CN109753108B - Portable electronic device - Google Patents
Portable electronic device Download PDFInfo
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- CN109753108B CN109753108B CN201711059568.0A CN201711059568A CN109753108B CN 109753108 B CN109753108 B CN 109753108B CN 201711059568 A CN201711059568 A CN 201711059568A CN 109753108 B CN109753108 B CN 109753108B
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Abstract
The invention provides a portable electronic device, comprising: a first housing including a first display module; the second shell comprises a second display module and is combined with the first shell; the second display module comprises a micro light-emitting diode display and an optical fingerprint sensing unit, wherein the optical fingerprint sensing unit is arranged below the micro light-emitting diode display. The portable electronic device provided by the invention can prevent moisture or dust from entering the portable electronic device from the arrangement position of the optical fingerprint sensing unit, and can also maintain the aesthetic feeling of the consistency of the appearance of the portable electronic device.
Description
Technical Field
The present disclosure relates to electronic devices, and particularly to a portable electronic device.
Background
Fingerprint identification modules are becoming one of the standard equipment of portable electronic devices, and users can identify their identities through the fingerprint identification modules to unlock the portable electronic devices or to operate application programs.
The detection mode of the fingerprint identification module can be divided into: capacitive fingerprint sensing technology and optical fingerprint sensing technology. The optical fingerprint sensing unit is used for acquiring light reflected from the surface of a finger, so as to scan the difference between brightness of a fingerprint peak and brightness of a fingerprint valley on the surface of the finger, and further obtain the line details of the fingerprint of the finger. Compared with the expensive capacitive sensing chip in the capacitive fingerprint sensing unit, the optical sensing chip in the optical fingerprint sensing unit is lower in cost and more durable.
In the prior art, if the portable electronic device uses the capacitive fingerprint sensing technology, the capacitive sensing unit is usually disposed below the physical key; if the optical fingerprint sensing technology is used, a transparent window frame or an opening is usually disposed on the surface of the portable electronic device, and the optical fingerprint sensing unit is disposed below the transparent window frame or at the position of the opening. However, the transparent window frame or the opening is provided only for fingerprint recognition and has no other additional function. On the other hand, the transparent window frame or the opening may affect the aesthetic sense of the design uniformity of the portable electronic device. In addition, if the structure of the transparent window frame or the position of the opening is not sealed completely, moisture or dust may enter the portable electronic device from the position of the edge or the opening of the transparent window frame and the portable electronic device, which may cause short circuit of the optical fingerprint sensing unit or other electronic components, or damage or malfunction of the portable electronic device.
In view of this, the technical issue to be solved by the present invention is how to prevent moisture or dust from entering the portable electronic device from the installation position of the optical fingerprint sensing unit, and the installation of the optical fingerprint sensing unit does not affect the aesthetic feeling of the appearance consistency of the portable electronic device.
Disclosure of Invention
The present invention is directed to a portable electronic device with dual display modules and an optical fingerprint recognition function, which can prevent moisture or dust from entering the portable electronic device from the installation position of an optical fingerprint sensing unit, and can maintain the aesthetic sense of consistency of the appearance of the portable electronic device.
To achieve the aforesaid objective, the present invention provides a portable electronic device, comprising:
a first housing including a first display module; and
the second shell comprises a second display module and is combined with the first shell;
the second display module comprises a micro light-emitting diode display and an optical fingerprint sensing unit, wherein the optical fingerprint sensing unit is arranged below the micro light-emitting diode display.
In the above preferred embodiment, the optical fingerprint sensing unit includes: the CMOS chip is fixed on the surface of the flexible printed circuit board.
In the above preferred embodiment, the micro light emitting diode display includes: the finger-touch display panel comprises a first transparent substrate for finger contact, a second transparent substrate and a plurality of micro light-emitting diode chips arranged between the first transparent substrate and the second transparent substrate, wherein gaps are arranged among the micro light-emitting diode chips.
In the above preferred embodiment, the micro led chip has a first electrode and a second electrode, and the micro led chip is electrically connected to the first transparent substrate through the first electrode and electrically connected to the second transparent substrate through the second electrode.
In the above preferred embodiment, the anti-glare film layer is disposed on the first transparent substrate and is used for being touched by a finger.
