WO2023206100A1 - 显示模组和显示装置 - Google Patents

显示模组和显示装置 Download PDF

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Publication number
WO2023206100A1
WO2023206100A1 PCT/CN2022/089393 CN2022089393W WO2023206100A1 WO 2023206100 A1 WO2023206100 A1 WO 2023206100A1 CN 2022089393 W CN2022089393 W CN 2022089393W WO 2023206100 A1 WO2023206100 A1 WO 2023206100A1
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WO
WIPO (PCT)
Prior art keywords
light
transmitting
protective layer
display panel
display module
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Application number
PCT/CN2022/089393
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English (en)
French (fr)
Inventor
包征
杨皓天
陈功
王明强
丁涛
郝晓东
王康
张家祥
白久园
左堃
傅晓亮
张斌
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202280000895.1A priority Critical patent/CN117321643A/zh
Priority to PCT/CN2022/089393 priority patent/WO2023206100A1/zh
Publication of WO2023206100A1 publication Critical patent/WO2023206100A1/zh

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  • the present disclosure relates to the field of display technology, and in particular, to a display module and a display device.
  • the display device has the function of fingerprint recognition.
  • One of the principles of fingerprint recognition is to use the different energy intensities of light absorption and reflection by the peaks and troughs of the fingerprint to generate light and dark stripes with different brightness by sensing the energy difference with the fingerprint sensor. , to identify fingerprints.
  • a display module includes a display panel and a light-transmitting protective film.
  • the display panel has a fingerprint recognition area.
  • the light-transmitting protective film is located on the back side of the display panel, and the back side is the opposite side to the display side of the display panel.
  • the light-transmitting protective film includes a protective layer, a light-shielding pattern and a light-transmitting adhesive layer.
  • the protective layer has a target area; at least the target area is a light-transmitting area; and the target area at least partially overlaps with the fingerprint recognition area.
  • the light-shielding pattern is located on one side of the protective layer; the light-shielding pattern defines a plurality of imaging holes, the plurality of imaging holes are spaced apart from each other, and the orthographic projection of the plurality of imaging holes on the protective layer is at least located the target area.
  • the light-transmitting adhesive layer is located on the side of the light-shielding pattern away from the protective layer, and the surface of the light-transmitting adhesive layer on the side far from the light-shielding pattern is in contact with the display panel.
  • the outer contour of the orthographic projection area of the plurality of imaging holes on the protective layer substantially coincides with the edge of the target area.
  • the light-transmitting glue layer covers the light-shielding pattern and the protective layer, wherein the light-transmitting glue layer fills the imaging holes.
  • the imaging hole is a circular hole, and the aperture size of the imaging hole is 100 ⁇ m ⁇ 250 ⁇ m.
  • the distance between two adjacent imaging holes is 200 ⁇ m ⁇ 350 ⁇ m.
  • the size of the light-shielding pattern in a direction perpendicular to the protective layer is 200 nm to 500 nm.
  • the size of the protective layer in a direction perpendicular to the protective layer is larger than the size of the light-transmitting adhesive layer in a direction perpendicular to the protective layer.
  • the ratio between the size of the light-transmitting adhesive layer in the direction perpendicular to the protective layer and the size of the protective layer in the direction perpendicular to the protective layer is 1:10 ⁇ 3:10.
  • the display module further includes a heat dissipation film.
  • the heat dissipation film includes a light-shielding material; the heat dissipation film is located on a side of the light-transmitting protective film away from the display panel, and the heat dissipation film is provided with a light-transmitting opening.
  • the orthographic projection outline of the light-transmitting opening on the protective layer of the light-transmitting protective film surrounds the orthographic projection area of the plurality of imaging holes of the light-transmitting protective film on the protective layer.
  • a display device in another aspect, includes a display module and a fingerprint sensor.
  • the display module is the display module described in any of the above embodiments.
  • the fingerprint sensor is located on the side of the light-transmitting protective film of the display module away from the display panel.
  • the orthographic projection of the fingerprint sensor on the display panel of the display module is at least located in the fingerprint recognition area of the display panel. .
  • Figure 1 is a structural diagram of a display device according to some embodiments.
  • Figure 2 is a structural diagram of a display device according to some embodiments.
  • Figure 3 is a structural diagram of a display panel provided according to some embodiments.
  • Figure 4 is a structural diagram of a light-transmitting protective film in a display module provided according to some embodiments.
  • Figure 5 is a view of the projection position of the light-shielding metal on the protective layer in the display module according to some embodiments
  • Figure 6 is a structural diagram of light-shielding metal in a display module provided according to some embodiments.
  • Figure 7 is a view of the projection position of the light-shielding metal on the protective layer in the display module according to some embodiments.
  • Figure 8 is a structural diagram of the light-transmitting protective film in the display module before being connected to the display panel according to some embodiments;
  • Figure 9 is a structural diagram of a display module provided according to some embodiments.
  • Figure 10 is a flow chart of a method for making a light-transmitting protective film according to some embodiments.
  • Figures 11A to 11F are structural diagrams of a method for producing a light-transmitting protective film at different stages of production according to some embodiments
  • Figure 12 is a flow chart of a method for making a light-transmitting protective film according to some embodiments.
  • FIG. 13 is a flow chart of a method for manufacturing a display module according to some embodiments.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.
  • At least one of A, B and C has the same meaning as “at least one of A, B or C” and includes the following combinations of A, B and C: A only, B only, C only, A and B The combination of A and C, the combination of B and C, and the combination of A, B and C.
  • a and/or B includes the following three combinations: A only, B only, and a combination of A and B.
  • the term “if” is optionally interpreted to mean “when” or “in response to” or “in response to determining” or “in response to detecting,” depending on the context.
  • the phrase “if it is determined" or “if [stated condition or event] is detected” is optionally interpreted to mean “when it is determined" or “in response to the determination" or “on detection of [stated condition or event]” or “in response to detection of [stated condition or event]”.
  • Example embodiments are described herein with reference to cross-sectional illustrations and/or plan views that are idealized illustrations.
  • the thickness of layers and regions are exaggerated for clarity. Accordingly, variations from the shapes in the drawings due, for example, to manufacturing techniques and/or tolerances are contemplated.
  • example embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result from, for example, manufacturing. For example, an etched area shown as a rectangle will typically have curved features. Accordingly, the regions shown in the figures are schematic in nature and their shapes are not intended to illustrate the actual shapes of regions of the device and are not intended to limit the scope of the exemplary embodiments.
  • an organic light emitting diode (OLED) display device 000 includes a display panel 010, and touch functions located on the display side of the display panel 010 and stacked sequentially in a direction away from the display panel 010.
  • the optical imaging layer 080 may be a collimator array or a microhole array.
  • the OLED display device 000 has a fingerprint recognition function. As shown in Figure 1, the principle of fingerprint recognition by the OLED display device 000 is: the light emitted by the display panel 010 irradiates the reflected light formed by the fingerprint ZW of the human hand (indicated by dotted arrows in the drawings), which passes through the interior of the display panel 010 The gap between the sub-pixels is incident on the collimator array or microhole array on the side of the display panel 010 away from the protective cover 050, causing the reflected light to be imaged on the fingerprint sensor 090. The fingerprint sensor 090 obtains fingerprint information based on the formed image to achieve fingerprint recognition. Fingerprint identification.
  • the collimator array or the microhole array may cause the display device 000 to be thicker in the second direction Y.
  • some embodiments of the present disclosure provide a display module and a display device. They are introduced separately below.
  • an embodiment of the present disclosure provides a display device 1000.
  • the display device may be any device that displays images, whether moving (e.g., video) or stationary (e.g., still images), and whether text or text. More specifically, it is contemplated that the embodiments may be implemented in or in association with a variety of electronic devices, such as, but not limited to, mobile phones, wireless devices, personal data assistants (PDAs) , handheld or portable computers, GPS receivers/navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer display, etc.), navigator, cockpit controller and/or display, camera view display (e.g. display of a rear view camera in a vehicle), electronic photographs, electronic billboards or signs, projectors, building structures, packaging and aesthetic structure (for example, for the display of an image of a piece of jewelry), etc.
  • PDAs personal data assistants
  • the display device 1000 includes a frame, a display panel 200 disposed within the frame, a circuit board, a display driver IC (Integrated Circuit), and other electronic accessories.
  • a display driver IC Integrated Circuit
  • the above-mentioned display panel 200 can be: an OLED display panel, a Quantum Dot Light Emitting Diode (QLED for short) display panel, a Micro Light Emitting Diode (Micro LED for short) display panel, etc., this disclosure does not Make specific limitations.
  • QLED Quantum Dot Light Emitting Diode
  • Micro LED Micro LED for short
  • the following embodiments of the present disclosure take the above-mentioned display panel 200 as an OLED display panel as an example to illustrate the present disclosure, but it should be considered that it is not limited to OLED display devices.
  • the main structure of the display device 1000 includes a display panel 200, a touch functional layer 300, an anti-reflective structure such as a polarizer 400, and an optically clear adhesive (Optically Clear Adhesive, OCA) arranged in sequence. Layer 500 and cover 600.
  • the anti-reflective structure may include color filters and black matrices.
  • the display panel 200 includes a base substrate 210 and a light-emitting functional layer 220 located on the base substrate 210 .
  • the display panel 200 may also include an encapsulation layer (not shown) for encapsulating the light-emitting functional layer 220 .
  • the packaging layer may be a packaging film or a packaging substrate.
  • the material of the base substrate 210 may be, for example, polyethylene terephthalate (PET), polyimide (PI), cycloolefin polymer (Cyclo Olefin Polymer, COP), etc.
