WO2024077535A1 - 显示模组、显示装置 - Google Patents

显示模组、显示装置 Download PDF

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Publication number
WO2024077535A1
WO2024077535A1 PCT/CN2022/125003 CN2022125003W WO2024077535A1 WO 2024077535 A1 WO2024077535 A1 WO 2024077535A1 CN 2022125003 W CN2022125003 W CN 2022125003W WO 2024077535 A1 WO2024077535 A1 WO 2024077535A1
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WO
WIPO (PCT)
Prior art keywords
cover plate
substrate
orthographic projection
display module
module according
Prior art date
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PCT/CN2022/125003
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English (en)
French (fr)
Inventor
魏俊波
杨盛际
卢鹏程
黄冠达
白枭
田元兰
Original Assignee
京东方科技集团股份有限公司
云南创视界光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 云南创视界光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2022/125003 priority Critical patent/WO2024077535A1/zh
Publication of WO2024077535A1 publication Critical patent/WO2024077535A1/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

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a display module and a display device including the display module.
  • Micro-OLED display is a new type of OLED display based on silicon substrate. Silicon-based OLED has advantages such as small size and high resolution, and can be made through mature integrated circuit technology to achieve active addressing of pixels. Micro-silicon-based OLED display can be used in near-eye display, virtual reality (VR), augmented reality (AR) and other fields.
  • VR virtual reality
  • AR augmented reality
  • a display module comprising: an array substrate, including a substrate; a first cover plate, located at a light-emitting side of the array substrate; a second cover plate, located at a side of the first cover plate away from the array substrate; and a first light shielding layer, located at a side of the first cover plate close to the array substrate.
  • the orthographic projection of the first light shielding layer on the substrate falls within the orthographic projection of the first cover plate on the substrate, and the first light shielding layer is arranged around the edge of the first cover plate.
  • the first light shielding layer is annular in shape and is disposed around four edges of the first cover plate, the array substrate includes a display area, and the orthographic projection of the display area on the substrate does not overlap with the orthographic projection of the first light shielding layer on the substrate.
  • the array substrate further includes a second light shielding layer, which is at least arranged around a boundary of the display area, and an orthographic projection of the second light shielding layer on the substrate falls within an orthographic projection of the display area on the substrate.
  • the thickness of the first light shielding layer is greater than the thickness of the second light shielding layer.
  • the first light-shielding layer and the second light-shielding layer are selected from one of the following: ink, black conductive glue, black resin, and a stacked structure of at least two color filter layers with different colors.
  • the first light-shielding layer is disposed around four edges of the first cover plate, the array substrate includes a display area, and an orthographic projection of the display area on the substrate partially overlaps with an orthographic projection of the first light-shielding layer on the substrate.
  • the first light-shielding layer includes a first part and a second part, the orthographic projection of the first part on the substrate falls within the orthographic projection of the display area on the substrate, the orthographic projection of the second part on the substrate does not overlap with the orthographic projection of the display area on the substrate, and the thickness of the first part is less than the thickness of the second part.
  • the second cover plate includes a first surface facing the first cover plate, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface, the adhesive is arranged on the side surface of the second cover plate, the second cover plate is adhered to the fixing device via the adhesive, and a portion of the surface of the first cover plate away from the array substrate is in contact with the adhesive, and the first cover plate is adhered to the second cover plate via the adhesive.
  • an orthographic projection of the adhesive on the substrate falls within an orthographic projection of the first light shielding layer on the substrate.
  • an orthographic projection of the adhesive on the substrate falls within an orthographic projection of the fixture on the substrate.
  • the display module further includes a fixing device, and edges of the first cover plate and the second cover plate are in direct contact with the fixing device.
  • a thickness of the second cover plate is smaller than a thickness of the first cover plate.
  • a distance between the first cover plate and the second cover plate is smaller than a distance between the first cover plate and the array substrate.
  • the second cover plate includes a first surface facing the first cover plate, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface;
  • the first cover plate includes a third surface facing the array substrate, a fourth surface opposite to the third surface, and a side surface connecting the third surface and the fourth surface; the roughness of the side surface of the second cover plate is greater than the roughness of the side surface of the first cover plate.
  • the roughness of the third surface of the first cover plate is greater than the roughness of the fourth surface of the first cover plate.
  • the array substrate further comprises a binding area, wherein the binding area is provided with a binding electrode.
  • the orthographic projection of the first cover plate on the substrate does not overlap with the orthographic projection of the binding electrode on the substrate, and the orthographic projection of the second cover plate on the substrate at least partially overlaps with the orthographic projection of the binding electrode on the substrate.
  • the first light shielding layer includes a first section, a second section, a third section, and a fourth section connected end to end in sequence, and the distance between the orthographic projection of the first section on the substrate and the orthographic projection of the binding electrode on the substrate is smaller than the distance between the orthographic projections of the second section, the third section, and the fourth section on the substrate and the orthographic projections of the binding electrode on the substrate, respectively.
  • the width of the first section along the first direction is smaller than the width of the third section along the first direction, and the width of the first section along the first direction is smaller than the width of the second section and the fourth section along the second direction, and the first direction intersects with the second direction.
  • the display module further comprises a lens located on a side of the second cover plate away from the first cover plate.
  • the lens comprises a first end and a second end opposite to the first end in a direction perpendicular to the principal optical axis of the lens.
  • the orthographic projection of the first end on the substrate falls outside the orthographic projection of the second cover plate on the substrate but falls within the orthographic projection of the first cover plate on the substrate, and the orthographic projection of the second end on the substrate falls outside the orthographic projection of the second cover plate on the substrate but falls within the orthographic projection of the first cover plate on the substrate.
