TW201738869A - Electronic paper display apparatus - Google Patents

Abstract

An electronic paper display apparatus includes an electronic paper display unit, a control unit, a storage unit, a wireless communication module, an auxiliary power-storing circuit. The control unit is electrically connected to the electronic paper display unit and comprises a power-level detection circuit. The storage unit stores at least an identification-alerting information and is electrically connected to the control unit. The wireless communication module is electrically connected to the control unit and comprises a satellite positioning system receiver which receives a satellite positioning signal of the current position of the electronic paper display apparatus. The auxiliary power-storing circuit is electrically connected to the power-level detection circuit, the satellite positioning system receiver and the electronic paper display unit. When the power-level detection circuit detects activation of the auxiliary power-storing circuit to provide electric power, the control unit controls that the identification-alerting information stored in the storage unit and a satellite positioning system information generated according to the satellite positioning signal are transferred and shown in the electronic paper display unit.

Description

Electronic paper display device

The present invention relates to an electronic paper display device, and more particularly to an electronic paper display device capable of displaying identification warning information and satellite positioning information or transmitting a satellite positioning signal when power is interrupted.

Electronic Paper has the visual impression of printing and writing on paper, and its power consumption is extremely small. The general flat panel display of the electronic paper different from the LCD needs to be illuminated by the backlight module or the self-illuminating source to achieve the display function, that is, the display function is not required for the backlight module or the self-illuminating source. E-paper, like plain paper, relies on ambient light, so it is more comfortable to read, and its image is still clearly visible in the sun. In addition, the viewing angle is extremely wide, and its contrast is much higher than other display technologies. , roughly the same as the newspaper printing effect. Therefore, many manufacturers have invested in the development of electronic paper display devices, and electronic paper can also be applied to electronic labels, bus schedules, electronic bulletin boards, mobile phone screens, e-book readers, or wearable electronic devices.

As the application of electronic paper has become more and more widespread, in recent years, it has been applied more recently to electronic paper display devices such as wearable devices or portable electronic devices. Since these products are lighter, thinner and shorter, they are easy to lose and difficult to retrieve, so it is easy. Cause the user's economic loss, personal data or confidential information leakage.

In view of this, how to provide an electronic paper display device having an electronic paper display function and being easily retrieved when lost is an important subject.

The invention provides an electronic paper display device capable of displaying identification warning information and satellite positioning information or transmitting a satellite positioning signal when power is interrupted, which can be conveniently retrieved by the user when lost.

To achieve the above objective, the present invention provides an electronic paper display device including an electronic paper display unit, a control unit, a storage unit, a wireless communication module, and a pair of power storage circuits. The control unit is electrically connected to the electronic paper display unit and further includes a power detection circuit. The storage unit stores at least one identification warning information and is electrically connected to the control unit. The wireless communication module is electrically connected to the control unit and includes a satellite positioning receiving unit, and the satellite positioning receiving unit receives a current satellite positioning signal of the electronic paper display device. The auxiliary power storage circuit is electrically connected to the power detecting circuit, the satellite positioning receiving unit and the electronic paper display unit of the control unit. Wherein, when the power detecting circuit detects that the auxiliary power storage circuit is started to supply power, the control unit loads the identification warning information of the storage unit and the satellite positioning information generated by the satellite positioning signal into the electronic paper display unit.

In an embodiment, the electronic paper display device is a smart phone, a tablet, an e-book, a notebook computer, or a wearable electronic device.

In an embodiment, the wireless communication module further includes a wireless transmission unit, and the wireless transmission unit is electrically connected to the control unit. When the secondary power storage circuit is activated, the wireless transmission unit sends a satellite positioning signal at a location of the electronic paper display device. .

In an embodiment, when the power of the secondary power storage circuit is exhausted, the electronic paper display unit continuously displays the identification warning information and the satellite positioning information.

In an embodiment, the control unit controls the storage unit to continuously record satellite positioning information of the electronic paper display device.