  • PET polyethylene terephthalate
  • PI polyimide
  • COP cycloolefin polymer
  • the above-mentioned display panel 200 includes: a display area (active area, AA; AA area for short; also called an effective display area) and a peripheral area arranged around the AA area.
  • a display area active area, AA; AA area for short; also called an effective display area
  • a peripheral area arranged around the AA area.
  • the above-mentioned display panel 200 includes sub-pixels (sub-pixels) P of multiple colors in the AA area.
  • the sub-pixels of multiple colors include at least first-color sub-pixels, second-color sub-pixels and third-color sub-pixels.
  • the first The color, the second color and the tertiary color may be three primary colors (eg red, green and blue).
  • the above-mentioned plurality of sub-pixels P are arranged in a matrix form as an example.
  • the sub-pixels P arranged in a row along the first direction X are called sub-pixels of the same row; the sub-pixels P arranged in a row along the second direction Y are called sub-pixels of the same column.
  • Each sub-pixel P includes a light-emitting device and a driving circuit provided on the substrate 210.
  • the driving circuit includes a plurality of thin film transistors.
  • the light-emitting device includes an anode, a light-emitting layer, and a cathode.
  • the anode is electrically connected to the drain of a thin film transistor serving as a driving transistor among the plurality of thin film transistors of the driving circuit.
  • the electrical connection is also made through a transfer electrode.
  • the transfer electrode is located on the film layer where the drain electrode is located and the anode. between the film layers.
  • the display device 1000 When the display device 1000 is an electroluminescent display device, the display device 1000 may be a top-emission display device. In this case, the anode close to the substrate 210 is opaque, and the cathode far away from the substrate 210 is transparent or translucent; display The device 1000 may also be a bottom-emission display device, in which case the anode close to the substrate 210 is transparent or translucent, and the cathode remote from the substrate 210 is opaque.
  • the touch functional layer 300 is directly disposed on the display panel 200 , so that the display panel 200 can be regarded as the base substrate of the touch functional layer 300 .
  • This structure is conducive to realizing the display.
  • the device 1000 is thin and light.
  • the display module 900 includes a display panel 200 and a light-transmitting protective film 100 .
  • the display panel 200 has a fingerprint recognition area ZA, and the fingerprint recognition area ZA is configured to collect the user's fingerprint information.
  • the fingerprint information may be a fingerprint image, or may be optical information or electrical information that can reflect fingerprint characteristics, which is not limited here. It should be understood that when the user's finger is placed in the fingerprint recognition area ZA, the display module 900 can collect the user's fingerprint information.
  • the fingerprint identification area ZA is located within at least part of the display area AA. As shown in Figure 9, in some examples, the fingerprint recognition area ZA is a partial display area AA, that is, the user's fingerprint information can only be collected in a specific display area AA. In other examples, the fingerprint recognition area ZA is the display area AA, that is, the entire display area AA can be used to collect the user's fingerprint information.
  • the fingerprint recognition area ZA When the fingerprint recognition area ZA is the partial display area AA, the fingerprint recognition area ZA may be located at the center or edge of the display area AA.
  • the outer contour shape of the fingerprint recognition area ZA may be a rectangle, a circle, an ellipse, a regular polygon, etc., which is not limited here.
  • the light-transmitting protective film 100 is located on the back side of the display panel 200 , and the back side of the display panel 200 is the side opposite to the display side of the display panel 200 .
  • the display side of the display panel 200 is the side close to the protective cover 600
  • the back side of the display panel 200 is the side away from the protective cover 600 .
  • the light-transmitting protective film 100 includes a protective layer 110 , a light-shielding pattern 120 and a light-transmitting adhesive layer 130 .
  • the light-shielding pattern 120 is located between the protective layer 110 and the light-transmitting adhesive layer 130
  • the light-transmitting adhesive layer 130 is located between the light-shielding pattern 120 and the display panel 200 .
  • the protective layer 110 is located at least within the display area AA. In some examples, part of the protective layer 110 is located in the display area AA, and another part is located in the peripheral area. In other embodiments, the protective layer 110 overlaps the display area AA. In other embodiments, the protective layer 110 is only located in part of the display area AA.
  • the material of the protective layer 110 may include PET or other suitable materials, which is not limited here.
  • the size d1 of the protective layer 110 in the second direction Y may be 50 ⁇ m ⁇ 100 ⁇ m. For example: 50 ⁇ m, 62 ⁇ m, 73.4 ⁇ m, 88 ⁇ m, 95.5 ⁇ m or 100 ⁇ m. If the dimension d1 of the protective layer 110 in the second direction Y is greater than 100 ⁇ m, the amount of light transmitted from the target area in the protective layer 110 will be reduced, which is detrimental to the imaging effect of the display module 900 . When the size d1 of the protective layer 110 in the second direction Y is less than 50 ⁇ m, the light transmittance of the area outside the target area MA is high, which will increase the amount of light transmitted from the area outside the target area MA in the protective layer 110. It is easy to cause interference to imaging. Therefore, the size d1 of the protective layer 110 in the second direction Y is between 50 ⁇ m and 100 ⁇ m, which can improve the imaging effect of the display module 900 .
  • the protective layer 110 includes the target area MA.
  • the target area MA and the fingerprint recognition area ZA at least partially overlap, for example, the target area MA and the fingerprint recognition area ZA substantially overlap.
  • the target area MA may be a partial area of the protective layer 110 .
  • the target area MA is a light-transmitting area, and the light transmittance of the target area MA can be greater than 90%.
  • the protective layer 110 may be entirely a light-transmitting area, that is, the target area MA and the area outside the target area MA are all light-transmitting areas.
  • the target area MA is a light-transmitting area
  • the light transmittance of the area other than the target area MA in the protective layer 110 is less than the light transmittance of the target area MA, for example, the light transmittance of the area other than the target area MA
  • the rate can be less than 60% or even less than 30%, which is not limited here.
  • the light-shielding pattern 120 is located between the protective layer 110 and the display panel 200 , and the light-shielding pattern 120 may be in direct contact with the protective layer 110 .
  • the light shielding pattern 120 is at least partially located within the target area MA. It can be understood that the orthographic projection of the light shielding pattern 120 on the protective layer 110 is at least partially located within the target area MA. As shown in Figure 5, in some examples, the orthographic projection 120' of a part of the light-shielding pattern is located within the target area MA, and the orthographic projection 120' of another part of the light-shielding pattern is located outside the target area MA. In other examples, the orthographic projection 120' of the light shielding pattern is entirely located within the target area MA.
  • the material of the light-shielding pattern 120 may include metal materials, such as molybdenum Mo or aluminum Al; and may also include other light-shielding organic materials or inorganic materials, such as resin.
  • the size d2 of the light shielding pattern 120 in the second direction Y may be 200nm ⁇ 500nm.
  • the size d2 of the light-shielding pattern 120 in the second direction Y is greater than 500 nm, which easily increases the step of the light-transmitting adhesive layer 130 away from the protective layer 110 and reduces the bonding strength between the light-transmitting protective film 100 and the display panel 200 .
  • the size d2 of the light-shielding pattern 120 in the second direction Y is less than 200 nm, which easily reduces the light-shielding performance of the light-shielding pattern 120 and reduces the imaging effect of the imaging hole 122 . Therefore, the size d2 of the light-shielding pattern 120 in the second direction Y is between 200 nm and 500 nm, which can both improve the firmness of the bonding between the light-transmitting protective film 100 and the display panel 200 and improve the imaging effect of the display module 900 .
  • the light-shielding pattern 120 includes a light-shielding portion 121 and an imaging hole 122 opened on the light-shielding portion 121 .
  • the number of imaging holes 122 may be multiple.
  • One imaging hole 122 is configured to allow part of the light emitted from the side of the display panel 200 to pass through, thereby forming an inverted image corresponding to the passed light on the side of the light-shielding pattern 120 away from the display panel 200 .
  • the plurality of imaging holes 122 cooperate to form a complete fingerprint inverse image on the side of the light-shielding pattern 120 away from the display panel 200 .
  • imaging hole 122 can be a round hole, an elliptical hole, a rectangular hole, a regular polygonal hole, a diamond hole, etc. There is no limitation here. It should be understood that any hole that can realize the small hole imaging principle belongs to the embodiment of the present disclosure. imaging hole 122.
  • the orthographic projection 120' of the light-shielding pattern 120 on the protective layer 110 includes: the orthographic projection 122' of the imaging hole 122 on the protective layer 110, and the orthographic projection of the light-shielding portion 121 on the protective layer 110. 121'.
  • the orthographic projection 122' of the imaging hole 122 on the protective layer 110 is located at least in the target area MA. In some examples, as shown in FIG. 7 , the orthographic projection 122' of the imaging hole 122 on the protective layer 110 is entirely located in the target area MA. In other embodiments, as shown in FIG.
  • the orthographic projection 122 ′ of the imaging hole 122 on the protective layer 110 is partially located within the target area MA, for example, the orthographic projection 122 of the imaging hole 122 at an edge position on the protective layer 110 ', part of the orthographic projection is located within the target area MA, and the other part is located outside the target area MA.
  • the imaging hole 122 is a circular hole, and the aperture size d3 of the imaging hole 122 is 100 ⁇ m ⁇ 250 ⁇ m. For example: 100 ⁇ m, 128 ⁇ m, 167 ⁇ m, 203 ⁇ m, 222.2 ⁇ m, 242 ⁇ m or 250 ⁇ m.
  • the aperture size d3 of the imaging hole 122 is greater than 250 ⁇ m, more interfering light passes through the imaging hole 122, which may cause the inverted fingerprint image formed on the other side of the light-shielding pattern 120 to be unclear and reduce the imaging effect.
