WO2019033350A1 - 显示模组及电子设备 - Google Patents

显示模组及电子设备 Download PDF

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Publication number
WO2019033350A1
WO2019033350A1 PCT/CN2017/097910 CN2017097910W WO2019033350A1 WO 2019033350 A1 WO2019033350 A1 WO 2019033350A1 CN 2017097910 W CN2017097910 W CN 2017097910W WO 2019033350 A1 WO2019033350 A1 WO 2019033350A1
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WO
WIPO (PCT)
Prior art keywords
photosensitive
light
display
panel
display module
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Application number
PCT/CN2017/097910
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English (en)
French (fr)
Inventor
李问杰
Original Assignee
深圳信炜科技有限公司
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Filing date
Publication date
Application filed by 深圳信炜科技有限公司 filed Critical 深圳信炜科技有限公司
Priority to PCT/CN2017/097910 priority Critical patent/WO2019033350A1/zh
Priority to CN201790000157.1U priority patent/CN209708109U/zh
Publication of WO2019033350A1 publication Critical patent/WO2019033350A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition

Definitions

  • the utility model relates to a display module and an electronic device for sensing biometric information.
  • the optical fingerprint recognition module includes an optical fingerprint sensor 400 and a light source 402.
  • the optical fingerprint sensor 400 is disposed under the protective cover 401 of the mobile terminal.
  • the light source 402 is disposed adjacent to one side of the optical fingerprint sensor 400.
  • the light signal emitted by the light source 402 passes through the protective cover 401 and reaches the finger F, is reflected by the valleys and ridges of the finger F, and is received by the optical fingerprint sensor 400, and A fingerprint image of the finger F is formed.
  • the above optical fingerprint recognition module can only be limited to a predetermined area of the mobile terminal, such as a non-display area of the mobile terminal, and must contact the predetermined area to perform fingerprint recognition, and the use is still limited. Therefore, it is necessary to propose a structure that can be set in the display area and realize fingerprint recognition of any area in the display area.
  • the embodiments of the present invention aim to at least solve one of the technical problems existing in the prior art. To this end, the embodiments of the present invention need to provide a display module and an electronic device.
  • a display device including a display panel for performing image display
  • a photosensitive module disposed above the display panel, comprising a photosensitive panel and an anti-aliasing imaging element located above the photosensitive panel for sensing an optical signal to obtain a target object contacting or approaching the display module Predetermined biometric information;
  • the photosensitive panel includes a third light transmissive region through which an optical signal emitted by the display panel passes.
  • the photosensitive module is located above the display panel, so the light signal reflected by the target object directly reaches the photosensitive panel, thereby avoiding interference of other substances during the transmission of the optical signal, and improving the sensing precision of the photosensitive module.
  • the embodiment of the present invention prevents aliasing of the optical signals received by the photosensitive panel by providing an anti-aliasing imaging element, thereby improving the sensing accuracy of the photosensitive module.
  • the photosensitive module can be independently fabricated, and then the display module is assembled, thereby accelerating the preparation of the display module.
  • the display panel includes a plurality of display pixels, and the display pixels are disposed corresponding to the third light transmissive area.
  • the setting of the photosensitive module does not affect the display effect of the display device.
  • a space is formed between adjacent display pixels
  • the photosensitive panel includes a transparent substrate and a plurality of photosensitive cells disposed on the transparent substrate, and the photosensitive unit is located above the interval .
  • the photosensitive unit is disposed above the interval between the display pixels, thereby improving the display effect of the display device.
  • the photosensitive unit includes at least one photosensitive device and at least one switching device for receiving a scan driving signal and conducting after receiving the scan driving signal, and using a reference A signal is applied to the photosensitive device to drive the photosensitive device to operate.
  • the switching device is located below the photosensitive device. In this way, the arrangement of the switching device and the photosensitive device is made more compact.
  • the photosensitive device selects a photosensitive device that is highly sensitive to a blue light signal or a green light signal.
  • the photosensitive module further includes a filter film disposed on the photosensitive panel for filtering optical signals other than the preset wavelength band. Through the setting of the filter film, the interference of the ambient light is eliminated, and the sensing precision of the photosensitive module is improved.
  • the photosensitive panel is sized to fit the display panel.
  • the biometric information sensing of the target object at any position in the display area can be realized by the photosensitive panel.
  • the anti-aliasing imaging element includes a light absorbing wall and a plurality of first light transmissive regions and second light transmissive regions surrounded by the light absorbing walls, each of the photosensitive cells corresponding to at least one of the first a light transmissive area, the second light transmissive area is disposed corresponding to the third light transmissive area.
  • the light absorbing wall comprises a plurality of light absorbing blocks and height blocks arranged in an alternating stack.
  • the light-absorbing wall is formed by stacking the height blocks and the light-absorbing blocks, which speeds up the process of the anti-aliasing imaging element and ensures the anti-aliasing effect of the anti-aliasing imaging element.
  • the pad is made of a transparent material.
  • the first light transmissive region and the second light transmissive region are filled with a transparent material. Filling the transparent material in the first light-transmitting region and the second light-transmitting region not only increases the strength of the anti-aliasing imaging element, but also prevents impurities from entering the first light-transmitting region and the second light-transmitting region to affect the light-transmitting effect.
  • the anti-aliasing imaging element comprises a plurality of layers of light absorbing layers and transparent support layers arranged alternately; the light absorbing layer comprises a plurality of spaced apart light absorbing blocks; the transparent supporting layer is filled with a transparent material Forming, and filling together the interval between the light absorbing blocks; wherein the interval corresponding to the area forms a first light transmitting area, each of the photosensitive cells corresponding to at least one of the first light transmitting areas, the second The light transmissive area is disposed corresponding to the third light transmissive area.
  • the preparation of the anti-aliasing imaging element is made simpler, and the anti-aliasing effect of the anti-aliasing imaging element is ensured.
  • the thickness of each of the transparent support layers is unequal.
  • the thickness of the transparent support layer increases layer by layer.
  • the optical signal outside the preset angle range offset from the vertical direction of the photosensitive panel is prevented from passing through the anti-aliasing imaging element, thereby improving the anti-aliasing effect of the anti-aliasing imaging element.
  • the anti-aliasing imaging element is formed directly on the photosensitive panel; or the anti-aliasing imaging element is separately formed and then disposed on the photosensitive panel.
  • the anti-aliasing imaging element is directly formed on the photosensitive panel, so that the first light-transmitting area of the anti-aliasing imaging element is aligned with the photosensitive unit, which not only improves the sensing accuracy of the photosensitive module, but also does not affect the display device. The display effect.
  • the display device further includes a display driving circuit for driving the plurality of display pixels to emit light for use as a light source when the photosensitive module performs light sensing.
  • the photosensitive module realizes the sensing of the biometric information of the target object by using the optical signal emitted by the display panel, and does not need to additionally set the light source, thereby saving the cost of the display module, and realizing the target of touching or touching the display panel at any position.
  • the object performs biometric information sensing.
  • An embodiment of the present invention provides an electronic device including the display module of any of the above embodiments.
  • the electronic device further includes a protective cover for being touched by a target object when the electronic device performs biometric information sensing.
  • the electronic device further includes a touch sensor for determining a touch area of the target object when the target object contacts the protective cover for the electronic device to be in the Biometric information sensing is performed within the touch area.
  • the touch sensor is either integrated with the protective cover or integrated with a photosensitive panel in the display module or integrated with a display panel in the display module.
  • the electronic device has the display module of any of the above configurations, it has all the advantageous effects of the above display module.
  • FIG. 1 is a schematic diagram of an optical sensing structure applied to an electronic device in the prior art
  • FIG. 2 is a partial structural schematic view of a photosensitive panel according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of optical signals that the anti-aliasing imaging element can pass through in the photosensitive module shown in FIG. 2;
  • FIG. 4 is a partial structural schematic view of an anti-aliasing imaging element according to an embodiment of the present invention.
  • FIG. 5 is a partial schematic structural view of an anti-aliasing imaging element according to another embodiment of the present invention.
  • FIG. 6 is a process of forming an anti-aliasing imaging element according to an embodiment of the present invention.
  • FIG. 7 is a partial structural schematic view of an anti-aliasing imaging element according to still another embodiment of the present invention.
  • FIG. 8 is a partial structural schematic view of a photosensitive module according to another embodiment of the present invention.
  • FIG. 9 is a block diagram showing the structure of a photosensitive device according to an embodiment of the present invention.
  • Figure 10 is a schematic structural view of an embodiment of the photosensitive unit shown in Figure 9;
  • FIG. 11 is a schematic structural view of another embodiment of the photosensitive unit shown in FIG. 9;
  • FIG. 12 is a partial schematic structural view of a display module according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram showing a correspondence relationship between a display area of a display panel and a sensing area of the photosensitive panel according to an embodiment of the present invention
  • FIG. 14 is a partial structural schematic view of a display module according to another embodiment of the present invention.
  • FIG. 15 is a schematic diagram of a front view of a display module applied to an electronic device according to an embodiment of the present invention.
  • Figure 16 is a cross-sectional structural view of the electronic device of Figure 15 taken along line I-I, in which only a partial structure of the electronic device is shown.
  • first and second are used for descriptive purposes only, and It is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” or “second” may include one or more of the described features either explicitly or implicitly. In the description of the present invention, the meaning of “a plurality” is two or more unless specifically and specifically defined otherwise.
  • Contact or “touch” includes direct or indirect contact.
  • the photosensitive module and the display module disclosed in the following are disposed inside the electronic device, such as under the protective cover, and the user's finger indirectly contacts the photosensitive module and the display module through the protective cover.
  • connection is to be understood broadly, and may be, for example, a fixed connection or a Disassembling the connection, or connecting integrally; may be mechanical connection, electrical connection or communication with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or mutual interaction of two elements Role relationship.
  • installation is to be understood broadly, and may be, for example, a fixed connection or a Disassembling the connection, or connecting integrally; may be mechanical connection, electrical connection or communication with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or mutual interaction of two elements Role relationship.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • FIG. 2 illustrates a partial structure of a photosensitive module according to an embodiment of the present invention.
  • the photosensitive module 2 includes a photosensitive device 20 (see FIG. 9) and an anti-aliasing imaging element 28.
  • the photosensitive device 20 further includes a photosensitive panel 200.