  • the orthographic projection of the second cover plate on the substrate falls within the orthographic projection of the first cover plate on the substrate.
  • a display device which includes the display module described in any of the above embodiments.
  • FIG1 is a schematic plan view showing a partial structure of a display module according to an embodiment of the present disclosure
  • FIG2 shows a schematic cross-sectional view taken along line AA′ of FIG1 ;
  • FIG3 shows a schematic structural diagram of a display module according to an embodiment of the present disclosure
  • FIG4 is a schematic cross-sectional view of a partial structure of a display module according to an embodiment of the present disclosure
  • FIG5 is a schematic plan view of a first light shielding layer according to an embodiment of the present disclosure.
  • FIG6 is a schematic plan view showing a partial structure of a display module according to an embodiment of the present disclosure.
  • FIG7 shows a schematic cross-sectional view taken along line BB′ of FIG6 ;
  • FIG8 is a cross-sectional schematic diagram showing a partial structure of a display module according to an embodiment of the present disclosure
  • FIG9 is a schematic plan view of the first light shielding layer of FIG8 ;
  • FIG10 is a cross-sectional schematic diagram showing a partial structure of a display module according to an embodiment of the present disclosure.
  • FIG. 11 shows a block diagram of a display device according to an embodiment of the present disclosure.
  • Micro OLED display devices have the advantages of small size and high resolution, and can be prepared using mature integrated circuit processes (such as complementary metal oxide semiconductor processes) to achieve active addressing of pixels.
  • micro OLED display devices can be integrated with a variety of circuits such as a time controller (Time Control Register, T-CON) and an over-current protection circuit (Over Current Protection, OCP) to achieve lightweight.
  • Micro OLED display devices can be widely used in near-eye display, VR, AR and other fields, especially AR/VR head-mounted display devices. When micro OLED display devices are used in near-eye display devices, the fixed position of the display panel is very important for users because it affects the user's experience.
  • a cover plate on the top side of the display panel which allows light to be emitted from the display panel and has a certain protective effect on the display panel.
  • pollutants such as dust on the surface of the cover plate, and these dusts will enter the interior of the display device through the gaps in the cover plate, so that the display device will have unwanted "black spots" when displaying the picture.
  • some unwanted light in the display panel may be emitted through the edge gaps of the cover plate, thereby affecting the display effect of the display panel.
  • the present application proposes an improved display module and display device, which can solve the problem of stains on the cover plate surface and prevent unwanted light from being emitted from the edge of the cover plate.
  • FIG1 shows a schematic plan view of a display module 100, and part of the structure of FIG2 is obtained by sectioning along the AA′ line of FIG1 , that is, except for the lens 108 , the other structures shown in FIG2 can be obtained by sectioning along the AA′ line of FIG1 .
  • the display module 100 includes: an array substrate 101, which includes a substrate 1011; a first cover plate 102, which is located on the light-emitting side of the array substrate 101; a second cover plate 103, which is located on the side of the first cover plate 102 away from the array substrate 101; and a first light shielding layer 104, which is located on the side of the first cover plate 102 close to the array substrate 101, the orthographic projection of the first light shielding layer 104 on the substrate 1011 falls within the orthographic projection of the first cover plate 102 on the substrate 1011, and the first light shielding layer 104 is arranged around the edge of the first cover plate 102.
  • the “edge of the first cover plate 102 ” may be understood as the side of the first cover plate 102 .
  • the “edge of the first cover plate 102 ” refers to the four side of the first cover plate 102 .
  • the display module 100 can adopt a double cover plate structure to protect the array substrate 101, so that the electrostatic tolerance of the display module 100 is further enhanced, thereby avoiding the problem of electrostatic damage.
  • the first light shielding layer 104 at the edge of the first cover plate 102, the light emitted by the array substrate 101 can be reduced or even prevented from being emitted from the edges of the first cover plate 102 and the second cover plate 103, so that the edge light leakage phenomenon of the display module 100 can be avoided, the display effect of the display module 100 is improved, and the user experience is improved.
  • the first light shielding layer 104 is annular in shape and is arranged around the edges of the first cover plate 102.
  • the array substrate 101 includes a substrate 1011 and a laminated structure 1012.
  • the laminated structure 1012 includes, for example, an anode, a cathode, an organic light emitting layer, an encapsulation layer, and other structures, which will be described in detail later and will not be described in detail here.
  • the array substrate 101 includes a display area (i.e., an AA area), and the orthographic projection of the display area on the substrate 1011 does not overlap with the orthographic projection of the first light shielding layer 104 on the substrate 1011.
  • the annular shape of the first light shielding layer 104 is adapted to the shape of the first cover plate 102.
  • the first light shielding layer 104 is a rectangular ring; when the shape of the first cover plate 102 is square, the first light shielding layer 104 is a square ring.
  • the first light shielding layer 104 is located at the periphery of the display area, so the orthographic projection of the display area on the substrate 1011 does not overlap with the orthographic projection of the first light shielding layer 104 on the substrate 1011, thereby not affecting the normal emission of the light emitted from the display area of the array substrate 101.
  • the first light shielding layer 104 By arranging the first light shielding layer 104 to surround the edges of the first cover plate 102, it is possible to better prevent the light emitted by the array substrate 101 from emitting from the edges of the first cover plate 102 and the second cover plate 103, thereby further avoiding the edge light leakage phenomenon of the display module 100, and further improving the display effect of the display module 100 and the user experience.
  • the array substrate 101 may further include a second light shielding layer 105, the second light shielding layer 105 is at least arranged around the boundary of the display area, and the orthographic projection of the second light shielding layer 105 on the substrate 1011 falls within the orthographic projection of the display area on the substrate 1011.
  • the second light shielding layer 105 can absorb the reflected light of the peripheral metal wires of the array substrate 101.
