Electronic device

Abstract

This invention discloses an electronic device, comprising a panel, multiple signal lines, multiple sub-pixels, multiple biosensing units, a first switching unit, and a second switching unit. The panel has a working area and a peripheral area. Multiple signal lines are disposed on the panel and include first signal lines and second signal lines. Multiple sub-pixels are disposed within the working area and include first sub-pixels and second sub-pixels. Multiple biosensing units are disposed within the working area and include first biosensing units. The first switching unit is disposed in the peripheral area and electrically connected to the first sub-pixel via the first signal lines. The second switching unit is disposed in the peripheral area and electrically connected to the second sub-pixel via the second signal lines. The first biosensing unit is electrically connected to the first signal lines, and the first time period during which the first switching unit is activated is longer than the second time period during which the second switching unit is activated.

Description

Technical Field

[0001] This invention relates to an electronic device, and more particularly to an electronic device comprising a panel and a biosensing unit. Background Technology

[0002] In recent years, the technology of integrating panels and biometric sensing units into electronic products has flourished, for example, enabling fingerprint recognition in displays such as smartphones or tablets. However, when the fingerprint recognition element is located within the display panel, the fingerprint recognition element and wires affect the pixel aperture ratio, especially for high-resolution displays. Summary of the Invention

[0003] One of the objectives of this invention is to provide an electronic device in which some components can share signal lines, thereby reducing the number of metal traces, layers, and / or the number of holes required for layer transitions, or reducing the proportion of non-transparent area, so as to achieve both fingerprint recognition function and high aperture ratio.

[0004] An embodiment of the present invention provides an electronic device, which includes a panel, a plurality of signal lines, a plurality of sub-pixels, a plurality of biosensing units, a first switching unit, and a second switching unit. The panel has a working area and a peripheral area. The plurality of signal lines are disposed on the panel and include a first signal line and a second signal line. The plurality of sub-pixels are disposed within the working area and include a first sub-pixel and a second sub-pixel. The plurality of biosensing units are disposed within the working area and include a first biosensing unit. The first switching unit is disposed in the peripheral area and electrically connected to the first sub-pixel via a first signal line. The second switching unit is disposed in the peripheral area and electrically connected to the second sub-pixel via a second signal line. The first biosensing unit is electrically connected to the first signal line, and the first time period during which the first switching unit is turned on is longer than the second time period during which the second switching unit is turned on.

[0005] An embodiment of the present invention also provides an electronic device, which includes a panel, a plurality of signal lines, a plurality of touch units, and a plurality of biosensing units. The panel has a working area and a peripheral area. The plurality of signal lines are disposed on the panel and include touch signal lines. The plurality of touch units are disposed within the working area and include a first touch unit. The plurality of biosensing units are disposed within the working area and include a first biosensing unit. The first touch unit is electrically connected to the touch signal lines, and the first biosensing unit is electrically connected to the touch signal lines. Attached Figure Description

[0006] Figure 1 This is a top view schematic diagram of an electronic device according to an embodiment of the present invention.

[0007] Figure 2 for Figure 1A magnified top view of a portion of region A in the middle.

[0008] Figure 3 for Figure 1 A schematic diagram of the local amplifier circuit architecture in region B of the middle area.

[0009] Figure 4 This is a schematic diagram of the signal cycle of a switching unit according to an embodiment of the present invention.

[0010] Figure 5 These are top views and partially enlarged top views of an electronic device according to an embodiment of the present invention.

[0011] Figure 6 This is a top view of a partial area of ​​the signal line, sub-pixel, and biosensing unit according to an embodiment of the present invention.

[0012] Figure 7 for Figure 5 The circuit architecture diagram of the biosensing unit is shown.

[0013] Figure 8 This is a partial cross-sectional schematic diagram of the signal lines of an electronic device according to an embodiment of the present invention.

[0014] Figure 9 This is a schematic diagram of the component signal waveforms of an electronic device according to an embodiment of the present invention.

[0015] Figure 10 This is a partial cross-sectional schematic diagram of an electronic device according to an embodiment of the present invention.