  • the aperture size d3 of the imaging hole 122 is less than 100 ⁇ m, the amount of light passing through the imaging hole 122 is small, and the light easily causes interference from the diffraction effect, reducing the imaging effect. Therefore, the aperture size d3 of the imaging hole 122 is between 100 ⁇ m and 250 ⁇ m, which can improve the imaging effect of the display module 900 .
  • the aperture size of the multiple imaging holes 122 may be a unified size, or the multiple imaging holes 122 may have multiple different aperture sizes.
  • the aperture sizes of the multiple imaging holes 122 are all 200 ⁇ m.
  • the aperture size of some imaging holes 122 is 150 ⁇ m, and the aperture size of other imaging holes 122 is 200 ⁇ m.
  • a plurality of imaging holes 122 may be arranged at intervals from each other.
  • the distance d4 between two adjacent imaging holes 122 is 200 ⁇ m ⁇ 350 ⁇ m.
  • the distance d4 between two adjacent imaging holes 122 is greater than 350 ⁇ m, the inverted images formed through the multiple imaging holes 122 are easily spliced incompletely, and a complete inverted fingerprint image cannot be obtained.
  • the distance d4 between two adjacent imaging holes 122 is less than 200 ⁇ m, the degree of overlap between the inverted images formed through the plurality of imaging holes 122 is high, and the light utilization efficiency is low. Therefore, the distance d4 between two adjacent imaging holes 122 is between 200 ⁇ m and 350 ⁇ m, which can obtain a complete fingerprint inverse image and improve the utilization of light.
  • the spacing between the imaging holes 122 in the light-shielding pattern 120 can be a uniform size, or there can be multiple different spacing sizes between different imaging holes 122 .
  • the distance between two adjacent imaging holes 122 is 250 ⁇ m.
  • the distance between some adjacent two imaging holes 122 is 280 ⁇ m, and the distance between other two adjacent imaging holes 122 is 320 ⁇ m.
  • the light-transmitting adhesive layer 130 can be on the side of the light-shielding pattern 120 away from the protective layer 110 and cover the light-shielding pattern 120 . In some examples, the light-transmitting adhesive layer 130 also covers the protective layer 110 .
  • the surface of the light-transmitting adhesive layer 130 on the side away from the protective layer 110 can be a flat surface, a curved surface or a rough surface, which is not limited here.
  • the material of the light-transmitting adhesive layer 130 may include organic materials or other suitable materials.
  • the light-transmitting adhesive layer 130 may be pressure-sensitive adhesive (PSA).
  • PSA pressure-sensitive adhesive
  • the light transmittance of the light-transmitting adhesive layer 130 may be greater than 90%.
  • the surface of the light-transmitting adhesive layer 130 away from the light-shielding pattern 120 and the protective layer 110 is an adhesive surface, and the adhesive surface is a plane.
  • the light-transmitting adhesive layer 130 can be made of a sticky material, and the side of the light-transmitting adhesive layer 130 close to the protective layer 110 and the light-shielding pattern 120 is bonded to the protective layer 110 and the light-shielding pattern 120 respectively.
  • the surface of the light-transmitting adhesive layer 130 away from the light-shielding pattern 120 and the protective layer 110 may be configured to be bonded to the display panel 200 .
  • the backside surface of the display panel 200 is a flat surface
  • the surface of the light-transmitting adhesive layer 130 away from the light-shielding pattern 120 and the protective layer 110 is a flat surface, which can better bond with the display panel 200 and improve the connection between the light-transmitting protective film 100 and the display panel. 200 connection strength.
  • the size d5 of the light-transmitting adhesive layer 130 in the second direction Y may be 10 ⁇ m ⁇ 15 ⁇ m. For example: 10 ⁇ m, 11.4 ⁇ m, 12.4 ⁇ m, 13.5 ⁇ m, 14.6 ⁇ m or 15 ⁇ m.
  • the size d5 of the light-transmitting adhesive layer 130 in the second direction Y is greater than 15 ⁇ m, the light transmittance of the light-transmitting adhesive layer 130 will be reduced, which is detrimental to the imaging effect of the display module 900.
  • the size d5 of the light-transmitting adhesive layer 130 in the second direction Y is less than 10 ⁇ m, and a step is likely to occur at the position covering the light-shielding pattern 120 , which reduces the firmness of the bonding between the light-transmitting adhesive layer 130 and the display panel 200 . Therefore, the size d5 of the light-transmitting adhesive layer 130 in the second direction Y is between 10 ⁇ m and 15 ⁇ m, which can achieve both the firmness of the bonding between the light-transmitting adhesive layer 130 and the display panel 200 and the imaging effect of the display module 900 .
  • the dimension d5 of the light-transmitting adhesive layer 130 in the second direction Y may be 15 ⁇ m, and the dimension d1 of the protective layer 110 in the second direction Y may be 50 ⁇ m. That is, the ratio between the size of the light-transmitting adhesive layer 130 in the second direction Y and the size of the protective layer 110 in the second direction Y may be 3:10.
  • the dimension d5 of the light-transmitting adhesive layer 130 in the second direction Y may be 10 ⁇ m, and the dimension d1 of the protective layer 110 in the second direction Y may be 100 ⁇ m. That is, the ratio between the size of the light-transmitting adhesive layer 130 in the second direction Y and the size of the protective layer 110 in the second direction Y may be 1:10.
  • the size d1 of the bonding protective layer 110 in the second direction Y may be 50 ⁇ m to 100 ⁇ m, and the size d5 of the light-transmitting adhesive layer 130 in the second direction Y may be 10 ⁇ m to 15 ⁇ m.
  • the ratio between the dimension d5 of the light-transmitting adhesive layer 130 in the second direction Y and the dimension d1 of the protective layer 110 in the second direction Y may be in the range of 1:10 to 3:10.
  • the light emitted from the display panel 200 side to the light-transmitting protective film 100 passes through the light-transmitting protective film 100 in the order of: first passing through the light-transmitting adhesive layer 130, then passing through the imaging hole 122, and finally passing through the protective layer 130.
  • Target area MA thereby forming an inverted fingerprint image on the side of the light-transmitting protective film 100 away from the display panel 200 .
  • the thickness of the light-transmitting protective film 100 (the size in the second direction Y) will not be increased, and fingerprint imaging can be achieved at the same time. Effect. Compared with the structure of FIG. 1 in the related art, space for additional microhole arrays or collimator arrays is saved in the second direction Y, thereby achieving the effect of thinning the display module 900 and facilitating the display device 1000 Thin and lightweight design.
  • the outer contour LK of the orthographic projection area of the plurality of imaging holes 122 on the protective layer 110 substantially coincides with the edge of the target area MA.
  • the above-mentioned orthographic projection area of the plurality of imaging holes 122 on the protective layer 110 refers to the area surrounding the orthographic projection 122' of each imaging hole 122 on the protective layer 110, that is, the area surrounding the plurality of imaging holes 122 on the protective layer 110.
  • the outer contour LK of the orthographic projection area of the plurality of imaging holes 122 on the protective layer 110 substantially coincides with the edge of the target area MA. It can be understood that the plurality of imaging holes 122 of the light-shielding pattern 120 are located in the target area MA.
  • the orthographic projection of the light-shielding pattern 120 on the protective layer 110 may exceed the target area MA, and the plurality of imaging holes 122 in the light-shielding pattern 120 is located within the target area MA.
  • a plurality of imaging holes 122 are arranged on the outer contour LK of the orthographic projection area on the protective layer 110 and surrounding the edge of the target area MA.
  • part of the orthographic projection area of the plurality of imaging holes 122 on the protective layer 110 covers the target area MA, and the other part is located outside the edge of the target area MA. In this way, even if there is a slight position error between the light-shielding pattern 120 and the protective layer 110, it can also be ensured that the orthographic projection of the light-shielding pattern 120 on the protective layer 110 is located within the target area MA.
  • This embodiment can withstand slight position errors between the light-shielding pattern 120 and the protective layer 110 during the actual manufacturing process, thereby improving the yield of the light-transmitting protective film 100 .
  • the light-transmitting glue layer 130 covers the light-shielding pattern 120 and the protective layer 110 , wherein the light-transmitting glue layer 130 fills the imaging hole 122 .
  • the interior of the imaging hole 122 is filled with a portion of the light-transmitting adhesive layer 130 . Since the light-transmitting adhesive layer 130 itself has high light transmittance, it will not affect the imaging effect of the imaging hole 122 .
  • the light passes through the light-transmitting protective film 100 through the light-transmitting adhesive layer 130 and the protective layer 110.
  • the light-transmitting protective film 100 passes through the light-transmitting adhesive layer 130 and the protective layer 110.
  • the protective layer 110 It can reduce the transmission medium of light, thereby reducing the amount of light transmission lost due to total reflection between the two media, and improving the imaging efficiency of the inverted fingerprint image.
  • the display module 900 further includes a heat dissipation film 700 .
  • the heat dissipation film 700 includes a light-shielding material; the heat dissipation film 700 may be a super clean foam layer (Super Clean Foam, SCF).
  • the heat dissipation film 700 can have a single-layer structure or a composite layer structure, and has functions such as light shielding and heat dissipation.
  • the heat dissipation film 700 includes an adhesive layer, a buffer layer and a heat dissipation layer stacked in sequence from the back side away from the display panel 200 .
  • the adhesive layer may include textured adhesive or other suitable materials.
  • the heat dissipation layer may include thermally conductive metal materials, such as copper; it may also include graphene materials, and may also include other suitable materials.
  • the cushioning layer may include foam material, or other suitable materials.
  • the heat dissipation film 700 can be bonded to the back side of the protective layer 110 of the light-transmitting protective film 100 to achieve connection with the light-transmitting protective film 100 .