In one embodiment, the amount of power supplied by the secondary power storage circuit is the amount of power required for the electronic paper display unit to update the display of the power required for one display, and/or at least one time for transmitting the satellite positioning signal at the location of the electronic paper display device.

In an embodiment, the electronic paper display device further includes a main power unit electrically connected to the power detecting circuit of the control unit. And when the power detection loop detects that the power of the main power unit rises to a preset power threshold, the control unit controls the wireless transmission unit to transmit a satellite positioning signal at a location of the electronic paper display device at a fixed time interval.

In an embodiment, the electronic paper display device further includes an authentication unit, and the authentication unit is at least electrically connected to the control unit, and receives the authentication identification information. After the authentication and identification information is authenticated by the authentication unit, the electronic paper display unit is updated accordingly. Display information.

In an embodiment, after the authentication identification information is authenticated by the authentication unit, the wireless transmission unit stops transmitting the satellite positioning signal at the location of the electronic paper display device.

In an embodiment, the authentication identification information is password authentication information or biometric information.

In an embodiment, the secondary power storage circuit is activated when the primary power unit is depleted or interrupted.

In summary, the electronic paper display device of the present invention can display the identification warning information and the satellite positioning information or transmit a satellite positioning signal when the power is interrupted, that is, when the power detecting circuit detects that the secondary power storage circuit is started to be supplied. In the case of electric power, the control unit loads the identification warning information of the storage unit and the satellite positioning information into the electronic paper display unit. Thereby, even if the electronic paper display device is lost, the loaded identification warning information and the satellite positioning data are automatically displayed on the electronic paper display unit when the main power is exhausted or interrupted. In this way, the person who has reached the electronic paper display device can conveniently contact the owner and return it.

In addition, when the electronic paper display device is provided with the authentication unit, the control unit cannot update the electronic paper display unit to display the display information before the authentication unit is authenticated; therefore, the information displayed on the electronic paper display unit cannot be displayed at this time. Being overwritten by others. Thereby, even after the electronic paper display device is lost, the security of the electronic paper display device can be maintained, thereby increasing the probability of return.

1, 2‧‧‧electronic paper display device

10, 20‧‧‧ ontology

101‧‧‧First housing

102‧‧‧ second housing

11‧‧‧Backlit display unit

11'‧‧‧Self-illuminated display unit

13, 23‧‧‧ Electronic paper display unit

131, 231‧‧‧ Identify warning information

132, 232‧‧‧ Satellite Positioning Information

14‧‧‧Control unit

141‧‧‧Power detection circuit

15‧‧‧Main Power Unit (P1)

16‧‧‧Wireless communication module

161‧‧‧Wireless transmission unit

162‧‧‧Satellite positioning receiving unit

17‧‧‧ storage unit

18‧‧‧Sub power storage circuit (P2)

19‧‧‧Authorization unit

C‧‧‧Electronic device

TH1‧‧‧ (preset) first power threshold

TH2‧‧‧ (preset) second power threshold

M1‧‧‧ first mode

M2‧‧‧ second mode

M3‧‧‧ third mode

M4‧‧‧ fourth mode

1A is a schematic diagram of an electronic paper display device in accordance with a preferred embodiment of the present invention.

FIG. 1B is a schematic view of the back side of the electronic paper display device of FIG. 1A.

2 is a system diagram of the electronic paper display device of FIG. 1A.

3 is a schematic diagram showing power versus time of a main power unit (P1) and a sub power storage circuit (P2) of the electronic paper display device of FIG. 1A.

4A is a schematic diagram of the electronic paper display device of FIG. 1B displaying information and transmitting signals in the first mode.

4B is a schematic diagram of the electronic paper display device of FIG. 1B displaying information in the second mode.

4C is a schematic diagram of the electronic paper display device of FIG. 1B displaying information and transmitting signals in the third mode.

4D is a schematic diagram of the electronic paper display device of FIG. 1B displaying information and transmitting signals in the third mode.

FIG. 5 is a schematic diagram of another electronic paper display device according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic paper display device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals.

