Electronic device

Abstract

An electronic device includes a photodiode, a switching circuit, a readout circuit, and an energy storage component. The photodiode includes a first terminal and a second terminal to generate a signal in response to light. The switching circuit is electrically connected to the first terminal and the second terminal. When the electronic device operates in a sensing mode, the switching circuit electrically disconnects the photodiode from the energy storage component such that the signal is output to the readout circuit. When the electronic device operates in a charging mode, the switching circuit electrically connects the photodiode to the energy storage component such that the signal is output to the energy storage component.

Description

Technical Field

[0001] This disclosure relates to an electronic device that simultaneously has sensing and charging functions, and more particularly to an electronic device having a photodiode that can switch between optical sensing and light-powered charging functions. Background Technology

[0002] The addition of touch and fingerprint recognition functions to current electronic devices has led to a continuous increase in battery consumption. If the sensing components in these devices could also function as rechargeable batteries, they could convert ambient light and screen light signals into electrical signals to charge the battery, effectively extending the device's lifespan and improving charging convenience. Furthermore, this would further reduce electricity costs and environmental pollution associated with current charging methods.

[0003] Therefore, it is necessary to optimize the sensing components to achieve the purpose of switching sensing functions and solar charging functions. Summary of the Invention

[0004] This disclosure discloses an electronic device including a photodiode, a switching circuit, a readout circuit, and an energy storage component. The photodiode includes a first terminal and a second terminal for generating a signal based on light. The switching circuit is electrically connected to the first terminal and the second terminal. When the electronic device operates in a sensing mode, the switching circuit electrically disconnects the photodiode from the energy storage component, causing the signal to be output to the readout circuit. When the electronic device operates in a charging mode, the switching circuit electrically connects the photodiode to the energy storage component, causing the signal to be output to the energy storage component. Attached Figure Description

[0005] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0006] Figure 1 This is a block diagram showing an electronic device according to an embodiment of the present disclosure;

[0007] Figure 2 This is a circuit diagram showing an electronic circuit according to an embodiment of the present disclosure;

[0008] Figure 3 This is a schematic diagram showing an electronic circuit operating in a sensing mode according to an embodiment of the present disclosure;

[0009] Figure 4 This is a schematic diagram showing an electronic circuit according to an embodiment of the present disclosure operating in a charging mode;

[0010] Figure 5 This is a circuit diagram showing an electronic circuit according to another embodiment of the present disclosure;

[0011] Figure 6 This is a schematic diagram showing the operation of an electronic circuit according to another embodiment of the present disclosure in a sensing mode;

[0012] Figure 7 This is a schematic diagram showing the operation of an electronic circuit according to another embodiment of the present disclosure in a charging mode;

[0013] Figure 8 This is a circuit diagram showing an electronic circuit according to another embodiment of the present disclosure;

[0014] Figure 9 This is a schematic diagram showing an electronic circuit operating in a sensing mode according to an embodiment of the present disclosure; and

[0015] Figure 10 This is a schematic diagram showing the operation of an electronic circuit according to another embodiment of the present disclosure in a charging mode.