  • the adhesive layer of the heat dissipation film 700 is bonded to the back side of the protective layer 110 of the light-transmitting protective film 100 .
  • the heat dissipation film 700 is located on the side of the light-transmitting protective film 100 away from the display panel 200 , and the heat-dissipation film 700 has a light-transmitting opening 710 .
  • the orthographic projection outline of the light-transmitting opening 710 on the protective layer 110 of the light-transmitting protective film 100 surrounds the orthographic projection area of the plurality of imaging holes 122 of the light-transmitting protective film 100 on the protective layer 110 .
  • the orthographic projection outline of the light-transmitting opening 710 on the protective layer 110 of the light-transmitting protective film 100 may be approximately the same as the edge of the orthographic projection area of the plurality of imaging holes 122 of the light-transmitting protective film 100 on the protective layer 110 . coincide.
  • the light-transmitting opening 710 can allow the reflected light passing through the imaging hole 122 to pass through, and can block the light outside the target area MA to prevent the light outside the target area MA from interfering with imaging, thereby improving the reliability of imaging.
  • the orthographic projection outline of the light-transmitting opening 710 on the protective layer 110 of the light-transmitting protective film 100 may cover the orthographic projection area of the plurality of imaging holes 122 of the light-transmitting protective film 100 on the protective layer 110 , and The surrounding area of the orthographic projection area. In this way, in actual production, the alignment error between the light-transmitting opening 710 and the target area MA can be overcome to a certain extent, and the production yield of the display module 900 can be improved.
  • the light emitted by the display panel 200 is reflected by the fingerprint on the fingerprint recognition area ZA, and the reflected light can pass through the gap between the sub-pixels P in the display panel 200, and then pass through the light-transmitting adhesive layer 130, through Through the imaging hole 122 , through the target area MA of the protective layer 110 , and through the light-transmitting opening of the heat dissipation film 700 , a fingerprint inverse image is formed on the back side of the display module 900 .
  • the target area MA of the protective layer 110 of the light-transmitting protective film 100 substantially overlaps the fingerprint recognition area ZA of the display panel 200 . In this way, more light in the fingerprint identification area ZA can be transmitted to the back side of the display module 900 through the target area MA, thereby improving the imaging integrity of the back side of the display module 900 .
  • an embodiment of the present disclosure provides a display device 1000.
  • the display device 1000 includes a display module 900 and a fingerprint sensor 800 .
  • the fingerprint sensor 800 is located on the side of the light-transmitting protective film 100 of the display module 900 away from the display panel 200 .
  • the orthographic projection of the fingerprint sensor 800 on the display panel 200 of the display module 900 is at least located in the fingerprint recognition area ZA of the display panel 200 .
  • the area of the fingerprint sensor 800 perpendicular to the second direction Y is larger than the area of the fingerprint recognition area ZA, and is used to receive reflected light emitted from the fingerprint recognition area ZA, passing through the light-transmitting protective film 100 and forming an inverted image of the fingerprint.
  • the fingerprint sensor 800 is configured to obtain fingerprint information based on the reflected light that forms an inverted image of the fingerprint, thereby realizing the fingerprint recognition function.
  • the display panel 200 in the display device 1000 emits outgoing light for display.
  • the outgoing light passes through the touch functional layer 300, the polarizer 400, the optical glue 500 and the cover 600 in sequence, and is directed to the fingerprint surface, and Reflection occurs on the surface of the fingerprint, and the reflected light passes through the cover 600, the optical glue 500, the polarizer 400, the touch function layer 300 in sequence, passes through the gaps between the sub-pixels in the display panel 200, passes through the light-transmitting glue layer 130, and Through the imaging hole, the target area MA of the protective layer 100 and the light-transmitting opening of the heat dissipation layer 700, an inverted fingerprint image is formed on the surface of the fingerprint sensor 800.
  • fingerprint sensor 800 may be an image sensor.
  • the image sensor obtains a fingerprint image based on the inverted fingerprint image formed by reflected light, thereby realizing the fingerprint recognition function.
  • the thickness of the light-transmitting protective film 100 (the size in the second direction Y) will not be increased, while achieving the fingerprint imaging effect.
  • space for additional microhole arrays or collimator arrays is saved in the second direction Y, thereby achieving the effect of thinning the thickness of the display device 1000 .
  • the above-mentioned light-transmitting protective film 100 can be formed and then attached to the back side of the display panel 200 by utilizing the adhesiveness of the light-transmitting adhesive layer 130 , that is, the light-transmitting adhesive layer 130 can be manufactured separately.
  • embodiments of the present disclosure provide a method for manufacturing a light-transmitting protective film. As shown in FIG. 10 , the method of manufacturing a light-transmitting protective film includes steps S10 to S30.
  • Step S10 Form the protective layer 110.
  • the protective layer 110 has a target area MA; at least the target area MA is a light-transmitting area.
  • the protective layer 110 can be obtained by sequentially crystallizing, drying, extruding, cooling and shaping, drawing and winding the protective material.
  • the size of the protective layer 110 may be determined according to the size of the display device it is applied to, and the size of the protective layer 110 may be different for display devices of different sizes.
  • the above protective material 110 may be polyethylene terephthalate or other suitable materials, which is not limited here.
  • Step S20 Form a light-shielding pattern 120 on the protective layer 110.
  • the light-shielding pattern 120 defines a plurality of imaging holes 122 , the plurality of imaging holes 122 are spaced apart from each other, and the orthographic projections of the plurality of imaging holes 122 on the protective layer 110 are at least located in the target area MA.
  • a light-shielding material may be deposited using a deposition process to form a light-shielding material layer 920 on the protective layer 110 .
  • the light-shielding material may be a light-shielding metal material, such as molybdenum Mo or aluminum Al; it may also be other suitable materials, which are not limited here.
  • the light-shielding metal material can be deposited by magnetron sputtering (Sputter).
  • a photoresist layer 930 can be formed on the light-shielding material layer 920 .
  • the material of the photoresist layer 930 may include polyimide or other suitable materials.
  • the photoresist may be a positive photoresist or a negative photoresist, which is not limited here. The following takes the material of the photoresist layer including positive photoresist as an example for illustration.
  • the photoresist layer is exposed and developed using a mask to remove part of the photoresist layer 930 , leaving the photoresist part 931 .
  • an etching process is used to remove part of the light-shielding material layer 920 to form the imaging hole 122 while leaving the light-shielding portion 121 .
  • the etching process may be a material wet etching process, such as a plasma etching process.
  • the remaining photoresist portion 931 is removed to expose the light-shielding pattern 120 formed with the imaging hole 122 and the light-shielding portion 121 .
  • Step S30 Form a light-transmitting adhesive layer 130 located on the side of the light-shielding pattern 120 away from the protective layer 110.
  • a light-transmitting glue material layer is formed by coating a light-transmitting glue material on the side of the light-shielding pattern 120 away from the protective layer 110 . And by drying the light-transmitting glue material layer, a light-transmitting glue layer 130 covering the light-shielding pattern 120 is formed.
  • the light-transmitting glue layer 130 covers the side of the light-shielding pattern 120 away from the protective layer 110 and the surface of the protective layer 110 close to the side of the light-shielding pattern 120 .
  • the surface of the light-transmitting adhesive layer 130 away from the protective layer 110 may be flat.
  • the thickness of the light-transmitting protective film 100 (the size in the second direction Y) will not be increased, while achieving The effect of imaging fingerprints.
  • space for additional microhole arrays or collimator arrays is saved in the second direction Y, thereby achieving the effect of thinning the thickness of the display device.
  • the method of making a light-transmitting protective film may further include step S40 : forming a release film 140 covering the light-transmitting adhesive layer 130 .
  • the release film 140 can protect the light-transmitting adhesive layer 130 while maintaining the stickiness of the light-transmitting adhesive layer 130 , thereby facilitating the storage and transportation of the light-transmitting protective film 100 with the release film 140 attached thereto.
  • the release film 140 covers the surface of the light-transmitting adhesive layer 130 away from the light-shielding pattern 120 and the protective layer 110 to protect the light-transmitting adhesive layer 130 .
  • the release film 140 can protect the light-transmitting adhesive layer 130 while maintaining the stickiness of the light-transmitting adhesive layer 130, thereby facilitating the storage and transportation of the light-transmitting protective film 100 with the release film 140 attached thereto.
  • the release film 140 is peeled off, so that the light-transmitting adhesive layer 140 is bonded to the back side of the display panel 200 .
  • the size d6 of the release film 140 in the second direction Y may be 20 ⁇ m ⁇ 30 ⁇ m. For example: 20 ⁇ m, 22.3 ⁇ m, 23.6 ⁇ m, 25 ⁇ m, 26.8 ⁇ m, 28 ⁇ m or 30 ⁇ m.
  • the size d6 of the release film 140 in the second direction Y is greater than 30 ⁇ m, which may easily cause a waste of material.
  • the size d6 of the release film 140 in the second direction Y is less than 20 ⁇ m.
  • the release film 140 is too thin, which affects the light-transmitting adhesive layer 130
  • the protective effect is low.
  • the dimension d6 of the above-mentioned release film 140 in the second direction Y is between 20 ⁇ m and 30 ⁇ m, which can achieve both the protective effect of the light-transmitting adhesive layer 130 and the effect of material saving.
  • An embodiment of the present disclosure provides a method for manufacturing a display module. As shown in Figure 13, the manufacturing method of the display module includes: step S50 and step S60.
  • Step S50 Bond the light-transmitting adhesive layer 130 of the light-transmitting protective film 100 to the back side of the display panel 200.
  • the target area MA of the light-transmitting protective film 100 at least partially overlaps the fingerprint recognition area of the display panel 200 .
