touch film further includes a second touch layer on the other side of the second flexible substrate. Therefore, the touch control lines can be arranged on the first touch control layer and the second touch control layer, the situation that the lines are concentrated on one touch control layer is avoided, and the touch control layer is convenient to manufacture.
In one embodiment, the thickness of the second touch layer is 80nm to 200 nm.
In one embodiment, the thicknesses of the first flexible substrate and the second flexible substrate are both 10 μm to 30 μm, and the thicknesses of the first fingerprint pattern layer, the second fingerprint pattern layer and the first touch pattern layer are all 80nm to 200 nm. The thickness of the final product can be conveniently controlled.
In one embodiment, the flexible touch module further includes a flexible circuit board for simultaneously binding the capacitive fingerprint identification diaphragm and the capacitive touch diaphragm.
In one embodiment, the capacitive fingerprint identification membrane is fixedly connected with the capacitive touch membrane through an optical cement;
the flexible touch module further comprises a flexible cover plate, and the flexible cover plate is located on one side, far away from the capacitive touch membrane, of the capacitive fingerprint identification membrane.
In one embodiment, the flexible touch module includes a touch area, a fingerprint identification area and a bending area, the fingerprint identification area is located in the touch area, and the fingerprint identification area and the bending area are at least partially overlapped.
A display screen comprises the flexible touch module.
According to the display screen adopting the technical scheme, the flexible touch module has a fingerprint identification function, when a finger presses the capacitive fingerprint identification membrane, the fingerprint chip identifies whether a fingerprint identification program needs to be started or not in the current action, and if yes, the fingerprint is identified; and if not, entering a touch program. The problem of flexible touch module can not use fingerprint identification is solved.
An electronic device comprises the display screen.
According to the electronic equipment adopting the technical scheme, the flexible touch module has a fingerprint identification function, when a finger presses the capacitive fingerprint identification film, the fingerprint chip identifies whether a fingerprint identification program needs to be started or not in the current action, and if yes, the fingerprint is identified; and if not, entering a touch program. The problem of flexible touch module can not use fingerprint identification is solved.
Drawings
Fig. 1 is a schematic longitudinal sectional view of a flexible touch module according to an embodiment of the invention;
FIG. 2 is a schematic plan view of a capacitive fingerprint identification diaphragm according to an embodiment of the present invention;
fig. 3 is a schematic plan view of a capacitive touch diaphragm according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a flexible touch module according to an embodiment of the invention;
fig. 5 is a schematic plan view of a flexible touch module according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a flexible touch module 100 according to an embodiment of the invention includes a capacitive fingerprint identification film 110 and a capacitive touch film 120 stacked together. In other words, in the flexible touch module, the fingerprint identification diaphragm and the touch diaphragm are both capacitive, so that the problem that the traditional optical fingerprint identification camera is thick is solved.
The capacitive fingerprint identification film 110 includes a first fingerprint layer 111, a second fingerprint layer 112, and a first flexible substrate 113 located between the first fingerprint layer 111 and the second fingerprint layer 112.
The first flexible substrate 113 may be a CPI (color Polymer) or COP (Cyclo olefin Polymer) flexible substrate. Of course, the material of the first flexible substrate 113 is not limited thereto, and may be other sufficiently flexible materials.
When the capacitive fingerprint identification film 110 is prepared, the first fingerprint layer 111 and the second fingerprint layer 112 may be prepared by respectively coating conductive coatings on two sides of the first flexible substrate 113, and then respectively etching fingerprint identification patterns, as shown in fig. 2. The conductive coating can be made of nano silver wires and the like.
It should be noted that after the fingerprint identification patterns are etched, gaps between the fingerprint identification patterns can be selectively filled or not filled, and the subsequent performance of the product is not affected. The fingerprint identification pattern is not limited to this embodiment.
The capacitive touch film 120 includes a second flexible substrate 121 and a first touch layer 122 disposed on one side of the second flexible substrate 121.
When the capacitive touch film 120 is prepared, a first touch layer 122 may be formed by coating a conductive coating on one surface of the second flexible substrate 121 and then etching the touch pattern, as shown in fig. 3. The conductive coating can be made of nano silver wires and the like.