[0016] Symbol Explanation

[0017] 100: Electronic devices

[0018] 110, 210: Energy storage components

[0019] 120: System Board

[0020] 121: Memory

[0021] 122: Processor

[0022] 130: Panel

[0023] 131: Touch device

[0024] 132: Monitor

[0025] 140: Sensing device

[0026] 200, 500, 800: Electronic circuits

[0027] 220, 520, 820: Switching circuit

[0028] 230: Reading circuit

[0029] POWER: Electrical energy

[0030] IL: Photocurrent

[0031] DT1: First data signal

[0032] DT2: Second data signal

[0033] PD: Photodiode

[0034] NA: Positive extreme

[0035] NC: Negative Extreme

[0036] Q1: First switch assembly

[0037] Q2: Second switch assembly

[0038] QR1: First Read Switch Component

[0039] QR2: Second Read Switch Component

[0040] MUX1: The First Multitasking Machine

[0041] MUX2: Second Multitasking Server

[0042] MUX3: The Third Multitasking Server

[0043] MUX4: The Fourth Multitasking Server

[0044] DMUX1: The First Solution Multitasking Device

[0045] DMUX2: Second Decoder Multitasking

[0046] N1: First node

[0047] N2: Second node

[0048] NR: Read Node

[0049] TC1: First control terminal

[0050] TC2: Second control terminal

[0051] SW1: First Selection Switch Assembly

[0052] SW2: Second Selector Switch Assembly

[0053] SW3: Third Selector Switch Assembly

[0054] SW4: Fourth Selector Switch Assembly

[0055] SW5: Fifth Selector Switch Assembly

[0056] SW6: Sixth Selector Switch Assembly

[0057] SW7: Seventh Selector Switch Assembly

[0058] SW8: Eighth Selector Switch Assembly

[0059] SW9: Ninth Selector Switch Assembly

[0060] SW10: Tenth Selector Switch Assembly

[0061] SW11: Eleventh Selector Switch Assembly

[0062] SW12: Twelfth Selector Switch Assembly

[0063] SC1: First control signal

[0064] SC2: Second control signal

[0065] SC3: Third control signal

[0066] SC4: Fourth control signal

[0067] SC5: Fifth control signal

[0068] SC6: Sixth control signal

[0069] SC7: Seventh control signal

[0070] SC8: Eighth control signal

[0071] SC9: Ninth Control Signal

[0072] SC10: Tenth control signal

[0073] SC11: Eleventh control signal

[0074] SC12: Twelfth control signal

[0075] SCHG1: First charging signal

[0076] SCHG2: Second charging signal

[0077] SGT: Gate signal

[0078] SRC: Read control signals

[0079] SR: Reset signal

[0080] SD: Output signal

[0081] V1: First voltage

[0082] V2: Second voltage

[0083] V3: Third voltage

[0084] ST1: First Energy Storage Terminal

[0085] ST2: Second energy storage terminal

[0086] NEX1: First outer node

[0087] NEX2: Second External Node

[0088] RST: Reset status

[0089] EXP: Exposure Status

[0090] RD: Read Status

[0091] VE1: First external voltage

[0092] VE2: Second external voltage

[0093] VE3: Third external voltage Detailed Implementation

[0094] The following description is an embodiment of this disclosure. It is intended to illustrate the general principles of this disclosure and should not be construed as a limitation thereof. The scope of this disclosure shall be defined by the claims.

[0095] It is understood that although terms such as "first," "second," and "third" may be used herein to describe various components, constituent parts, regions, layers, and / or portions, these components, constituent parts, regions, layers, and / or portions should not be limited by these terms, and these terms are only used to distinguish different components, constituent parts, regions, layers, and / or portions. Therefore, a first component, constituent part, region, layer, and / or portion discussed below may be referred to as a second component, constituent part, region, layer, and / or portion without departing from the teachings of some embodiments of this disclosure.

[0096] It is worth noting that the following disclosure provides multiple embodiments or examples for practicing different features of this disclosure. The specific component examples and arrangements described below are merely for briefly illustrating the spirit of this disclosure and are not intended to limit its scope. Furthermore, the same component symbols or words may be repeated in multiple examples in the following description. However, the purpose of repetition is solely to provide a simplified and clear explanation and is not intended to limit the relationship between the various embodiments and / or configurations discussed below.

[0097] The directional terms used in the following embodiments, such as up, down, left, right, front, or back, are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this disclosure. It should be understood that components specifically described or illustrated may exist in various forms well known to those skilled in the art. Furthermore, when a component or membrane is referred to as being on or connected to another component or membrane, it should be understood that the component or membrane is directly located on or directly connected to the other component or membrane, or that there may be other components or membranes present between them (not directly). Conversely, when a component or membrane is referred to as being "directly" on or "directly connected" to another component or membrane, it should be understood that there are no inserted components or membranes between them.

[0098] In some embodiments of this disclosure, terms such as "connection" and "interconnection," unless specifically defined, may refer to two structures being in direct contact, or to two structures not being in direct contact, wherein another structure is disposed between the two structures. Furthermore, these terms regarding engagement and connection may also include situations where both structures are movable or both structures are fixed. In addition, the term "electrical connection" includes any direct and indirect electrical connection means.

[0099] The electrical connections or couplings described in this disclosure can refer to direct connections or indirect connections. In the case of a direct connection, the endpoints of the components on two circuits are directly connected or connected to each other by a conductor segment. In the case of an indirect connection, the endpoints of the components on two circuits are connected by a switch, diode, capacitor, inductor, resistor, other suitable components, or combinations of the above components, but are not limited thereto.