  • the adhesive layer 130 is bonded to the back side of the base substrate 210 of the display panel 200 using the adhesiveness of the light-transmitting adhesive layer 130.
  • step 40 further includes removing the release film 140 .
  • Step S60 Bond the heat dissipation layer 700 to the side of the light-transmitting protective film 100 away from the display panel 200.
  • the orthographic projection outline of the light-transmitting opening 710 of the heat dissipation layer 700 on the protective layer 110 of the light-transmitting protective film 100 surrounds the orthographic projection area of the plurality of imaging holes 122 of the light-transmitting protective film 100 on the protective layer 110 .
  • the heat dissipation layer 700 is bonded to the side of the light-transmitting protective film 100 away from the display panel 200 .

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

公开提供一种显示模组。该显示模组包括显示面板和透光保护膜。显示面板具有指纹识别区域。透光保护膜位于显示面板的背侧。其中，透光保护膜包括保护层、遮光图案和透光胶层。保护层具有目标区域；至少目标区域为透光区域；目标区域与指纹识别区域至少部分重叠。遮光图案位于保护层的一侧；遮光图案限定出多个成像孔，多个成像孔相互间隔设置，且多个成像孔在保护层上的正投影至少位于目标区域。透光胶层位于遮光图案远离保护层的一侧，透光胶层远离遮光图案一侧的表面与显示面板相接触。

Description

显示模组和显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种显示模组和显示装置。
背景技术
目前，显示装置具有指纹识别的功能，其中，一种指纹识别的原理为：利用指纹的波峰和波谷对光线吸收和反射的能量强度不同，借助指纹传感器通过感应能量差异，生成亮度不同的明暗条纹，来识别指纹。
发明内容
一方面，提供一种显示模组。该显示模组包括显示面板和透光保护膜。显示面板具有指纹识别区域。透光保护膜位于所述显示面板的背侧，所述背侧为所述显示面板的显示侧的对侧。其中，透光保护膜包括保护层、遮光图案和透光胶层。保护层具有目标区域；至少所述目标区域为透光区域；所述目标区域与所述指纹识别区域至少部分重叠。遮光图案位于所述保护层的一侧；所述遮光图案限定出多个成像孔，所述多个成像孔相互间隔设置，且所述多个成像孔在所述保护层上的正投影至少位于所述目标区域。透光胶层位于所述遮光图案远离所述保护层的一侧，所述透光胶层远离所述遮光图案一侧的表面与所述显示面板相接触。
在一些实施例中，所述多个成像孔在所述保护层上的正投影区域的外轮廓，与所述目标区域的边缘大致重合。
在一些实施例中，所述透光胶层覆盖所述遮光图案、以及所述保护层，其中，所述透光胶层填充成像孔。
在一些实施例中，所述成像孔为圆孔，所述成像孔的孔径尺寸为100μm～250μm。
在一些实施例中，相邻两个成像孔之间的间距为200μm～350μm。
在一些实施例中，所述遮光图案在垂直于所述保护层的方向上的尺寸为200nm～500nm。
在一些实施例中，所述保护层在垂直于所述保护层的方向上的尺寸，大于所述透光胶层在垂直于所述保护层的方向上的尺寸。
在一些实施例中，所述透光胶层在垂直于所述保护层的方向上的尺寸，与所述保护层在垂直于所述保护层的方向上的尺寸之间的比值为1：10～3：10。
在一些实施例中，该显示模组还包括散热膜。所述散热膜包括遮光材料；所述散热膜位于所述透光保护膜远离所述显示面板的一侧，所述散热膜开设 有透光开口。所述透光开口在所述透光保护膜的保护层上的正投影轮廓，包围所述透光保护膜的多个成像孔在所述保护层上的正投影区域。
又一方面，提供一种显示装置。该显示装置包括显示模组和指纹传感器。显示模组为如上任一实施例所述的显示模组。指纹传感器位于所述显示模组的透光保护膜远离所述显示面板的一侧，所述指纹传感器在所述显示模组的显示面板上的正投影，至少位于所述显示面板的指纹识别区域。
附图说明
为了更清楚地说明本公开中的技术方案，下面将对本公开一些实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例的附图，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。此外，以下描述中的附图可以视作示意图，并非对本公开实施例所涉及的产品的实际尺寸、方法的实际流程、信号的实际时序等的限制。
图1为根据一些实施例提供的显示装置的结构图；
图2为根据一些实施例提供的显示装置的结构图；
图3为根据一些实施例提供的显示面板的结构图；
图4为根据一些实施例提供的显示模组中透光保护膜的结构图；
图5为根据一些实施例提供的显示模组中遮光金属在保护层上的投影位置图；
图6为根据一些实施例提供的显示模组中遮光金属的结构图；
图7为根据一些实施例提供的显示模组中遮光金属在保护层上的投影位置图；
图8为根据一些实施例提供的显示模组中透光保护膜在与显示面板连接前的结构图；
图9为根据一些实施例提供的显示模组的结构图；
图10为根据一些实施例提供的透光保护膜的制作方法的流程图；
图11A～图11F为根据一些实施例提供的透光保护膜的制作方法在不同制作阶段的结构图；
图12为根据一些实施例提供的透光保护膜的制作方法的流程图；
图13为根据一些实施例提供的显示模组的制作方法的流程图。
具体实施方式
下面将结合附图，对本公开一些实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实 施例。基于本公开所提供的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
除非上下文另有要求，否则，在整个说明书和权利要求书中，术语“包括(comprise)”及其其他形式例如第三人称单数形式“包括(comprises)”和现在分词形式“包括(comprising)”被解释为开放、包含的意思，即为“包含，但不限于”。在说明书的描述中，术语“一个实施例(one embodiment)”、“一些实施例(some embodiments)”、“示例性实施例(exemplary embodiments)”、“示例(example)”、“特定示例(specific example)”或“一些示例(some examples)”等旨在表明与该实施例或示例相关的特定特征、结构、材料或特性包括在本公开的至少一个实施例或示例中。上述术语的示意性表示不一定是指同一实施例或示例。此外，所述的特定特征、结构、材料或特点可以以任何适当方式包括在任何一个或多个实施例或示例中。
以下，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该特征。在本公开实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在描述一些实施例时，可能使用了“耦接”和“连接”及其衍伸的表达。例如，描述一些实施例时可能使用了术语“连接”以表明两个或两个以上部件彼此间有直接物理接触或电接触。又如，描述一些实施例时可能使用了术语“耦接”以表明两个或两个以上部件有直接物理接触或电接触。然而，术语“耦接”或“通信耦合(communicatively coupled)”也可能指两个或两个以上部件彼此间并无直接接触，但仍彼此协作或相互作用。这里所公开的实施例并不必然限制于本文内容。
“A、B和C中的至少一个”与“A、B或C中的至少一个”具有相同含义，均包括以下A、B和C的组合：仅A，仅B，仅C，A和B的组合，A和C的组合，B和C的组合，及A、B和C的组合。
“A和/或B”，包括以下三种组合：仅A，仅B，及A和B的组合。
如本文中所使用，根据上下文，术语“如果”任选地被解释为意思是“当……时”或“在……时”或“响应于确定”或“响应于检测到”。类似地，根据上下文，短语“如果确定……”或“如果检测到[所陈述的条件或事件]”任选地被解释为是指“在确定……时”或“响应于确定……”或“在检测到[所陈述的条件或事件]时”或“响应于检测到[所陈述的条件或事件]”。
本文中“适用于”或“被配置为”的使用意味着开放和包容性的语言，其不排 除适用于或被配置为执行额外任务或步骤的设备。
另外，“基于”的使用意味着开放和包容性，因为“基于”一个或多个所述条件或值的过程、步骤、计算或其他动作在实践中可以基于额外条件或超出所述的值。
如本文所使用的那样，“约”、“大致”或“近似”包括所阐述的值以及处于特定值的可接受偏差范围内的平均值，其中所述可接受偏差范围如由本领域普通技术人员考虑到正在讨论的测量以及与特定量的测量相关的误差(即，测量***的局限性)所确定。
