TWI687852B - Electronic device - Google Patents

Abstract

The invention discloses an electronic device. The electronic device is cooperated with a human tissue and includes a body. The body has a sensing area. The sensing area comprises a plurality of sensing units. Each sensing unit comprises a driving line, a signal line, a signal read-out line, a light-emitting element and an optical sensing element respectively. The signal line is disposed staggered with the driving line. The signal read-out line is disposed staggered with the driving line. The light-emitting element is electrically connected with the driving line and the signal line respectively. The optical sensing element is electrically connected with the driving line and the signal read-out line respectively. Wherein, the light-emitting element emits a light toward to the human tissue and received by the optical sensing element to generate a sensing signal.

Description

Electronic device

The present invention relates to an electronic device, and in particular to an electronic device that can be applied to biometrics identification or physiological parameter measurement functions.

Electronic devices, especially mobile electronic devices (such as mobile phones, tablet computers, etc.), have become one of the commonly used tools in the lives of modern people. Therefore, in the fiercely competitive electronic device market, various companies can improve the competitiveness of products by improving the additional functions of electronic devices.

In addition, in the conventional technology, when accessing confidential documents, personal data, or entering and exiting a controlled place, you must use a key, password, or access card to verify your identity, but the key or access card may be lost There is a risk of being copied, and the password may be forgotten or learned by others, causing security concerns. Therefore, biometric identification has always been a focus topic. Biometrics identification uses the unique physiological characteristics of each person to identify the user's identity. Using biometrics, the human body is the password, there is no need to memorize a long list of numbers that are not easy to remember, nor are they afraid of being lost and difficult to copy, let alone being misappropriated. Therefore, measuring the unique biological characteristics of human physiology to identify the identity of users has become an important trend in safety technology. Taking fingerprints as an example, fingerprints are one of the most unique biological characteristics, which have the characteristics of high accuracy. Therefore, fingerprints have become one of the main research directions of biometric identification.

In addition, in recent years, due to aging and changes in dietary habits, cardiovascular diseases (such as stroke) have a tendency to increase year by year and seriously threaten human life. According to reports in the medical literature in recent years, pulse and blood oxygen saturation can provide many physiological parameters on the cardiovascular side. Therefore, if the physiological parameters such as pulse and blood oxygen concentration can be measured at any time, cardiovascular disease The prevention has a lot of benefits.

The purpose of the present invention is to provide a biometric identification or physiological parameter Electronic device with measurement function.

To achieve the above object, an electronic device according to the present invention cooperates with a human body tissue. The electronic device includes a body. The main body has a sensing area, and the sensing area includes a plurality of sensing units. Each sensing unit includes a driving line, a signal line, a signal readout line, a light emitting element, and a light sensing element. The signal line and the drive line are interleaved. The signal readout line and the drive line are interleaved. The light emitting element is electrically connected to the drive line and the signal line, respectively, and the light sensing element is electrically connected to the drive line and the signal readout line, respectively. Among them, the light emitting element emits a light to the human tissue and is received by the light sensing element to generate a sensing signal.

In one embodiment, the light emitting element is an organic light emitting diode or a micro light emitting diode chip.

In one embodiment, the light sensing element includes a metal layer, an insulating layer, and a semiconductor layer. The insulating layer is disposed between the metal layer and the semiconductor layer.

In one embodiment, the light-sensing device includes a P-type semiconductor layer, an intrinsic semiconductor layer, and an N-type semiconductor layer. The intrinsic semiconductor layer is disposed between the P-type semiconductor layer and the N-type semiconductor layer.

In one embodiment, the body includes a display panel. The display panel has a display area and a peripheral area. The peripheral area is located at the periphery of the display area, and the sensing area is located at the display area.

In one embodiment, the display panel further has a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixel structures. The scan lines and the data lines are interleaved to define the sub-pixel structures, and the driving lines are sub-pictures. The scan lines corresponding to the pixel structure, and the signal lines are the data lines corresponding to the sub-pixel structure.

In one embodiment, the body includes a display panel. The display panel has a display area and a peripheral area. The peripheral area is located at the periphery of the display area, and the sensing area corresponds to the peripheral area.