[0016] Explanation of reference numerals in the attached figures: 100 - Panel; 102 - Working area; 104 - Peripheral area; 110 - Multiplexing area; 120 - Fan-out area; 130 - Display gate driving unit; 140 - Sensing gate driving unit; 150 - Bonding area; 160 - Substrate; 170 - Buffer layer; 175 - Bottom light-shielding layer; 200 - Signal line; 202 - Source line; 210 - First signal line; 211 - Connecting element; 220 - Second signal line; 230 - Third signal line; 240 - Touch signal line; 241 - Bonding electrode; 250 - Voltage source signal line; 300 - Sub-pixel; 310 - First sub-pixel; 320 - Second sub-pixel; 330 - Third sub-pixel; 400 - Biosensor unit; 410 - First biosensor unit; 500 - Touch unit; 510 - First touch unit; 520 - Contact hole; 600, 610, 620, 630, 640, 650, 660, 670, 680, 690 - Insulating layer; 700 - Light shield; A, B, C - Areas; BL - Backlight unit; Cl ock - Gate signal periodic line; D1 - First direction; D2 - Second direction; DP, TP, FPS, Wpx, Wfp - Waveform; ED - Electronic device; H1, H2, H3, H4 - Connection hole; I - Touch state; II - Biosensing state; L1, L2, 800, 810 - Conductive layer; I1, I2 - Insulating layer; Pd - Display time period; Pt - Touch time period; P1 - Reset time period; P2 - Exposure time period; P3 - Scan time period; PX - Pixel; S - View Observation direction; SL1, SL2 - stray light; SW - sensing switch unit; SW1 - first switch unit; SW2 - second switch unit; SW3 - third switch unit; t - time; T - time period; T1 - first time period; T2 - second time period; TFT1, TFT2, TFT3, 180 - thin film transistor; V - top view direction; Vdd - operating voltage; Vrst - reset voltage; Vin - input voltage; Vsel - selection voltage; Vout - output voltage; CR - current source. Detailed Implementation

[0017] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, in order to facilitate understanding and for the sake of brevity, the various drawings in this invention only depict a portion of the device or structure, and specific elements in the drawings are not drawn to scale. Furthermore, the number and dimensions of each element in the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0018] Throughout this specification and claims, certain terms are used to refer to specific elements. Those skilled in the art will understand that electronic device manufacturers may use different names to refer to the same element. This document is not intended to distinguish between elements that have the same function but different names. In the following specification and claims, words such as "comprising" and "including" are open-ended terms and should therefore be interpreted as "containing but not limited to...". When the terms "comprising," "including," and / or "having" are used in this specification, they specify the presence of the stated feature, area, step, operation, and / or element, but do not exclude the presence or addition of one or more other features, areas, steps, operations, elements, and / or combinations thereof.

[0019] The use of ordinal numbers, such as "first," "second," etc., in the specification and claims to modify elements of a claim does not in itself imply or represent any prior ordinal number of the claimed element, nor does it represent the order of one claimed element with another or the order of manufacture. The use of these ordinal numbers is solely to clearly distinguish one claimed element with a given name from another claimed element with the same name. Therefore, a first element referred to in the specification may be a second element in the claims.

[0020] 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 invention. It should be understood that elements specifically described or illustrated can exist in various forms well known to those skilled in the art. Furthermore, when an element or film is referred to as being on or connected to another element or film, it should be understood that the element or film is directly located on or directly connected to the other element or film, or that there may be other elements or films present between them (not directly). Conversely, when an element or film is referred to as being "directly" on or "directly connected" to another element or film, it should be understood that there are no inserted elements or films between them.

[0021] In this text, the terms "approximately," "substantially," and "roughly" typically indicate a range within 10%, 5%, 3%, 2%, 1%, or 0.5% of a given value. The given quantity is an approximate quantity, meaning that the meaning of "approximately," "substantially," or "roughly" can still be implied even without specific mention of these terms.

[0022] The electronic device, through the structure of the embodiments of the present invention, can achieve a display effect. The electronic device may include a display device, a sensing device, a splicing device, or a transparent display device, but is not limited thereto. The electronic device may be rollable, stretchable, bendable, or flexible. The electronic device may include, for example, liquid crystal, light-emitting diode (LED), quantum dot (QD), fluorescent, phosphorescent, or other suitable materials; the LED may include, for example, organic light-emitting diode (OLED), mini LED, micro LED, or quantum dot LED (QDLED, QLED), but is not limited thereto. The splicing device may be, for example, a display splicing device, but is not limited thereto. It should be noted that the electronic device can be any arrangement and combination of the foregoing, but is not limited thereto. Furthermore, the shape of the electronic device may be rectangular, circular, polygonal, with curved edges, or other suitable shapes. Electronic devices may have peripheral systems such as drive systems, control systems, light source systems, and shelving systems to support display devices or splicing devices, but are not limited thereto.