1A to 2, FIG. 1A is a schematic diagram of an electronic paper display device according to a preferred embodiment of the present invention. FIG. 1B is a schematic view of the back side of the electronic paper display device of FIG. 1A. 2 is a system diagram of the electronic paper display device of FIG. 1A. The electronic paper display device 1 can be a portable electronic device (such as a smart phone, a tablet computer, an e-book, a notebook computer) or a wearable electronic device (such as an identity recognition card). In the present embodiment, the following description is made by taking the electronic paper display device 1 as a smart phone as an example.

The electronic paper display device 1 provided in this embodiment includes a main body 10, a backlight display unit 11, an electronic paper display unit 13, a control unit 14, a main power unit 15, a wireless communication module 16, a storage unit 17, and a secondary power storage. Loop 18 and authentication unit 19. The control unit 14 further includes a power detecting circuit 141. The body 10 includes a first housing 101 and a second housing 102, and the first housing 101 and the second housing 102 are oppositely disposed and collectively form an accommodating space. The backlight display unit 11 is disposed on the first housing 101, and the electronic paper display unit 13 is disposed on the second housing 102 relative to the first housing 101. In this embodiment, the backlight display unit 11 refers to a display unit including a backlight module, such as a liquid crystal (LCD) display unit. Further, in another embodiment, the backlight display unit 11 may also be replaced by a self-luminous display unit (e.g., an organic light emitting diode display unit) 11'. For convenience of description, in the following embodiment, the side of the electronic paper display device 1 in which the backlight display unit 11 is disposed is referred to as "front side", and the side on which the electronic paper display unit 13 is disposed is referred to as "back side". In addition, in other embodiments (eg, an e-book, a wearable electronic device, or an identity recognition card, etc.), the electronic paper display device 1 may not be provided with the backlight display unit 11, but only the electronic paper display unit 13 is provided, and the present invention also There are no restrictions on this.

In this embodiment, the electronic paper display unit 13 refers to a display unit that utilizes a bistable display technology, that is, the display unit can maintain the same display without applying a voltage, and only needs to replace the screen display information. When it is necessary to supply voltage. Therefore, its power consumption is low, and only a relatively low power is required to display the specified information. In the embodiment, the electronic paper display unit 13 may employ a display technology such as electrophoresis (for example, microcapsule electrophoresis or microcup electrophoresis), electronic powder fluid, cholesteric liquid crystal, bistable nematic liquid crystal, or electrowetting.

The wireless communication module 16 includes a wireless transmission unit 161 and a satellite positioning receiving unit 162. In other embodiments, the wireless communication module 16, the storage unit 17, and/or the authentication unit 19 may also be integrated into the control unit 14 respectively or together, and the invention is not limited thereto.

In addition, the control unit 14, the main power unit 15, the wireless communication module 16, the storage unit 17, the secondary power storage circuit 18, and the authentication unit 19 may be disposed on a circuit board (not shown), and the circuit board is disposed on The first housing 101 and the second housing 102 are formed together in an accommodation space. The main power unit 15 is at least electrically connected to the power detecting circuit 141 of the control unit 14. The wireless transmission unit 161 and the satellite positioning receiving unit 162, the backlight display unit 11, the electronic paper display unit 13, the storage unit 17, and the authentication unit 19 of the wireless communication module 16 are electrically connected to the control unit 14, respectively.

The secondary power storage circuit 18 is electrically connected to the power detection circuit 141 of the control unit 14 , the wireless communication module 16 (including the wireless transmission unit 161 and the satellite positioning receiving unit 162 ), the storage unit 17 and the electronic paper display unit 13 . When the power of the main power unit is exhausted or interrupted, it is activated to supply the backup power of the electronic paper display device 1 to perform the following operations in this embodiment. The auxiliary power storage circuit 18 can be an energy storage component such as a super capacitor, an electrolytic capacitor, a ceramic capacitor, or an inductor, or a storage circuit composed of a plurality of electronic components, which is not limited in the present invention.