It should be noted that after the touch patterns are etched, gaps between the touch patterns may be selectively filled or not filled, and subsequent performance of the product is not affected. In addition, the touch pattern is not limited to this embodiment.
On the basis of the foregoing embodiment, the first touch layer 122 is located between the capacitive fingerprint identification film 110 and the second flexible substrate 121. When the touch screen is used, the first touch layer 122 is closer to a position pressed by a finger, so that the touch accuracy is improved.
Of course, the position of the first touch layer 122 is not limited thereto, and in other embodiments, the first touch layer 122 may also be located on a side of the second flexible substrate 121 away from the capacitive fingerprint identification film 110. When a finger presses on the capacitive fingerprint identification film, the identification program can also be started, and if the finger does not press on the capacitive fingerprint identification film, the touch control program is started.
On the basis of the foregoing embodiments, the capacitive touch film 120 further includes a second touch layer 123 located on the other side of the second flexible substrate 121. Therefore, the touch lines can be arranged on the first touch layer 122 and the second touch layer 123, so that the lines are prevented from being concentrated on one touch layer, and the touch display panel is convenient to manufacture.
In addition to the foregoing embodiments, the thickness of the second touch layer 123 is 80nm to 200 nm.
On the basis of the foregoing embodiments, the thicknesses of the first flexible substrate 113 and the second flexible substrate 121 are both 10 μm to 30 μm, and the thicknesses of the first fingerprint layer 111, the second fingerprint layer 112, and the first touch layer 122 are all 80nm to 200 nm. The thickness of the final product can be conveniently controlled.
Referring to fig. 4 and 5, based on the foregoing embodiments, the flexible touch module 100 further includes a Flexible Printed Circuit (FPC)130 for simultaneously binding the capacitive fingerprint identification film 110 and the capacitive touch film 120. In this embodiment, one flexible circuit board can bind the capacitive fingerprint identification diaphragm 110 and the capacitive touch diaphragm 120 to the control board.
On the basis of the foregoing embodiments, the capacitive fingerprint identification film 110 and the capacitive touch control film 120 are fixedly connected by the optical adhesive 140, as shown in fig. 1.
On the basis of the foregoing embodiments, the flexible touch module 100 further includes a flexible cover 150, and the flexible cover 150 is located on a side of the capacitive fingerprint identification film 110 away from the capacitive touch film 120. The flexible cover 150 is fixedly connected to the capacitive fingerprint recognition diaphragm 110 by an optical adhesive 160, as shown in fig. 1.
The thickness of the flexible cover plate 150 is 50 μm to 100 μm. When the thickness of the flexible cover 150 is 50 μm to 100 μm, the capacitive fingerprint identification film 110 and the capacitive touch film 120 can be protected from being scratched, and the flexible cover is also convenient to fold.
Referring to fig. 4 and 5, based on the foregoing embodiment, the flexible touch module 100 includes a touch area 170, a fingerprint identification area 180 and a bending area 190, the fingerprint identification area 180 is located in the touch area 170, and the fingerprint identification area 180 and the bending area 190 are at least partially overlapped.
The touch area 170 refers to an area for touch control when the flexible touch module 100 is used, that is, an area where a touch pattern is formed. The fingerprint identification area 180 is an area for fingerprint identification, i.e., an area where a fingerprint identification pattern is formed, when the flexible touch module 100 is used. The bending region 190 refers to a region for bending when the flexible touch module 100 is used.
Because fingerprint identification district 180 and bending zone 190 at least part overlap, that is to say, when flexible touch-control module is buckled at the bending zone, the region that overlaps both can buckle, again can fingerprint identification, therefore solved the problem that flexible touch-control module can not use fingerprint identification. In addition, because the flexible touch module 100 can be bent, it does not need to occupy a large space, and is suitable for a flexible folding touch screen.
In this embodiment, after the flexible touch module 100 is bent at the bending area 190, a part of the fingerprint identification area 180 is located on the front side, another part of the fingerprint identification area 180 is located on the back side, and in addition, the rest part of the fingerprint identification area 180 is located on the bending side. Thus, the omnibearing fingerprint identification can be realized.