In the above preferred embodiment, the micro light emitting diode chip includes: red light emitting diode chip, green light emitting diode chip, blue light emitting diode chip and infrared light emitting diode chip.
In the above preferred embodiment, the second display module further includes a light guide layer, and the light guide layer is formed between the second transparent substrate and the optical fingerprint sensing unit.
In the above preferred embodiments, the light guide layer has a plurality of light guide microstructures.
In the above preferred embodiment, the infrared light emitting diode chip is used for emitting light to a finger, and the finger reflects the light and sequentially passes through the gap between the first transparent substrate and the micro light emitting diode chip, the second transparent substrate and the light guide layer to be transmitted to the optical fingerprint sensing unit.
In the above preferred embodiment, the first transparent substrate is made of: sapphire crystal glass, tempered glass or plastic.
In the above preferred embodiment, the second transparent substrate is made of: sapphire crystal glass, tempered glass, or plastic.
In the above preferred embodiment, the first housing further includes a first lens module and a key.
In the above preferred embodiments, the second housing further includes a second lens module.
In the above preferred embodiment, the second casing is made of: sapphire crystal glass, tempered glass or plastic.
In the above preferred embodiment, the portable electronic device is: a personal digital assistant or a smartphone.
Drawings
FIG. 1 is a side view of a portable electronic device provided in accordance with the present invention;
FIG. 2 is a front view of a portable electronic device provided by the present invention;
FIG. 3 is a rear view of a portable electronic device provided in accordance with the present invention; and
fig. 4 is a cross-sectional view of a second display module provided in the present invention.
Description of the reference numerals:
c wave crest
E1 A first electrode
E2 Second electrode
G gap
L ray
T trough
10. Portable electronic device
11. First shell
12. Second shell
13. First display module
131. A first user interface
14. Push-button
15. First lens module
16. Second display module
161. Micro light emitting diode display
1611. Micro light emitting diode chip
1611R red light LED chip
1611G green light LED chip
1611B blue light LED chip
1611IR infrared LED chip
1612. A first transparent substrate
1613. A second transparent substrate
162. Anti-dazzle film layer
163. Light guide layer
1631. Light guide microstructure
164. Optical fingerprint sensing unit
1641. Complementary metal oxide semiconductor chip
1642. Flexible printed circuit board
165. Second user interface
1651. Fingerprint identification area
17. Second lens module
90. Finger(s)
Detailed Description
The advantages and features of the invention and methods of accomplishing the same may be understood more readily by reference to the following detailed description of exemplary embodiments and the accompanying drawings. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
First, referring to fig. 1, fig. 1 is a side view of a portable electronic device provided by the present invention. In fig. 1, the portable electronic device 10 includes: a first housing 11 and a second housing 12 combined with the first housing 11, wherein the first housing 11 has a first display module 13, a key 14 and a first lens module 15; the second housing 12 has a second display module 13 and a second lens module 17. Among them, the portable electronic device 10 may be: a Personal Digital Assistant (PDA) or a smartphone (smartphone).
Next, referring to fig. 2, fig. 2 is a front view of the portable electronic device provided by the present invention. In fig. 2, the first lens module 15 is disposed above the first display module 13, and the key 14 is disposed below the first display module 13. The first Display module 13 may be a Liquid Crystal Display (LCD), a Light-Emitting Diode (LED) Display or a Field Emission Display (FED) having a touch function, and the touch function may be: resistive touch, capacitive touch, sonic touch, optical touch, or electromagnetic touch.
Referring to fig. 2, the first display module 13 is used to display the first user interface 131, and the first user interface 131 can display: signal strength of wireless communication, time, bluetooth indication, battery status, graphical representation of applications (icon), mail status, caller id or missed call, etc. The user can operate the application program, set the system status of the portable electronic device 10, open/reply an email or make a call by touching the first display module 13, or control the first lens module 15 or the second lens module 17 to obtain an image by touching the first display module 13 or the operation key 14.