In an embodiment, each sensing unit further includes a first transistor, the first transistor has a first end, a second end and a third end, the first end of the first transistor is connected to the driving line The second end of the first transistor is connected to the signal line, the third end of the first transistor is connected to one end of the light emitting element, and the other end of the light emitting element is connected to a first voltage source.

In an embodiment, each sensing unit further includes a second transistor. The second transistor has a first end, a second end, and a third end. The first end of the second transistor is connected to the driving line Then, the second end of the second transistor is connected to the signal readout line, the third end of the second transistor is connected to one end of the light sensing element, and the other end of the light sensing element is connected to a second voltage source.

In one embodiment, the electronic device can be applied to biometrics identification or physiological parameter measurement, or to the detection of touch position.

As mentioned above, in the electronic device of the present invention, the body has a sensing area, and the sensing area includes a plurality of sensing units. The signal lines and the drive lines of each sensing unit are interleaved, and the signal readout line and the drive line Interlace settings. In addition, the light-emitting element of each sensing unit is electrically connected to the drive line and the signal line, respectively, and the light-sensing element is electrically connected to the drive line and the signal readout line, respectively; The reflection, diffusion, refraction or diffraction is received by the light sensing element to generate a sensing signal. In this way, the electronic device of the present invention can have functions of biometrics identification or physiological parameter measurement.

In one embodiment, the sensing circuits for biometrics identification or physiological parameter measurement can be fabricated simultaneously in the process of the sub-pixel structure of the display panel, therefore, compared with the conventional methods, additional biometrics are provided on the electronic device As far as the detection chip of the identification or physiological parameter measurement function is concerned, the present invention has the advantage of lower cost in addition to the conventional technology. In addition, in another embodiment, an electronic device having a plurality of sensing units may be fabricated into a wafer, and the wafer (electronic device) and an organic light-emitting diode display panel (OLED) or micro diode (μ) LED) display panel, so that the chip corresponds to the peripheral area of the organic light-emitting diode display panel (OLED) or micro-diode (μLED) display panel, and then combined with a protective substrate (glass) to become another Electronic device.

1. 1a‧‧‧Electronic device

11.11a‧‧‧Display panel

111‧‧‧Lighting element

112‧‧‧Light sensing element

2‧‧‧Human tissue

A‧‧‧Region

AA‧‧‧Display area

B、Ba‧‧‧Body

C‧‧‧Semiconductor layer

D‧‧‧Drive line

DL‧‧‧Data cable

I‧‧‧essential semiconductor layer

IL‧‧‧Insulation

L‧‧‧Light

M‧‧‧Metal layer

N‧‧‧N-type semiconductor layer

P‧‧‧P-type semiconductor layer

PA‧‧‧ surrounding area

Px‧‧‧ pixel structure

R‧‧‧Signal readout line

S‧‧‧Signal line

SA‧‧‧sensing area

SL‧‧‧scan line

SU‧‧‧sensing unit

T1‧‧‧ First transistor

T2‧‧‧second transistor

Vdd‧‧‧Second voltage source

Vss‧‧‧First voltage source

FIG. 1A is a schematic diagram of an electronic device according to a preferred embodiment of the present invention.

FIG. 1B is a schematic circuit diagram of a sensing unit according to an embodiment in the electronic device of FIG. 1A.

2A and 2B are schematic diagrams of different structures of the light sensing device of FIG. 1B, respectively.

FIG. 3A is a schematic diagram of an electronic device of a preferred example of the present invention when performing biometric identification or parameter measurement.

FIG. 3B is an enlarged schematic view of one area of FIG. 3A.

4 is a schematic diagram of an electronic device according to another embodiment of the present invention.

The electronic device according to the preferred embodiment of the present invention will be described below with reference to related drawings, in which the same elements will be described with the same reference symbols.

Please refer to FIG. 1A, which is a schematic diagram of an electronic device 1 according to a preferred embodiment of the present invention.