  • the thickness T1 of the first light shielding layer 104 can be greater than the thickness T2 of the second light shielding layer 105. In this way, it is possible to avoid the gap between the array substrate 101 and the first cover plate 102 being too large, so that the first cover plate 102 can be more firmly and more closely attached to the array substrate 101.
  • the first light shielding layer 104 and the second light shielding layer 105 can be selected from one of the following: ink, black conductive glue, black resin, and a stacked structure of at least two color filter layers with different colors.
  • the first light shielding layer 104 and the second light shielding layer 105 are composed of a stacked structure of color filter layers with different colors
  • the first light shielding layer 104 and the second light shielding layer 105 include stacked color filter layers with at least two colors.
  • the first light shielding layer 104 and the second light shielding layer 105 include a red color filter layer and a green color filter layer that are stacked.
  • the first light shielding layer 104 and the second light shielding layer 105 include a red color filter layer, a green color filter layer, and a blue color filter layer that are stacked.
  • the color filter layers in the first light shielding layer 104 and the second light shielding layer 105 can be prepared by the same process as the color filter layers of the same color in the display area, thereby saving process flow and improving production efficiency.
  • the display module 100 may further include an adhesive 106 and a fixing device 107.
  • the second cover plate 103 includes a first surface 1031 facing the first cover plate 102, a second surface 1032 opposite to the first surface 1031, and a side surface connecting the first surface 1031 and the second surface 1032 (only the side surfaces 1033 and 1034 are shown in FIG. 2 ), the adhesive 106 is arranged on the side surface of the second cover plate 103, and the second cover plate 103 is adhered to the fixing device 107 via the adhesive 106.
  • the adhesive 106 may be black glue, in which case the adhesive 106 may also additionally prevent the light of the display module 100 from emitting from the edge of the first cover plate 102, thereby further avoiding edge light leakage.
  • the fixing device 107 may be implemented as an optical-mechanical structure, which clamps and fixes the display module 100.
  • the adhesive 106 may be arranged around all side surfaces of the second cover plate 103. In an alternative embodiment, the adhesive 106 may cover the fourth surface 1022 of the first cover plate 102 and all side surfaces of the second cover plate 103. Metal Ag ions may be added to the adhesive 106 to improve the heat dissipation effect.
  • the orthographic projection of the adhesive 106 on the substrate 1011 falls within the orthographic projection of the first light shielding layer 104 on the substrate 1011.
  • the adhesive 106 especially the transparent adhesive, has a certain convergence and refraction effect on light.
  • the deflected light will eventually be emitted from the second cover plate 103 uncontrollably, affecting the display effect of the display module 100.
  • the orthographic projection of the adhesive 106 on the substrate 1011 fall within the orthographic projection of the first light shielding layer 104 on the substrate 1011, in other words, making the first light shielding layer 104 shield the adhesive 106, in this way, even if the external ambient light irradiates the adhesive 106, the light will be shielded and absorbed by the first light shielding layer 104, so as not to affect the display effect of the display module 100.
  • the orthographic projection of the adhesive 106 on the substrate 1011 can also fall within the orthographic projection of the fixing device 107 on the substrate 1011.
  • the fixing device 107 includes a protruding structure, and the orthographic projection of the adhesive 106 on the substrate 1011 falls within the orthographic projection of the protruding structure on the substrate 1011.
  • the thickness T4 of the second cover plate 103 is less than the thickness T3 of the first cover plate 102.
  • the thickness T4 of the second cover plate 103 can be 0.5-0.7 mm, and the thickness T3 of the first cover plate 102 can be 0.7-1.3 mm.
  • the transmittance of the second cover plate 103 is greater than 95%.
  • the spacing S1 between the first cover plate 102 and the second cover plate 103 is smaller than the spacing S2 between the first cover plate 102 and the array substrate 101.
  • the spacing S1 between the first cover plate 102 and the second cover plate 103 is 3 to 5 um
  • the spacing S2 between the first cover plate 102 and the array substrate 101 is 10 to 20 um.
  • the orthographic projection of the second cover plate 103 on the substrate 1011 falls within the orthographic projection of the first cover plate 102 on the substrate 1011. In one example, the orthographic projection of the first cover plate 102 on the substrate 1011 completely overlaps with the substrate 1011. In an alternative example, the orthographic projection of the first cover plate 102 on the substrate 1011 falls within the first substrate 1011, for example, each side of the first cover plate 102 is about 150 um shorter than the corresponding side of the first substrate 1011.
  • the first cover plate 102 is adhered to the array substrate 101 by an adhesive (for example, OCA (Optically Clear Adhesive) or OCR (Optical Clear Resign)), and the second cover plate 103 is adhered to the first cover plate 102 by an adhesive 106.
  • an adhesive for example, OCA (Optically Clear Adhesive) or OCR (Optical Clear Resign)
  • the orthographic projection of the display area on the substrate 1011 falls within the orthographic projection of the first cover plate 102 and the second cover plate 103 on the substrate 1011.
  • the spacing F1 between the orthographic projection of the edge of the first cover plate 102 on the substrate 1011 and the orthographic projection of the corresponding boundary of the display area on the substrate 1011 is 800 to 1200 um
  • the spacing F2 between the orthographic projection of the edge of the second cover plate 103 on the substrate 1011 and the orthographic projection of the corresponding boundary of the display area on the substrate 1011 is 100 to 200 um.
  • the size of the first cover plate 102 and the second cover plate 103 is larger than the size of the display area, so as not to affect the outgoing light of the display area, and can also be well matched with the lens 108.