Referring to fig. 3, fig. 3 is a back view of a portable electronic device according to the present invention. In fig. 3, the second housing 12 includes a second display module 16 with fingerprint identification function and a second lens module 17 disposed above the second display module 16. In the present embodiment, the second casing 12 is made of transparent materials such as sapphire crystal glass, tempered glass, or plastic. In the prior art, the metal casing easily causes a shielding effect to the wireless signal, and then disturbs as: wireless charging, transmission of wireless signals such as bluetooth, wiFi, zigBee, 4G or 5G. Compared with the metal casing, the second casing 12 made of transparent materials such as sapphire crystal glass, tempered glass or plastic can effectively reduce the occurrence of shielding effect, thereby improving the strength of wireless signal transmission. In addition, in order to reduce the shielding effect of the metal casing on the wireless signal, in the prior art, the wireless transmission antenna is usually disposed on the surface of the metal casing to form a segmented structure separated by the wireless transmission antenna, so that the metal casing loses the original consistent metal texture. Compared with the sectional structure of the metal casing, the second casing 12 made of transparent materials such as sapphire crystal glass, tempered glass or plastic is an integrally formed structure with an arc-shaped edge, so that the second casing 12 can better conform to the ergonomics of palm holding by the design of the arc-shaped edge in addition to maintaining the aesthetic feeling of the appearance consistency of the second casing 12, and the comfort level of the palm holding the portable electronic device 10 is further improved. On the other hand, the second display module 16 is used for displaying the second user interface 165, and the second user interface 165 can also display: signal strength of wireless communication, time, bluetooth indication, battery status, graphical representation of applications, mail status, incoming call display or missed call, etc. (not shown in the figure). When the second display module 16 is used for fingerprint recognition, a fingerprint recognition area 1651 can be displayed in the second user interface 165, so that the user can place a finger at the position of the fingerprint recognition area 1651 for fingerprint recognition. The fingerprint identification may be used to identify or identify the user to unlock the portable electronic device 10 or may be used to operate an application.
Referring to fig. 4, fig. 4 is a cross-sectional view of a second display module provided in the present invention. In fig. 4, the second display module 16 includes: a micro light emitting diode (micro LED) display 161, an antiglare film layer 162, a light guide layer 163, and an optical fingerprint sensing means 164. In the present embodiment, the optical fingerprint sensing unit 164 is disposed under the micro led display 161. The optical fingerprint sensing unit 164 includes: a Complementary Metal-Oxide-Semiconductor (CMOS) chip 1641 and a Flexible Printed Circuit Board (FPCB) 1642 are used as the photosensitive element, wherein the CMOS chip 1641 may be fixed on a Surface of the FPCB 1642 by a Surface Mount Technology (SMT).
Referring to fig. 4, in the present embodiment, the micro led display 161 includes: a first transparent substrate 1612, a second transparent substrate 1613, and a plurality of micro led chips 1611 disposed between the first transparent substrate 1612 and the second transparent substrate 1613. The first transparent substrate 1612 and the second transparent substrate 1613 may be made of: sapphire crystal glass, tempered glass or plastic, and the first transparent substrate 1612 and the second casing 12 are made of the same material, so that the second display module 16 can maintain the aesthetic sense of the appearance consistency of the second casing 12. The micro led chip 1611 includes: red light emitting diode chip 1611R, green light emitting diode chip 1611G, blue light emitting diode chip 1611B, and infrared light emitting diode chip 1611IR, and a gap G is provided between each micro light emitting diode chip 1611.
The micro led chip 1611 can be electrically connected to the thin film transistor (not shown) or the signal electrode (not shown) disposed on the surface of the first transparent substrate 1612 through the first electrode E1, and electrically connected to the thin film transistor (not shown) or the signal electrode (not shown) disposed on the surface of the second transparent substrate 1613 through the second electrode E2, so that the red led chip 1611R, the green led chip 1611G and the blue led chip 1611B of the micro led chip 1611 can be used as the pixel/sub-pixel unit of the second display module 16, so that the second display module 16 can perform active color image display or gray scale image display.
The light guide layer 163 is disposed between the second transparent substrate 1613 and the optical fingerprint sensing unit 164. In the embodiment, the light guide layer 163 may be adhered to the second transparent substrate 1613 and the Optical fingerprint sensing unit 164 by using an Optical Clear Adhesive (OCA) (not shown), and the light guide layer 163 has a plurality of light guide microstructures 1631. The light guide microstructure 1631 has a micro-pinhole structure (not shown) or a collimating lens structure (not shown) fabricated by screen printing, and the light guide microstructure 1631 is used for converging light and adjusting the traveling direction of the light. Although the present invention only proposes the embodiment of disposing the light guiding layer 163 between the second transparent substrate 1613 and the optical fingerprint sensing unit 164, in practical applications, the light guiding microstructures may be directly formed on the surface or inside of the second transparent substrate 1613, and the present invention is not limited to the embodiment presented in the present invention.