  • the photosensitive panel 200 includes a plurality of third transparent regions P1 and non-transmissive regions P2 through which optical signals pass, and a photosensitive unit 22 is disposed in the non-transparent regions P2. .
  • the photosensitive unit 22 is configured to sense an optical signal and convert the sensed optical signal into a corresponding electrical signal.
  • the photosensitive device 20 is further configured to convert the sensed optical signal into an electrical signal, and acquire predetermined biometric information of the target object contacting or approaching the photosensitive panel 200 according to the converted electrical signal.
  • the anti-aliasing imaging element 28 is disposed above the photosensitive panel 200 for preventing aliasing of optical signals received between adjacent photosensitive cells 22. Further, the anti-aliasing imaging element 28 includes a plurality of The first light-transmitting region 282 and the second light-transmitting region 285 are disposed, and the second light-transmitting region 285 is disposed corresponding to the third light-transmitting region P1, and the plurality of photosensitive cells 22 are disposed corresponding to the first light-transmitting region 282. For receiving an optical signal that passes through the first light transmissive region 282.
  • the biometric information of the target object is, for example but not limited to, skin texture information such as fingerprints, palm prints, ear prints, and soles, and other biometric information such as heart rate, blood oxygen concentration, and veins.
  • the target object such as but not limited to a human body, may also be other suitable types of objects.
  • the photosensitive module 2 of the embodiment of the present invention improves the sensing of the photosensitive device 20 by providing the anti-aliasing imaging element 28 on the photosensitive panel 200, so that the photosensitive unit 22 performs light sensing to obtain accurate biometric information. Precision.
  • the photosensitive unit 22 is disposed opposite to the first light-transmitting region 282, so that the light signals passing through the first light-transmitting region 282 are all received by the photosensitive unit 22, which improves the sensing of the photosensitive device 20. Precision.
  • the anti-aliasing imaging element 28 has a light absorbing characteristic that illuminates the optical signal on the anti-aliasing imaging element 28, only an optical signal that is approximately perpendicular to the photosensitive panel 200 can be obtained from the anti-aliasing imaging element.
  • the first light-transmitting region 282 and the second light-transmitting region 285 of 28 pass through, and the remaining light signals are absorbed by the anti-aliasing imaging element 28, and the photosensitive unit 22 is disposed corresponding to the first light-transmitting region 282, so only from the first The light signal that a light transmitting region 282 passes through is received by the photosensitive unit 22. In this way, aliasing of the optical signals received between the adjacent photosensitive cells 22 can be prevented.
  • the optical signal that is approximately perpendicular to the photosensitive panel 200 includes an optical signal that is perpendicular to the photosensitive panel 200 and is offset from the vertical direction of the photosensitive panel 200 by an optical signal within a predetermined angular range.
  • the preset angle range is within ⁇ 20°.
  • Figure 3 illustrates the range of optical signals passing through the anti-aliasing imaging element 28. Due to the light absorption characteristics of the anti-aliasing imaging element 28, only the optical signal between the optical signal L1 and the optical signal L2 can pass through the first light-transmitting region 282 to the photosensitive unit 22, and the remaining optical signals are absorbed by the anti-aliasing imaging element 28. Wall 281 is absorbed.
  • the first transparent region 282 is exemplified by a circular hole. As shown in FIG. 3, the smaller the aperture of the first transparent region 282, the smaller the range of the angle ⁇ of the optical signal passing through the first transparent region 282.
  • the anti-aliasing effect of the anti-aliasing imaging element 28 is better.
  • the anti-aliasing effect of the anti-aliasing imaging element 28 can be improved by the first aperture 282 of the smaller aperture provided by the anti-aliasing imaging element 28.
  • the aperture of the first light-transmitting region 282 of the anti-aliasing imaging element 28 is small, each photosensitive unit 22 will correspond to the plurality of first light-transmitting regions 282, so that the photosensitive unit 22 can sense sufficient light. The signal improves the sensing accuracy of the photosensitive module 2.
  • the anti-aliasing imaging element 28 includes a light absorbing wall 281, and the plurality of first light transmitting regions 282 and the second light transmitting regions 285 are each formed by the light absorbing wall 282.
  • the light absorbing wall 281 is formed of a light absorbing material.
  • the light absorbing material includes a metal oxide, a carbon black paint, a black ink, and the like. Among them, metal oxide
  • the metal in the metal is, for example but not limited to, one or more of chromium (Cr), nickel (Ni), iron (Fe), tantalum (Ta), tungsten (W), titanium (Ti), and molybdenum (Mo).
  • the axial direction of the first light-transmitting region 282 and the second light-transmitting region 285 extends in a direction perpendicular to the photosensitive panel 200 such that the light signal that is incident on the anti-aliasing imaging element 28 is approximately perpendicular to the photosensitive panel 200.
  • the upper optical signal can pass through the first light transmissive region 282 and the second light transmissive region 285, and the remaining optical signals are absorbed by the light absorbing wall 281.
  • FIG. 4 shows the structure of the anti-aliasing imaging element 28 of an embodiment of the present invention.
  • the light absorbing wall 281 has a multi-layer structure, and the light absorbing wall includes a light absorbing block 281a and a height block 281b which are alternately stacked.
  • the light absorbing block 281a is formed of a light absorbing material.
  • the light absorbing material is, for example but not limited to, a metal oxide, a carbon black paint, a black ink, or the like.
  • the metal in the metal oxide is, for example but not limited to, one of chromium (Cr), nickel (Ni), iron (Fe), tantalum (Ta), tungsten (W), titanium (Ti), molybdenum (Mo) or Several.
  • the height block 281b is, for example but not limited to, a transparent layer formed of a transparent material such as a translucent material, a light absorbing material, or the like.
  • the plurality of light absorbing blocks 281a located in the same layer are spaced apart, and the area corresponding to the first space 281c between the light absorbing blocks 281a in the same layer is the first light transmitting area 282, and the light absorbing block 281a The area corresponding to the second interval 281d is the second light transmitting area 285. Further, the plurality of light absorption blocks 281a and the plurality of height blocks 281b of the same layer may be fabricated at one time.
  • the mask is an integrally formed diaphragm, and the diaphragm forms an opening corresponding to the position of the light absorbing block 281a, and the shape and size of the opening are consistent with the shape and size of the light absorbing block 283.
  • the interval of the openings includes a first interval 281c and a second interval 281d.
  • a plurality of spacer blocks 281b of the same layer may be formed by the method of vapor deposition of the mask.
  • the light absorbing block 281a and the height block 281b which are alternately stacked are sequentially formed by vapor deposition on a carrier through the mask, thereby forming the anti-aliasing imaging element 28.
  • the embodiment of the present invention not only speeds up the process of the anti-aliasing imaging element 28, but also ensures the anti-aliasing effect of the anti-aliasing imaging element 28 by the height setting of the padding block 281b. For example, by setting the height of the pad 281b of different layers, it is possible to prevent the optical signal from being shifted by ⁇ 20° from the vertical direction of the photosensitive panel 200 through the pad 281b, thereby improving the sensing accuracy of the photosensitive module 2.
  • the first transparent region 282 and the second transparent region 285 may be filled with a transparent material to increase the strength of the anti-aliasing imaging element 28, and impurities may be prevented from entering the first transparent region 282.
  • the inner and second light transmissive regions 285 affect the light transmission effect.
  • a material having a relatively high light transmittance such as glass, PMMA (acrylic), PC (polycarbonate) or the like may be selected as the transparent material.
  • FIG. 5 illustrates the structure of an anti-aliasing imaging element of another embodiment of the present invention.
  • the anti-aliasing imaging element 28 is a multi-layer structure, and the anti-aliasing imaging element 28 includes alternating layers
  • the light absorbing layer 283 and the transparent supporting layer 284 are stacked; the light absorbing layer 283 includes a plurality of spaced light absorbing blocks 283a. Further, a first interval 283b and a second interval 283c are formed between the plurality of light absorption blocks 283a.
  • the transparent supporting layer 284 is formed by filling a transparent material, and simultaneously fills the first interval 283b and the second interval 283c between the light absorbing blocks 283a.
  • the area corresponding to the first interval 283b is the first light transmission area 282, and the area corresponding to the second interval 283c is the second light transmission area 285.
  • FIG. 6 illustrates a process of preparing an anti-aliasing imaging element according to an embodiment of the present invention.
  • a light absorbing material is first coated on a carrier, and a portion corresponding to the first light transmitting region 282 and the second light transmitting region 285 is engraved on the light absorbing material layer.
  • the etched, unetched portions form a plurality of light absorbing blocks 283a.
  • the etching technique is, for example but not limited to, photolithography, X-ray etching, electron beam etching, and ion beam etching.
  • the etching type may include both dry etching and wet etching.
  • the etched light absorbing block 283 is coated with a transparent material, and the transparent material covers not only the plurality of light absorbing blocks 283a but also the first interval 283b and the second interval 283c between the plurality of light absorbing blocks 283a. Thereby, a transparent support layer 284 is formed. Then, a plurality of light absorbing blocks 283a are formed on the transparent supporting layer 284 in the manner in which the light absorbing layer 283 is formed, and the light absorbing layer 283 and the transparent supporting layer 284 which are alternately stacked in a plurality of layers are sequentially formed, thereby forming the anti-aliasing imaging element 28.
  • the transparent material forming the transparent supporting layer 284 may be selected from materials having a large transmittance, such as glass, PMMA, and PC. (polycarbonate), epoxy resin, and the like.
  • FIG. 7 illustrates the structure of an anti-aliasing imaging element of another embodiment of the present invention.
  • the anti-aliasing imaging element 28 includes a light absorbing layer 283 and a transparent support layer 284 which are alternately stacked, and the thicknesses of the transparent support layers 284 of the different layers are not equal. That is, the values of the thicknesses h1, h2, and h3 in FIG. 7 are not equal.
  • the thickness of the transparent support layer 284 is increased layer by layer, that is, h1 ⁇ h2 ⁇ h3.
  • the optical signal outside the ⁇ 20° offset from the vertical direction of the photosensitive panel can be prevented from passing through the transparent supporting layer 284 between the light absorbing blocks 283a, thereby improving the sensing precision of the photosensitive module 2.
  • the thickness parameter of each layer of the transparent supporting layer 284 and the width and height parameters of the light absorbing block 283a can be differently set and combined in various combinations to improve the sensing accuracy of the photosensitive module 2.