[0100] In this disclosure, the electronic device may include, but is not limited to, a display device, a backlight device, an antenna device, a sensing device, or a splicing device. The electronic device may be a bendable or flexible electronic device. The display device may be a non-emissive display device or a self-emissive display device. The antenna device may be a liquid crystal type antenna device or a non-liquid crystal type antenna device. The sensing device may be a sensing device that senses capacitance, light, heat, or ultrasound, but is not limited to these. Electronic components may include passive components and active components, such as capacitors, resistors, inductors, diodes, transistors, etc. Diodes may include light-emitting diodes or photodiodes. Light-emitting diodes may include, for example, organic light-emitting diodes (OLEDs), mini LEDs, micro LEDs, or quantum dot LEDs, but are not limited to these. The splicing device may be, for example, a display splicing device or an antenna splicing device, but is not limited to these. It should be noted that the electronic device may be any combination of the foregoing, but is not limited to these. The following description uses display devices as electronic devices or splicing devices to illustrate the contents of this disclosure, but this disclosure is not limited thereto.

[0101] Figure 1 This is a block diagram showing an electronic device according to an embodiment of the present disclosure. (See figure below.) Figure 1 As shown, the electronic device 100 includes an energy storage component 110, a system board 120, a panel 130, and a sensing device 140. The energy storage component 110 stores electrical energy (POWER) and can supply the stored electrical energy (POWER) to the system board 120. According to many embodiments of this disclosure, the energy storage component 110 may be a battery, a capacitor, or other component that can be used to store electrical energy; for example, the energy storage component 110 may be a solar cell.

[0102] System board 120 provides the POWER power supplied by energy storage component 110 to panel 130 and sensing device 140. System board 120 and panel 130 communicate via a first data signal DT1, and system board 120 and sensing device 140 communicate via a second data signal DT2. Figure 1 As shown, the system board 120 includes a memory 121 and a processor 122. The memory 121 is used to store the user's fingerprint, and the processor 122 is used to operate in sensing mode or charging mode depending on whether the touch device 131 is triggered.

[0103] Panel 130 includes a touch device 131 and a display 132. The display 132 has a display surface (not shown in the figure), and the touch device 131 is located on the back side of the display surface. The touch device 131 detects whether the display surface of the display 132 is touched. According to one embodiment of the present disclosure, a sensing device 140 is disposed on panel 130 and located on the back side of the display surface of display 132. The sensing device 140 can sense light to generate fingerprint information and provide the generated fingerprint information to processor 122 through a second data signal DT2. In some embodiments, the fingerprint information can generate an image or data. In addition, the sensing device 140 can also sense light to generate electrical energy POWER to charge the energy storage component 110. According to one embodiment of the present disclosure, the sensing device 140 is a photodiode.

[0104] According to one embodiment of this disclosure, when the touch device 131 detects that the display surface has been touched, the processor 122 operates in a sensing mode to perform fingerprint comparison, and compares the fingerprint information sensed by the sensing device 140 with the user's fingerprint stored in the memory 121, wherein the display surface of the display 132 can provide a light source. According to another embodiment of this disclosure, when the touch device 131 does not detect that the display surface has been touched, the processor 122 operates in a charging mode, at which time the sensing device 140 converts the received light into a photocurrent IL, and the system board 120 controls the photocurrent IL generated by the sensing device 140 to charge the energy storage component 110.

[0105] Figure 2 This is a circuit diagram showing an electronic circuit according to an embodiment of the present disclosure. For example... Figure 2 As shown, the electronic circuit 200 includes an energy storage component 210, a photodiode PD, a first switching component Q1, a switching circuit 220, and a reading circuit 230, wherein the energy storage component 210 corresponds to... Figure 1 The energy storage component 110. According to one embodiment of the present disclosure, the switching circuit 220 and the reading circuit 230 are located in the electronic device.

[0106] A photodiode (PD) includes a first terminal and a second terminal, used to detect light and generate a signal. The photodiode (PD) corresponds to... Figure 1 The sensing device 140. In some embodiments, the first terminal and the second terminal can be the anode NA and the cathode NC, respectively. The switching circuit 220 is electrically connected to the anode NA of the photodiode PD, and the first switching component Q1 is electrically connected to the cathode NC of the photodiode PD. According to some embodiments of this disclosure, the electrical connection includes direct connection and indirect connection, and the electrical connection will not be repeated below.

[0107] like Figure 2As shown, the switching circuit 220 includes a first multiplexer MUX1, a first demultiplexer DMUX1, and a second multiplexer MUX2. The first switching component Q1 is electrically connected between the first node N1 and the cathode NC, and the first switching component Q1 is turned on or off according to the signal received by the first control terminal TC1.