[0023] It should be understood that, without departing from the spirit of the present invention, features in several different embodiments can be replaced, recombined, or mixed to complete other embodiments.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 . Figure 1 This is a top view schematic diagram of an electronic device according to an embodiment of the present invention. Figure 2 The following can be: Figure 1 A magnified top view of a portion of region A in the middle. Figure 3 As shown Figure 1 Schematic diagram of the local amplifier circuit architecture in region B. Figure 4 This is a schematic diagram of the signal period of a switching unit according to an embodiment of the present invention, where the horizontal axis represents time t. Figure 1 , Figure 2 and Figure 3As shown, an electronic device ED according to an embodiment of the present invention may include a panel 100, a plurality of signal lines 200, a plurality of sub-pixels 300, a plurality of biosensing units 400, a first switching unit SW1, a second switching unit SW2, a third switching unit SW3, and a sensing switching unit SW. The panel 100 has a working area 102 and a peripheral area 104. The peripheral area 104 is adjacent to the working area 102; for example, the peripheral area 104 may be located around the working area 102, but is not limited thereto. Figure 1 As shown, the peripheral area 104 of the electronic device ED may also include a data demultiplexer region 110, a fan-out region 120, a display gate drive unit 130, a sensing gate drive unit 140, and / or a bonding region 150, but is not limited thereto. Figure 1 As shown, the multiplexing area 110, fan-out area 120, and junction area 150 are sequentially arranged in the peripheral area 104 on one side (e.g., below) of the working area 102, generally along the first direction D1. The display gate drive unit 130 and the sensing gate drive unit 140 are arranged in the peripheral area 104 on at least the other side (e.g., the left and right sides) of the working area 102 to correspondingly drive... Figure 2 The multiple sub-pixels 300 or biosensing units 400 shown. However, the functions of each region in the surrounding area 104 are not limited to this.

[0025] Multiple signal lines 200 are disposed on the panel 100, and the multiple signal lines 200 may include a first signal line 210, a second signal line 220, and a third signal line 230. Figure 2 In the illustrated embodiment, the first signal line 210, the second signal line 220, and the third signal line 230 may extend along the first direction D1. The plurality of signal lines 200 may include, for example, data lines, scan lines, readout lines, and / or touch signal lines.

[0026] Multiple sub-pixels 300 can be disposed within the working area 102 and have a first sub-pixel 310 and a second sub-pixel 320. A sub-pixel 300 can be, for example, an area defined by two adjacent signal lines 200 (e.g., data lines) extending along a first direction D1 and two adjacent signal lines 200 (e.g., scan lines) extending along a second direction D2. Figure 2As shown. Several sub-pixels 300 can form a pixel PX, and multiple pixel PXs can be arranged in an array within the working area 102 to provide a display screen. In some embodiments, the first sub-pixel 310 can be one of a blue sub-pixel, a red sub-pixel, or a green sub-pixel, and the second sub-pixel 320 can be another of a blue sub-pixel, a red sub-pixel, or a green sub-pixel. In some embodiments, each pixel PX can include a first sub-pixel 310, a second sub-pixel 320, and a third sub-pixel 330, wherein the first sub-pixel 310 can be a blue sub-pixel, the second sub-pixel 320 can be a green sub-pixel, and the third sub-pixel 330 can be a red sub-pixel. However, the colors corresponding to the first sub-pixel, the second sub-pixel 320, and the third sub-pixel 330 are not limited to the above, and can be interchanged in different embodiments, so that the formed pixel PX includes blue sub-pixels, green sub-pixels, and red sub-pixels. In some embodiments, the pixel PX can also include other colors and / or more numbers of sub-pixels, and is not limited to the above pixel design.

[0027] Multiple bio-sensor units 400 may be disposed within the working area 102 and include a first bio-sensor unit 410. The multiple bio-sensor units 400 may include, for example, a fingerprint sensor, but are not limited thereto. In some embodiments, the bio-sensor unit 400 may correspond to a pixel PX setting, for example, one bio-sensor unit 400 corresponds to one pixel PX setting (e.g., ...). Figure 2 (as shown), but not limited to this. Depending on actual needs, it can also be designed with multiple biosensing units 400 corresponding to one pixel PX setting, or one biosensing unit 400 corresponding to multiple pixel PX settings.