  • the anti-aliasing imaging element 28 is formed directly on the photosensitive panel 200, that is, the carrier when the anti-aliasing imaging element 28 is formed is the photosensitive panel 200 provided with the photosensitive unit 22.
  • the anti-aliasing imaging element 28 can be modified, for example, and then placed on the photosensitive panel 200 provided with the photosensitive unit 22, thereby accelerating the process of the photosensitive module 2.
  • the finger when the finger touches or approaches the photosensitive module 2, if the ambient light is irradiated on the finger, the finger has many organizational structures, such as the epidermis, the bone, Meat, blood Tubes, etc., so some of the light signals in the ambient light will penetrate the fingers, and some of the light signals will be absorbed by the fingers.
  • the light signal penetrating the finger will reach the photosensitive unit 22, and the photosensitive unit 22 not only senses the light signal reflected by the target object, but also senses the light signal of the ambient light penetrating the finger, so that accurate sensing cannot be performed. .
  • FIG. 8 shows the structure of the photosensitive module according to another embodiment of the present invention.
  • the photosensitive module 2 further includes a filter film 29 disposed between the anti-aliasing imaging element 28 and the photosensitive panel 200 and disposed corresponding to the photosensitive unit 22.
  • the filter film is used to filter optical signals other than the preset wavelength band.
  • the anti-aliasing imaging element 28 is disposed between the filter film 29 and the photosensitive panel 200.
  • the filter film 29 is disposed on a side of the anti-aliasing imaging element 28 away from the photosensitive panel 200. .
  • the optical signal outside the predetermined wavelength band of the reflected optical signal is filtered by the filter film 29, thereby improving the sensing accuracy of the photosensitive module 2.
  • the predetermined wavelength band is a wavelength band corresponding to the blue light signal, that is, the filter film 29 filters out optical signals other than the blue light signal.
  • the predetermined band is a band corresponding to the green light signal, that is, the filter film 29 filters out the light signals other than the green light signal.
  • the target object F such as a finger absorbs the weakest red light signal, and the green light signal, and the blue light signal absorbs the strongest. That is, ambient light illuminates the finger, and a large amount of blue light signal is absorbed by the finger, and only a small amount or even no blue light signal penetrates the finger. Therefore, selecting the optical signal of the band other than the blue light signal or the green light signal for filtering can greatly eliminate the interference of the ambient light and improve the sensing accuracy of the photosensitive module 2.
  • the photosensitive panel 200 includes a transparent substrate 26 and a plurality of photosensitive cells 22 formed on the transparent substrate 26 .
  • the transparent substrate 26 is, for example but not limited to, a glass substrate, a plastic substrate, crystal, sapphire or the like.
  • the transparent substrate 26 may be a rigid material or a flexible material such as a flexible film. If the transparent substrate 26 is made of a flexible material, the photosensitive module 2 can be thinned not only in thickness, but also in an electronic device having a curved display.
  • FIG. 9 shows the structure of a photosensitive device according to an embodiment of the present invention.
  • the photosensitive device 20 includes a photosensitive panel 200.
  • the plurality of photosensitive cells 22 are distributed in an array on the transparent substrate 26.
  • the transparent substrate 26 is further formed with a scan line group and a data line group electrically connected to the photosensitive unit 22, and a scan line.
  • the group is for transmitting a scan driving signal to the photosensitive unit 22 to activate the photosensitive unit 22 to perform light sensing
  • the data line group is for outputting an electrical signal generated by the photosensitive unit performing light sensing.
  • the transparent substrate 26 is, for example but not limited to, a silicon substrate, a metal substrate, a printed circuit board, or the like.
  • the photosensitive cells 22 are distributed in an array, such as a matrix distribution. Of course, it can also be other rules. Distributed or irregularly distributed.
  • the scan line group includes a plurality of scan lines 201.
  • the data line group includes a plurality of data lines 202.
  • the plurality of scan lines 201 and the plurality of data lines 202 are disposed to cross each other and disposed between adjacent photosensitive units 22. For example, a plurality of scanning lines G1, G2, ..., Gm are arranged at intervals in the Y direction, and a plurality of data lines S1, S2, ..., Sn are arranged at intervals in the X direction.
  • the plurality of scanning lines 201 and the plurality of data lines 202 are not limited to the vertical arrangement shown in FIG.
  • the scan lines 201 and the data lines 202 at the intersections are separated by an insulating material.
  • the distribution and the number of the scan lines 201 and the data lines 202 are not limited to the above-exemplified embodiments, and the corresponding scan line groups and data lines may be correspondingly arranged according to the structure of the photosensitive unit 22. group.
  • a plurality of scan lines 201 are connected to a photosensitive driving circuit 23, and a plurality of data lines 202 are connected to a signal processing circuit 25.
  • the photosensitive driving circuit 23 is for supplying a corresponding scanning driving signal and transmitting it to the corresponding photosensitive unit 22 through the corresponding scanning line 201 to activate the photosensitive unit 22 to perform light sensing.
  • the photosensitive driving circuit 23 is formed on the transparent substrate 26, and of course, it may be electrically connected to the photosensitive unit 22 through a connecting member (for example, a flexible circuit board), that is, a plurality of scanning lines 201 are connected.
  • the signal processing circuit 25 receives an electrical signal generated by the corresponding photosensitive unit 22 performing light sensing through the data line 202, and acquires biometric information of the target object based on the electrical signal.
  • the photosensitive device 20 including the photosensitive panel 200 includes, in addition to the signal processing circuit 25 and the photosensitive driving circuit 23 described above, a controller 27 for controlling the output of the driving circuit.
  • the scan driving signal such as, but not limited to, progressively activating the photosensitive unit 22 performs light sensing.
  • the controller 27 is further configured to control the signal processing circuit 25 to receive the electrical signal output by the photosensitive unit 22, and after receiving the electrical signals output by all the photosensitive units 22 that perform light sensing, generate biometric information of the target object based on the electrical signals. .
  • the signal processing circuit 25 and the controller 27 are electrically connected to the photosensitive unit 22, for example, through a connector (for example, a flexible circuit board).
  • FIG. 10 illustrates a connection structure of the photosensitive unit 22 of the embodiment with the scan line 201 and the data line 202.
  • the photosensitive unit 22 includes at least one photosensitive device 220 and a switching device 222.
  • the switching device 222 has a control terminal C and two signal terminals, for example, a first signal terminal Sn1 and a second signal terminal Sn2.
  • the control terminal C of the switching device 222 is connected to the scan line 201.
  • the first signal terminal Sn1 of the switching device 222 is connected to a reference signal L via the photosensitive device 220, and the second signal terminal Sn2 of the switching device 222 is connected to the data line 202.
  • the photosensitive unit 22 illustrated in FIG. 10 is for illustrative purposes only and is not limited to other constituent structures of the photosensitive unit 22.
  • the above-mentioned photosensitive device 220 is, for example but not limited to, a photodiode, a phototransistor, a photodiode, Any one or several of a photo resistor or a thin film transistor.
  • a photodiode as an example, a negative voltage is applied across the photodiode.
  • the photodiode receives the optical signal, a photocurrent is generated in a proportional relationship with the optical signal, and the received optical signal is more intense. Larger, the larger the photocurrent generated, the faster the voltage drop on the negative pole of the photodiode.
  • the intensity of the optical signal reflected from different parts of the target object is obtained, and the target is obtained. Biometric information of the object. It can be understood that a plurality of photosensitive devices 220 are provided to increase the photosensitive effect of the photosensitive device 220.
  • the switching device 222 is, for example but not limited to, any one or several of a triode, a MOS transistor, and a thin film transistor.
  • the switching device 222 can also include other types of devices, and the number can also be two, three, and the like.
  • the photosensitive device 220 having high sensitivity to blue or green light signals may also be selected.
  • the light sensing is performed by selecting the photosensitive device 220 having high sensitivity to the blue light signal or the green light signal, so that the photosensitive device 220 is more sensitive to the light of the blue light signal or the green light signal, so the ambient light is also avoided to some extent.
  • the interference caused by the red light signal improves the sensing accuracy of the photosensitive module 2.
  • the gate of the thin film transistor TFT serves as the control terminal C of the switching device 222, and the source and the drain of the thin film transistor TFT correspond to the first signal terminal Sn1 of the switching device 222 and The second signal terminal Sn2.
  • the gate of the thin film transistor TFT is connected to the scanning line 201, the source of the thin film transistor TFT is connected to the negative electrode of the photodiode D1, and the drain of the thin film transistor TFT is connected to the data line 202.
  • the anode of the photodiode D1 is connected to a reference signal L, which is, for example, a ground signal or a negative voltage signal.
  • a driving signal is applied to the gate of the thin film transistor TFT through the scanning line 201 to drive the thin film transistor TFT to be turned on.
  • the data line 202 is connected to a positive voltage signal.
  • the positive voltage signal on the data line 202 is applied to the negative electrode of the photodiode D1 via the thin film transistor TFT. Since the positive electrode of the photodiode D1 is grounded, the photoelectric A reverse voltage is applied across diode D1 such that photodiode D1 is reverse biased, i.e., in operation.
  • the reverse current of the photodiode D1 rapidly increases, thereby causing a change in current on the photodiode D1, which can be obtained from the data line 202. Since the intensity of the optical signal is larger, the reverse current generated is larger. Therefore, according to the current signal acquired on the data line 202, the intensity of the optical signal can be obtained, thereby obtaining the biometric information of the target object.
  • the reference signal L may be a positive voltage signal, a negative voltage signal, a ground signal, or the like. As long as the electrical signal provided on the data line 202 and the reference signal L are applied across the photodiode D1 such that a reverse voltage is formed across the photodiode D1 to perform photo sensing, it is within the scope of protection defined by the present invention.
  • connection manner of the thin film transistor TFT and the photodiode D1 in the photosensitive unit 22 is not limited to the connection mode shown in FIG. 10, and may be other connection methods.
  • FIG. 11 a connection structure of the photosensitive unit 22 and the scanning line 201 and the data line 202 of another embodiment of the present invention is shown.
  • the gate G of the thin film transistor TFT is connected to the scanning line 201
  • the drain D of the thin film transistor TFT is connected to the anode of the photodiode D1
  • the source S of the thin film transistor TFT is connected to the data line 202.
  • the negative terminal of the photodiode D1 is connected to a positive voltage signal.