[0108] like Figure 2 As shown, the first multiplexer MUX1 includes a first selection switch component SW1 and a second selection switch component SW2. The first selection switch component SW1 provides a first voltage V1 to the first node N1 according to a first control signal SC1, and the second selection switch component SW2 electrically connects the first energy storage terminal ST1 to the first node N1 according to a second control signal SC2.

[0109] The first multitasking device DMUX1 includes a third selection switch component SW3 and a fourth selection switch component SW4. The third selection switch component SW3 provides the second voltage V2 to the anode terminal NA according to the third control signal SC3, and the fourth selection switch component SW4 electrically connects the second energy storage terminal ST2 to the anode terminal NA according to the fourth control signal SC4.

[0110] The second multitasking unit MUX2 includes a fifth selection switch component SW5 and a sixth selection switch component SW6. The fifth selection switch component SW5 provides a first charging signal SCHG1 to the first control terminal TC1 according to the fifth control signal SC5, and the sixth selection switch component SW6 provides a reset signal SR to the first control terminal TC1 according to the sixth control signal SC6.

[0111] like Figure 2 As shown, the read circuit 230 includes a first read switch component QR1 and a second read switch component QR2. The first read switch component QR1 generates a data signal SD based on the voltage at the cathode terminal NC. The second read switch QR2 outputs the data signal SD based on the gate signal SGT. According to an embodiment of this disclosure, the first voltage V1 is greater than the second voltage V2, and the third voltage V3 is greater than the second voltage V2, but is not limited thereto.

[0112] According to an embodiment of this disclosure, when Figure 1 When the processor 122 operates in sensing mode, the switching circuit 220 electrically separates the photodiode PD from the energy storage component 210, and uses the readout circuit 230 to read the voltage at the cathode terminal NC and output the output signal SD. According to another embodiment of this disclosure, when... Figure 1 When the processor 122 operates in charging mode, the switching circuit 220 electrically connects the photodiode PD to the energy storage component 210, enabling the photodiode PD to utilize the photocurrent IL converted from light (e.g., ...). Figure 1(As shown) the energy storage component 210 is charged.

[0113] Figure 3 This is a schematic diagram showing an electronic circuit operating in a sensing mode according to an embodiment of the present disclosure, wherein... Figure 3 The dashed line represents that the path of the switching circuit 220 remains non-conductive, and the solid line represents that the path of the switching circuit 220 operates in sensing mode. According to an embodiment of this disclosure, when Figure 1 When the processor 122 operates in sensing mode, the electronic circuit 200 operates sequentially in reset state, exposure state and readout state, and the switching circuit 220 electrically separates the photodiode PD and the energy storage component 210.

[0114] When electronic circuit 200 operates in the reset state, the sixth selection switch component SW6 of the second multiplexer MUX2 provides the reset signal SR to the first control terminal TC1 according to the sixth control signal SC6, thereby turning on the first switch component Q1. The first selection switch component SW1 of the first multiplexer MUX1 provides the first voltage V1 to the cathode terminal NC via the first switch component Q1 according to the first control signal SC1. The third selection switch component SW3 of the first demultiplexer DMUX1 provides the second voltage V2 to the anode terminal NA according to the third control signal SC3.

[0115] After the reset state, the electronic circuit 200 operates in the exposure state. When the electronic circuit 200 operates in the exposure state, the first switching component Q1 is not turned on based on the reset signal SR, the first multiplexer MUX1 controls the first voltage V1 to stop being supplied to the first node N1, and the first demultiplexer DMUX1 controls the second voltage V2 to be continuously supplied to the anode NA. According to one embodiment of this disclosure, when the electronic circuit 200 operates in the exposure state, the photodiode PD is used to sense light to generate fingerprint information. According to another embodiment of this disclosure, the photodiode PD performs fingerprint sensing in the exposure state.

[0116] After the exposure state, the electronic circuit 200 then operates in the readout state. When the electronic circuit 200 operates in the readout state, the first readout switch component QR1 of the readout circuit 230 generates a data signal SD based on the voltage at the cathode terminal NC, and the second readout switch component QR2 outputs the data signal SD according to the gate signal SGT. According to an embodiment of this disclosure, the data signal SD is used to represent a grayscale value, and Figure 1 The processor 122 compares the data signal SD with the user's fingerprint stored in the memory 121 to complete fingerprint identification.