[0028] The first switching unit SW1 can be disposed in the peripheral area 104 and electrically connected to the first sub-pixel 310 via the first signal line 210. The second switching unit SW2 can be disposed in the peripheral area 104 and electrically connected to the second sub-pixel 320 via the second signal line 220. Furthermore, the first biosensing unit 410 can be electrically connected to the first signal line 210, meaning that both the first sub-pixel 310 and the first biosensing unit 410 are electrically connected to and can share the first signal line 210. Since the first sub-pixel 310 and the first biosensing unit 410 share the first signal line 210, the RC (resistance-capacitance) load of the first signal line 210 is heavier than that of the second signal line 220. Therefore, the first time period T1 during which the first switching unit SW1, electrically connected to the first signal line 210, is turned on can be longer than the second time period T2 during which the second switching unit SW2 is turned on, allowing the first sub-pixel 310 to have a longer charging time. Figure 4 As shown. In some embodiments, as Figures 1 to 3As shown, the sensing switch unit SW can be disposed in the peripheral area 104 and electrically connected to the first biosensing unit 410 via the first signal line 210. The third switch unit SW3 can be disposed in the peripheral area 104 and electrically connected to the third sub-pixel 330 via the third signal line 230. The first signal line 210 can be a data line of the first sub-pixel 310, the second signal line 220 can be a data line of the second sub-pixel 320, and the third signal line 230 can be a data line of the third sub-pixel 330. The first signal line 210 can also be a signal readout line of the first biosensing unit 410. That is, the first signal line 210 is shared as both a data line electrically connected to the first sub-pixel 310 and a signal readout line electrically connected to the first biosensing unit 410. The term "shared" means that the first sub-pixel 310 and the first biosensing unit 410 can use the same first signal line 210 to receive or output signals at different times. By sharing the first signal line 210, the number of holes required for routing and layer transitions within the working area 102 can be reduced or the aperture ratio increased, thereby balancing high-resolution display and fingerprint recognition functions. Furthermore, the shared signal line can be further divided into multiple signal lines in or near the peripheral area 104, depending on the design.

[0029] like Figure 4 As shown, the first switch unit SW1 is turned on for a first time period T1, the second switch unit SW2 is turned on for a second time period T2, and the third switch unit SW3 is turned on for a third time period T3. The corresponding scan line (e.g., a signal line 200 extending along the second direction D2, where the second direction D2 may be different from the first direction D1, for example, approximately perpendicular to the first direction D1) is turned on within the time period T (i.e., T1). Figure 4 A voltage is also reached within the gate signal period line labeled Clock, causing the gates of sub-pixels 300 (such as the first sub-pixel 310, the second sub-pixel 320, and the third sub-pixel 330) to be in the on state, allowing sub-pixels 300 to receive display data from signal lines 200 (such as the first signal line 210, the second signal line 220, and the third signal line 230) and display an image. Since the first sub-pixel 310 and the first biosensing unit 410 are electrically connected to the first signal line 210, the first time period T1 for the first switching unit SW1 electrically connected to the first signal line 210 to be turned on is designed to be longer than the second time period T2 for the second switching unit SW2 to be turned on, and / or may be longer than the second time period T3 for the third switching unit SW3 to be turned on.

[0030] In some embodiments, such as Figure 1 and Figure 3As shown, the first switching unit SW1, the second switching unit SW2, the third switching unit SW3, and the sensing switching unit SW can be disposed within the multiplexing demodulation area 110 and can be electrically connected to the source line 202 of the multiple signal lines 200. The source line 202 can extend through the fan-out area 120 and enter Figure 1 The bonding area 150 shown is electrically connected to a bonding pad (not shown) disposed in the bonding area 150, and the bonding pad may also be electrically connected to a chip (not shown) disposed on the bonding area 150. Furthermore, the display gate drive unit 130 and the sensing gate drive unit 140 may be electrically connected to the bonding pad (not shown) of the bonding area 150, respectively.