The control unit 14 includes at least a central processor or a microcontroller (Micro Controller), and the power detection circuit 141 can also be a power management IC for detecting the main power unit 15 . The power is supplied and the power of the main power unit 15 is adjusted to other components.

The satellite positioning receiving unit 162 receives the current satellite positioning signal of the electronic paper display device 1 (for example, a signal transmitted by a synchronous satellite of the global satellite positioning system), and the electronic paper is received. The current satellite positioning signal of display device 1 is provided to control unit 14. The control unit 14 can calculate the satellite positioning information 132 of the current physical position (ie, the location, such as the latitude and longitude) of the electronic paper display device 1 according to the satellite positioning signal, and the satellite positioning information 132 is carried out according to the following control manner. The electronic paper display unit 13 is configured to cause the electronic paper display unit 13 to display the satellite positioning information 132 corresponding to the satellite positioning signal received by the satellite positioning receiving unit 162 (as shown in FIGS. 4A to 4D). In addition, after the control unit 14 calculates the satellite positioning information 132 of the current physical position of the electronic paper display device 1 according to the satellite positioning signal received by the satellite positioning receiving unit 162, the information does not have to be directly loaded into the electronic paper display unit. 13. The control unit 14 may also first store the satellite positioning information 132 in the storage unit 17, and then the control unit 14 controls the satellite positioning information 132 to be loaded into the electronic paper display unit 13 according to the following control method. In addition, the control unit 14 can also control the storage unit 17 to continuously record the satellite positioning information corresponding to the satellite positioning signal received by the satellite positioning receiving unit 162. That is, the control unit 14 controls the storage unit 17 to continuously record the movement trajectory of the electronic paper display device 1.

In this embodiment, the "satellite positioning signal" refers to a satellite signal transmitted from a geosynchronous satellite of the global positioning system, or a physical position issued by the wireless transmission unit to represent the current location of the electronic paper display device 1 or has occurred. (for example, latitude and longitude) information signal. The "satellite positioning information" in this embodiment means that the control unit 14 calculates information representing the current location of the electronic paper display device 1 or the physical position (for example, latitude and longitude) that has occurred since the "satellite positioning signal".

The storage unit 17 stores at least the identification warning information 131 and/or the satellite positioning information 132 (as shown in FIGS. 4A to 4D). The identification warning information 131 may be prompt or warning information (such as a prompt or warning slogan), basic personnel information (such as a contact telephone number, address or name), and/or identification information of the electronic paper display device 1 (eg, product identification code, date of manufacture) , warranty date, or repair delivery, etc.). The identification warning information 131 can also be input by the user, and is not limited in the present invention. The storage unit 17 is also used to store other display information (for example, e-book information, picture information, etc.). The control unit 14 can load the identification warning information 131 and other display information in the storage unit 17 into the electronic paper display unit 13. The wireless transmission unit 161 is used to transmit signals loaded from the control unit 14.

In this embodiment, when the electronic paper display device 1 is in the power detecting circuit 141 When the secondary power storage circuit 18 is detected to be powered, that is, the secondary power storage circuit 18 supplies power to the control unit 14, the electronic paper display unit 13 and the wireless transmission unit 161 of the wireless communication module 16 and the satellite positioning. The receiving unit 162 automatically loads the satellite positioning information 132 and the identification warning information 131 in the storage unit 17 into the electronic paper display unit 13 to display the identification warning information 131 and the satellite positioning information 132.

In the present embodiment, the secondary power storage circuit 18 is activated when the main power unit 15 is exhausted or interrupted, including but not limited to the following: when the power of the main power unit 15 is exhausted, when the main power unit 15 When the electrical connection with the electronic paper display unit 13 or the control unit 14 is turned off, or when the electronic paper display device 1 is turned off.

In addition, when the control unit 14 loads the satellite positioning information 132 and the identification warning information 131 into the electronic paper display unit 13 and the power of the auxiliary power storage circuit 18 is exhausted, the electronic paper display unit 13 continuously displays the identification warning information 131 and Satellite positioning information 132. Further, in order to further enhance the security, the electronic paper display device 1 can be designed such that the information displayed on the electronic paper display unit 13 cannot be overwritten and changed before the authentication is passed, and the authentication related technology and the operation mode will be as follows. Explain together.