[0117] Figure 4 This is a schematic diagram showing an electronic circuit according to an embodiment of the present disclosure operating in a charging mode, wherein... Figure 4 The dashed line represents that this path of the switching circuit 220 remains non-conductive, while the solid line represents that this path of the switching circuit 220 operates in charging mode. When Figure 1 When the processor 122 operates in charging mode, the fifth selection switch component SW5 of the second multiplexer MUX2 provides the first charging signal SCHG1 to the first control terminal TC1 according to the fifth control signal SC5, thereby turning on the first switch component Q1. The second selection switch component SW2 of the first multiplexer MUX1 electrically connects the first node N1 to the first energy storage terminal ST1 of the energy storage component 210 according to the second control signal SC2. The fourth selection switch component SW4 of the first demultiplexer DMUX1 electrically connects the second energy storage terminal ST2 of the energy storage component 210 to the anode terminal NA according to the fourth control signal SC4. Therefore, the photodiode PD charges the energy storage component 210 with the photocurrent IL generated by sensing light. According to an embodiment of this disclosure, the voltage of the second energy storage terminal ST2 is greater than the voltage of the first energy storage terminal ST1.

[0118] Figure 5 This is a circuit diagram showing an electronic circuit according to another embodiment of the present disclosure. Figure 5 Electronic circuit 500 and Figure 2 Compared to electronic circuit 200, electronic circuit 500 further includes a second switching component Q2, and the switching circuit 520 of electronic circuit 500 further includes a third multiplexer MUX3. The second switching component Q2 is electrically connected between the first switching component Q1 and the cathode NC, and includes a second control terminal TC2, wherein the second switching component Q2 is turned on or off according to the signal received by the second control terminal TC2. The first switching component Q1 and the second switching component Q2 are electrically connected to the second node N2, and the read circuit 230 generates a data signal SD based on the voltage of the second node N2.

[0119] The third multitasking unit MUX3 includes a seventh selection switch component SW7 and an eighth selection switch component SW8. The seventh selection switch component SW7 provides the second charging signal SCHG2 to the second control terminal TC2 according to the seventh control signal SC7, and the eighth selection switch component SW8 reads the control signal SRC according to the eighth control signal SC8.

[0120] Figure 6 This is a schematic diagram showing the operation of an electronic circuit according to another embodiment of the present disclosure in a sensing mode, wherein Figure 6 The dashed line represents that the path of the switching circuit 520 remains non-conductive, and the solid line represents that the path of the switching circuit 520 operates in sensing mode. According to an embodiment of this disclosure, when Figure 1When the processor 122 operates in sensing mode, the electronic circuit 500 operates sequentially in reset state, exposure state and readout state, and the switching circuit 520 electrically separates the photodiode PD and the energy storage component 210 from each other.

[0121] When electronic circuit 500 operates in the reset state, the sixth selection switch component SW6 of the second multiplexer MUX2 provides the reset signal SR to the first control terminal TC1 according to the sixth control signal SC6, thereby turning on the first switch component Q1. The eighth selection switch component SW8 of the third multiplexer MUX3 provides the read control signal SRC to the second control terminal TC2 according to the eighth control signal SC8, thereby turning on the second switch component Q2. The first selection switch component SW1 of the first multiplexer MUX1 provides the first voltage V1 to the cathode terminal NC via the first switch component Q1 and the second switch component Q2 according to the first control signal SC1. The third selection switch component SW3 of the first demultiplexer DMUX1 provides the second voltage V2 to the anode terminal NA according to the third control signal SC3.

[0122] After the reset state, the electronic circuit 500 operates in the exposure state. When the electronic circuit 500 operates in the exposure state, the first switching component Q1 is not turned on based on the reset signal SR, the eighth selection switching component SW8 is not turned on based on the eighth control signal SC8, thereby stopping the read control signal SRC from being supplied to the second switching component Q2, the first multiplexer MUX1 controls the first voltage V1 to stop being supplied to the first node N1, and the first demultiplexer DMUX1 controls the second voltage V2 to be continuously supplied to the anode terminal NA. According to one embodiment of the present disclosure, when the electronic circuit 500 operates in the exposure state, the photodiode PD is used to sense light to generate fingerprint information. According to another embodiment of the present disclosure, the photodiode PD performs fingerprint sensing in the exposure state.

[0123] After the exposure state, the electronic circuit 500 then operates in the read state. When the electronic circuit 500 operates in the read state, the first read switch component QR1 of the read circuit 230 generates a data signal SD based on the voltage of the second node N2. The second read switch component QR2 outputs the data signal SD according to the gate signal SGT. According to another embodiment of the present disclosure, the first read switch component QR1 of the read circuit 230 generates the data signal SD based on the voltage of the cathode terminal NC through the second switch component Q2. According to an embodiment of the present disclosure, the data signal SD is used to represent a grayscale value, and Figure 1 The processor 122 compares the data signal SD with the user's fingerprint stored in the memory 121 to complete fingerprint identification.