  • the second cover plate 103 has the same size as the first cover plate 102, the lens 108 is in direct contact with the second surface 1032 of the second cover plate 103, and the orthographic projections of the first end 1081 and the second end 1082 of the lens 108 on the substrate 1011 respectively fall outside the orthographic projection of the second cover plate 103 on the substrate 1011.
  • the second cover plate 103 includes a first surface 1031 facing the first cover plate 102, a second surface 1032 opposite to the first surface 1031, and a side surface connecting the first surface 1031 and the second surface 1032 (only the side surfaces 1033 and 1034 are shown in FIG. 2).
  • the first cover plate 102 includes a third surface 1021 facing the array substrate 101, a fourth surface 1022 opposite to the third surface 1021, and a side surface connecting the third surface 1021 and the fourth surface 1022 (only the side surfaces 1023 and 1024 are shown in FIG. 2).
  • the roughness of the side surface of the second cover plate 103 is greater than the roughness of the side surface of the first cover plate 102.
  • the side surface of the second cover plate 103 By making the side surface of the second cover plate 103 have a large roughness, on the one hand, it can be ensured that the first cover plate 102 and the second cover plate 103 can be closely attached; on the other hand, the light emitted by the array substrate 101 is incident on the first surface 1031 of the second cover plate 103, and then passes through the first surface 1031 and is incident on the above-mentioned side surface with a large roughness.
  • the light incident on the side surface will change the direction of travel under the action of the side surface, and finally be emitted from the second surface 1032 of the second cover plate 103, thereby effectively preventing the light emitted by the array substrate 101 from being emitted from the side surface of the second cover plate 103, avoiding light leakage on the side of the display module 100, and thus improving the user experience.
  • the aforementioned "under the action of the side surface” may include one or more refractions and/or reflections of light at the side surface of the second cover plate 103.
  • the roughness of the third surface 1021 of the first cover plate 102 is greater than the roughness of the fourth surface 1022 of the first cover plate 102.
  • the display module 100 may further include a lens 108 located on a side of the second cover plate 103 away from the first cover plate 102.
  • the lens 108 includes a first end 1081 and a second end 1082 opposite to the first end 1081 in a direction perpendicular to the principal optical axis 00′ of the lens.
  • the orthographic projection of the first end 1081 on the substrate 1011 falls outside the orthographic projection of the second cover plate 103 on the substrate 1011, but falls within the orthographic projection of the first cover plate 102 on the substrate 1011.
  • the orthographic projection of the second end 1082 on the substrate 1011 falls outside the orthographic projection of the second cover plate 103 on the substrate 1011, but falls within the orthographic projection of the first cover plate 102 on the substrate 1011.
  • the spacing between the orthographic projection of the first end 1081 of the lens 108 on the substrate 1011 and the orthographic projection of the edge of the second cover plate 103 corresponding to the first end 1081 on the substrate 1011 is 50 to 100 um
  • the spacing between the orthographic projection of the second end 1082 of the lens 108 on the substrate 1011 and the orthographic projection of the edge of the second cover plate 103 corresponding to the second end 1082 on the substrate 1011 is 50 to 100 um
  • the spacing between the orthographic projection of the first end 1081 of the lens 108 on the substrate 1011 and the orthographic projection of the edge of the first cover plate 102 corresponding to the first end 1081 on the substrate 1011 is 50 to 100 um
  • FIG3 shows a simplified schematic diagram of a display module 100.
  • the display module 100 may be a silicon-based OLED display module, and may adopt a flexible FPC circuit board type module structure.
  • an anti-reflection film may be additionally provided on the surface of the second cover plate 103, so that the second cover plate 103 can not only play a dustproof role, avoiding dust from falling on the surface of the first cover plate 102, but also realize the color selection of the emitted light, improve the color of the edge emitted light, and improve the product's large viewing angle red or blue problem, thereby optimizing the image focus and display effect of the second cover plate 103 imaging.
  • the array substrate 101 includes a substrate 1011 and a stacking structure 1012, and the stacking structure 1012 includes at least an OLED device to realize light emission, and the light emitted by the OLED device can be emitted through the first cover plate 102 and the second cover plate 103.
  • a driving circuit is integrated in the array substrate 101 to realize the voltage input drive of the light-emitting pixel.
  • the flexible circuit board 109 is connected to the array substrate 101 to transmit an external signal to the array substrate 101.
  • FIG4 shows a schematic cross-sectional view of a partial structure of the display module 100.
  • the array substrate 101 in addition to the display area (i.e., the AA area), the array substrate 101 also includes a peripheral area (i.e., the EA area) and a binding area (i.e., the BA area), and the peripheral area is arranged around the display area.
  • the display area shows three sub-pixels SP1, SP2, and SP3, and the three sub-pixels can emit red light, green light, and blue light, respectively.
  • the color filter layer 116 includes a red filter layer R, a green filter layer G, and a blue filter layer B.
  • the first light shielding layer 104 and the second light shielding layer 105 can be composed of a stacked structure of a red filter layer R and a green filter layer G.
  • the red filter layer R of the first light shielding layer 104 and the second light shielding layer 105 can be formed in the same process as the red filter layer R of the color filter layer 116
  • the green filter layer G of the first light shielding layer 104 and the second light shielding layer 105 can be formed in the same process as the green filter layer G of the color filter layer 116.
  • the binding area is arranged with a binding electrode 112.
  • the orthographic projection of the first cover plate 102 on the substrate 1011 does not overlap with the orthographic projection of the binding electrode 112 on the substrate 1011, and the orthographic projection of the second cover plate 103 on the substrate 1011 at least partially overlaps with the orthographic projection of the binding electrode 112 on the substrate 1011.
  • the first cover plate 102 not cover the binding area
  • the first cover plate 102 and the binding electrode 112 can be made not to overlap, thereby providing a wide space for the binding of the binding electrode 112 and the FPC 109, which is beneficial to the binding operation.