The electronic device 1 cooperates with a human tissue 2. Here, the so-called human tissue 2 refers to human skin, such as but not limited to a finger skin (also can be tissue skin of other parts of the body), to identify the biological characteristics of the human body or to measure the physiological parameters of the human body through the electronic device 1 , Or, to detect the touch position. The electronic device 1 may be a mobile device (such as a mobile phone, a tablet computer, a laptop, or an ultra-thin laptop, or other mobile electronic device), or a wearable device, or a fixed electronic device (For example, the identification device used by the airport customs to identify biological characteristics) is not limited. Alternatively, in other embodiments, the electronic device 1 may also be a chip and be combined with other devices or objects. For example, the electronic device 1 can be combined with another electronic device so that the other electronic device (such as a mobile phone) has the function of recognizing biological characteristics of the human body or measuring physiological parameters.

The electronic device 1 of this embodiment is a smart phone, and takes the recognition of fingerprint characteristics of human body (such as fingerprints of thumb or index finger) as an example. In other embodiments, the electronic device 1 can also be used to measure the physiological parameters of the human body, such as the number of heartbeats or blood oxygen concentration (by switching different driving modes to obtain the measured physiological parameters or identify the physiological characteristics Features).

The electronic device 1 includes a body B having a sensing area SA. As the name suggests, the sensing area SA is an area for sensing human tissue 2. In addition, the body B of this embodiment further includes a display panel 11. Here, the display panel 11 is a self-luminous display panel, such as but not limited to an organic light-emitting diode display panel (OLED) or a micro-diode (μLED) display panel, and may be an active matrix (Active Matrix) Or passive matrix (Passive Matrix) display panel. The display panel 11 of this embodiment is an active matrix organic light-emitting diode display panel as an example. Among them, the display panel 11 (active matrix organic light-emitting diode display panel) has a plurality of scanning lines, a plurality of data lines and a plurality of sub-pixel (sub-pixel) structure (none shown in FIG. 1A), The scan lines are interleaved with the data lines to define the sub-pixel structures.

In addition, the display panel 11 has a display area (area in the display panel 11 for displaying images, that is, a light-permeable area) AA and a peripheral area PA adjacent to one of the display areas AA (area in the display panel 11 where no image can be displayed) ), and the sensing area SA of this embodiment is located in a specific area under the display area AA and under the display area AA. In terms of application, when the subject wants to use the electronic device 1 for biometrics identification or physiological parameter measurement, the display area AA of the display panel 11 can display a specific area, which is the sensing for identification or measurement District SA. When the subject's finger is pressed against the sensing area SA, the electronic device 1 can be used for fingerprint identification (for example, unlocking or obtaining data), or for measuring parameters such as heartbeat or blood oxygen concentration. However, in different embodiments, the sensing area SA may also be located in the peripheral area PA, which will be described below. In addition, the shape and size of the sensing area SA in this embodiment are not limited to those shown in FIG. 1A. In different embodiments, the sensing area SA may also be other positions, sizes, and sizes in the display area AA. Even the entire display area AA is the sensing area SA, and the present invention is not limited. It is particularly reminded that in other embodiments, the body of the electronic device may not have a display panel, but only a sensing area for detecting biological characteristics or physiological parameters is arranged on the body to identify the biological characteristics through the electronic device Or physiological parameter measurement function; or, the electronic device itself is a chip with elements in the sensing area and is set on a carrier board.

The sensing area SA includes a plurality of sensing units SU. Since the sensing area SA of this embodiment is located in the display area AA of the display panel 11, the electronic device 1 does not additionally incorporate the identification or detection chip of biometrics identification or physiological parameter measurement function, but directly integrates the biometrics The circuits of the sensing unit SU for identification or physiological parameter quantity are simultaneously manufactured in the sub-pixel structure process of the display panel 11. Therefore, in this embodiment, in each sensing unit SU in the sensing area SA, in addition to the circuit of the sub-pixel structure of the display panel 11 itself (for displaying a picture), it further includes Circuit structure of biological characteristics or parameters (used to detect biological characteristics or parameters).

Please refer to FIG. 1B, which is a schematic circuit diagram of a sensing unit SU of an embodiment in the electronic device 1 of FIG. 1A. Here, FIG. 1B shows the circuit structure of one sensing unit SU in the sensing area SA.