[0124] If leakage occurs at the cathode NC of the photodiode PD, the data signal SD generated by the readout circuit 230 will be inaccurate. The second switching component Q2 helps to reduce leakage at the cathode NC, thereby improving the accuracy of the data signal SD generated by the readout circuit 230.

[0125] Figure 7 This is a schematic diagram showing the operation of an electronic circuit according to another embodiment of the present disclosure in a charging mode, wherein Figure 7 The dashed line represents that this path of the switching circuit 520 remains non-conductive, while the solid line represents that this path of the switching circuit 520 operates in charging mode. When Figure 1 When the processor 122 operates in charging mode, the electronic circuit 500 also operates in charging mode. The fifth selection switch component SW5 of the second multiplexer MUX2 provides the first charging signal SCHG1 to the first control terminal TC1 according to the fifth control signal SC5, thereby turning on the first switch component Q1. The seventh selection switch component SW7 of the third multiplexer MUX3 provides the second charging signal SCHG2 to the second control terminal TC2 according to the seventh control signal SC7, thereby turning on the second switch component Q2.

[0126] Furthermore, the second selection switch component SW2 of the first multiplexer MUX1 electrically connects the first node N1 to the first energy storage terminal ST1 of the energy storage component 210 according to the second control signal SC2. The fourth selection switch component SW4 of the first demultiplexer DMUX1 electrically connects the second energy storage terminal ST2 of the energy storage component 210 to the anode terminal NA according to the fourth control signal SC4. Therefore, the photodiode PD can charge the energy storage component 210 with the photocurrent IL generated by sensing light.

[0127] Figure 8 This is a circuit diagram showing an electronic circuit according to another embodiment of the present disclosure. For example... Figure 8 As shown, the electronic circuit 800 includes an energy storage component 210, a photodiode PD, a first switching component Q1, and a switching circuit 820, wherein the energy storage component 210 corresponds to... Figure 1 The energy storage component 110. According to one embodiment of the present disclosure, the switching circuit 820 is located in the electronic device. The switching circuit 820 is electrically connected between the energy storage component 210 and the photodiode PD, and the switching circuit 820 includes a fourth multiplexer MUX4 and a second demultiplexer DMUX2.

[0128] The first switching component Q1 electrically connects the first node N1 to the cathode terminal NC according to the gate signal SGT. The fourth multiplexer MUX4 includes a ninth selection switch component SW9 and a tenth selection switch component SW10. The ninth selection switch component SW9 electrically connects the first external node NEX1 to the first node N1 according to the ninth control signal SC9. The tenth selection switch component SW10 electrically connects the first energy storage terminal ST1 of the energy storage component 210 to the first node N1 according to the tenth control signal SC10.

[0129] The second demultiplexer DMUX2 includes an eleventh selector switch assembly SW11 and a twelfth selector switch assembly SW12. The eleventh selector switch assembly SW11 electrically connects the second external node NEX2 to the anode terminal NA according to the eleventh control signal SC11. The twelfth selector switch assembly SW12 electrically connects the second energy storage terminal ST2 of the energy storage assembly 210 to the anode terminal NA according to the twelfth control signal SC12.

[0130] According to an embodiment of this disclosure, when Figure 1 When the processor 122 operates in sensing mode, the switching circuit 820 electrically separates the photodiode PD from the energy storage component 210 and outputs the output signal SD at the first external node NEX1. According to another embodiment of this disclosure, when... Figure 1 When the processor 122 operates in charging mode, the switching circuit 820 electrically connects the photodiode PD to the energy storage component 210, so that the photodiode PD can charge the energy storage component 210 using the photocurrent IL converted from light.

[0131] Figure 9 This is a schematic diagram showing an electronic circuit operating in a sensing mode according to an embodiment of the present disclosure, wherein... Figure 9 The dashed line represents that the path of the switching circuit 820 remains non-conductive, and the solid line represents that the path of the switching circuit 820 operates in sensing mode. According to an embodiment of this disclosure, when Figure 1 When the processor 122 operates in sensing mode, the electronic circuit 800 operates sequentially in reset state RST, exposure state EXP and readout state RD, and the switching circuit 820 electrically separates the photodiode PD and the energy storage component 210 from each other.