  • the second cover plate 103 extend to the binding area and overlap with the binding electrode 112, the second cover plate 103 provides a larger clamping position, which is beneficial to the clamping of the second cover plate 103 by the fixing device 107.
  • the array substrate 101 of the display module 100 may further include a driving transistor T1, which includes a gate G, a source S, a drain G and other structures.
  • the source S is electrically connected to the first electrode 110 of the OLED light-emitting device through a conductive layer to drive the OLED light-emitting device to emit light.
  • Fig. 5 shows a schematic plan view of the first light shielding layer 104.
  • the first light shielding layer 104 includes a first section 1041, a second section 1042, a third section 1043 and a fourth section 1044 connected end to end in sequence, and the distance between the orthographic projection of the first section 1041 on the substrate 1011 and the orthographic projection of the binding electrode 112 on the substrate 1011 is smaller than the distance between the orthographic projection of the second section 1042, the third section 1043 and the fourth section 1044 on the substrate 1011 and the orthographic projection of the binding electrode 112 on the substrate 1011.
  • the width W1 of the first section 1041 along the first direction D1 is smaller than the width W3 of the third section 1043 along the first direction D1, and the width W1 of the first section 1041 along the first direction D1 is smaller than the widths W2 and W4 of the second section 1042 and the fourth section 1044 along the second direction D2, and the first direction D1 intersects with the second direction D2, for example, the first direction D1 is perpendicular to the second direction D2.
  • the first section 1041 is closer to the binding electrode 112 than the other three sections, and the first section 1041 is the section with the smallest width among the four sections.
  • the width of each section of the first light shielding layer 104 is 100 to 450 um, but it is necessary to ensure that the width W1 of the first section 1041 is smaller than the widths of the other three sections.
  • Such a width design can not only play a light shielding role, but also has the function of blocking dust, preventing external dust from entering the interior of the display module 100.
  • FIG6 shows a schematic plan view of a partial structure of the display module 100
  • FIG7 shows a schematic cross-sectional view taken along the BB′ line of FIG6, and
  • FIG6 and FIG7 show a more detailed film structure of the display module 100.
  • the array substrate 101 of the display module 100 includes a display area (AA area), a peripheral area (EA area) surrounding the display area, and a binding area (BA area).
  • the stacked structure 1012 of the array substrate 101 may include a first electrode 110, a light-emitting layer 111, a second electrode 113, a first encapsulation layer 114, a color filter layer 116, and a second encapsulation layer 115 and other structures stacked sequentially on a substrate 1011.
  • the substrate 1011 may be a silicon substrate.
  • the first electrode 110 may be an anode, and the second electrode 113 may be a cathode.
  • the material of the anode includes, but is not limited to, ITO, which has a high transmittance and a high work function.
  • the cathode may be a transparent structure, and the cathode may be made of Mg, Ag, or an alloy material including Mg and/or Ag.
  • the light-emitting layer 111 is usually made of organic materials.
  • the array substrate 101 may also include a pixel driving circuit (not shown) formed on the substrate 1011, and the pixel driving circuit may be manufactured by a 110nm semiconductor process.
  • a color filter layer 116 is provided between the second encapsulation layer 115 and the first encapsulation layer 114, and the color filter layer 116 is provided corresponding to the light-emitting layer 111 to achieve a colored display of the emitted light.
  • the second encapsulation layer 115 is used in combination with the first encapsulation layer 114 to achieve effective encapsulation of the device, to achieve effective blocking of water vapor and oxygen, and to achieve the purpose of protecting the device and extending the life.
  • the second encapsulation layer 115 and the first encapsulation layer 114 may be made of one or more organic materials and inorganic materials with good sealing properties, such as silicon oxide, silicon nitride, etc.
  • the second encapsulation layer 115, the first cover plate 102 and the second cover plate 103 are sequentially arranged above the color filter layer 116, which can provide good protection for the color filter layer 116.
  • the first cover plate 102 and the second cover plate 103 can be made of transparent materials, such as plain glass with high transmittance.
  • FIG8 shows a cross-sectional schematic diagram of a partial structure of the display module 200. Except for the first light shielding layer 204, the display module 200 shown in FIG8 has substantially the same structure as the display module 100, and therefore the same reference numerals are used to refer to the same components. Therefore, the detailed roles and functions of the components with the same reference numerals as the display module 100 in FIG8 can refer to the description of the display module 100, and will not be repeated here. For the sake of brevity, only the differences are described below.
  • the display module 200 includes only the first light shielding layer 204, but does not include the second light shielding layer 105 as described above.
  • FIG9 shows a schematic plan view of the first light shielding layer 204. As shown in FIG8 and FIG9 , the first light shielding layer 204 is arranged around the edges of the first cover plate 102, and the orthographic projection of the display area on the substrate 1011 partially overlaps with the orthographic projection of the first light shielding layer 204 on the substrate 1011.
  • the first light shielding layer 204 extends from the edge of the first cover plate 102 to the display area, so that the second light shielding layer 105 as described above can be omitted, but can play the role of both the first light shielding layer 104 and the second light shielding layer 105.
  • the first light shielding layer 204 includes a first portion 2041 and a second portion 2042, the orthographic projection of the first portion 2041 on the substrate 1011 falls within the orthographic projection of the display area on the substrate 1011, the orthographic projection of the second portion 2042 on the substrate 1011 does not overlap with the orthographic projection of the display area on the substrate 1011, and the thickness T5 of the first portion 2041 is less than the thickness T6 of the second portion 2042.
  • the thickness T5 of the overlapping area of the first light shielding layer 204 and the display area is less than the thickness T6 of the non-overlapping area, it is possible to avoid an excessive gap between the array substrate 101 and the first cover plate 102, which helps the first cover plate 102 to be closely attached to the array substrate 101.