When the finger 90 touches the second display module 16 for fingerprint recognition, first, the infrared led chip 1611IR of the micro led display 161 emits light L that cannot be perceived by human eyes to the finger 90. Then, because the fingerprint on the surface of the finger 90 has a plurality of peaks (creet) C and valleys (trough) T, when the light L irradiates the valleys T, the light L is scattered by the valleys T or absorbed by the finger 90; when the light L irradiates the peak C, the light L is reflected by the peak C. Then, the light L reflected by the wave peak C passes through the gap G between the first transparent substrate 1612 and the micro led chip 1611, the second transparent substrate 1613 and the light guiding layer 163 in sequence, and is transmitted to the optical fingerprint sensing unit 164. When the light L passes through the light guide layer 163, a pinhole image is formed through a micro pinhole structure (not shown) in the light guide microstructures 1631 and projected onto the cmos chip 1641 of the optical fingerprint sensing unit 164, so that the optical fingerprint sensing unit 164 can identify the user's identity according to the received grayscale digital images of the peaks C and the valleys T of the fingerprint of the finger 90.
When the light L reflected by the wave peak C passes through the light guide layer 163, the traveling direction of the light L can be adjusted by the light guide microstructures 1631, and the light L is converged by the light condensing characteristic of the light guide layer 163, so that the intensity of the optical signal received by the optical fingerprint sensing unit 164 can be effectively improved, and the recognition rate of the optical fingerprint sensing unit 164 on the gray-scale digital image of the fingerprint can be further improved.
Compared with the prior art, the optical fingerprint sensing unit is arranged below the second display module, and a transparent window frame or an opening for fingerprint identification is not required to be additionally arranged, so that the probability of moisture or dust entering the portable electronic device from the arrangement position of the optical fingerprint sensing unit can be effectively reduced, and the aesthetic feeling of the consistency of the appearance of the portable electronic device can be maintained because the material of the micro light-emitting diode display in the second display module and the material of the second shell are the same. In addition, because the second display module has the function of active image display, a user can know the running state or other information of the portable electronic device from the second display module under the state that the first display module is not started, so that the power consumption of the portable electronic device can be effectively reduced, and the running time of the portable electronic device is further prolonged. On the other hand, the second display module can also be used for fingerprint identification to confirm or identify the identity of the user, and thereby the locking state of the portable electronic device is released, or the second display module is used for operating an application program. The portable electronic device with the optical fingerprint sensing unit provided by the invention not only has preferable functionality, but also can effectively prevent moisture or dust from entering in the arrangement mode of the optical fingerprint sensing unit, and can maintain the aesthetic feeling of the consistency of the appearance of the portable electronic device; therefore, the present invention is an invention with great industrial value.
The invention is capable of modifications in various respects apparent to those skilled in the art, all without departing from the scope of the appended claims.
Claims (12)
1. A portable electronic device, comprising:
a first housing including a first display module; and
the second shell comprises a second display module and is combined with the first shell;
wherein, the second display module includes a micro-LED display and an optical fingerprint sensing unit, the optical fingerprint sensing unit is disposed under the micro-LED display, the micro-LED display includes: a first transparent substrate for a finger to contact, a second transparent substrate, and multiple micro-LED chips arranged between the first and second substrates, wherein a gap is formed between the micro-LED chips,
the second display module further comprises a light guide layer formed between the second transparent substrate and the optical fingerprint sensing unit, the light guide layer is provided with a plurality of light guide microstructures, and each light guide microstructure is provided with a micro-pinhole structure or a light collimating lens structure and used for converging light rays and adjusting the traveling direction of the light rays.
2. The portable electronic device of claim 1, wherein the optical fingerprint sensing unit comprises: the CMOS chip is fixed on the surface of the flexible printed circuit board.