  • the switching device 222 can be disposed under the photosensitive device 220, or the switching device 222 can be partially overlapped with the photosensitive device 220.
  • the scan line 201 and the data line 202 may also be disposed under the switching device 222.
  • the arrangement of the photosensitive unit 22, the scanning line 201, and the data line 202 can be made more compact, and in the case where the installation area is limited, the photosensitive area of the photosensitive device 220 is increased, thereby enhancing the sensing effect of the photosensitive panel 200.
  • the semiconductor layer and the upper electrode of the photosensitive device 220 may also extend over the switching device 222 to increase the sensing area.
  • the photosensor 220 as a photodiode as an example
  • the anode and the semiconductor layer of the photodiode extend above the switching device 222, covering the switching device 222, and a light shielding layer is further disposed above the region of the anode corresponding to the switching device 222 to prevent the light from illuminating the switching device 222.
  • the cathode of the photodiode is connected to the switching device 222.
  • the cathode is a lower electrode, for example made of a non-transmissive conductive material, such as a metallic material.
  • FIG. 12 shows a partial structure of the display module 1 according to an embodiment of the present invention.
  • the display module 1 includes a display device (not shown) and a photosensitive module 2.
  • the display device in turn includes a display panel 100 for performing image display.
  • the photosensitive module 2 is the photosensitive module 2 of any of the above embodiments, and the photosensitive module 2 is disposed above the display panel 100 for sensing an optical signal to obtain a target object contacting or approaching the display module 1. Predetermine biometric information.
  • the display panel 100 includes a plurality of display pixels 12 with an interval H between adjacent display pixels 12.
  • the photosensitive module 2 includes a photosensitive panel 200. Since the photosensitive panel 200 in the photosensitive module 2 is located above the display panel 100, in order not to affect the display of the display panel 100, the photosensitive panel 200 in the photosensitive module 2 is provided with a third transparent region P1, and the third transparent region P1 is disposed corresponding to the display pixel 12 for the optical signal emitted by the display panel 100 to pass through. In some embodiments, in order to improve the display effect of the display panel, the area of the third light-transmitting region P1 is slightly larger than the area of the display pixel 12.
  • the performance of the switching device 222 is affected, so that the scan line 201 is formed on the substrate 26.
  • the area of the data line 202, the photosensitive device 220, and the switching device 222 becomes the photosensitive panel 200 Non-transparent area.
  • the non-transmissive region is located above the interval H of the display panel 100. Accordingly, the switching device 222 and the photosensitive device 220 are located in the non-transmissive region.
  • the non-transmissive region can also become the third light-transmitting region P1.
  • the scan line 201 and the data line 202 may also be made of a transparent conductive material and located in the third light transmissive area P1. Therefore, in the embodiment of the present invention, the position and size of the third light-transmitting region P1 and the non-light-transmitting region are not strictly limited, and can be flexibly adjusted according to actual conditions.
  • the anti-aliasing imaging element 28 of the photosensitive module 2 and the photosensitive panel 200 are stacked with the display panel 100, that is, the photosensitive panel 200 is located at the anti-aliasing imaging element 28 and the display panel. Between 100.
  • the surface of the photosensitive panel 200 and the display panel 100 are shared by the same substrate.
  • the surface of the display panel 100 that is bonded to the photosensitive panel 100 is a protective substrate, and the photosensitive panel 200 is photosensitive.
  • the unit 22 is directly disposed on the protective substrate.
  • the display panel 100 When the display module 1 is in operation, the display panel 100 emits an optical signal to achieve a corresponding display effect. At this time, if the target object touches or touches the display module 1, the optical signal emitted by the display panel 100 reaches the target object and then reflects, and the reflected optical signal is received by the photosensitive panel 200, and the photosensitive panel 200 receives the received optical signal. Converted to an electrical signal corresponding to the optical signal.
  • the signal processing circuit 25 (please refer to FIG. 9) in the photosensitive module 2 obtains predetermined biometric information of the target object based on the electric signal generated by the photosensitive panel 200.
  • the display device further includes a display driving circuit (not shown) for driving the plurality of display pixels to emit light for use as a light source when the photosensitive module performs light sensing.
  • the display driving circuit may be disposed on the display panel 100 or may be connected to the display pixel 12 through a flexible circuit board.
  • the display device is further configured to perform touch sensing, and the display driving circuit drives the display pixels of the corresponding touch regions to emit light after the display device detects the touch or proximity of the target object.
  • the photosensitive panel 200 is configured to perform biometric information sensing of a target object at an arbitrary position within a display area of the display panel 100.
  • the display panel 100 has a display area 101 and a non-display area 102 defined by the light-emitting areas of all the display pixels 12 of the display panel 100, other than the display area 101.
  • the area is a non-display area 102 for setting a circuit such as a display driving circuit for driving the display pixels 12 or a line bonding area for connecting the flexible circuit boards.
  • the photosensitive panel 200 has a sensing area 203 and a non-sensing area 204 defined by the sensing areas of all the photosensitive cells 22 of the photosensitive panel 200, and the area other than the sensing area 203 is the non-sensing area 204.
  • the non-sensing area 204 is used to set a circuit such as the photosensitive driving circuit 23 that drives the photosensitive unit 22 to perform light sensing or The line bonding area to which the flexible circuit board is connected.
  • the shape of the sensing region 203 is consistent with the shape of the display region 101, and the size of the sensing region 203 is greater than or equal to the size of the display region 101, such that the photosensitive panel 200 can be placed at any position adjacent to or adjacent to the display region 101 of the display panel 100.
  • the area of the photosensitive panel 200 is less than or equal to the area of the display panel 100, and the shape of the photosensitive panel 100 is consistent with the shape of the display panel 100, so that the assembly of the photosensitive panel 200 and the display panel 100 is facilitated.
  • the area of the photosensitive panel 200 may also be larger than the area of the display panel 100.
  • the sensing area 203 of the photosensitive panel 200 may also be smaller than the display area 101 of the display panel 100 to achieve predetermined biometric information of a target object of a local area of the display area 101 of the display panel 100. Sensing.
  • FIG. 14 illustrates a partial structure of a display module according to another embodiment of the present invention.
  • the display pixel 12 includes three display pixels of a red pixel R, a green pixel G, and a blue pixel B, and is not limited to other pixel structures of the display pixel 12.
  • the display pixel may also be a black and white pixel, or a red pixel, a green pixel, and a blue pixel; or a red pixel, a green pixel, a blue pixel, a white pixel; or a red pixel, a green pixel, a blue pixel, and a white pixel.
  • the above-described photosensitive device 220 is disposed in the non-light transmitting region P2.
  • the photosensitive device 220 is made as large as possible, that is, a region other than the switching device 222, the scanning line 201, and the data line 202 of the non-transmissive region P2 is used to form the photosensitive device 220.
  • FIG. 15 shows a structure of an electronic device according to an embodiment of the present invention
  • FIG. 16 shows a cross-sectional structure of the electronic device shown in FIG. 15 along line II, and FIG. 16 only A partial structure of the electronic device is shown.
  • the electronic device is provided with the display module of any one of the above embodiments, which is used for image display of an electronic device and for sensing biometric information of a target object contacting or approaching the electronic device.
  • Electronic devices such as, but not limited to, suitable types of electronic products such as consumer electronics, home electronics, vehicle-mounted electronic products, and financial terminal products.
  • consumer electronic products such as mobile phones, tablets, notebook computers, desktop monitors, computer integrated machines.
  • Home-based electronic products such as smart door locks, TVs, refrigerators, wearable devices, etc.
  • Vehicle-mounted electronic products such as car navigation systems, car DVDs, etc.
  • Financial terminal products such as ATM machines, terminals for self-service business, etc.
  • the electronic device shown in FIG. 15 is exemplified by a mobile terminal type mobile terminal.
  • the above display module is also applicable to other suitable electronic products, and is not limited to mobile phone type mobile terminals.
  • a front surface of the mobile terminal 3 is provided with a display panel 100, and a protective cover 300 is disposed above the display panel 100.
  • the screen of the display panel 100 is relatively high, for example, 80% or more.
  • the screen ratio refers to the ratio of the display area 101 of the display panel 100 to the front area of the mobile terminal 3.
  • the photosensitive panel 200 is disposed above the display panel 100 and located under the protective cover 300.
  • the photosensitive panel 200 is for sensing predetermined biometric information of a target object that contacts or approaches an arbitrary position of the display area 101 of the display panel 100.
  • the display panel 100 When the mobile terminal 3 is in a bright screen state and is in the biometric information sensing mode, the display panel 100 emits an optical signal.
  • the photosensitive panel 200 receives the optical signal reflected by the object, converts the received optical signal into a corresponding electrical signal, and acquires predetermined biometric information of the object according to the electrical signal. For example, fingerprint image information.
  • the photosensitive panel 200 can realize sensing of a target object contacting or approaching an arbitrary position of the display area 101.
  • the photosensitive panel is attached to the display panel, and the optical signal emitted by the display panel is used to realize the sensing of the biometric information of the target object, and no additional light source is needed, thereby saving the cost of the electronic device and achieving the contact.
  • the target object at any position in the display area of the display panel is subjected to biometric information sensing.
  • the photosensitive module in the display module can be independently fabricated and assembled with the display device, thereby accelerating the preparation of the electronic device.
  • the optical signals sensed between the adjacent photosensitive cells may be aliased, thereby causing the acquired sensing information to be blurred, so the embodiment of the present invention passes
  • the anti-aliasing imaging element is arranged to prevent aliasing of the optical signals received by the adjacent photosensitive units, thereby improving the sensing accuracy of the photosensitive module.
  • the photosensitive panel is located above the display panel, so the light signal reflected by the target object directly reaches the photosensitive panel, thereby avoiding interference of other substances during the transmission of the optical signal, and improving the sensing precision of the photosensitive module.
  • the electronic device further includes a touch sensor (not shown) for determining a touch area of the target object for electronic when a target object contacts the protective cover The device performs biometric information sensing within the touch area.
  • the touch sensor is either integrated with the protective cover 300 or integrated with the photosensitive panel 200 or integrated with the display panel 100.