It should be noted that, in the flexible touch module of the present invention, the positions and sizes of the fingerprint identification area and the bending area are not limited to the above embodiments.
The flexible touch module has a fingerprint identification function, when a finger presses the capacitive fingerprint identification membrane, the fingerprint chip identifies whether a fingerprint identification program needs to be started or not in the current action, and if yes, the fingerprint is identified; and if not, entering a touch program. The problem of flexible touch module can not use fingerprint identification is solved.
An embodiment of a display screen includes the flexible touch module.
On the basis of the foregoing embodiment, the display screen is a full-screen.
According to the display screen adopting the technical scheme, the flexible touch module has a fingerprint identification function, when a finger presses the capacitive fingerprint identification membrane, the fingerprint chip identifies whether a fingerprint identification program needs to be started or not in the current action, and if yes, the fingerprint is identified; and if not, entering a touch program. The problem of flexible touch module can not use fingerprint identification is solved.
An electronic device of an embodiment includes the display screen.
According to the electronic equipment adopting the technical scheme, the flexible touch module has a fingerprint identification function, when a finger presses the capacitive fingerprint identification film, the fingerprint chip identifies whether a fingerprint identification program needs to be started or not in the current action, and if yes, the fingerprint is identified; and if not, entering a touch program. The problem of flexible touch module can not use fingerprint identification is solved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A flexible touch module is characterized by comprising a capacitive fingerprint identification diaphragm and a capacitive touch diaphragm which are stacked;
the capacitive fingerprint identification membrane comprises a first fingerprint layer, a second fingerprint layer and a first flexible substrate located between the first fingerprint layer and the second fingerprint layer;
the capacitive touch control membrane comprises a second flexible substrate and a first touch control layer located on one side of the second flexible substrate.
2. The flexible touch module of claim 1, wherein the first touch layer is located between the capacitive fingerprint identification film and the second flexible substrate.
3. The flexible touch module of claim 1, wherein the capacitive touch film further comprises a second touch layer on the other side of the second flexible substrate.
4. The flexible touch module according to claim 3, wherein the thickness of the second touch layer is 80nm to 200 nm.
5. The flexible touch module according to claim 1, wherein the first flexible substrate and the second flexible substrate have a thickness of 10 μm to 30 μm, and the first fingerprint layer, the second fingerprint layer and the first touch layer have a thickness of 80nm to 200 nm.
6. The flexible touch module according to claim 1, further comprising a flexible printed circuit board for simultaneously binding the capacitive fingerprint identification membrane and the capacitive touch membrane.
7. The flexible touch module according to claim 1, wherein the capacitive fingerprint identification film is fixedly connected to the capacitive touch film via an optical adhesive;
the flexible touch module further comprises a flexible cover plate, and the flexible cover plate is located on one side, far away from the capacitive touch membrane, of the capacitive fingerprint identification membrane.
8. The flexible touch module according to any one of claims 1 to 7, wherein the flexible touch module comprises a touch area, a fingerprint identification area and a bending area, the fingerprint identification area is located in the touch area, and the fingerprint identification area and the bending area are at least partially overlapped.
9. A display screen, characterized by comprising the flexible touch module of any one of claims 1-8.
10. An electronic device characterized by comprising the display screen of claim 9.
CN202010230117.4A 2020-03-27 2020-03-27 Flexible touch module, display screen and electronic equipment Pending CN111273822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010230117.4A CN111273822A (en) 2020-03-27 2020-03-27 Flexible touch module, display screen and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010230117.4A CN111273822A (en) 2020-03-27 2020-03-27 Flexible touch module, display screen and electronic equipment

Publications (1)

Publication Number Publication Date
CN111273822A true CN111273822A (en) 2020-06-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022041414A1 (en) * 2020-08-31 2022-03-03 武汉华星光电半导体显示技术有限公司 Touch screen and electronic device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022041414A1 (en) * 2020-08-31 2022-03-03 武汉华星光电半导体显示技术有限公司 Touch screen and electronic device
US11768555B2 (en) 2020-08-31 2023-09-26 Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Touch control screen and electronic device

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