[0132] When the electronic circuit 800 operates in the reset state RST, the first switching component Q1 is turned on according to the gate signal SGT, and the ninth selection switch component SW9 of the fourth multiplexer MUX4 electrically connects the first external node NEX1 to the first node N1 according to the ninth control signal SC9. The eleventh selection switch component SW11 of the second demultiplexer DMUX2 electrically connects the second external node NEX2 to the anode terminal NA according to the eleventh control signal SC11. Furthermore, when the electronic circuit 800 operates in the reset state RST, the first external node NEX1 receives a first external voltage VE1, and the second external node NEX2 receives a second external voltage VE2. According to one embodiment of this disclosure, the second external voltage VE2 is greater than the first external voltage VE1. Since the voltage at the anode terminal NA is greater than the voltage at the cathode terminal NC, the photodiode PD is forward biased, and the voltage difference between the anode terminal NA and the first node N1 is VE1-VE2.

[0133] After the reset state RST, the electronic circuit 800 operates in the exposure state EXP. When the electronic circuit 800 operates in the exposure state EXP, the first switching component Q1 is not turned on according to the gate signal SGT, and the second external node NEX2 receives a third external voltage VE3. According to one embodiment of the present disclosure, the third external voltage VE3 is less than the second external voltage VE2. Since the photodiode PD is reverse biased when the electronic circuit 800 operates in the exposure state EXP, according to one embodiment of the present disclosure, the photodiode PD is used to sense light to generate fingerprint information when the electronic circuit 800 operates in the exposure state EXP. According to another embodiment of the present disclosure, the photodiode PD performs fingerprint sensing in the exposure state EXP.

[0134] After the exposure state EXP, the electronic circuit 800 then operates in the readout state RD. When the electronic circuit 800 operates in the readout state RD, the first switching component Q1 is turned on according to the gate signal SGT, and the voltage at the cathode terminal NC generates a data signal SD at the first external node NEX1 via the first switching component Q1 and the fourth multiplexer MUX4. According to an embodiment of this disclosure, the data signal SD is a DC voltage, wherein the DC voltage value of the data signal SD represents a grayscale value, and Figure 1 The processor 122 compares the data signal SD with the user's fingerprint stored in the memory 121 to complete fingerprint identification.

[0135] Figure 10 This is a schematic diagram showing the operation of an electronic circuit according to another embodiment of the present disclosure in a charging mode, wherein Figure 10The dashed line represents that the path of the switching circuit 820 remains non-conductive, and the solid line represents that the path of the switching circuit 820 operates in charging mode. When the electronic circuit 800 operates in charging mode, the first switching component Q1 is turned on according to the gate signal SGT, the fourth multiplexer MUX4 electrically connects the first node N1 to the first energy storage terminal ST1 of the energy storage component 210, and the second demultiplexer DMUX2 electrically connects the second energy storage terminal ST2 of the energy storage component 210 to the anode terminal NA. Therefore, the photodiode PD charges the energy storage component 210 with the photocurrent IL generated by sensing light. According to an embodiment of this disclosure, the voltage of the second energy storage terminal ST2 is greater than the voltage of the first energy storage terminal ST1.

[0136] This disclosure proposes an electronic device with a switchable optical sensing function and a solar charging function, which enables the photodiode to not only identify fingerprints but also charge energy storage components, thereby effectively extending the usage time of the electronic device or improving the convenience of charging the electronic device.

[0137] While the embodiments and advantages of this disclosure have been disclosed above, it should be understood that those skilled in the art can make modifications, substitutions, and refinements without departing from the spirit and scope of this disclosure. Furthermore, the scope of protection of this disclosure is not limited to the processes, machines, manufacturing, material composition, apparatus, methods, and steps described in the specific embodiments of this specification. Those skilled in the art can understand from the disclosure of some embodiments of this disclosure that current or future developed processes, machines, manufacturing, material composition, apparatus, methods, and steps can be used according to some embodiments of this disclosure, as long as they can perform substantially the same function or obtain substantially the same results in the embodiments described herein. Therefore, the scope of protection of this disclosure includes the aforementioned processes, machines, manufacturing, material composition, apparatus, methods, and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of this disclosure also includes combinations of various claims and embodiments.