  • the integrated touch sensor not only realizes the touch detection of the target object, but also reduces the thickness of the electronic device, which is beneficial to the development of the electronic device in the direction of thinning and thinning.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative weight. Essential or implicit indication of the number of technical features indicated. Thus, features defining “first” and “second” may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

Abstract

一种显示模组（1）以及电子设备。显示模组（1）包括：显示装置，包括一显示面板（100），用于执行图像显示；感光模组（2），设置于显示面板（100）上方，包括一感光面板（200）以及位于感光面板（200）上方的抗混叠成像元件（28），用于感测光信号，以获取接触或接近显示模组（1）的目标物体的预定生物特征信息；感光面板（200）包括供显示面板（100）发出的光信号穿过的第三透光区域。电子设备包括显示模组（1）。

Description

显示模组及电子设备 技术领域
本实用新型涉及一种感测生物特征信息的显示模组及电子设备。
背景技术
目前，生物信息传感器，尤其是指纹识别传感器，已逐渐成为移动终端等电子产品的标配组件。由于光学式指纹识别传感器比电容式指纹识别传感器具有更强的穿透能力，因此有人提出一种应用于移动终端的光学式指纹识别模组。如图1所示，该光学式指纹识别模组包括光学式指纹传感器400和光源402。其中，该光学式指纹传感器400设置于移动终端的保护盖板401下方。该光源402临近该光学式指纹识别传感器400的一侧设置。当用户的手指F接触保护盖板401时，光源402发出的光信号穿过保护盖板401并到达手指F，经过手指F的谷和脊的反射后，被光学式指纹识别传感器400接收，并形成手指F的指纹图像。
然，上述光学指纹识别模组只能局限设置在移动终端的预定区域，例如移动终端的非显示区内，必须接触该预定区域才能进行指纹识别，使用仍然受限。因此有必要提出一种可设置于显示区内，且实现显示区内任意区域的指纹识别的结构。
实用新型内容
本实用新型实施方式旨在至少解决现有技术中存在的技术问题之一。为此，本实用新型实施方式需要提供一种显示模组及电子设备。
本实用新型实施方式的一种显示模组，包括：
显示装置，包括一显示面板，用于执行图像显示；
感光模组，设置于所述显示面板上方，包括一感光面板以及位于所述感光面板上方的抗混叠成像元件，用于感测光信号，以获取接触或接近所述显示模组的目标物体的预定生物特征信息；所述感光面板包括供显示面板发出的光信号穿过的第三透光区域。
本实用新型实施方式的显示模组中，具有如下优点：
第一，将感光模组位于显示面板上方，因此经目标物体反射回来的光信号直接到达感光面板，从而避免了光信号传输过程中其他物质的干涉，提高了感光模组的感测精度。
第二，本实用新型实施方式通过设置抗混叠成像元件，防止了感光面板接收的光信号产生混叠，提高了感光模组的感测精度。
第三，感光模组可以独立制成后，再进行显示模组的组装，从而加快了显示模组的制备。
在某些实施方式中，所述显示面板包括多个显示像素，所述显示像素与所述第三透光区域对应设置。如此使得感光模组的设置不影响显示装置的显示效果。
在某些实施方式中，相邻的所述显示像素之间形成间隔，所述感光面板包括透明基板以及设置在所述透明基板上的多个感光单元，且所述感光单元位于所述间隔上方。通过感光单元设置于显示像素之间的间隔上方，从而提高了显示装置的显示效果。
在某些实施方式中，所述感光单元包括至少一感光器件和至少一开关器件，所述开关器件用于接收一扫描驱动信号，并在接收到所述扫描驱动信号后导通，将一参考信号施加于所述感光器件，驱动所述感光器件工作。
在某些实施方式中，所述开关器件位于所述感光器件下方。如此，使得开关器件和感光器件的设置更加紧凑。
在某些实施方式中，所述感光器件选择对蓝色光信号或绿色光信号的感光灵敏度高的感光器件。
在某些实施方式中，所述感光模组进一步包括滤光膜，所述滤光膜设于所述感光面板上，用于将预设波段以外的光信号进行过滤。通过滤光膜的设置，消除了环境光的干扰，提高了感光模组的感测精度。
在某些实施方式中，所述感光面板的大小形状与所述显示面板适配。通过感光面板，能实现显示区内任意位置的目标物体的生物特征信息感测。
在某些实施方式中，所述抗混叠成像元件包括吸光墙以及由吸光墙围成的多个第一透光区域和第二透光区域，每一所述感光单元对应至少一所述第一透光区域，所述第二透光区域与所述第三透光区域对应设置。
在某些实施方式中，所述吸光墙包括多个交替层叠设置的吸光块和垫高块。通过垫高块与吸光块层叠设置形成吸光墙，加快了抗混叠成像元件的制程，而且保证了抗混叠成像元件的抗混叠效果。
在某些实施方式中，所述垫高块由透明材料制成。
在某些实施方式中，所述第一透光区域和第二透光区域内填充透明材料。通过第一透光区域和第二透光区域内填充透明材料，不但增加抗混叠成像元件的强度，也可避免杂质进入第一透光区域和第二透光区域内而影响透光效果。
在某些实施方式中，所述抗混叠成像元件包括多层交替层叠设置的吸光层和透明支撑层；所述吸光层包括多个间隔设置的吸光块；所述透明支撑层由透明材料填充形成，且一并填充所述吸光块之间的间隔；其中所述间隔对应的区域形成第一透光区域，每一所述感光单元对应至少一所述第一透光区域，所述第二透光区域与所述第三透光区域对应设置。
通过交替层叠设置的吸光层和透明支撑层，使得抗混叠成像元件的制备更加简单，且保证了抗混叠成像元件的抗混叠效果。
在某些实施方式中，所述每一层透明支撑层的厚度不相等。
在某些实施方式中，所述透明支撑层的厚度逐层增大。
通过对透明支撑层的厚度设置，避免了相对感光面板垂直方向偏移预设角度范围外的光信号穿过抗混叠成像元件，从而提高了抗混叠成像元件的抗混叠效果。
在某些实施方式中，所述抗混叠成像元件在所述感光面板上直接形成；或者，所述抗混叠成像元件独立形成后，再设置于所述感光面板上。通过抗混叠成像元件直接在感光面板上形成，如此可以使得抗混叠成像元件的第一透光区域与感光单元对齐设置，既提高了感光模组的感测精度，而且还不影响显示装置的显示效果。
在某些实施方式中，所述显示装置进一步包括显示驱动电路，用于驱动所述多个显示像素发光，以用作所述感光模组进行光感测时的光源。感光模组利用显示面板发出的光信号实现目标物体的生物特征信息感测，不需要额外设置光源，从而不但节省了显示模组的成本，而且还实现了对接触或触摸显示面板任意位置的目标物体进行生物特征信息感测。
本实用新型实施方式提供一种电子设备，包括上述任意一实施方式的显示模组。
在某些实施方式中，所述电子设备进一步包括一保护盖板，在所述电子设备执行生物特征信息感测时，用于供一目标物体触摸。
在某些实施方式中，所述电子设备进一步包括一触摸传感器，所述触摸传感器用于在一目标物体接触所述保护盖板时，确定所述目标物体的触摸区域，以供电子设备在所述触摸区域内执行生物特征信息感测。
在某些实施方式中，所述触摸传感器或者与所述保护盖板集成，或者与所述显示模组中的感光面板集成，或者与所述显示模组中的显示面板集成。
该电子设备由于具有上述任一结构的显示模组，因此具有上述显示模组的所有有益效果。
本实用新型实施方式的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本实用新型实施方式的实践了解到。
附图说明
本实用新型实施方式的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1是现有技术的一种应用于电子设备的光学式感测结构的示意图；
图2是本实用新型一实施方式的感光面板的局部结构示意图；
图3是图2示出的感光模组中抗混叠成像元件能穿过的光信号示意图；
图4是本实用新型一实施方式的抗混叠成像元件的局部结构示意图；
图5是本实用新型另一实施方式的抗混叠成像元件的局部结构示意图；
图6是本实用新型一实施方式的抗混叠成像元件的形成过程；
图7是本实用新型又一实施方式的抗混叠成像元件的局部结构示意图；
图8是本实用新型另一实施方式的感光模组的局部结构示意图；
图9是本实用新型一实施方式的感光装置的结构框图；
图10是图9所示的感光单元一实施方式的结构示意图；
图11是图9所示的感光单元另一实施方式的结构示意图；
图12是本实用新型一实施方式的显示模组的局部结构示意图；
图13是本实用新型一实施方式的显示面板的显示区域和感光面板的感测区域的对应关系示意图；
图14是本实用新型另一实施方式的显示模组的局部结构示意图；
图15是本实用新型一实施方式的显示模组应用于电子设备的正面结构示意图；
图16是图15中的电子设备沿I-I线的剖面结构示意图，其中仅示出了电子设备的部分结构。
具体实施方式
下面详细描述本实用新型的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本实用新型，而不能理解为对本实用新型的限制。
在本实用新型的描述中，需要理解的是，术语“第一”、“第二”仅用于描述目的，而 不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本实用新型的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。“接触”或“触摸”包括直接接触或间接接触。例如，下文中揭示的感光模组、显示模组，其被设置在电子设备的内部，例如保护盖板的下方，则用户手指通过保护盖板间接接触该感光模组以及显示模组。
在本实用新型的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通信；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