3. The portable electronic device as claimed in claim 1, wherein the micro-led chip has a first electrode and a second electrode, and the micro-led chip is electrically connected to the first transparent substrate through the first electrode and electrically connected to the second transparent substrate through the second electrode.
4. The portable electronic device as claimed in claim 1, wherein an anti-glare film is disposed on the first transparent substrate for the finger to touch.
5. The portable electronic device of claim 1, wherein the micro light emitting diode chip comprises: a red LED chip, a green LED chip, a blue LED chip and an infrared LED chip.
6. The portable electronic device of claim 5, wherein the infrared light emitting diode chip is configured to emit a light that is not perceived by human eyes to the finger, and the finger reflects the light and passes through the first transparent substrate, the gap between the micro light emitting diode chips, the second transparent substrate and the light guiding layer in sequence to be transmitted to the optical fingerprint sensing unit.
7. The portable electronic device as claimed in claim 1, wherein the first transparent substrate is made of: sapphire crystal glass, tempered glass or plastic.
8. The portable electronic device as claimed in claim 1, wherein the second transparent substrate is made of: sapphire crystal glass, tempered glass or plastic.
9. The portable electronic device as claimed in claim 1, wherein the first housing further comprises a first lens module and a button.
10. The portable electronic device of claim 1, wherein the second housing further comprises a second lens module.
11. The portable electronic device as claimed in claim 1, wherein the second housing is made of: sapphire crystal glass, tempered glass or plastic.
12. The portable electronic device of claim 1, wherein the portable electronic device is: a personal digital assistant or a smartphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711059568.0A CN109753108B (en) | 2017-11-01 | 2017-11-01 | Portable electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711059568.0A CN109753108B (en) | 2017-11-01 | 2017-11-01 | Portable electronic device |
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| CN109753108A CN109753108A (en) | 2019-05-14 |
| CN109753108B true CN109753108B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711059568.0A Active CN109753108B (en) | 2017-11-01 | 2017-11-01 | Portable electronic device |
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| CN101281589A (en) * | 2007-04-04 | 2008-10-08 | 鸿富锦精密工业（深圳）有限公司 | Fingerprint identification apparatus and portable electronic device |
| CN102609115A (en) * | 2012-01-17 | 2012-07-25 | 埃派克森微电子(上海)股份有限公司 | Portable electronic device |
| CN103455810A (en) * | 2013-08-30 | 2013-12-18 | 格科微电子（上海）有限公司 | Optical fingerprint collection device, portable electronic device and optical fingerprint collection method |
| CN104252270A (en) * | 2010-06-25 | 2014-12-31 | 林卓毅 | Electronic equipment |
| CN107111763A (en) * | 2017-03-27 | 2017-08-29 | 深圳市汇顶科技股份有限公司 | The reminding method and electronic equipment of fingerprinting operation |
| CN107302010A (en) * | 2017-06-21 | 2017-10-27 | 上海天马微电子有限公司 | A kind of display panel and display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010094499A (en) * | 2008-09-16 | 2010-04-30 | Hitachi Maxell Ltd | Image acquisition apparatus and biometric information acquisition apparatus |
| KR102491287B1 (en) * | 2016-01-14 | 2023-01-25 | 삼성전자주식회사 | Electronic device |
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2017
- 2017-11-01 CN CN201711059568.0A patent/CN109753108B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281589A (en) * | 2007-04-04 | 2008-10-08 | 鸿富锦精密工业（深圳）有限公司 | Fingerprint identification apparatus and portable electronic device |
| CN104252270A (en) * | 2010-06-25 | 2014-12-31 | 林卓毅 | Electronic equipment |
| CN102609115A (en) * | 2012-01-17 | 2012-07-25 | 埃派克森微电子(上海)股份有限公司 | Portable electronic device |
| CN103455810A (en) * | 2013-08-30 | 2013-12-18 | 格科微电子（上海）有限公司 | Optical fingerprint collection device, portable electronic device and optical fingerprint collection method |
| CN107111763A (en) * | 2017-03-27 | 2017-08-29 | 深圳市汇顶科技股份有限公司 | The reminding method and electronic equipment of fingerprinting operation |
| CN107302010A (en) * | 2017-06-21 | 2017-10-27 | 上海天马微电子有限公司 | A kind of display panel and display device |
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