本文参照作为理想化示例性附图的剖视图和/或平面图描述了示例性实施方式。在附图中，为了清楚，放大了层和区域的厚度。因此，可设想到由于例如制造技术和/或公差引起的相对于附图的形状的变动。因此，示例性实施方式不应解释为局限于本文示出的区域的形状，而是包括因例如制造而引起的形状偏差。例如，示为矩形的蚀刻区域通常将具有弯曲的特征。因此，附图中所示的区域本质上是示意性的，且它们的形状并非旨在示出设备的区域的实际形状，并且并非旨在限制示例性实施方式的范围。
相关技术中，如图1所示，有机发光二极管(Organic Light Emitting Diode，简称OLED)显示装置000包括显示面板010、位于显示面板010显示侧且沿远离显示面板010方向依次叠置的触控功能层020、偏光片030、光学胶040和保护盖板050，以及位于显示面板010背侧且沿远离显示面板010方向依次叠置的透光保护膜060、散热层070、光学成像层080和指纹传感器090。其中，光学成像层080可以为准直器阵列或微孔阵列。
OLED显示装置000具有指纹识别功能。如图1所示，OLED显示装置000对指纹识别的原理为：显示面板010的发出的光线照射到人手指纹ZW形成的反射光线(附图中均以虚线箭头表示)，透过显示面板010内部子像素间的间隙入射到显示面板010远离保护盖板050一侧的准直器阵列或微孔阵列，使得反射光在指纹传感器090上成像，指纹传感器090基于形成的图像获取指纹信息，实现对指纹的识别。
然而，准直器阵列或微孔阵列会造成显示装置000在第二方向Y上厚度较厚的问题。
基于此，本公开的一些实施例提供一种显示模组和显示装置。以下分别进行介绍。
如图2所示，本公开实施例提供一种显示装置1000。该显示装置可以是显示不论运动(例如，视频)还是固定(例如，静止图像)的且不论文字还是的图 像的任何装置。更明确地说，预期所述实施例可实施在多种电子装置中或与多种电子装置关联，所述多种电子装置例如(但不限于)移动电话、无线装置、个人数据助理(PDA)、手持式或便携式计算机、GPS接收器/导航器、相机、MP4视频播放器、摄像机、游戏控制台、手表、时钟、计算器、电视监视器、平板显示器、计算机监视器、汽车显示器(例如，里程表显示器等)、导航仪、座舱控制器和/或显示器、相机视图的显示器(例如，车辆中后视相机的显示器)、电子相片、电子广告牌或指示牌、投影仪、建筑结构、包装和美学结构(例如，对于一件珠宝的图像的显示器)等。
该显示装置1000包括框架、设置于框架内的显示面板200、电路板、显示驱动IC(Integrated Circuit，集成电路)以及其他电子配件等。
上述显示面板200可以为：OLED显示面板、量子点发光二极管(Quantum Dot Light Emitting Diodes，简称QLED)显示面板、微发光二极管(Micro Light Emitting Diodes，简称Micro LED)显示面板等，本公开对此不做具体限定。
本公开以下实施例均是以上述显示面板200为OLED显示面板为例，对本公开进行说明，但应当认为并不限于OLED显示装置。
在一些实施例中，如图2所示，显示装置1000的主要结构包括依次设置的显示面板200、触控功能层300、抗反射结构例如偏光片400、光学胶(Optically Clear Adhesive，简称OCA)层500和盖板600。在一些实施例中，抗反射结构可以包括彩色滤光片和黑矩阵。
其中，显示面板200包括衬底基板210和位于衬底基板210上的发光功能层220。另外，显示面板200还可以把包括用于封装发光功能层220的封装层(图未示)。此处，封装层可以为封装薄膜，也可以为封装基板。
衬底基板210的材料例如可以是聚对苯二甲酸乙二酯(Polyethylene terephthalate，简称PET)、聚酰亚胺(Polyimide，简称PI)、环烯烃聚合物(Cyclo Olefin Polymer，简称COP)等。
如图3所示，上述显示面板200包括：显示区域(active area，AA；简称AA区；也可称为有效显示区域)和围绕AA区一圈设置的周边区域。
上述显示面板200在AA区中包括多种颜色的子像素(sub Pixel)P，该多种颜色的子像素至少包括第一颜色子像素、第二颜色子像素和第三颜色子像素，第一颜色、第二颜色和第三颜色可以为三基色(例如红色、绿色和蓝色)。
为了方便说明，本公开中上述多个子像素P是以矩阵形式排列为例进行的说明。在此情况下，沿第一方向X排列成一排的子像素P称为同一行子像 素；沿第二方向Y排列成一排的子像素P称为同一列子像素。
每个子像素P包括设置在衬底210上的发光器件和驱动电路，驱动电路包括多个薄膜晶体管。发光器件包括阳极、发光层、以及阴极，阳极和驱动电路的多个薄膜晶体管中作为驱动晶体管的薄膜晶体管的漏极电连接。
在一些实施例中，阳极和驱动电路的多个薄膜晶体管中作为驱动晶体管的薄膜晶体管的漏极电连接时，还通过一个转接电极进行电连接，转接电极位于漏极所在膜层和阳极所在膜层之间。
当显示装置1000为电致发光显示装置时，显示装置1000可以是顶发射型显示装置，在此情况下，靠近衬底210的阳极呈不透明，远离衬底210的阴极呈透明或半透明；显示装置1000也可以是底发射型显示装置，在此情况下，靠近衬底210的阳极呈透明或半透明，远离衬底210的阴极呈不透明。
在一些实施例中，如图2所示，触控功能层300直接设置在显示面板200上，这样可以将显示面板200视作触控功能层300的衬底基板，这种结构有利于实现显示装置1000的轻薄化。
在此基础上，结合图2和图9所示，本公开的一些实施例提供一种显示模组900。显示模组900包括显示面板200和透光保护膜100。
其中，显示面板200具有指纹识别区域ZA，指纹识别区域ZA被配置为采集用户的指纹信息。指纹信息可以是指纹图像、也可以是能够体现指纹特征的光信息或电信息，此处不作限定。应当理解的，用户的手指放置在指纹识别区域ZA内，显示模组900即可采集到用户的指纹信息。
指纹识别区域ZA位于至少部分显示区域AA内。如图9所示，在一些示例中，指纹识别区域ZA为局部显示区域AA，即只有在特定的显示区域AA才能够采集用户的指纹信息。在另一些示例中，指纹识别区域ZA为显示区域AA，即整个显示区域AA均可以用于采集用户的指纹信息。
在指纹识别区域ZA为局部显示区域AA的情况下，指纹识别区域ZA可以位于显示区域AA的中央位置或边缘位置。指纹识别区域ZA的外轮廓形状可以是矩形、圆形、椭圆形、正多边形等等，此处不作限定。
透光保护膜100位于显示面板200的背侧，显示面板200的背侧为与显示面板200的显示侧相对的一侧。例如显示面板200的显示侧为靠近保护盖板600的一侧，显示面板200的背侧为远离保护盖板600的一侧。
如图4所示，透光保护膜100包括保护层110、遮光图案120和透光胶层130。其中，遮光图案120位于保护层110与透光胶层130之间，透光胶层130位于遮光图案120与显示面板200之间。
保护层110至少位于显示区域AA内。在一些示例中，保护层110一部分位于显示区域AA内，另一部分位于周边区域内。在另一些实施例中，保护层110与显示区域AA重合。在另一些实施例中，保护层110仅位于部分显示区域AA内。
保护层110的材料可以包括PET，也可以包括其他合适的材料，此处不作限定。
保护层110在第二方向Y上的尺寸d1可以为50μm～100μm。例如：50μm、62μm、73.4μm、88μm、95.5μm或100μm。保护层110在第二方向Y上的尺寸d1大于100μm的情况下，会降低从保护层110中目标区域透过的光量，不利于显示模组900的成像效果。保护层110在第二方向Y上的尺寸d1小于50μm的情况下，目标区域MA之外的区域透光率较高，会增加从保护层110中目标区域MA之外的区域透过的光量，容易对成像造成干扰。因此，保护层110在第二方向Y上的尺寸d1处于50μm～100μm之间，可以提高显示模组900的成像效果。
保护层110包括目标区域MA。目标区域MA与指纹识别区域ZA至少部分重叠，例如目标区域MA与指纹识别区域ZA大致重叠。其中，目标区域MA可以是保护层110的部分区域。目标区域MA为透光区域，目标区域MA的透光率可以大于90％。
在一些示例中，保护层110可以全部为透光区域，即目标区域MA和目标区域MA之外的区域均为透光区域。
在另一些示例中，目标区域MA为透光区域，保护层110中除目标区域MA之外的区域的透光率小于目标区域MA的透光率，例如目标区域MA之外的区域的透光率可以小于60％，甚至小于30％，此处不作限定。
遮光图案120位于保护层110与显示面板200之间，且遮光图案120可以与保护层110直接接触。
遮光图案120至少部分位于目标区域MA内。可以理解为，遮光图案120在保护层110上的正投影，至少部分位于目标区域MA内。如图5所示，在一些示例中，一部分遮光图案的正投影120’位于目标区域MA内，另一部分遮光图案的正投影120’位于目标区域MA外。在另一些示例中，遮光图案的正投影120’全部位于目标区域MA内。
遮光图案120的材料，可以包括金属材料，例如钼Mo或铝Al；也可以包括其他遮光的有机材料或无机材料，例如树脂。
如图4所示，遮光图案120在第二方向Y上的尺寸d2可以为 200nm～500nm。例如：200nm、240nm、276nm、312nm、387.3nm、400nm、444nm、479nm或500nm。遮光图案120在第二方向Y上的尺寸d2大于500nm，容易增加透光胶层130远离保护层110一侧的段差，降低透光保护膜100与显示面板200之间粘接的牢固性。遮光图案120在第二方向Y上的尺寸d2小于200nm，容易降低遮光图案120的遮光性能，降低成像孔122的成像效果。因此，遮光图案120在第二方向Y上的尺寸d2处于200nm～500nm之间，可以兼具提高透光保护膜100与显示面板200之间粘接的牢固性和提高显示模组900的成像效果。