下文的公开提供了许多不同的实施方式或例子用来实现本实用新型的不同结构。为了简化本实用新型的公开，下文中对特定例子的部件和设定进行描述。当然，它们仅仅为示例，并且目的不在于限制本实用新型。此外，本实用新型可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设定之间的关系。此外，本实用新型提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
进一步地，所描述的特征、结构可以以任何合适的方式结合在一个或更多实施方式中。在下面的描述中，提供许多具体细节从而给出对本实用新型的实施方式的充分理解。然而，本领域技术人员应意识到，没有所述特定细节中的一个或更多，或者采用其它的结构、组元等，也可以实践本实用新型的技术方案。在其它情况下，不详细示出或描述公知结构或者操作以避免模糊本实用新型。
在某些实施方式中，请参照图2，图2示出了本实用新型一实施方式的感光模组的局部结构。该感光模组2包括感光装置20(参见图9)和抗混叠成像元件28。其中，感光装置20又包括一感光面板200，该感光面板200包括供光信号穿过的多个第三透光区域P1以及非透光区域P2，且非透光区域P2内设有感光单元22。该感光单元22用于感测光信号，并将感测到的光信号转换为相应的电信号。感光装置20进一步用于将感测到的光信号转换为电信号，并根据转换后的电信号获取接触或接近该感光面板200的目标物体的预定生物特征信息。抗混叠成像元件28设置于感光面板200上方，用于防止相邻的感光单元22之间接收到的光信号产生混叠。进一步地，抗混叠成像元件28包括多个供 光信号穿过的第一透光区域282和第二透光区域285，第二透光区域285与第三透光区域P1对应设置，多个感光单元22与第一透光区域282对应设置，用于接收穿过该第一透光区域282的光信号。
上述目标物体的生物特征信息例如但不限于指纹、掌纹、耳纹、脚掌等皮肤纹路信息，以及心率、血氧浓度、静脉等其他生物特征信息。目标物体例如但不限于人体，也可以为其他合适类型的物体。
本实用新型实施方式的感光模组2通过在感光面板200上设置抗混叠成像元件28，从而使得感光单元22执行光感测后获得准确的生物特征信息，从而提高了感光装置20的感测精度。
在某些实施方式中，感光单元22与第一透光区域282正对设置，如此能保证穿过第一透光区域282的光信号全部被感光单元22接收，提高了感光装置20的感测精度。
在某些实施方式中，抗混叠成像元件28具有吸光特性，照射到抗混叠成像元件28上的光信号中，只有与所述感光面板200近似垂直的光信号才能从抗混叠成像元件28的第一透光区域282和第二透光区域285穿过，其余的光信号均被抗混叠成像元件28吸收，而感光单元22对应第一透光区域282设置，因此仅有从第一透光区域282穿过的光信号被感光单元22接收。如此，可以防止相邻的感光单元22之间接收的光信号产生混叠。需要说明的是，与感光面板200近似垂直的光信号包括垂直于所述感光面板200的光信号，以及相对所述感光面板200的垂直方向偏移预设角度范围内的光信号。该预设角度范围为±20°内。
在某些实施方式中，结合参照图2和图3，图3示出了穿过抗混叠成像元件28的光信号范围。由于抗混叠成像元件28的吸光特性，只有光信号L1和光信号L2之间的光信号可以通过第一透光区域282到达感光单元22，其余的光信号均被抗混叠成像元件28的吸光墙281吸收。可选地，该第一透光区域282以圆孔为例，由图3可知，第一透光区域282的孔径越小，通过第一透光区域282的光信号的角度α的范围越小，因此抗混叠成像元件28的抗混叠效果越好。如此，通过抗混叠成像元件28设置的较小孔径的第一透光区域282，能提高抗混叠成像元件28的抗混叠效果。另外，由于抗混叠成像元件28的第一透光区域282的孔径较小，因此每一感光单元22将对应多个第一透光区域282，从而使得感光单元22能感测到足够的光信号，提高了感光模组2的感测精度。
在某些实施方式中，请继续参照图2，抗混叠成像元件28包括吸光墙281，上述多个第一透光区域282和第二透光区域285均由吸光墙282围合形成。该吸光墙281由吸光材料形成。该吸光材料包括金属氧化物、炭黑涂料、黑色油墨等。其中，金属氧化物 中的金属例如但不限于铬(Cr)、镍(Ni)、铁(Fe)、钽(Ta)、钨(W)、钛(Ti)、钼(Mo)的一种或几种。第一透光区域282和第二透光区域285的轴向延伸方向为与感光面板200垂直的方向，以使照射到抗混叠成像元件28的光信号中，与感光面板200近似垂直的方向上的光信号可以穿过第一透光区域282和第二透光区域285，其余的光信号均被吸光墙281吸收。
进一步地，请参照图4，图4示出了本实用新型一实施方式的抗混叠成像元件28的结构。吸光墙281为多层结构，且该吸光墙包括交替层叠设置的吸光块281a和垫高块281b。一实施方式中，该吸光块281a由吸光材料形成。该吸光材料例如但不限于金属氧化物、炭黑涂料、黑色油墨等。其中，金属氧化物中的金属例如但不限于铬(Cr)、镍(Ni)、铁(Fe)、钽(Ta)、钨(W)、钛(Ti)、钼(Mo)的一种或几种。垫高块281b例如但不限于由透明材料形成的透明层，例如半透明材料、吸光材料等。
在某些实施方式中，位于同一层的多个吸光块281a间隔设置，且该同一层中各吸光块281a之间的第一间隔281c所对应的区域为第一透光区域282，吸光块281a之间的第二间隔281d对应的区域为第二透光区域285。进一步地，同一层的多个吸光块281a以及多个垫高块281b可以一次制成。具体地，通过提供一掩膜，所述掩膜为一体成型的膜片，且该膜片对应吸光块281a的位置形成开孔，且该开孔的形状与大小与吸光块283的形状大小一致，且开孔的间隔包括第一间隔281c和第二间隔281d。同理，同一层地多个垫高块281b也可以通过该掩膜蒸镀的方法形成。如此通过该掩膜依次在一承载物上蒸镀形成交替层叠设置的吸光块281a以及垫高块281b，从而形成抗混叠成像元件28。
本实用新型实施方式通过垫高块281b的设置，不但加快了抗混叠成像元件28的制程，而且通过垫高块281b的高度设置，能保证抗混叠成像元件28的抗混叠效果。例如，设置不同层的垫高块281b的高度，可以避免相对感光面板200垂直方向偏移±20°以外的光信号穿过垫高块281b，从而提高了感光模组2的感测精度。
在某些实施方式中，上述第一透光区域282和第二透光区域285内均可以填充透明材料，以增加抗混叠成像元件28的强度，也可避免杂质进入第一透光区域282内和第二透光区域285内而影响透光效果。为了保证第一透光区域282和第二透光区域285的透光效果，透明材料可以选用透光率较大的材料，例如玻璃、PMMA(亚克力)、PC(聚碳酸酯)等等。
在某些实施方式中，请参照图5，图5示出了本实用新型另一实施方式的抗混叠成像元件的结构。该抗混叠成像元件28为多层结构，且该抗混叠成像元件28包括交替层 叠设置的吸光层283和透明支撑层284；所述吸光层283包括多个间隔设置的吸光块283a。而且，该多个吸光块283a之间形成第一间隔283b和第二间隔283c。所述透明支撑层284由透明材料填充形成，且一并填充所述吸光块283a之间的第一间隔283b和第二间隔283c。其中，第一间隔283b对应的区域为第一透光区域282，第二间隔283c对应的区域为第二透光区域285。
进一步地，请参照图6，图6示出了本实用新型一实施方式的抗混叠成像元件的制备过程。具体地，在制备抗混叠成像元件28时，在一承载物上先涂覆一层吸光材料，并在吸光材料层上将第一透光区域282和第二透光区域285对应的部分刻蚀掉，未被蚀刻的部分形成多个吸光块283a。该刻蚀技术例如但不局限于光刻蚀、X射线刻蚀、电子束刻蚀和离子束刻蚀。而且刻蚀类型可包括干法刻蚀和湿法刻蚀两种。然后，在蚀刻后的吸光块283上涂覆一层透明材料，且该透明材料不但覆盖多个吸光块283a，还一并填充多个吸光块283a之间的第一间隔283b和第二间隔283c，从而形成透明支撑层284。然后，按照吸光层283的形成方式在透明支撑层284上形成多个吸光块283a，依次类推形成多层交替层叠的吸光层283和透明支撑层284，从而形成抗混叠成像元件28。
进一步地，为了保证第一透光区域282和第二透光区域285的透光效果，形成透明支撑层284的透明材料可以选用透光率较大的材料，例如玻璃、PMMA(亚克力)、PC(聚碳酸酯)、环氧树脂等。
在某些实施方式中，请参照图7，图7示出了本实用新型另一实施方式的抗混叠成像元件的结构。该抗混叠成像元件28包括交替层叠设置的吸光层283和透明支撑层284，且不同层的透明支撑层284的厚度不相等。即图7中厚度h1、h2和h3的值不相等。可选地，该透明支撑层284的厚度逐层增大，即h1<h2<h3。如此可以避免相对感光面板垂直方向偏移±20°以外的光信号穿过吸光块283a之间的透明支撑层284，从而提高了感光模组2的感测精度。需要说明的是，每层透明支撑层284的厚度参数，以及吸光块283a的宽度和高度参数，可进行不同的设置以及多种设置组合方式，来提高感光模组2的感测精度。
在某些实施方式中，抗混叠成像元件28直接形成于感光面板200上，即上述抗混叠成像元件28形成时的承载物为设有感光单元22的感光面板200。然，可变更地，该抗混叠成像元件28例如独立制成后再设置于设有感光单元22的感光面板200上，从而加快了感光模组2的制程。
在某些实施方式中，以目标物体为手指等生物体为例，当手指接触或接近感光模组2时，若有环境光照射于手指上，而手指具有很多组织结构，例如表皮、骨头、肉、血 管等，因此环境光中的部分光信号会穿透手指，部分光信号则被手指吸收。穿透手指的光信号将到达感光单元22，此时感光单元22不但感测到经目标物体反射回来的光信号，还感测到环境光穿透手指的光信号，如此无法进行准确地感测。因此，为了避免环境光影响感光单元22对目标物体的感测，请参照图8，图8示出了本实用新型另一实施方式的感光模组的结构。该感光模组2进一步包括滤光膜29，所述滤光膜29设置在所述抗混叠成像元件28与所述感光面板200之间，且对应感光单元22设置。该滤光膜用于将预设波段以外的光信号进行过滤。然，可变更地，该抗混叠成像元件28设置在所述滤光膜29与所述感光面板200之间，例如滤光膜29设置于抗混叠成像元件28远离感光面板200的一侧。
本实用新型实施方式通过该滤光膜29，将反射回来的光信号中预设波段以外的光信号滤除，从而提高了感光模组2的感测精度。
在某些实施方式中，预设波段为蓝色光信号对应的波段，即滤光膜29将蓝色光信号以外的光信号滤除。