As shown in FIG. 1B, each sensing unit SU includes a driving line D, a signal line S, a signal readout line R, a light emitting element 111, and a light sensing element 112, respectively. In addition, The sensing unit SU of this embodiment further includes a first transistor T1 and a second transistor T2.

The signal line S and the drive line D are interleaved, and the signal readout line R is also interleaved with the drive line D. In addition, the light emitting element 111 is electrically connected to the drive line D and the signal line S, respectively, and the light sensing element 112 is electrically connected to the drive line D and the signal readout line R, respectively. The light emitting element 111 may be an organic light emitting diode (OLED) or a micro light emitting diode chip (uLED chip). The light-emitting element 111 of this embodiment is an organic light-emitting diode (OLED) as an example. In another embodiment, when the display panel 11 is a micro-diode (μLED) display panel, the light-emitting element 111 is a micro-light-emitting diode chip (uLED chip), and for example, but not limited to, by conductive adhesive The uLED chip is set on the substrate.

When the human tissue 2 (eg, index finger) is pressed against the sensing area SA for detection, the light-emitting element 111 can emit a light L to the human tissue 2, and after being reflected, diffused, refracted or diffracted by the human tissue 2 The light can be received by the light sensing element 112 to generate a sensing signal, which can be read by the signal readout line R. When applied to fingerprint identification, heartbeat or blood oxygen concentration detection, light sources with different wavelengths can be selected according to requirements. For example, when applied to fingerprint recognition, the light L can be selected from red light, blue light, infrared light, or green light, or light of other colors. However, when it is used to detect heartbeat or blood oxygen concentration, the light L may be, for example but not limited to, red light and infrared light.

In addition, please first refer to FIGS. 2A and 2B, which are schematic diagrams of different structures of the light sensing element 112 of FIG. 1B, respectively.

As shown in FIG. 2A, the light-sensing element 112 may include a metal layer M, an insulating layer IL, and a semiconductor layer C in this order, and the insulating layer IL is disposed between the metal layer M and the semiconductor layer C. Here, the semiconductor layer C is illuminated or not illuminated, or different illumination levels are used to obtain different photocurrents for sensing. The light-sensing element 112 of FIG. 2A is a metal-insulation-semiconductor (MIS) structure in sequence from bottom to top, and this structure can be manufactured by using a thin film transistor (TFT) process of the display panel 11, In order to save the cost of the display panel 11. In other words, when the light-sensing element 112 is of the MIS structure, the light-sensing element 112 can be manufactured using the mask and yellow light process of the original thin-film transistor (TFT) process of the display panel 11, thereby reducing the electronic device 1 the cost of.

In addition, as shown in FIG. 2B, the light sensing element 112 of this embodiment may include a P-type semiconductor layer P and an intrinsic semiconductor layer (Intrinsic semiconductor layer, undoped Semiconductor layer) I and an N-type semiconductor layer N, and the essential semiconductor layer I is disposed between the P-type semiconductor layer P and the N-type semiconductor layer N. The light-sensing element 112 of this embodiment is a PIN structure in order from top to bottom, and its material may be, for example, amorphous silicon, gallium arsenide (GaAs), or other semiconductor materials. Here, different photocurrents are used for detection by illuminating or not illuminating the essential semiconductor layer I, or different levels of illumination. In other embodiments, the light-sensing element 112 may be a NIP structure or a PN-only structure from top to bottom, which is not limited. Among them, adding the essential semiconductor layer I between the PN structures can improve the detection of light (the light sensing element 112 can be more sensitive).

In addition, in another embodiment, the light-sensing element 112 may also be a photosensitive element, such as a photodiode microchip.

Please refer to FIGS. 1A and 1B again. Since the sensing area SA of this embodiment is located in the display area AA, the light-emitting element 111 is a self-luminous element in the sub-pixel structure Px of the display panel 11 (this embodiment (Example is an organic light emitting diode), and the driving line D is the scan line SL corresponding to the sub-pixel structure Px, and the signal line S is the data line DL corresponding to the sub-pixel structure Px.