Claims

1. An electronic device, characterized in that, include: A photodiode includes a first terminal and a second terminal, used to generate a signal based on a light source; A switching circuit, electrically connected to the first terminal and the second terminal, and comprising: A first multiplexer includes a first selection switch assembly and a second selection switch assembly, wherein the first selection switch assembly is electrically connected between a first voltage and a first node, and the second selection switch assembly is electrically connected between a first energy storage terminal and the first node. A first multitasking device includes a third selection switch assembly and a fourth selection switch assembly, wherein the third selection switch assembly is electrically connected between a second voltage and a first terminal, and the fourth selection switch assembly is electrically connected between a second energy storage terminal and the first terminal; and A second multiplexer includes a fifth selection switch assembly and a sixth selection switch assembly, wherein the fifth selection switch assembly is electrically connected between a first charging signal and a first control terminal, and the sixth selection switch assembly is electrically connected between a reset signal and the first control terminal. A read circuit includes: A first read-switching assembly is electrically connected to the second terminal and generates a data signal based on the voltage at the second terminal; and A second read switch assembly is electrically connected to the first read switch assembly and outputs the data signal according to a gate signal; An energy storage module, including a first energy storage terminal and a second energy storage terminal; and A first switching assembly is electrically connected between the first node and the second terminal and includes the first control terminal, wherein the first switching assembly is turned on or off according to the signal received by the first control terminal; When the electronic device operates in a sensing mode, the switching circuit electrically separates the photodiode from the energy storage component, so that the signal is output to the reading circuit. When the electronic device operates in a charging mode, the switching circuit electrically connects the photodiode to the energy storage component, so that the signal is output to the energy storage component.

2. The electronic device as claimed in claim 1, characterized in that, The first selection switch assembly provides the first voltage to the first node according to a first control signal, and the second selection switch assembly electrically connects the first node to the first energy storage terminal of the energy storage assembly according to a second control signal. The third selection switch assembly provides the second voltage to the first terminal according to a third control signal, and the fourth selection switch assembly electrically connects the second energy storage terminal of the energy storage assembly to the first terminal according to a fourth control signal. The fifth selection switch assembly provides the first charging signal to the first control terminal according to a fifth control signal, and the sixth selection switch assembly provides the reset signal to the first control terminal according to a sixth control signal.

3. An electronic device, characterized in that, include: A photodiode includes a first terminal and a second terminal, used to generate a signal based on a light source; A switching circuit, electrically connected to the first terminal and the second terminal, and comprising: A first multiplexer includes a first selection switch assembly and a second selection switch assembly, wherein the first selection switch assembly is electrically connected between a first voltage and a first node, and the second selection switch assembly is electrically connected between a first energy storage terminal and the first node. A first demultiplexer includes a third selection switch assembly and a fourth selection switch assembly, wherein the third selection switch assembly is electrically connected between a second voltage and a first terminal, and the fourth selection switch assembly is electrically connected between a second energy storage terminal and the first terminal; A second multiplexer includes a fifth selection switch assembly and a sixth selection switch assembly, the fifth selection switch assembly being electrically connected between a first charging signal and a first control terminal, and the sixth selection switch assembly being electrically connected between a reset signal and the first control terminal; and A third multitasking unit includes a seventh selection switch assembly and an eighth selection switch assembly, wherein the seventh selection switch assembly is electrically connected between a second charging signal and a second control terminal, and the eighth selection switch assembly is electrically connected between a read control signal and the second control terminal; A read circuit includes: A first read-switching assembly is electrically connected to the second terminal and generates a data signal based on the voltage at the second terminal; and A second read switch assembly is electrically connected to the first read switch assembly and outputs the data signal according to a gate signal; An energy storage component, including a first energy storage terminal and a second energy storage terminal; A first switching assembly, electrically connected between the first node and the second terminal and including the first control terminal, wherein the first switching assembly is turned on or off according to a signal received by the first control terminal; and A second switching assembly is electrically connected between the first switching assembly and the second terminal and includes a second control terminal, wherein the second switching assembly is turned on or off according to a signal received by the second control terminal, wherein the first switching assembly and the second switching assembly are electrically connected to a second node, wherein the reading circuit receives the voltage of the second node; When the electronic device operates in a sensing mode, the switching circuit electrically separates the photodiode from the energy storage component, so that the signal is output to the reading circuit. When the electronic device operates in a charging mode, the switching circuit electrically connects the photodiode to the energy storage component, so that the signal is output to the energy storage component.

4. The electronic device as claimed in claim 3, characterized in that, The seventh selection switch assembly provides the second charging signal to the second control terminal according to a seventh control signal, and the eighth selection switch assembly provides the reading control signal to the second control terminal according to an eighth control signal.

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