  • FIG10 shows a cross-sectional schematic diagram of a partial structure of the display module 300.
  • the display module 300 shown in FIG10 has substantially the same structure as the display module 100, except that the first cover plate 102 and the second cover plate 103 are combined with the fixing device 107 in a different manner, and therefore the same reference numerals are used to refer to the same components. Therefore, the detailed roles and functions of the components in FIG10 with the same reference numerals as the display module 100 can refer to the description of the display module 100, and will not be repeated here. For the sake of brevity, only the differences are described below.
  • no adhesive 106 is provided on the side surface of the second cover plate 103.
  • the side surfaces of the first cover plate 102 and the second cover plate 103 are in direct contact with the fixing device 107, thereby being fixed to the fixing device 107.
  • the edge of the second cover plate 103 is in direct contact with the protruding structure of the fixing device 107, and the side edge of the fixing device 107 can press the edge of the first cover plate 102 and the second cover plate 103, thereby achieving a fixing effect.
  • the opening size of the fixing device 107 of FIG10 can be larger than the opening size of the fixing device 107 of FIG1 .
  • FIG11 shows a block diagram of a display device 400, which includes a display module described in any of the previous embodiments.
  • the display device 400 can be any appropriate device with a display function, including but not limited to a head-mounted display device.
  • the display device 400 can be applied to fields such as near-eye display, virtual reality, and augmented reality to provide users with an excellent visual experience.
  • the display device 400 can have substantially the same technical effects as the display module described in the previous embodiment, and therefore, for the purpose of brevity, a repeated description will not be given here.
  • first, second, third, etc. may be used to describe various elements, components, regions, layers and/or parts in this article, these elements, components, regions, layers and/or parts should not be limited by these terms. These terms are only used to distinguish an element, component, region, layer or part from another region, layer or part. Therefore, the first element, component, region, layer or part discussed above may be referred to as a second element, component, region, layer or part without departing from the teaching of the present disclosure.
  • the device can be oriented in other ways (rotated 90 degrees or in other orientations) and the spatially relative descriptors used in this article are interpreted accordingly.
  • a layer is referred to as "between two layers", it can be the only layer between the two layers, or one or more intermediate layers can also be present.