In addition, the first transistor T1 has a first terminal (gate), a second terminal (source) and a third terminal (drain), the first terminal of the first transistor T1 and the driving line D (scan Line SL) is connected, under the control of the driving line D (scanning line SL), the second end of the first transistor T1 is connected to the signal line S (data line DL), and the third end of the first transistor T1 is connected to the light One end (anode) of the element 111 is connected, and the other end (cathode) of the light-emitting element 111 is connected to a first voltage source Vss.

The second transistor T2 has a first end (gate), a second end (drain) and a third end (source), the first end of the second transistor T1 and the drive line D (scan line SL ) Connection, controlled by the drive line D (scanning line SL), the second end of the second transistor T2 is connected to the signal readout line R, and the third end of the second transistor T3 is connected to the light sensing element 112 One end (anode) is connected, and the other end (cathode) of the light sensing element 112 is connected to a second voltage source Vdd. The above-mentioned first transistor T1 and second transistor T2 can be a thin film transistor (TFT), respectively, and can be manufactured simultaneously using the TFT process of the display panel 11. In addition, it is particularly mentioned that the circuit of the sub-pixel structure Px in FIG. 1B is only an example, and it includes only a first transistor T1 in addition to the light-sensing element 112. However, in different embodiments, In addition to the light sensing element 112, the The pixel structure Px may also include two transistors and a capacitor (2T1C circuit), or three transistors and a capacitor (3T1C circuit), or a 5T2C or 6T2C circuit with voltage compensation function, the invention is not limited .

Therefore, when each scanning line SL (driving line D) of the sub-pixel structures Px of the display panel 1 receives a scanning (driving) signal, the scanning line SL (driving line D) of each sub-pixel structure Px can be respectively enabled The corresponding first transistor T1 is turned on, and a data signal corresponding to each row of sub-pixel structures Px is transmitted to the corresponding light-emitting elements of the sub-pixel structures Px through the data lines DL (signal line S) 111, to drive the light emitting elements 111 to emit light and display an image. At the same time, the light emitting element 111 of each sensing unit SU in the sensing area SA can emit light L to the human tissue 2 (fingerprint). Similarly, since the second transistor T2 of each sensing unit SU of the sensing area SA is also turned on due to the driving (scanning) signal, the light reflected, diffused, refracted or diffracted by the human tissue 2 can be sensed by light The sensing element 112 receives and generates a sensing signal, and reads the light sensing element 112 to the sensing signal through the signal readout line R.

It is particularly noted that, in different embodiments, each sub-pixel structure Px in the sensing area SA corresponds to a light-sensing element 112, or a portion of the sub-pixel structure Px in the sensing area SA has a corresponding Light sensing element 112 (for example, in the sensing area SA, only the sub-pixel structure R (red) has a corresponding light-sensing element 112); or, three sub-pixel structures R, G, B (red, (Green, blue) corresponds to only one light-sensing element 112, or other kinds of sub-pixel structure and light-sensing element 112, the present invention is not limited.

Please refer to FIGS. 3A and 3B. FIG. 3A is a schematic diagram of an electronic device of the present invention when performing biometric identification or parameter measurement, and FIG. 3B is an enlarged schematic diagram of area A of FIG. 3A.

Since the fingerprint has uneven rugged lines, and the light L emitted from the light emitting element 111 is directed to the rugged lines of the fingerprint, the different strong and weak rays reflected, diffused, refracted or diffracted by the rugged lines can be reflected by the light sensing element 112 After receiving and generating different photocurrents (sensing signals), the sensing signals of different photocurrents are read out by the signal readout line R, and then the sensing signals pre-stored in the electronic device 1 (corresponding to pre-stored fingerprints, in Set in advance before detection) for comparison. When the obtained sensing signals are the same as the pre-stored signals, the electronic device 1 can perform subsequent actions such as unlocking or data access to achieve the purpose of biometric identification through the electronic device 1 of.