[0031] Please refer to Figure 5 , Figure 6 and Figure 7 . Figure 5 This is a top view of an electronic device according to an embodiment of the present invention, with a partially enlarged view of the touch unit and sub-pixels shown on its lower side. Figure 6 This is a top view schematic diagram of signal lines, sub-pixels, and biosensing units in a partial area according to an embodiment of the present invention, wherein... Figure 6 As shown Figure 5 A magnified top view of a portion of the central region C. Figure 7 for Figure 5 The diagram shows the circuit architecture of the biosensing unit. Figure 5 , Figure 6 and Figure 7 As shown, an electronic device ED according to an embodiment of the present invention may include a panel 100, a plurality of signal lines 200, a plurality of touch units 500, and a plurality of biosensing units 400. The panel 100 has a working area 102 and a peripheral area 104. The peripheral area 104 is adjacent to the working area 102, for example, the peripheral area 104 may be located around the working area 102, but is not limited thereto. Circuit designs such as driving circuits, switching circuits, and / or fan-out structures may be arranged in the peripheral area 104, but are not limited thereto. The plurality of signal lines 200 are arranged on the panel 100 and include touch signal lines 240, wherein the plurality of signal lines 200 may also include, for example, data lines, scan lines, and / or signal readout lines.

[0032] Multiple touch units 500 are disposed within the working area 102, and a first touch unit 510 therein is electrically connected to a touch signal line 240. In some embodiments, the first touch unit 510 may be electrically connected to the touch signal line 240 through one or more contact holes 520.

[0033] Multiple biometric sensing units 400 are disposed within the working area 102 and include a first biometric sensing unit 410. The multiple biometric sensing units 400 may include, for example, a fingerprint sensor, but are not limited thereto. Furthermore, the first biometric sensing unit 410 is electrically connected to the touch signal line 240, that is, both the first touch unit 510 and the first biometric sensing unit 410 are electrically connected to the touch signal line 240.

[0034] In some embodiments, such as Figure 7 As shown, the first biosensing unit 410 is electrically connected to the touch signal line 240, the first electrode of thin-film transistor TFT1, and the gate of thin-film transistor TFT3. It is also electrically connected to thin-film transistor TFT2 via TFT1 and TFT3. TFT1 can function as a reset element, TFT2 as a selection element, and TFT3 as an amplification element. TFT2 is electrically connected to a current source CR. The second electrode of TFT1 and the first electrode of TFT3 are electrically connected to the operating voltage Vdd. The gate of TFT1 is electrically connected to the reset voltage Vrst, and its first electrode can provide an input voltage Vin to the gate of TFT3 and the first biosensing unit 410. The first electrode of TFT2 is electrically connected to the second electrode of TFT3, and the gate of TFT2 is electrically connected to the selection voltage Vsel. Its second electrode can output an output voltage Vout. Furthermore, the touch signal line 240 can provide a bias voltage to the first biosensing unit 410. It should be noted that thin-film transistors TFT1, TFT2, and TFT3 can be located in a light-shielding area, such as a black matrix (not shown), and the current source CR can be located in an external driving chip (not shown), but the present invention is not limited thereto. Furthermore, the circuit arrangement and the uses of each component in the present invention are merely examples, and the circuit design and electrical connections of each component can be modified according to actual needs.

[0035] When the electronic device ED is in touch state I, the touch signal line 240 provides a waveform voltage (e.g., a square wave signal) to provide the signal required for touch sensing. At this time, thin-film transistors TFT1 and TFT2 are off, and thin-film transistor TFT3 is on. When the electronic device ED is in certain stages of biosensing state II (e.g....), Figure 9When the reset time period P1 and scan time period P3 are not in touch state I, the touch signal line 240 can provide a fixed bias voltage to the first biosensing unit 410. At this time, thin-film transistors TFT1, TFT2, and TFT3 are all turned on, and the signal sensed by the first biosensing unit 410 can be output as an output voltage Vout through thin-film transistor TFT2 to the signal readout line (not shown). Through the above design, the touch signal line 240 can serve as the bias line of the first biosensing unit 410. That is, the touch signal line electrically connected to the first touch unit 510 and the bias line electrically connected to the first biosensing unit 410 share the touch signal line 240. The term "shared" means that the first biosensing unit 410 and the first touch unit 510 can receive voltage through the same touch signal line 240 at different times. By sharing the same touch signal line 240, the number of holes required for routing and layer transitions within the working area 102 can be reduced or the aperture ratio increased to achieve high-resolution fingerprint recognition. Furthermore, the shared signal line can be further divided into multiple signal lines in or near the peripheral area 104.