如图6所示，遮光图案120包括遮光部121、以及开设于遮光部121上的成像孔122。成像孔122的数量可以为多个。其中，一个成像孔122被配置为：使从显示面板200侧射出的部分光线穿过，从而在遮光图案120远离显示面板200的一侧形成与穿过的光线对应的倒像。这样，多个成像孔122配合，从而在遮光图案120远离显示面板200的一侧形成完整的指纹倒像。
上述成像孔122可以是圆孔、椭圆孔、矩形孔、正多边形孔、菱形孔等等，此处不作限定，应当理解的是任何能够实现小孔成像原理的孔，均属于本公开实施例中的成像孔122。
如图5和图7所示，遮光图案120在保护层110上的正投影120’包括：成像孔122在保护层110上的正投影122’、以及遮光部121在保护层110上的正投影121’。成像孔122在保护层110上的正投影122’至少位于目标区域MA。在一些示例中，如图7所示，成像孔122在保护层110上的正投影122’全部位于目标区域MA。在另一些实施例中，如图5所示，成像孔122在保护层110上的正投影122’部分位于目标区域MA内，例如处于边缘位置的成像孔122在保护层110上的正投影122’，其中一部分正投影位于目标区域MA内，另一部分正投影位于目标区域MA外。
如图6所示，在一些实施例中，成像孔122为圆孔，成像孔122的孔径尺寸d3为100μm～250μm。例如：100μm、128μm、167μm、203μm、222.2μm、242μm或250μm。成像孔122的孔径尺寸d3大于250μm的情况下，成像孔122中穿过的干扰光线较多，会导致在遮光图案120另一侧形成的指纹倒像不清晰，降低成像效果。成像孔122的孔径尺寸d3小于100μm的情况下，光线穿过成像孔122的光量少，且光线容易引发衍射效应的干扰，降低成像效果。因此，成像孔122的孔径尺寸d3处于100μm～250μm之间，可以提高显示模组900的成像效果。
需要说明的是，多个成像孔122的孔径尺寸可以是统一的尺寸，也可以 多个成像孔122具有多个不同的孔径尺寸。例如：多个成像孔122的孔径尺寸均为200μm。又例如：一些成像孔122的孔径尺寸为150μm，另一些成像孔122的孔径尺寸为200μm。
如图6所示，多个成像孔122之间可以相互间隔设置。在一些实施例中，相邻两个成像孔122之间的间距d4为200μm～350μm。例如：200μm、228μm、267μm、303μm、322.2μm、342μm或350μm。相邻两个成像孔122之间的间距d4大于350μm的情况下，经由多个成像孔122形成的倒像之前容易拼接不完整，无法得到完整的指纹倒像。相邻两个成像孔122之间的间距d4小于200μm的情况下，经由多个成像孔122形成的倒像之间重叠度较高，光线利用率较低。因此，相邻两个成像孔122之间的间距d4处于200μm～350μm之间，可以兼具得到完整的指纹倒像且提高对光线的利用率。
需要说明的是，遮光图案120中成像孔122之间的间距可以是统一的尺寸，也可以不同成像孔122之间具有多个不同的间距尺寸。例如：多个成像孔122之间，相邻两个成像孔122之间的间距均为250μm。又例如：一些相邻两个成像孔122之间的间距为280μm，另一些相邻两个成像孔122之间的间距为320μm。
如图4所示，透光胶层130可以在遮光图案120远离保护层110的一侧，并覆盖遮光图案120。在一些实例中，透光胶层130还覆盖保护层110。其中，透光胶层130远离保护层110一侧的表面可以为平面、曲面或粗糙面，此处不作限定。
透光胶层130的材料可以包括有机材料，或者其他合适的材料。在一些示例中，透光胶层130可以为压敏胶(Pressure Sensitive Adhesives，PSA)。透光胶层130的透光率可以大于90％。
如图4所示，在一些实施例中，透光胶层130远离遮光图案120和保护层110的表面为粘接面，粘接面为平面。
透光胶层130可以由具有粘性的材料制成，透光胶层130靠近保护层110和遮光图案120的一侧分别与保护层110和遮光图案120粘接。透光胶层130远离遮光图案120和保护层110的表面可以配置为与显示面板200粘接。
其中，显示面板200的背侧表面为平面，透光胶层130远离遮光图案120和保护层110的表面为平面，能够较好的与显示面板200粘接，提高透光保护膜100与显示面板200的连接强度。
透光胶层130在第二方向Y上的尺寸d5可以为10μm～15μm。例如：10μm、11.4μm、12.4μm、13.5μm、14.6μm或15μm。透光胶层130在第二方向Y上 的尺寸d5大于15μm的情况下，会降低透光胶层130的透光率，不利于显示模组900的成像效果。透光胶层130在第二方向Y上的尺寸d5小于10μm，容易在覆盖遮光图案120的位置出现段差，降低透光胶层130与显示面板200之间粘接的牢固性。因此，透光胶层130在第二方向Y上的尺寸d5处于10μm～15μm之间，可以兼顾透光胶层130与显示面板200粘接的牢固性和显示模组900的成像效果。
在一些实施例中，透光胶层130在第二方向Y上的尺寸d5可以为15μm，保护层110在第二方向Y上的尺寸d1可以为50μm。即，透光胶层130在第二方向Y上的尺寸，与保护层110在第二方向Y上的尺寸之间的比值可以为3：10。
在另一实施例中，透光胶层130在第二方向Y上的尺寸d5可以为10μm，保护层110在第二方向Y上的尺寸d1可以为100μm。即，透光胶层130在第二方向Y上的尺寸，与保护层110在第二方向Y上的尺寸之间的比值可以为1：10。
综上，结合保护层110在第二方向Y上的尺寸d1可以为50μm～100μm，透光胶层130在第二方向Y上的尺寸d5可以为10μm～15μm。透光胶层130在第二方向Y上的尺寸d5，与保护层110在第二方向Y上的尺寸d1之间的比值可以处于1：10～3：10的范围内。
从显示面板200侧射向透光保护膜100的光线，穿过透光保护膜100的顺序依次为：先透过透光胶层130，再穿过成像孔122，最后透过保护层130的目标区域MA，从而在透光保护膜100远离显示面板200的一侧形成指纹倒像。
本公开实施例提供的显示模组900，由于将成像孔122设计在透光保护膜100内部，不会增加透光保护膜100的厚度(第二方向Y上的尺寸)，同时实现对指纹成像的效果。相较于相关技术中图1的结构而言，在第二方向Y上节省了额外设置微孔阵列或准直器阵列的空间，从而起到减薄显示模组900的效果，便于显示装置1000的轻薄化设计。
如图7所示，在一些实施例中，多个成像孔122在保护层110上的正投影区域的外轮廓LK，与目标区域MA的边缘大致重合。
上述多个成像孔122在保护层110上的正投影区域，是指包围各个成像孔122在保护层110上的正投影122’的区域，即包围多个成像孔122在保护层110上的多个正投影122’的区域。
上述多个成像孔122在保护层110上的正投影区域的外轮廓LK与目标区 域MA的边缘大致重合，可以理解为，遮光图案120的多个成像孔122均位于目标区域MA内。
在一些示例中，遮光图案120在保护层110上的正投影可以超出目标区域MA，遮光图案120中的多个成像孔122位于目标区域MA内。
在另一些实施例中，如图5所示，多个成像孔122在保护层110上的正投影区域的外轮廓LK，包围目标区域MA的边缘设置。
即，上述多个成像孔122在保护层110上的正投影区域一部分覆盖目标区域MA，另一部分位于目标区域MA的边缘的外侧。这样，在遮光图案120与保护层110之间存在轻微位置误差的情况下，同样能够确保遮光图案120在保护层110上的正投影位于目标区域MA内。
本实施例能够承担实际制作工艺中，遮光图案120与保护层110之间存在轻微位置误差，提高透光保护膜100的良率。
如图4所示，在一些实施例中，透光胶层130覆盖遮光图案120、以及保护层110，其中，透光胶层130填充成像孔122。
本实施例中，成像孔122内部填充有部分透光胶层130，由于透光胶层130本身具有较高的透光率，因此不会对成像孔122的成像效果造成影响。
另外，本实施例光线经透光胶层130和保护层110透过透光保护膜100，相较于光线经透光胶层130、空气和保护层110透过透光保护膜100而言，能够减少光线的传输介质，进而减少两个介质之间由于全反射而损失的透光量，提高对指纹倒像的成像效率。
如图9所示，在一些实施例中，显示模组900还包括散热膜700。散热膜700包括遮光材料；散热膜700可以为超清洁泡沫层(Super Clean Foam，SCF)。散热膜700可以为单层结构，也可以为复合层结构，具有遮光、散热等功能。
在一些示例中，散热膜700包括自远离显示面板200背侧依次叠置的粘连层、缓冲层和散热层。其中，粘连层可以包括网纹胶，或其他合适的材料。散热层可以包括导热金属材料，例如铜Cu；也可以包括石墨烯材料，还可以包括其他合适的材料。缓冲层可以包括泡棉材料，或其他合适的材料。
散热膜700可以与透光保护膜100的保护层110的背侧粘接，从而实现与透光保护膜100的连接。例如散热膜700的粘连层与透光保护膜100的保护层110的背侧粘接。
散热膜700位于透光保护膜100远离显示面板200的一侧，散热膜700开设有透光开口710。透光开口710在透光保护膜100的保护层110上的正投影轮廓，包围透光保护膜100的多个成像孔122在保护层110上的正投影区 域。
在一些示例中，透光开口710在透光保护膜100的保护层110上的正投影轮廓，可以与透光保护膜100的多个成像孔122在保护层110上的正投影区域的边缘大致重合。
透光开口710能够使穿过成像孔122的反射光线穿过，且能够阻挡目标区域MA之外的光线，防止目标区域MA之外的光线，干扰成像，从而提高成像的可靠性。
在另一些示例中，透光开口710在透光保护膜100的保护层110上的正投影轮廓，可以覆盖透光保护膜100的多个成像孔122在保护层110上的正投影区域，以及该正投影区域的周边区域。这样，在实际制作中在一定程度内能够克服透光开口710与目标区域MA对位的误差，提高显示模组900的制作良率。