  • Embodiments of the present disclosure are described herein with reference to schematic illustrations (and intermediate structures) of idealized embodiments of the present disclosure. As such, variations in the illustrated shapes, for example as a result of manufacturing techniques and/or tolerances, should be expected. Therefore, embodiments of the present disclosure should not be interpreted as being limited to the specific shapes of the zones illustrated herein, but should include shape deviations, for example, due to manufacturing. Therefore, the zones illustrated in the figures are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the zones of the device and are not intended to limit the scope of the present disclosure.

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Abstract

本公开提供了一种显示模组和显示装置。该显示模组包括：阵列基板，包括衬底；第一盖板，位于所述阵列基板的出光侧；第二盖板，位于所述第一盖板远离所述阵列基板的一侧；以及第一遮光层，位于所述第一盖板靠近所述阵列基板的一侧。所述第一遮光层在所述衬底上的正投影落在所述第一盖板在所述衬底上的正投影之内，并且所述第一遮光层围绕所述第一盖板的边缘设置。

Description

显示模组、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以及包括该显示模组的显示装置。
背景技术
微型有机发光二极管(Micro-OLED)显示装置是一种以硅基板为衬底的新型OLED显示装置。硅基OLED具有诸如体积小、分辨率高等优点，并且可以通过成熟的集成电路工艺来制成，实现像素的有源寻址。微型硅基OLED显示装置可以应用于近眼显示、虚拟现实(Virtual Reality，VR)、增强现实(Augmented Reality，AR)等领域中。
发明内容
根据本公开的一方面，提供了一种显示模组，包括：阵列基板，包括衬底；第一盖板，位于所述阵列基板的出光侧；第二盖板，位于所述第一盖板远离所述阵列基板的一侧；以及第一遮光层，位于所述第一盖板靠近所述阵列基板的一侧。所述第一遮光层在所述衬底上的正投影落在所述第一盖板在所述衬底上的正投影之内，并且所述第一遮光层围绕所述第一盖板的边缘设置。
在一些实施例中，所述第一遮光层的形状为环形且围绕所述第一盖板的四周边缘设置，所述阵列基板包括显示区，所述显示区在所述衬底上的正投影与所述第一遮光层在所述衬底上的正投影不交叠。
在一些实施例中，所述阵列基板还包括第二遮光层，所述第二遮光层至少围绕所述显示区的边界设置，并且所述第二遮光层在所述衬底上的正投影落在所述显示区在所述衬底上的正投影之内。
在一些实施例中，所述第一遮光层的厚度大于所述第二遮光层的厚度。
在一些实施例中，所述第一遮光层和所述第二遮光层选自下列中的一种：油墨、黑色导电胶、黑色树脂、具有不同颜色的至少两个彩膜层的堆叠结构。
在一些实施例中，所述第一遮光层围绕所述第一盖板的四周边缘 设置，所述阵列基板包括显示区，所述显示区在所述衬底上的正投影与所述第一遮光层在所述衬底上的正投影部分地交叠。
在一些实施例中，所述第一遮光层包括第一部分和第二部分，所述第一部分在所述衬底上的正投影落在所述显示区在所述衬底上的正投影之内，所述第二部分在所述衬底上的正投影与所述显示区在所述衬底上的正投影不交叠，所述第一部分的厚度小于所述第二部分的厚度。
在一些实施例中，所述第二盖板包括面向所述第一盖板的第一表面、与所述第一表面相对的第二表面、以及连接所述第一表面和所述第二表面的侧表面，所述粘合剂布置在所述第二盖板的侧表面上，所述第二盖板经由所述粘合剂粘附到所述固定装置，并且所述第一盖板远离所述阵列基板的表面的一部分与所述粘合剂接触，所述第一盖板经由所述粘合剂粘附到所述第二盖板。
在一些实施例中，所述粘合剂在所述衬底上的正投影落在所述第一遮光层在所述衬底上的正投影之内。
在一些实施例中，所述粘合剂在所述衬底上的正投影落在所述固定装置在所述衬底上的正投影之内。
在一些实施例中，所述显示模组还包括固定装置，所述第一盖板和所述第二盖板的边缘均与所述固定装置直接接触。
在一些实施例中，所述第二盖板的厚度小于所述第一盖板的厚度。
在一些实施例中，所述第一盖板与所述第二盖板之间的间距小于所述第一盖板与所述阵列基板之间的间距。
在一些实施例中，所述第二盖板包括面向所述第一盖板的第一表面、与所述第一表面相对的第二表面、以及连接所述第一表面和所述第二表面的侧表面；所述第一盖板包括面向所述阵列基板的第三表面、与所述第三表面相对的第四表面、以及连接所述第三表面和所述第四表面的侧表面；所述第二盖板的侧表面的粗糙度大于所述第一盖板的侧表面的粗糙度。
在一些实施例中，所述第一盖板的第三表面的粗糙度大于所述第一盖板的第四表面的粗糙度。
在一些实施例中，所述阵列基板还包括绑定区，所述绑定区布置有绑定电极。所述第一盖板在所述衬底上的正投影与所述绑定电极在 所述衬底上的正投影不交叠，并且所述第二盖板在所述衬底上的正投影与所述绑定电极在所述衬底上的正投影至少部分地交叠。
在一些实施例中，所述第一遮光层包括首尾依次连接的第一区段、第二区段、第三区段以及第四区段，所述第一区段在所述衬底上的正投影与所述绑定电极在所述衬底上的正投影之间的间距小于所述第二区段、第三区段以及第四区段在所述衬底上的正投影分别与所述绑定电极在所述衬底上的正投影之间的间距。所述第一区段沿第一方向的宽度小于所述第三区段沿所述第一方向的宽度，并且所述第一区段沿所述第一方向的宽度小于所述第二区段和所述第四区段沿第二方向的宽度，所述第一方向与所述第二方向相交。
在一些实施例中，所述显示模组还包括位于所述第二盖板远离所述第一盖板一侧的透镜。所述透镜在垂直于所述透镜的主光轴的方向上包括第一端部和与所述第一端部相对的第二端部。所述第一端部在所述衬底上的正投影落在所述第二盖板在所述衬底上的正投影之外但落在所述第一盖板在所述衬底上的正投影之内，并且所述第二端部在所述衬底上的正投影落在所述第二盖板在所述衬底上的正投影之外但落在所述第一盖板在所述衬底上的正投影之内。
在一些实施例中，所述第二盖板在所述衬底上的正投影落在所述第一盖板在所述衬底上的正投影之内。
根据本公开的另一方面，提供了一种显示装置，其包括在前面任一实施例中描述的显示模组。
附图说明
为了更清楚地描述本公开实施例中的技术方案，下面将对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，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了根据本公开实施例的显示模组的部分结构的平面示意图；
图2示出了沿着图1的AA′线截取的剖面示意图；
图3示出了根据本公开实施例的显示模组的结构示意图；
图4示出了根据本公开实施例的显示模组的部分结构的剖面示意 图；
图5示出了根据本公开实施例的第一遮光层的平面示意图；
图6示出了根据本公开实施例的显示模组的部分结构的平面示意图；
图7示出了沿着图6的BB′线截取的剖面示意图；
图8示出了根据本公开实施例的显示模组的部分结构的剖面示意图；