Referring to FIG. 3 to FIG. 4C, three preferred modes of operation of the electronic paper display device 1 will be described below. FIG. 3 is a schematic diagram of power versus time of the main power unit 15 of the electronic paper display device 1 of FIG. 1A. 4A is a schematic diagram of the electronic paper display device of FIG. 1B displaying information and transmitting signals in the first mode. 4B is a schematic diagram of the electronic paper display device of FIG. 1B displaying information in the second mode. 4C is a schematic diagram of the electronic paper display device of FIG. 1B displaying information and transmitting signals in the third mode. 4D is a schematic diagram of the electronic paper display device of FIG. 1B displaying information and transmitting signals in the fourth mode.

As shown in FIGS. 3 to 4D, in the present embodiment, when the main power unit 15 (P1) stops supplying power to the control unit 14 (for example, when the power of the main power unit 15 (P1) is exhausted or pulled out) At this time, the power is suddenly interrupted, and then switched to the wireless transmission unit 161 and the satellite positioning receiving unit 162 which are supplied with power from the secondary power storage circuit 18 (P2) to the control unit 14, the electronic paper display unit 13, and the wireless communication module 16, The electronic paper display device 1 enters the first mode M1, and the satellite positioning information 132 generated by the satellite positioning signal and/or the identification warning information 131 in the storage unit 17 is loaded into the electronic paper display unit 13 by the control unit 14 so that the electronic paper display device 1 enters the first mode M1. Display identification alert Information 131 and satellite positioning information 132. That is, in the first mode M1, the electronic paper display unit 13 displays the identification warning information 131 and/or the satellite positioning information 132. The display position of the identification information 131 and the satellite positioning information 132 on the electronic paper display unit 13 can be adjusted according to actual needs, and the invention is not limited.

In addition, in the present embodiment, the amount of power stored or available by the secondary power storage circuit 18 (P2) is the amount of power or power required for the electronic paper display unit 13 to update the display once. The maximum storage capacity of the secondary power storage circuit 18 (P2) can be adjusted according to actual needs, which is not limited in the present invention. The stored or available power of the secondary power storage circuit 18 (P2) may be 3%, 10%, 15%, or 20% of the total power or maximum stored power of the primary power unit 15 (P1).

In addition, in the first mode M1, the control unit 14 can load the identification warning information 131 of the electronic paper display device 1 and the satellite positioning information 132 into the electronic paper display unit 13 so that the electronic paper display unit 13 displays the identification warning information 131. And the satellite positioning information 132, and the control unit 14 controls the wireless transmission unit 161 to send the satellite positioning signal of the location where the electronic paper display device 1 is located (the satellite positioning signal transmitted at this time refers to having the current position of the electronic paper display device 1 or once The signal of the physical location information that has appeared). Therefore, the power quantity stored or provided by the auxiliary power storage circuit 18 at this time is that the wireless transmission unit 161 transmits the satellite positioning signal and the identification warning information 131 of the electronic paper display device 1 at least once, and the electronic paper display unit 13 updates the display at least once. Required power or power range.

The satellite positioning signal and the identification warning information 131 of the electronic paper display device 1 transmitted by the wireless transmission unit 161 can be received by another electronic device C. Thereby, the owner or others of the electronic paper display device 1 can know the current location of the electronic paper display device 1 or the physical position that has occurred at a certain point in time.

In addition, the electronic device C can be a remote server, another mobile device (a tablet or a smart phone) or a personal computer (a desktop computer or a notebook computer); and the wireless transmission unit 18 sends the identification warning information 131 and / Alternatively, the satellite positioning signal of the electronic paper display device 1 can be sent to the electronic device C by using an e-mail, an SMS message, or a communication software (App) message.