[0036] In some embodiments of the electronic device ED, based on the structure of the above embodiments, the first signal line 210 can be shared by designing the data line electrically connected to the first sub-pixel 310 and the signal readout line electrically connected to the first biosensing unit 410, or the touch signal line electrically connected to the first touch unit 510 and the bias line electrically connected to the first biosensing unit 410 can share the touch signal line 240. That is, the first signal line 210 can be electrically connected to both the first sub-pixel 310 and the first biosensing unit 410 simultaneously, serving as both a data line for transmitting display data to the first sub-pixel 310 and a signal readout line for outputting sensing signals from the first biosensing unit 410. The touch signal line 240 can be electrically connected to both the first touch unit 510 and the first biosensing unit 410 simultaneously, serving as both a touch signal transmission wire for the first touch unit 510 and a bias line for the first biosensing unit 410. The resulting structure can be as follows: Figure 8 As shown. Figure 8 This is a partial cross-sectional schematic diagram of the signal lines of an electronic device according to an embodiment of the present invention. The signal lines 200 of the electronic device ED may include a first signal line 210, a second signal line 220, a third signal line 230, a touch signal line 240, and a voltage source signal line 250. The first signal line 210, the second signal line 220, and the third signal line 230 may be formed by the same conductive layer L1, and the touch signal line 240 and the voltage source signal line 250 may be formed by the same conductive layer L2. The conductive layer L2 is disposed on the conductive layer L1. An insulating layer I1 may be disposed between the conductive layer L1 and the conductive layer L2, and another insulating layer I2 may cover the conductive layer L2. Figure 8As shown, the touch signal line 240 may at least partially overlap with the first signal line 210 in the top view direction V of the electronic device ED, but the structure of the present invention and the use of each signal line are not limited thereto. For example, in a variation embodiment, the touch signal line 240 of the present invention may at least partially overlap with one of the first signal line 210, the second signal line 220 and the third signal line 230 in the top view direction V of the electronic device ED.

[0037] It should be noted that the above Figures 5 to 8 The diagram shows an electronic device including a touch unit according to the present invention. Its component electrical connections and signal line design, as well as film and structural design, can also be applied to... Figures 1 to 4 In some embodiments of the present invention, in other words, in certain embodiments of the present invention, Figures 1 to 8 This can also be considered as the same embodiment.

[0038] Please refer to Figure 9 and Figures 1 to 7 . Figure 9 This is a schematic diagram of the component signal waveforms of an electronic device according to an embodiment of the present invention, wherein the horizontal axis represents time t, and the vertical axis represents the time period or the on / off state of the signal. Figure 9 The waveform DP represents the time period for the electronic device ED to display one frame, denoted by the display time period Pd; the waveform TP represents the time period for the touch unit 500 (e.g., the first touch unit 510) to operate, denoted by the touch time period Pt. Waveform TP can also represent the time the touch unit is activated when the electronic device ED is in a touch state; the waveform FPS represents the time period for the biosensing unit 400 (e.g., the first biosensing unit 410) to operate; the waveform Wpx represents the activation time of the first switch unit SW1, the second switch unit SW2, and the third switch unit SW3; and the waveform Wfp represents the activation time of the sensing switch unit SW. The rising portion of waveforms Wpx and Wfp indicates that the corresponding switch unit is activated or providing a signal, while the non-rising portion indicates that the corresponding switch unit is deactivated or not providing a signal. For example... Figure 9 and Figures 1 to 7As shown, in some embodiments, the electronic device ED may include a first touch unit 510, a first biosensing unit 410, a first switch unit SW1, a second switch unit SW2, a third switch unit SW3, and a sensing switch unit SW. The first switch unit SW1, the second switch unit SW2, and the third switch unit SW3 correspond to the first sub-pixel 310, the second sub-pixel 320, and the third sub-pixel 330, respectively, and control the switching of these sub-pixels. Therefore, the opening and closing times of the first switch unit SW1, the second switch unit SW2, and the third switch unit SW correspond to the opening and closing times of the first sub-pixel 310, the second sub-pixel 320, and the third sub-pixel 330, respectively, and the sum of their opening times corresponds to the display time period Pd. The sensing switch unit SW is electrically connected to the first biosensing unit 410; therefore, the opening and closing times of the sensing switch unit SW correspond to the operating time of the first biosensing unit 410, and also correspond to the waveform FPS. The arrangement, structure, and connection relationships of the above components have been described in detail in the foregoing embodiments, and will not be repeated here.