In another embodiment, when the electronic device 1 is used to measure parameters such as heartbeat or blood oxygen concentration, the light-emitting element 111 also emits light L to the finger skin, which is reflected, diffused, refracted or diffracted by the finger skin The subsequent different photocurrents (sensing signals) can also be received by the light sensing element 112. The sensing signal received by the light sensing element 112 is a photoplethysmography (PPG) signal, and is read by the signal readout line R. When the pulse of the human body is generated, the blood flow of the blood vessels in the whole body will also change, which means that the content of heme and deoxyheme in the blood vessels will also change. Among them, heme and deoxyheme are quite sensitive to light of a specific wavelength (for example: red light and infrared light), so if the light emitting element 111 emits light L (for example, red light, infrared light or green light) ) To the tissues and blood vessels under the skin of the finger, and then use the light sensing element 112 to receive the light reflected or penetrated through the skin. Through the intensity of the received light, the blood flow in the blood vessel can be changed. This change is called Light volume change signal. PPG is a physical quantity generated by the blood circulation system. When the heart is contracting and relaxing, the blood flow per unit area in the blood vessel will cause periodic changes. Since the change of the PPG signal is caused by the heart beat, the energy level of the reflected, diffused, refracted or diffracted light received by the light sensing element 112 can correspond to the pulse. Therefore, the sensing unit SU can also measure changes in the pulse and blood oxygen concentration of the human body, as well as other related physiological information.

In addition, please refer to FIG. 4, which is a schematic diagram of an electronic device 1 a according to another embodiment of the present invention. The body Ba of the electronic device 1a of this embodiment has a display panel 11a, and the display panel 11a still uses an active matrix organic light-emitting diode display panel as an example.

The main difference from the electronic device 1 of FIG. 1A is that the sensing area SA of the electronic device 1a corresponds to the peripheral area PA of the display panel 11a. Therefore, the sub-pixel structures Px (shown in FIG. 1B) in the display area AA of the display panel 11a only have the light-emitting elements 111 (shown in FIG. 1B) for displaying images, but not the sensing area in FIG. 1B SA's light sensing element 112. In addition, the driving line of the sensing unit in the sensing area SA of this embodiment is not the scan line SL of the sub-pixel structure Px in FIG. 1B, and the signal line of the sensing area SA is not the sub-pixel structure of FIG. 1B. The data line DL of Px is a line additionally provided for sensing biological characteristics or biological parameters. In implementation, an electronic device with a plurality of sensing units can be made into a chip, and the chip (electronic device) can be displayed with an organic light-emitting diode display panel (OLED) or micro diode (μ LED) Panel bonding (for example, bonding) makes the chip correspond to the peripheral area of the organic light-emitting diode display panel (OLED) or micro-diode (μ LED) display panel, and then combined with a protective substrate (glass) to become The aforementioned electronic device 1a.

In addition, for other technical features of the electronic device 1a, reference may be made to the electronic device 1, which will not be repeated here.

It is also mentioned that in different embodiments, if the sensing area of the electronic device is as large as the display area and overlaps (that is, the two are the same size, the display area is the sensing area), it can be applied Detection at the touch position (here optical touch). Wherein, in the touched sensing unit, the sensing signal (photocurrent signal read by the signal readout line) generated by the light sensing element is different from the sensing signal of the untouched sensing unit , You can identify the touched position of the display panel by sensing different signals. Therefore, the electronic device can obtain the touched position without providing conventional touch electrodes, so that the electronic device has a touch function. In addition, when applied to touch position detection, since the size of each sub-pixel structure of the electronic device is quite small, there is no need to set all the sensing units in the display area (or sensing area) of the display panel to have light For the sensing element, for example, only the sensing unit is integrated into the sub-pixel structure of the same color (for example, the light-sensing element is made only in the sub-pixel structure corresponding to red), thereby reducing the sensing unit Set-up costs. In addition, in yet another embodiment, the electronic device is a chip, and combining the chip with a credit card can enable the credit card to have a biometric (fingerprint) identification function, thereby improving the security of the credit card, Not afraid of being stolen by intentional people.

In summary, in the electronic device of the present invention, the body has a sensing area, and the sensing area includes a plurality of sensing units. The signal lines and the drive lines of each sensing unit are interleaved, and the signal readout line and the drive line Interlace settings. In addition, the light-emitting element of each sensing unit is electrically connected to the drive line and the signal line, respectively, and the light-sensing element is electrically connected to the drive line and the signal readout line, respectively; After being reflected, diffused and refracted, it is received by the light sensing element to generate a sensing signal. In this way, the electronic device of the present invention can have functions of biometrics identification or physiological parameter measurement.