When the electronic paper display device 1 is not recharged after entering the first mode M1, and the power of the auxiliary power storage circuit 18 is continuously consumed, the electronic paper display device 1 will then advance. Enter the second mode M2. The electronic paper display unit 13 continues to display the identification warning information 131 and the satellite positioning information 132 in the second mode M2. That is, even in the case where the secondary power storage circuit 18 is exhausted or is about to be exhausted, the identification warning information 131 and the satellite positioning information 132 are continuously displayed on the electronic paper display unit 13. In this way, even if the electronic paper display device 1 is picked up by the third person when the power is exhausted, the picker can still know the owner of the electronic paper display device 1 by the identification warning information 131 on the electronic paper display unit 13. And the contact mode thereof, so that the picker can contact the owner of the electronic paper display device 1; and the satellite positioning information 132 displayed on the electronic paper display unit 13 can also remind the picker, the owner of the electronic paper display device 1 or the like The person may have known the current location of the electronic paper display device 1 and reduce the incentive for the picker to occupy the electronic paper display device 1.

After that, if the electronic paper display device 1 is reconnected to the power source for charging, or when the main power unit 15 and the control unit 14 and the electronic paper display unit 13 are electrically connected again, or when the electronic paper display device 1 is turned on again, the auxiliary power is turned on. The storage circuit 18 re-stores power and is still supplied with power from the secondary power storage circuit 18 to the control unit 14, the electronic paper display unit 13, and the wireless transmission unit 161 and satellite positioning receiving unit 162 of the wireless communication module 16. At the same time, the electronic paper display device 1 enters the third mode M3. That is, when the power detecting circuit 141 detects that the secondary power storage unit 18 is raised by less than the preset first power threshold TH1 to be greater than or equal to the first power threshold TH1 and less than the preset second power threshold TH2, At this time, the control unit 14 controls the wireless transmission unit 161 to resend another satellite positioning signal and/or the identification warning information 131 at the location of the electronic paper display device 1, and can also receive the satellite positioning signal and the identification warning information by the electronic device C. 131, enables the owner or others of the electronic paper display device 1 to know again via the electronic device C the current location of the electronic paper display device 1 or the physical position that has occurred at a certain point in time.

In this embodiment, the first power threshold TH1 and the second power threshold TH2 may be preset thresholds, and may be adjusted according to actual needs, which is not limited in the present invention. For example, the first power threshold TH1 may be the total power of the main power unit 15 or the 1% power of the maximum stored power, and the second power threshold TH2 may be set to the total power of the main power unit 15 or 20% of the maximum stored power. In other embodiments, the first power threshold TH1 may also be 3% of the total power or maximum stored power of the primary power unit 15, and the second power threshold TH2 is adjusted to be the primary power bill. The total power or maximum storage capacity of the 15 is 15% or 10%.

Then, if the electronic paper display device 1 continues to be charged in the third mode M3 to make the main power unit 15 or the power of the main power unit 15 is reconnected, the power is supplied to the main power unit 15 at this time. The electronic paper display device 1 will enter the fourth mode M4. That is, when the power detecting circuit 141 detects that the power of the main power unit 15 has been greater than or equal to the preset second power threshold TH2, the main power unit 15 is again supplied with the power of the control unit 14, and the control unit 14 The control wireless transmission unit 161 continuously transmits the satellite positioning signal and/or the identification warning information 131 at the location of the electronic paper display device 1 at a fixed time interval, and the electronic positioning device can also receive the satellite positioning signal and/or the identification warning information 131. Having the owner or other person of the electronic paper display device 1 know the current location of the electronic paper display device 1 or the physical position that has appeared at a certain point in time via the electronic device C at a fixed time interval, thereby allowing the electronic The owner or other person of the paper display device 1 can track the electronic paper display device 1 and increase the chance that the electronic paper display device 1 is found.