综上所述，显示面板200发射的光线，经指纹识别区域ZA上的指纹反射，反射光线能够穿过显示面板200中子像素P之间的间隙，进而依次透过透光胶层130、穿过成像孔122、透过保护层110的目标区域MA、并穿过散热膜700透光开口，在显示模组900的背侧形成指纹倒像。
其中，透光保护膜100的保护层110的目标区域MA与显示面板200的指纹识别区域ZA大致重叠。这样，指纹识别区域ZA内的光线能够较多的通过目标区域MA透射至显示模组900的背侧，进而提高显示模组900背侧的成像的完整性。
如图2所示，本公开实施例提供一种显示装置1000。显示装置1000包括显示模组900和指纹传感器800。
指纹传感器800位于显示模组900的透光保护膜100远离显示面板200的一侧。指纹传感器800在显示模组900的显示面板200上的正投影，至少位于显示面板200的指纹识别区域ZA。
指纹传感器800在垂直于第二方向Y的面积大于指纹识别区域ZA的面积，并用于接收从指纹识别区域ZA射出，穿过透光保护膜100且能够形成指纹倒像的反射光线。指纹传感器800被配置为，基于形成指纹倒像的反射光线，获取指纹信息，从而实现指纹识别功能。
如图2所示，显示装置1000中的显示面板200射出用于显示的出射光线，出射光线依次经过触控功能层300、偏光片400、光学胶500和盖板600，射向指纹表面，并在指纹表面发生反射，反射光线依次经过盖板600、光学胶500、偏光片400、触控功能层300，穿过显示面板200中子像素之间的间隙、 透过透光胶层130、穿过成像孔、透过保护层100的目标区域MA和散热层700的透光开口，在指纹传感器800的表面形成指纹倒像。
在一些示例中，指纹传感器800可以为图像传感器。图像传感器基于反射光线形成的指纹倒像，得到指纹图像，从而实现指纹识别功能。
需要说明的是，指纹传感器800与显示模组900之间，可以还包括其他透光的功能膜层，也可以不包括其他的功能膜层，此处不作限定。
显示装置1000中由于将成像孔122设计在透光保护膜100内部，不会增加透光保护膜100的厚度(第二方向Y上的尺寸)，同时实现对指纹成像的效果。相较于相关技术中图1的结构而言，在第二方向Y上节省了额外设置微孔阵列或准直器阵列的空间，从而起到减薄显示装置1000厚度的效果。
上述透光保护膜100可以是制作成型后，利用透光胶层130的粘性贴附在显示面板200背侧，即透光胶层130可以单独制作。
因此，本公开实施例提供一种透光保护膜的制作方法。如图10所示，透光保护膜的制作方法包括步骤S10～步骤S30。
步骤S10：形成保护层110。保护层110具有目标区域MA；至少目标区域MA为透光区域。
如图11A所示，保护层110可以通过对保护材料依次进行结晶、干燥、挤出成型、冷却定型、牵引和卷取后得到。保护层110的尺寸可以根据所应用于的显示装置的尺寸而确定，不同尺寸的显示装置对应的保护层110的尺寸可以不同。
上述保护材料110可以为聚对苯二甲酸乙二酯，也可以是其他合适的材料，此处不作限定。
步骤S20：在保护层110上，形成遮光图案120。遮光图案120限定出多个成像孔122，多个成像孔122相互间隔设置，且多个成像孔122在保护层110上的正投影至少位于目标区域MA。
在一些示例中，如图11B所示，可以利用沉积工艺沉积遮光材料，在保护层110上形成遮光材料层920。遮光材料可以是遮光金属材料，例如钼Mo或铝Al；也可以是其他合适的材料，此处不作限定。
在遮光材料为钼Mo或铝Al的情况下，可以利用磁控溅射(Sputter)的方式沉积遮光金属材料。
如图11C所示，在遮光材料层920上可以涂覆形成光刻胶层930。光刻胶层930的材料可以包括聚酰亚胺，也可以是其他合适的材料。光刻胶可以是正性光刻胶也可以是负性光刻胶，此处不作限定。下文以光刻胶层的材料 包括正性光刻胶为例，进行举例说明。
如图11D所示，利用掩膜版对光刻胶层进行曝光、显影去除部分光刻胶层930，保留光刻胶部931。之后，如图11E所示，利用刻蚀工艺去除部分遮光材料层920，形成成像孔122，并保留遮光部121。其中，刻蚀工艺可以材料湿法刻蚀工艺，例如等离子体刻蚀工艺。
如图11F所示，去除残留的光刻胶部931，暴露形成有成像孔122和遮光部121的遮光图案120。
步骤S30：形成位于遮光图案120远离保护层110一侧的透光胶层130。
通过在遮光图案120远离保护层110的一侧涂覆透光胶材料，形成透光胶材料层。并通过对透光胶材料层进行干燥，形成覆盖遮光图案120的透光胶层130。
在一些示例中，如图4所示，透光胶层130覆盖遮光图案120远离保护层110的一侧、以及保护层110靠近遮光图案120一侧的表面。
其中，透光胶层130远离保护层110一侧的表面可以是平面。
本公开实施例提供的透光保护膜的制作方法，由于将成像孔122设计在透光保护膜100内部，不会增加透光保护膜100的厚度(第二方向Y上的尺寸)，同时实现对指纹成像的效果。相较于相关技术中图1的结构而言，在第二方向Y上节省了额外设置微孔阵列或准直器阵列的空间，从而起到减薄显示装置厚度的效果。
如图12所示，在一些实施例中，透光保护膜的制作方法在步骤S30之后，还可以包括步骤S40：形成覆盖透光胶层130的离型膜140。
如图8所示，离型膜140能够保护透光胶层130，同时保持透光胶层130的粘性，便于贴附有离型膜140的透光保护膜100的存储并运输。
在透光胶层130未与显示面板200粘接之前，离型膜140覆盖透光胶层130远离遮光图案120和保护层110一侧的表面，以保护透光胶层130。
离型膜140能够保护透光胶层130，同时保持透光胶层130的粘性，便于贴附有离型膜140的透光保护膜100的存储并运输。在透光保护膜100与显示面板200粘接之前，撕除离型膜140，使得透光胶层140与显示面板200的背侧粘接。
离型膜140在第二方向Y上的尺寸d6可以为20μm～30μm。例如：20μm、22.3μm、23.6μm、25μm、26.8μm、28μm或30μm。离型膜140在第二方向Y上的尺寸d6大于30μm容易造成材料的浪费，离型膜140在第二方向Y上的尺寸d6小于20μm，离型膜140太薄，对透光胶层130保护效果较低。上述 离型膜140在第二方向Y上的尺寸d6处于20μm～30μm之间，可以兼顾透光胶层130保护效果和节约材料的效果。
本公开实施例提供一种显示模组的制作方法。如图13所示，显示模组的制作方法包括：步骤S50和步骤S60。
步骤S50：将透光保护膜100的透光胶层130粘接于显示面板200的背侧。其中，透光保护膜100的目标区域MA与显示面板200的指纹识别区域至少部分重叠。
将透光保护膜100的目标区域MA与显示面板200的指纹识别区域对位后，利用透光胶层130的粘性与显示面板200的衬底基板210的背侧粘接。
在透光保护膜100还具有离型膜140的情况下，在步骤40之前还包括去除撕除离型膜140。
步骤S60：将散热层700粘接于透光保护膜100远离显示面板200的一侧。其中，散热层700的透光开口710在透光保护膜100的保护层110上的正投影轮廓，包围透光保护膜100的多个成像孔122在保护层110上的正投影区域。
将透光保护膜100的目标区域MA与散热层700的透光开口710对位后，将散热层700粘接于透光保护膜100远离显示面板200的一侧。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (10)

  1. 一种显示模组，包括：
    显示面板，具有指纹识别区域；
    透光保护膜，位于所述显示面板的背侧，所述背侧为所述显示面板的显示侧的对侧；其中，所述透光保护膜，包括：
    保护层，具有目标区域；至少所述目标区域为透光区域；所述目标区域与所述指纹识别区域至少部分重叠；
    遮光图案，位于所述保护层的一侧；所述遮光图案限定出多个成像孔，所述多个成像孔相互间隔设置，且所述多个成像孔在所述保护层上的正投影至少位于所述目标区域；
    透光胶层，位于所述遮光图案远离所述保护层的一侧，所述透光胶层远离所述遮光图案一侧的表面与所述显示面板相接触。
  2. 根据权利要求1所述的显示模组，其中，所述多个成像孔在所述保护层上的正投影区域的外轮廓，与所述目标区域的边缘大致重合。
  3. 根据权利要求1或2所述的显示模组，其中，所述透光胶层覆盖所述遮光图案、以及所述保护层，其中，所述透光胶层填充成像孔。
  4. 根据权利要求1～3中任一项所述的显示模组，其中，所述成像孔为圆孔，所述成像孔的孔径尺寸为100μm～250μm。
  5. 根据权利要求1～4中任一项所述的显示模组，其中，相邻两个成像孔之间的间距为200μm～350μm。
  6. 根据权利要求1～5中任一项所述的显示模组，其中，所述遮光图案在垂直于所述保护层的方向上的尺寸为200nm～500nm。
  7. 根据权利要求1～6中任一项所述的显示模组，其中，所述保护层在垂直于所述保护层的方向上的尺寸，大于所述透光胶层在垂直于所述保护层的方向上的尺寸。
  8. 根据权利要求1～7中任一项所述的显示模组，其中，所述透光胶层在垂直于所述保护层的方向上的尺寸，与所述保护层在垂直于所述保护层的方向上的尺寸之间的比值为1：10～3：10。
  9. 根据权利要求1～8中任一项所述的显示模组，还包括：
    散热膜，所述散热膜包括遮光材料；所述散热膜位于所述透光保护膜远离所述显示面板的一侧，所述散热膜开设有透光开口；
    所述透光开口在所述透光保护膜的保护层上的正投影轮廓，包围所述透光保护膜的多个成像孔在所述保护层上的正投影区域。
  10. 一种显示装置，包括：
    显示模组，所述显示模组为如权利要求1～9中任一项所述的显示模组；
    指纹传感器，位于所述显示模组的透光保护膜远离所述显示面板的一侧，所述指纹传感器在所述显示模组的显示面板上的正投影，至少位于所述显示面板的指纹识别区域。
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