In one embodiment, the sensing circuits for biometrics identification or physiological parameter measurement can be fabricated simultaneously in the process of the sub-pixel structure of the display panel, therefore, compared with the conventional methods, additional biometrics are provided on the electronic device For the detection chip of identification or physiological parameter measurement function, this In addition to being different from the conventional technology, the invention has the advantage of lower cost. In addition, in another embodiment, an electronic device having a plurality of sensing units may be fabricated into a wafer, and the wafer (electronic device) and an organic light-emitting diode display panel (OLED) or micro diode (μ) LED) display panel, so that the chip corresponds to the peripheral area of the organic light-emitting diode display panel (OLED) or micro-diode (μLED) display panel, and then combined with a protective substrate (glass) to become another Electronic device.

The above is only exemplary, and not restrictive. Any equivalent modifications or changes made without departing from the spirit and scope of the present invention shall be included in the scope of the attached patent application.

111‧‧‧Lighting element

112‧‧‧Light sensing element

D‧‧‧Drive line

DL‧‧‧Data cable

Px‧‧‧ pixel structure

R‧‧‧Signal readout line

S‧‧‧Signal line

SL‧‧‧scan line

SU‧‧‧sensing unit

T1‧‧‧ First transistor

T2‧‧‧second transistor

Vdd‧‧‧Second voltage source

Vss‧‧‧First voltage source

Claims (9)

An electronic device cooperates with a human tissue. The electronic device includes: a body including a sensing area, the sensing area includes a plurality of sensing units, and each of the sensing units includes: a driving line; a signal line, It is interleaved with the drive line; a signal readout line is interleaved with the drive line; a light-emitting element is electrically connected to the drive line and the signal line; and a light-sensing element is connected to the drive line and the line, respectively The signal readout line is electrically connected; wherein, the light emitting element emits a light to the human tissue and is received by the light sensing element to generate a sensing signal; wherein each of the sensing units further includes a first transistor , The first transistor has a first end, a second end, and a third end, the first end of the first transistor is connected to the drive line, and the second end of the first transistor is connected to the The signal line is connected, the third end of the first transistor is connected to one end of the light emitting element, and the other end of the light emitting element is connected to a first voltage source. The electronic device as described in item 1 of the patent application range, wherein the light emitting element is an organic light emitting diode or a micro light emitting diode chip. The electronic device as described in item 1 of the patent application range, wherein the light-sensing element includes a metal layer, an insulating layer, and a semiconductor layer, and the insulating layer is disposed between the metal layer and the semiconductor layer. The electronic device as described in item 1 of the patent application range, wherein the light sensing element includes a P-type semiconductor layer, an intrinsic semiconductor layer, and an N-type semiconductor layer, and the intrinsic semiconductor layer is disposed on the P-type semiconductor layer and the Between N-type semiconductor layers. The electronic device as described in item 1 of the patent application scope, wherein the body further includes a display panel having a display area and a peripheral area, the peripheral area is located at the periphery of the display area, and the sensing area is located In the display area. The electronic device as described in item 5 of the patent application scope, wherein the display panel further has a plurality of scanning lines, a plurality of data lines and a plurality of pixel structures, and the scanning lines and the data lines are interleaved to define the number of times Pixel structure, the drive line is the scan line corresponding to the sub-pixel structure, And the signal line is the data line corresponding to the sub-pixel structure. The electronic device as described in item 1 of the patent application scope, wherein the body further includes a display panel having a display area and a peripheral area, the peripheral area is located at the periphery of the display area, and the sensing area corresponds to In the surrounding area. The electronic device as described in item 1 of the patent application scope, wherein each of the sensing units further includes a second transistor, the second transistor having a first end, a second end, and a third end, the first The first end of the two transistors is connected to the drive line, the second end of the second transistor is connected to the signal readout line, and the third end of the second transistor is connected to one end of the light sensing element Connected, the other end of the light sensing element is connected to a second voltage source. The electronic device as described in item 1 of the patent application scope is used for biometric identification or physiological parameter measurement, or for touch position detection.

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