In addition, since the control unit 14 controls the storage unit 17 to continuously record the movement trajectory of the electronic paper display device 1, the another satellite positioning signal that the wireless transmission unit 161 retransmits the electronic paper display device 1 may also include the control unit 14 to control the storage unit. 17 recorded movement information of the electronic paper display device 1. In this case, even if the physical position of the electronic paper display device 1 in either mode is different from the physical position at the previous mode (ie, the electronic paper display device 1 is moved), the electronic paper display device 1 The owner or other person can also know the location of the e-paper display device 1 at the most recent point.

Further, in order to improve safety, the electronic paper display device 1 in the present embodiment may further include an authentication unit 19. The authentication unit 19 is at least electrically connected to the control unit 14 and receives the authentication identification information input by the user. When the authentication identification information is authenticated by the authentication unit 19, a message is sent to notify the control unit 14, and the control unit 14 can The display information displayed by the electronic paper display unit 13 is updated, and the wireless transmission unit 161 can also be stopped from transmitting the satellite positioning signal of the electronic paper display device 1. The "display information displayed by the electronic paper display unit 13" may be changed to change the information content of the identification warning information 131 and the satellite positioning information 132 displayed originally, or to stop or close the electronic paper display unit 13 to make the electronic The paper display unit 13 does not display any identification warning information 131 and satellite positioning information 132. In addition, this is The authentication identification information of the example may be password authentication information input by the user, such as an alphanumeric password or a biometric identification information of the user, for example, biometric authentication such as fingerprint, iris, palm print, facial features, etc. )News. In addition, the authentication and identification control performed by the authentication unit 19 and the control unit 14 in this embodiment may be any one of the first mode M1, the third mode M3, and the fourth mode M4, or both. In the mode.

The present invention also provides another preferred embodiment, which is also an electronic paper display device. Please refer to FIG. 5. As shown in the figure, the electronic paper display device 2 is formed into an identity recognition card, and is suitable for wearing a child, a mentally handicapped patient, or an elderly person with insufficient recognition ability or intellectual ability. The electronic paper display device 2 includes a body 20, an electronic paper display unit 23, a control unit, a power unit, a wireless communication module, and a storage unit. Compared with the electronic paper display device 1 shown in FIGS. 1A to 4C, the electronic paper display device 1 is exemplified by a smart phone. However, the electronic paper display device 2 shown in FIG. 5 is an identification card, so A backlight display unit or a self-illuminating display unit is further provided, and the remaining control unit, power unit, wireless communication module, storage unit and power storage circuit are connected to the control unit 14 of the electronic paper display device 1 and the main power unit 15, The connection relationship, the detailed features, and the operation mode of the wireless communication module 16, the storage unit 17, and the secondary power storage circuit 18 are the same, and the details are not repeated herein. Therefore, in the embodiment, the control unit is electrically connected to the electronic paper display unit, and the control unit further includes a power detecting circuit. The storage unit is electrically connected to the control unit, and at least the identification warning information 231 is stored. The satellite positioning receiving unit is electrically connected to the control unit and receives the current satellite positioning signal of the electronic paper display device 2. The power unit is at least electrically connected to the power detecting circuit of the control unit. And the control unit loads the identification warning information 231 and the satellite positioning information 232 into the electronic paper display unit when the power detecting circuit detects that the power of the power unit is greater than or equal to a first power threshold and less than or equal to a second power threshold. twenty three. Therefore, when the child wearing the electronic paper display device 2, the intelligent obstacle patient, or the elderly with insufficient recognition ability or intellectual ability is lost or lost, others can quickly know the basic information of the wearer and the Whoever contacts can make these lost children, people with intellectual disabilities, or elders with insufficient recognition or intellectual ability to be retrieved quickly and easily.

In summary, the electronic paper display device of the present invention can display the identification warning information and the satellite positioning information or transmit a satellite positioning signal when the power is interrupted, that is, in the battery detection When the measuring circuit detects that the power unit stops supplying power to the control unit, the power storage circuit can also provide power to the control unit and the electronic paper display unit, and the control unit loads the identification warning information and the satellite positioning information of the storage unit. On the electronic paper display unit. Thereby, even if the electronic paper display device is lost or the electronic paper display device is lost, the loaded identification warning information and the satellite positioning data are automatically displayed on the electronic paper display unit when the power is interrupted. In this way, the person who has reached the electronic paper display device can conveniently contact the owner and return it, or conveniently contact the relevant person to return the person wearing the electronic paper display device.