在某些实施方式中，预设波段为绿色光信号对应的波段，即滤光膜29将绿色光信号以外的光信号滤除。
在环境光的红色光信号、蓝色光信号以及绿色光信号中，手指等目标物体F对红色光信号的吸收最弱，其次是绿色光信号，对蓝色光信号的吸收最强。即环境光照射于手指上，大量的蓝色光信号被手指吸收，只有少量的，甚至没有蓝色光信号穿透手指。因此，选择蓝色光信号或绿色光信号以外波段的光信号进行过滤，可以大大消除环境光的干扰，提高感光模组2的感测精度。
请继续参照图2，该感光面板200包括透明基板26以及形成在透明基板26上的多个感光单元22。透明基板26例如但不限于玻璃基板、塑料基板、水晶、蓝宝石等，另外，该透明基板26可以为刚性材质，也可以为柔性材质，例如柔性薄膜。若透明基板26为柔性材质，则该感光模组2不但厚度变薄，而且还可以适用于具有曲面显示屏的电子设备中。
在某些实施方式中，请参照图9，图9示出了本实用新型一实施方式的感光装置的结构。该感光装置20包括感光面板200，多个感光单元22呈阵列分布于透明基板26上，而且透明基板26上例如还形成有与感光单元22电性连接的扫描线组和数据线组，扫描线组用于传输扫描驱动信号给感光单元22，以激活感光单元22执行光感测，数据线组用于将感光单元执行光感测而产生的电信号输出。该透明基板26例如但不限于硅基板、金属基板、印刷电路板等。
具体地，感光单元22呈阵列分布，例如矩阵分布。当然，也可以为其他规则方式 分布或非规则方式分布。扫描线组包括多条扫描线201，数据线组包括多条数据线202，多条扫描线201与多条数据线202相互交叉设置，且设置在相邻的感光单元22之间。例如，多条扫描线G1、G2…Gm沿Y方向间隔布设，多条数据线S1、S2…Sn沿X方向间隔布设。然，可变更地，该多条扫描线201与多条数据线202不限定图9中示出的垂直设置，也可以呈一定角度的设置，例如30°、60°等。另外，由于扫描线201和数据线202的导电性，因此处于交叉位置的扫描线201和数据线202之间通过绝缘材料进行隔离。
需要说明的是，上述扫描线201和数据线202的分布以及数量的设置并不局限于上述例举的实施方式，可以根据感光单元22的结构的不同而对应设置相应的扫描线组和数据线组。
进一步地，多条扫描线201均连接一感光驱动电路23，多条数据线202均连接一信号处理电路25。感光驱动电路23用于提供相应的扫描驱动信号，并通过对应的扫描线201传输给相应的感光单元22，以激活该感光单元22执行光感测。该感光驱动电路23形成在透明基板26上，当然也可以通过连接件(例如，柔性电路板)与感光单元22电性连接，即连接多条扫描线201。信号处理电路25通过数据线202接收相应的感光单元22执行光感测而产生的电信号，并根据该电信号来获取目标物体的生物特征信息。
在某些实施方式中，包括该感光面板200的感光装置20除了包括上述的信号处理电路25、感光驱动电路23之外，还包括一控制器27，该控制器27用于控制驱动电路输出相应的扫描驱动信号，例如但不局限于逐行激活感光单元22执行光感测。该控制器27还用于控制信号处理电路25接收感光单元22输出的电信号，并在接收执行光感测的所有感光单元22输出的电信号后，根据该电信号生成目标物体的生物特征信息。
进一步地，上述信号处理电路25以及控制器27例如通过连接件(例如，柔性电路板)与感光单元22电性连接。
在某些实施方式中，请参照图10，图10示出了一实施方式的感光单元22与扫描线201和数据线202的连接结构。该感光单元22包括至少一感光器件220和开关器件222。该开关器件222具有一控制端C以及两信号端，例如为第一信号端Sn1和第二信号端Sn2。其中，开关器件222的控制端C与扫描线201连接，开关器件222的第一信号端Sn1经感光器件220连接一参考信号L，开关器件222的第二信号端Sn2与数据线202连接。需要说明的是，图10示出的感光单元22仅用于举例说明，并不限于感光单元22的其他组成结构。
具体地，上述感光器件220例如但不限于光敏二极管、光敏三极管、光电二极管、 光电阻、薄膜晶体管的任意一个或几个。以光电二极管为例，通过在光电二极管的两端施加负向电压，此时，若光电二极管接收到光信号时，将产生与光信号成一定比例关系的光电流，接收到的光信号强度越大，产生的光电流则越大，光电二极管负极上的电压下降的速度也就越快，因此通过采集光电二极管负极上的电压信号，从而获得目标物体不同部位反射的光信号强度，进而获得目标物体的生物特征信息。可以理解的是，若要增大感光器件220的感光效果，则设置多个感光器件220。
进一步地，开关器件222例如但不限于三极管、MOS管、薄膜晶体管中的任意一个或几个。当然，该开关器件222也可以包括其他类型的器件，数量也可以为2个、3个等。
在某些实施方式中，为了进一步提高感光模组2的感测精度，也可以选择对蓝色或绿色光信号的感光灵敏度高的感光器件220。通过选择对蓝色光信号或绿色光信号的感光灵敏度高的感光器件220执行光感测，使得该感光器件220对蓝色光信号或绿色光信号的感光更灵敏，因此一定程度上也避免了环境光中红色光信号造成的干扰，从而提高了感光模组2的感测精度。
以图10示出的感光单元22结构为例，该薄膜晶体管TFT的栅极作为开关器件222的控制端C，薄膜晶体管TFT的源极和漏极对应作为开关器件222的第一信号端Sn1和第二信号端Sn2。薄膜晶体管TFT的栅极与扫描线201连接，薄膜晶体管TFT的源极与光电二极管D1的负极连接，薄膜晶体管TFT的漏极与数据线202连接。光电二极管D1的正极连接参考信号L，该参考信号L例如为地信号或负电压信号。
在上述感光单元22执行光感测时，通过扫描线201给薄膜晶体管TFT的栅极施加一驱动信号，以驱动薄膜晶体管TFT导通。此时，数据线202连接一正电压信号，当薄膜晶体管TFT导通后，数据线202上的正电压信号经薄膜晶体管TFT施加至光电二极管D1的负极，由于光电二极管D1的正极接地，因此光电二极管D1两端将施加一反向电压，使得光电二极管D1处于反向偏置，即处于工作状态。此时，当有光信号照射到该光电二极管D1时，光电二极管D1的反向电流迅速增大，从而引起光电二极管D1上的电流变化，该变化的电流可以从数据线202上获取。由于光信号的强度越大，产生的反向电流也越大，因此根据数据线202上获取到的电流信号，可以获得光信号的强度，进而获得目标物体的生物特征信息。
在某些实施方式中，上述参考信号L可以为正电压信号、负电压信号、地信号等。只要数据线202上提供的电信号与该参考信号L施加在光电二极管D1两端，使得光电二极管D1两端形成反向电压，以执行光感测，均在本实用新型限定的保护范围内。
可以理解的是，上述感光单元22中薄膜晶体管TFT和光电二极管D1的连接方式并不局限于图10示出的连接方式，也可以为其他连接方式。例如，如图11所示，示出了本实用新型另一一实施方式的感光单元22与扫描线201和数据线202的连接结构。薄膜晶体管TFT的栅极G与扫描线201连接，薄膜晶体管TFT的漏极D与光电二极管D1的正极连接，薄膜晶体管TFT的源极S与数据线202连接。光电二极管D1的负极连接正电压信号。
在某些实施方式中，开关器件222可以设置在感光器件220的下方，或者开关器件222与感光器件220部分重叠设置。扫描线201和数据线202也可以设置于开关器件222下方。如此可以使得感光单元22、扫描线201和数据线202的设置更加紧凑，而且在设置面积有限的情况下，增大感光器件220的感光面积，从而加强了感光面板200的感测效果。
具体地，在某些实施方式中，所述感光器件220的半导体层以及上电极也可延伸到开关器件222的上方，以提高感测面积。以感光器件220为光电二极管为例，光电二极管的阳极和半导体层延伸到开关器件222的上方，覆盖开关器件222，阳极对应开关器件222的区域上方进一步设置遮光层，以防光线照射开关器件222。光电二极管的阴极与开关器件222连接。所述阴极为下电极，例如由非透光的导电材料制成，所述非透光的导电材料例如为金属材料。
请参照图12，图12示出了本实用新型一实施方式的显示模组1的局部结构。该显示模组1包括一显示装置(图中未示出)和感光模组2。该显示装置又包括一显示面板100，用于执行图像显示。感光模组2为上述任一实施方式的感光模组2，且该感光模组2设置在显示面板100上方，用于感测光信号，以获取接触或接近该显示模组1的目标物体的预定生物特征信息。
具体地，显示面板100包括多个显示像素12，相邻的显示像素12之间具有间隔H。感光模组2包括一感光面板200。由于感光模组2中的感光面板200位于显示面板100上方，因此为了不影响显示面板100的显示，感光模组2中的感光面板200设有第三透光区域P1，该第三透光区域P1与显示像素12对应设置，以供显示面板100发出的光信号穿过。在某些实施方式中，为了提高显示面板的显示效果，第三透光区域P1的面积略大于显示像素12的面积。
另外，由于基板26上的扫描线201、数据线202、感光器件220的不透光特性，而且为了避免光信号照射到开关器件222而影响开关器件222的性能，因此基板26上形成扫描线201、数据线202、感光器件220、和开关器件222的区域成为感光面板200 的非透光区域。该非透光区域位于显示面板100的间隔H上方。相应地，开关器件222和感光器件220位于非透光区域内。可以理解的是，若感光面板200上设置的部件能实现透光或者省略了某些不透光结构的部件，则该非透光区域也可以变成第三透光区域P1。例如，在某些实施方式中，所述扫描线201和数据线202也可为由透明导电材料制成，位于第三透光区域P1。因此，本实用新型实施方式中，第三透光区域P1和非透光区域的位置和大小没有严格的限定，可根据实际情况而灵活调整。
在某些实施方式中，继续参照图12，该感光模组2中的抗混叠成像元件28与感光面板200与显示面板100层叠设置，即感光面板200位于抗混叠成像元件28和显示面板100之间。
在某些实施方式中，所述感光面板200与显示面板100相互贴合的一面共用同一个基板，例如显示面板100与感光面板100贴合的一面为一保护基板，则感光面板200中的感光单元22直接设置于保护基板上。通过感光面板200与显示面板100共用一个基板，即节省了基板26，从而减小了显示模组的厚度。
显示模组1工作时，显示面板100发出光信号，以实现相应的显示效果。此时，若有目标物体接触或触摸该显示模组1，显示面板100发出的光信号到达目标物体后发生反射，反射回来的光信号被感光面板200接收，感光面板200将接收到的光信号转换为与光信号对应的电信号。感光模组2中的信号处理电路25(请参照图9)根据感光面板200产生的电信号，获得目标物体的预定生物特征信息。