[0039] During the reset time period P1 of the first biosensing unit 410, the first switch unit SW1, the second switch unit SW2, and the third switch unit SW3 are turned off, and the sensing switch unit SW is turned on, so that the first biosensing unit 410 is in a reset state and the input voltage Vin at one end of the first biosensing unit 410 (shown in...) Figure 7 The first biosensor 410 has an initial voltage. During the exposure time period P2 of the first biosensor 410, the sensing switch unit SW is turned off, and the first switch unit SW1, the second switch unit SW2, and the third switch unit SW3 are turned on, so that the first biosensor 410 is in an exposure state. At this time, the reflected light will have different intensity distributions according to the biological surface characteristics (such as the peaks and troughs of a fingerprint), causing the input voltage Vin to change. During the scanning time period P3 of the first biosensor 410, the first switch unit SW1, the second switch unit SW2, and the third switch unit SW3 are turned off, and the sensing switch unit SW is turned on, so that the input voltage Vin of the first biosensor 410 can be transmitted through the following means during the scanning time period P3: Figure 7 The circuit shown on the right outputs the output voltage Vout to the signal readout line (not shown in the figure).

[0040] It should be noted that although the biosensing state II of the aforementioned first biosensing unit 410 may include a reset time period P1, an exposure time period P2, and a scan time period P3, and the total duration of this biosensing state may be as long as one or even multiple display time periods Pd, but... Figure 7 In the circuit shown, thin-film transistors TFT1 to TFT3 are only fully activated during the reset time period P1 and the scan time period P3. During the exposure time period P2, Figure 7 The switching states of each component in the circuit shown can be the same as in touch state I, so that the input voltage Vin changes due to the light received by the first biosensing unit 410.

[0041] Please refer to Figure 10 . Figure 10 This is a partial cross-sectional schematic diagram of an electronic device according to an embodiment of the present invention. In some embodiments, such as... Figure 10 As shown, the electronic device ED may further include an insulating layer 600 overlapping the first biosensing unit 410. In the viewing direction S, the insulating layer 600 has an arc-shaped appearance and is disposed around and may surround the first biosensing unit 410. Since the insulating layer 600 is only disposed around the first biosensing unit 410, the panel 100 has a raised shape in the corresponding area where the first biosensing unit 410 is disposed. In some embodiments, the electronic device ED may further include a light shield 700 disposed on the insulating layer 600 and may partially overlap the first biosensing unit 410, i.e., the light shield 700 may overlap a portion of the first biosensing unit 410 in the top-view direction V of the electronic device ED, to reduce stray light SL1 (e.g., from a backlight or oblique large-angle ambient light) incident on the first biosensing unit 410, thereby improving the sensing quality of the first biosensing unit 410. The light shield 700 may include, for example, a metallic material, but is not limited thereto.