In addition, when the electronic paper display device is provided with the authentication unit, the control unit cannot update the electronic paper display unit to display the display information before the authentication unit is authenticated; therefore, the information displayed on the electronic paper display unit cannot be displayed at this time. Being overwritten by others. Thereby, even after the electronic paper display device is lost, the security level of the electronic paper display device can be maintained, thereby increasing the probability of returning and being retrieved.

The above is intended to be illustrative only and not limiting. Equivalent modifications or variations of the present invention are intended to be included within the scope of the appended claims.

11‧‧‧Backlit display unit

11'‧‧‧Self-illuminated display unit

13‧‧‧Electronic paper display unit

14‧‧‧Control unit

141‧‧‧Power detection circuit

15‧‧‧Main power unit

16‧‧‧Wireless communication module

161‧‧‧Wireless transmission unit

162‧‧‧Satellite positioning receiving unit

17‧‧‧ storage unit

18‧‧‧Sub-power storage circuit

19‧‧‧Authorization unit

Claims (11)

An electronic paper display device comprising: an electronic paper display unit; a control unit electrically connected to the electronic paper display unit, the control unit further comprising a power detection circuit; and a storage unit storing at least one identification warning information, and Electrically connecting the control unit; a wireless communication module electrically connected to the control unit, comprising a satellite positioning receiving unit, the satellite positioning receiving unit receiving a current satellite positioning signal of the electronic paper display device; and a pair a power storage circuit electrically connected to the power detecting circuit of the control unit, the satellite positioning receiving unit, and the electronic paper display unit; wherein the power detecting circuit detects that the auxiliary power storage circuit is started to supply power The control unit loads the identification warning information of the storage unit and the satellite positioning information generated by the satellite positioning signal on the electronic paper display unit. The electronic paper display device according to claim 1 is a smart phone, a tablet computer, an e-book, a notebook computer, or a wearable electronic device. The electronic paper display device of claim 1, wherein the wireless communication module further comprises a wireless transmission unit electrically connected to the control unit, and when the secondary power storage circuit is activated, The wireless transmission unit transmits a satellite positioning signal at the location of the electronic paper display device. The electronic paper display device of claim 1 or 3, wherein the electronic paper display unit continuously displays the identification warning information and the satellite positioning information when the power of the secondary power storage circuit is exhausted. The electronic paper display device of claim 1 or 3, wherein the control unit controls the storage unit to continuously record satellite positioning information of the electronic paper display device. The electronic paper display device according to claim 1 or 3, wherein the power amount supplied by the auxiliary power storage circuit is a power amount required for the electronic paper display unit to update a display, and/or the electronic device is transmitted at least once. The paper displays the amount of power required by the satellite positioning signal at the location of the device. The electronic paper display device of claim 3, further comprising a main power unit electrically connected to the power detecting circuit of the control unit, and detecting the main power when the power detecting circuit detects When the power of the unit is raised to a preset power threshold, the control unit controls the wireless transmission unit to transmit a satellite positioning signal at a position of the electronic paper display device at a fixed time interval. The electronic paper display device according to any one of claims 1 to 3, further comprising: an authentication unit electrically connected to the control unit and receiving an authentication identification information, wherein the authentication identification information After the authentication by the authentication unit, the display information of the electronic paper display unit is updated accordingly. The electronic paper display device of claim 8, wherein the authentication identification information is authenticated by the authentication unit, so that the wireless transmission unit stops transmitting the satellite positioning signal at the location of the electronic paper display device. The electronic paper display device of claim 8, wherein the authentication identification information is password authentication information or biometric information. The electronic paper display device of claim 1 or 3, wherein the secondary power storage circuit is activated when the main power unit is depleted or interrupted.