进一步地，显示装置进一步包括显示驱动电路(图中未示出)，用于驱动该多个显示像素发光，以用作所述感光模组进行光感测时的光源。显示驱动电路可以设置于显示面板100上，也可以通过柔性电路板与显示像素12连接。
进一步地，显示装置进一步用于执行触摸感测，当所述显示装置检测到目标物体的触摸或接近之后，所述显示驱动电路驱动对应触摸区域的显示像素发光。
在某些实施方式中，感光面板200用于执行对显示面板100的显示区域内任意位置的目标物体的生物特征信息感测。具体的，例如请结合参照图12和图13，显示面板100具有一显示区域101和非显示区域102，该显示区域101由显示面板100的所有显示像素12的发光区域界定，显示区域101以外的区域为非显示区域102，非显示区域102用于设置驱动显示像素12的显示驱动电路等电路或者设置供柔性电路板连接的线路绑定区。感光面板200具有一感测区域203和非感测区域204，该感测区域203由感光面板200的所有感光单元22的感测区域界定，感测区域203以外的区域为非感测区域204，非感测区域204用于设置驱动感光单元22执行光感测的感光驱动电路23等电路或者供 柔性电路板连接的线路绑定区。感测区域203的形状与显示区域101的形状一致，且感测区域203的大小大于或等于显示区域101的大小，如此使得感光面板200能对接触或接近显示面板100的显示区域101任意位置的目标物体的预定生物特征信息的感测。进一步地，感光面板200的面积小于或等于显示面板100的面积，且感光面板100的形状与显示面板100的形状一致，如此便于感光面板200与显示面板100的组装。然，可变更地，在某些实施方式中，感光面板200的面积也可以大于显示面板100的面积。
在某些实施方式中，所述感光面板200的感测区域203也可为小于显示面板100的显示区域101，以实现显示面板100的显示区域101的局部区域的目标物体的预定生物特征信息的感测。
在某些实施方式中，请参照图14，图14示出了本实用新型另一实施方式的显示模组的局部结构。该显示像素12包括红色像素R、绿色像素G和蓝色像素B三种显示像素，并不局限显示像素12的其他像素结构。例如，该显示像素也可以为黑白像素，或者红色像素、绿色像素和蓝色像素；或者红色像素、绿色像素、蓝色像素、白色像素；或者红色像素、绿色像素、蓝色像素和白色像素。上述感光器件220设置在非透光区域P2内。为了加强感光器件220的感光效果，该感光器件220尽可能做大，即非透光区域P2除开关器件222、扫描线201和数据线202以外的区域都用来形成感光器件220。
进一步地，参照图15和图16，图15示出了本实用新型一实施方式的电子设备的结构，图16示出了图15所示的电子设备沿I-I线的剖面结构，而且图16仅示出了电子设备的部分结构。该电子设备设有上述任意一实施结构的显示模组，既用于电子设备的图像显示，又用于对接触或接近电子设备的目标物体的生物特征信息进行感测。
电子设备例如但不局限为消费性电子产品、家居式电子产品、车载式电子产品、金融终端产品等合适类型的电子产品。其中，消费性电子产品如为手机、平板电脑、笔记本电脑、桌面显示器、电脑一体机等。家居式电子产品如为智能门锁、电视、冰箱、穿戴式设备等。车载式电子产品如为车载导航仪、车载DVD等。金融终端产品如为ATM机、自助办理业务的终端等。图15示出的电子设备以手机类的移动终端为例，然上述显示模组也可适用于其它合适的电子产品，并不局限于手机类的移动终端。
具体地，该移动终端3的正面设有一显示面板100，该显示面板100上方设有保护盖板300。可选地，该显示面板100的屏占比较高，例如80％以上。屏占比是指显示面板100的显示区域101占移动终端3的正面区域的比例。该感光面板200对应设置在该显示面板100的上方，并位于保护盖板300下方。该感光面板200用于感测接触或接近显示面板100的显示区域101任意位置的目标物体的预定生物特征信息。
当移动终端3处于亮屏状态、且处于生物特征信息感测模式时，该显示面板100发出光信号。当一物体接触或接近该显示区时，该感光面板200接收由该物体反射回来的光信号，转换接收到的光信号为相应的电信号，并根据该电信号获取该物体的预定生物特征信息，例如，指纹图像信息。从而，该感光面板200可实现对接触或接近显示区域101任意位置的目标物体进行感测。
本实用新型实施方式的电子设备中，具有如下优点：
第一、感光面板与显示面板贴合，并利用显示面板发出的光信号实现目标物体的生物特征信息感测，不需要额外设置光源，从而不但节省了电子设备的成本，而且还实现了对接触显示面板的显示区域任意位置的目标物体进行生物特征信息感测。而且，该显示模组中感光模组可以独立制成后，再与显示装置进行组装，从而加快了电子设备的制备。
第二，由于目标物体不同部位对光信号的反射存在差异，相邻的感光单元之间感测到的光信号会存在混叠，从而造成获取的感测信息模糊，因此本实用新型实施方式通过设置抗混叠成像元件，防止了相邻的感光单元接收的光信号产生混叠，提高了感光模组的感测精度。
第三，将感光面板位于显示面板上方，因此经目标物体反射回来的光信号直接到达感光面板，从而避免了光信号传输过程中其他物质的干涉，提高了感光模组的感测精度。
进一步地，所述电子设备进一步包括一触摸传感器(图中未示出)，所述触摸传感器用于在一目标物体接触所述保护盖板时，确定所述目标物体的触摸区域，以供电子设备在所述触摸区域内执行生物特征信息感测。
在某些实施方式中，所述触摸传感器或者与所述保护盖板300集成，或者与感光面板200集成，或者与显示面板100集成。通过集成的触摸传感器，不但实现了对目标物体的触摸检测，而且也减小了电子设备的厚度，有利于电子设备朝轻薄化方向发展。
在本说明书的描述中，参考术语“一个实施方式”、“某些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重 要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本实用新型的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
尽管上面已经示出和描述了本实用新型的实施方式，可以理解的是，上述实施方式是示例性的，不能理解为对本实用新型的限制，本领域的普通技术人员在本实用新型的范围内可以对上述实施方式进行变化、修改、替换和变型。

Claims (21)

  1. 一种显示模组，包括：
    显示装置，包括一显示面板，用于执行图像显示；
    感光模组，设置于所述显示面板上方，包括一感光面板以及位于所述感光面板上方的抗混叠成像元件，用于感测光信号，以获取接触或接近所述显示模组的目标物体的预定生物特征信息；所述感光面板包括供显示面板发出的光信号穿过的第三透光区域。
  2. 如权利要求1所述的显示模组，其特征在于：所述显示面板包括多个显示像素，所述显示像素与所述第三透光区域对应设置。
  3. 如权利要求1所述的显示模组，其特征在于：相邻的所述显示像素之间形成间隔，所述感光面板包括透明基板以及设置在所述透明基板上的多个感光单元，且所述感光单元位于所述间隔上方。
  4. 如权利要求3所述的显示模组，其特征在于：所述感光单元包括至少一感光器件和至少一开关器件，所述开关器件用于接收一扫描驱动信号，并在接收到所述扫描驱动信号后导通，将一参考信号施加于所述感光器件，驱动所述感光器件工作。
  5. 如权利要求4所述的显示模组，其特征在于：所述开关器件位于所述感光器件下方。
  6. 如权利要求4所述的显示模组，其特征在于：所述感光器件选择对蓝色光信号或绿色光信号的感光灵敏度高的感光器件。
  7. 如权利要求1所述的显示模组，其特征在于：所述感光模组进一步包括滤光膜，所述滤光膜设于所述感光面板上，用于将预设波段以外的光信号进行过滤。
  8. 如权利要求1所述的显示模组，其特征在于：所述感光面板的大小形状与所述显示面板适配。
  9. 如权利要求3所述的显示模组，其特征在于：所述抗混叠成像元件包括吸光墙以及由吸光墙围成的多个第一透光区域和第二透光区域，每一所述感光单元对应至少一所述第一透光区域，所述第二透光区域与所述第三透光区域对应设置。
  10. 如权利要求9所述的显示模组，其特征在于：所述吸光墙包括多个交替层叠设置的吸光块和垫高块。
  11. 如权利要求10所述的显示模组，其特征在于：所述垫高块由透明材料制成。
  12. 如权利要求9所述的显示模组，其特征在于：所述第一透光区域和第二透光区域内填充透明材料。
  13. 如权利要求1所述的显示模组，其特征在于：所述抗混叠成像元件包括多层交替层 叠设置的吸光层和透明支撑层；所述吸光层包括多个间隔设置的吸光块；所述透明支撑层由透明材料填充形成，且一并填充所述吸光块之间的间隔；其中所述间隔对应的区域形成第一透光区域，每一所述感光单元对应至少一所述第一透光区域，所述第二透光区域与所述第三透光区域对应设置。
  14. 如权利要求13所述的显示模组，其特征在于：所述每一层透明支撑层的厚度不相等。
  15. 如权利要求14所述的显示模组，其特征在于：所述透明支撑层的厚度逐层增大。
  16. 如权利要求1所述的显示模组，其特征在于：所述抗混叠成像元件在所述感光面板上直接形成；或者，所述抗混叠成像元件独立形成后，再设置于所述感光面板上。
  17. 如权利要求2所述的显示模组，其特征在于：所述显示装置进一步包括显示驱动电路，用于驱动所述多个显示像素发光，以用作所述感光模组进行光感测时的光源。
  18. 一种电子设备，其特征在于：包括如权利要求1-17任意一项所述的显示模组。
  19. 如权利要求18所述的电子设备，其特征在于：所述电子设备进一步包括一保护盖板，在所述电子设备执行生物特征信息感测时，用于供一目标物体触摸。
  20. 如权利要求19所述的电子设备，其特征在于：所述电子设备进一步包括一触摸传感器，所述触摸传感器用于在一目标物体接触所述保护盖板时，确定所述目标物体的触摸区域，以供电子设备在所述触摸区域内执行生物特征信息感测。
  21. 如权利要求20所述的电子设备，其特征在于：所述触摸传感器或者与所述保护盖板集成，或者与所述显示模组中的感光面板集成，或者与所述显示模组中的显示面板集成。
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