[0042] For example, such as Figure 10 As shown, the electronic device ED may include a backlight unit BL and a panel 100. The panel 100 is disposed on the backlight unit BL, and the panel 100 may include a substrate 160, a buffer layer 170, a bottom light-shielding layer 175, a thin-film transistor 180, an insulating layer 610, an insulating layer 620, a connecting element 211, an insulating layer 630, an insulating layer 640, an insulating layer 650, a bonding electrode 241, an insulating layer 660, a first biosensing unit 410, an insulating layer 600, an insulating layer 670, a light shield 700, an insulating layer 680, an insulating layer 690, and conductive layers 800 and 810 (e.g., transparent conductive layers such as indium tin oxide (ITO)). The substrate 160 may include rigid and / or flexible materials, such as glass, a quartz substrate, polyimide (PI), polyethylene terephthalate (PET), other suitable materials, or combinations thereof, but is not limited thereto. The thin-film transistor 180 can be used, for example, as a switching element or a driving element, but is not limited thereto. It should be noted that... Figure 10 The thin-film transistor 180 shown is equivalent to Figure 7The thin-film transistor TFT1 is shown. A connecting element 211 is electrically connected to the thin-film transistor 180 through a connecting hole H1, and a bonding electrode 241 is electrically connected to the connecting element 211 through a connecting hole H2. The connecting element 211 may be constructed with the same conductive layer as the aforementioned first signal line 210, for example... Figure 8 The conductive layer L1 is shown. The bonding electrode 241 is electrically connected to the first biosensing unit 410 and can be disposed between the first biosensing unit 410 and the backlight unit BL. It can reduce stray light SL2 emitted from the backlight source incident on the first biosensing unit 410, thereby improving the sensing quality of the first biosensing unit 410. The bonding electrode 241 may include, for example, a metallic material, but is not limited thereto. In this embodiment, the bonding electrode 241 can be formed of the same conductive layer as the aforementioned touch signal line 240, for example... Figure 8 The conductive layer L2 is shown. The first biosensing unit 410 is, for example, a PIN diode, any other suitable photoelectric conversion element, or a photosensing element, but the first biosensing unit 410 of the present invention is not limited thereto, and any other suitable biosensing element may be used as the first biosensing unit 410 of the present invention. The light shield 700 may be electrically connected to the bonding electrode 241, such as Figure 10 As shown, for example, the light shield 700 can be electrically connected to the bonding electrode 241 via connection holes H3 and H4, so that the light shield 700 has the same potential as the bonding electrode 241. This reduces the impact of potential differences in the light shield on display, touch sensing, or biometric sensing. However, the electronic device of the present invention is not limited thereto. In some embodiments, the light shield 700 may not be electrically connected to the bonding electrode 241, and the potential of the light shield 700 itself may be floating. In some embodiments, the light shield 700 may also be part of a black matrix.

[0043] In summary, the electronic device according to embodiments of the present invention can reduce the number of metal trace layers and the number of holes required for layer transition by sharing a portion of the signal lines, thereby increasing the aperture ratio and enabling high-resolution fingerprint recognition.

[0044] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Those skilled in the art will recognize that the present invention can have various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electronic device, characterized in that, include: A panel, consisting of a working area and a surrounding area; Multiple signal lines are disposed on the panel and include a first signal line and a second signal line; Multiple sub-pixels are set within the working area and each has a first sub-pixel and a second sub-pixel; Multiple biosensing units are disposed within the working area and include a first biosensing unit; A first switching unit is disposed in the surrounding area and electrically connected to the first sub-pixel via the first signal line; as well as A second switching unit is disposed in the surrounding area and electrically connected to the second sub-pixel via the second signal line. The first biosensing unit is electrically connected to the first signal line, and the first time period during which the first switching unit is turned on is longer than the second time period during which the second switching unit is turned on.

2. The electronic device according to claim 1, characterized in that, The first signal line is a signal readout line of the first biosensing unit.

3. The electronic device according to claim 1, characterized in that, The first sub-pixel can be a blue sub-pixel, a red sub-pixel, or a green sub-pixel.

4. The electronic device according to claim 1, characterized in that, It also includes multiple touch units, which are disposed in the working area and have a first touch unit. The multiple signal lines also include a touch signal line. The first touch unit is electrically connected to the touch signal line, and the first biosensing unit is electrically connected to the touch signal line.

5. The electronic device according to claim 4, characterized in that, When the electronic device is in a biosensing state, the touch signal line provides a fixed voltage; when the electronic device is in a touch state, the touch signal line provides a wavy voltage.

6. The electronic device according to claim 1, characterized in that, It also includes an insulating layer that overlaps the first biosensing unit, the insulating layer having an arc-shaped appearance.

7. The electronic device according to claim 6, characterized in that, It also includes a light shield disposed on the insulating layer and partially overlapping the first biosensing unit.

8. An electronic device, characterized in that, include: A panel, consisting of a working area and a surrounding area; Multiple signal lines are arranged on the panel, including a touch signal line; Multiple touch units are disposed in the working area and include a first touch unit; as well as Multiple biosensing units are disposed within the working area, and a first biosensing unit is included. The first touch unit is electrically connected to the touch signal line, and the first biosensing unit is electrically connected to the touch signal line. Specifically, when the electronic device is in a biosensing state, the touch signal line provides a fixed voltage, and when the electronic device is in a touch state, the touch signal line provides a wavy voltage.

9. The electronic device according to claim 8, characterized in that, It also includes an insulating layer that overlaps the first biosensing unit, the insulating layer having an arc-shaped appearance.

Images