图9示出了图8的第一遮光层的平面示意图；
图10示出了根据本公开实施例的显示模组的部分结构的剖面示意图；以及
图11示出了根据本公开实施例的显示装置的框图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开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。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
微型OLED显示装置具有体积小、分辨率高等优点，可以采用成熟的集成电路工艺(例如互补金属氧化物半导体工艺)工艺来制备，从而实现像素的有源寻址。此外，微型OLED显示装置可以集成有时序控制器(Time Control Register，T-CON)、过电流保护电路(Over Current Protection，OCP)等多种电路，从而实现轻量化。微型OLED显示装置可以广泛应用于近眼显示、VR、AR等领域中，特别是AR/VR头戴显示装置中。当微型OLED显示装置应用于近眼显示设备中时，显示面板的固定位置对于用户来说是十分重要的，因为这会影响用户的使用感受。通常情况下，通过显示面板的顶侧的盖板来实现定位，该盖板允许光线从显示面板射出，并且对显示面板具有一定的保护作用。但是，在显示装置的制作过程中非常容易在盖板的表面引入灰尘等污染物，这些灰尘会通过盖板的缝隙进入到显示装置内部，使得显示装置在显示画面时会出现不想要的“黑点”。另外，显示面板中一些不期望的光线会透过盖板的边缘缝隙射出，从而影响显示面板的显示 效果。
鉴于此，本申请提出了一种改进的显示模组和显示装置，该显示模组和显示装置可以解决盖板表面污渍问题，并且可以避免不期望的光线从盖板边缘射出。
图1示出了显示模组100的平面示意图，图2的部分结构通过图1的AA′线截取得到，即，除透镜108之外，图2示出的其他结构可通过图1的AA′线截取得到。如图1和图2所示，该显示模组100包括：阵列基板101，其包括衬底1011；第一盖板102，位于阵列基板101的出光侧；第二盖板103，位于第一盖板102远离阵列基板101的一侧；以及第一遮光层104，位于第一盖板102靠近阵列基板101的一侧，第一遮光层104在衬底1011上的正投影落在第一盖板102在衬底1011上的正投影之内，并且第一遮光层104围绕第一盖板102的边缘设置。
“第一盖板102的边缘”可以理解为第一盖板102的侧边。例如，当第一盖板102的形状为矩形时，“第一盖板102的边缘”是指第一盖板102的四个侧边。
通过在显示模组100中设置第二盖板103，这样，即使环境中存在灰尘，这些灰尘至多仅掉落在第二盖板103的表面上，而不会掉落在第一盖板102的表面上，从而可以防止灰尘透过第一盖板102与阵列基板101之间的缝隙进入到显示模组100的内部，显示模组100在显示画面时不会出现“黑点”，从而不会影响显示模组100的显示效果。另外，通过增加第二盖板103，显示模组100可以采用双盖板结构来保护阵列基板101，使得显示模组100的静电耐受性进一步增强，从而可以规避静电损伤问题。此外，通过在第一盖板102的边缘设置第一遮光层104，可以减轻甚至避免阵列基板101发出的光线从第一盖板102和第二盖板103的边缘射出，从而可以避免显示模组100出现边缘漏光现象，提升显示模组100的显示效果，进而提高用户的使用体验。
在一些实施例中，如图1所示，第一遮光层104的形状为环形且围绕第一盖板102的四周边缘设置。阵列基板101包括衬底1011和叠层结构1012，叠层结构1012例如包括阳极、阴极、有机发光层、封装层等结构，这将在后文展开描述，此处不进行过多描述。阵列基板101包括显示区(即AA区)，该显示区在衬底1011上的正投影与第一遮光层104在衬底1011上的正投影不交叠。需要指出的是，第一遮光层104 的环形形状适配第一盖板102的形状，例如，当第一盖板102的形状是矩形时，则第一遮光层104为矩形环；当第一盖板102的形状为正方形时，则第一遮光层104为正方形环。第一遮光层104位于显示区的外围，因此显示区在衬底1011上的正投影与第一遮光层104在衬底1011上的正投影不交叠，从而不会影响阵列基板101的显示区的发射光的正常出射。通过使第一遮光层104布置成围绕第一盖板102的四周边缘，可以更好地防止阵列基板101发出的光线从第一盖板102和第二盖板103的边缘射出，从而可以进一步避免显示模组100出现边缘漏光现象，进一步提升显示模组100的显示效果和用户的使用体验。
在一些实施例中，阵列基板101还可以包括第二遮光层105，第二遮光层105至少围绕显示区的边界设置，并且第二遮光层105在衬底1011上的正投影落在显示区在衬底1011上的正投影之内。第二遮光层105可以吸收阵列基板101的周边金属线的反射光。第一遮光层104的厚度T1可以大于第二遮光层105的厚度T2。通过这样的方式，可以避免阵列基板101与第一盖板102之间的间隙过大，从而使得第一盖板102可以更牢固且更紧密地贴合到阵列基板101上。
第一遮光层104和第二遮光层105可以选自下列中的一种：油墨、黑色导电胶、黑色树脂、具有不同颜色的至少两个彩膜层的堆叠结构。当第一遮光层104和第二遮光层105由具有不同颜色的彩膜层的堆叠结构构成时，第一遮光层104和第二遮光层105包括具有至少两种颜色的堆叠的彩膜层。在一个示例中，第一遮光层104和第二遮光层105包括层叠设置的红色彩膜层和绿色彩膜层。在替代的示例中，第一遮光层104和第二遮光层105包括层叠设置的红色彩膜层、绿色彩膜层、蓝色彩膜层。第一遮光层104和第二遮光层105中的彩膜层可以与显示区中相同颜色的彩膜层通过同一工艺来制备，从而可以节省工艺流程，提高生产效率。
参考图1和图2，在一些实施例中，显示模组100还可以包括粘合剂106和固定装置107。第二盖板103包括面向第一盖板102的第一表面1031、与第一表面1031相对的第二表面1032、以及连接第一表面1031和第二表面1032的侧表面(图2中仅示出了侧表面1033和1034)，粘合剂106布置在第二盖板103的侧表面上，第二盖板103经由粘合剂106粘附到固定装置107。第一盖板102远离阵列基板101的第四表 面1022的一部分与粘合剂106接触，并且第一盖板102经由该粘合剂106粘附到第二盖板102。通过粘合剂106，可以将第一盖板102和第二盖板103均固定到固定装置107，从而起到机械固定作用。在一些实施例中，粘合剂106可以是黑色胶，在这种情况下，粘合剂106还可以附加地起到防止显示模组100的光线从第一盖板102的边缘射出，从而进一步避免出现边缘漏光现象。固定装置107可以实现为光机结构件，其对显示模组100起到夹持和固定作用。
在一个实施例中，粘合剂106可以围绕第二盖板103的所有侧表面设置。在替代的实施例中，粘合剂106可以覆盖第一盖板102的第四表面1022以及第二盖板103的所有侧表面。粘合剂106中可以加入金属Ag离子，从而提高散热效果。粘合剂106在衬底1011上的正投影落在第一遮光层104在衬底1011上的正投影之内。粘合剂106、尤其是透明粘合剂，对光具有一定的汇聚、折射作用，如果外界环境光照射到粘合剂106并被粘合剂106偏转后，这些偏转后的光线最终会不受控地从第二盖板103射出，影响显示模组100的显示效果。在本公开的实施例中，通过使粘合剂106在衬底1011上的正投影落在第一遮光层104在衬底1011上的正投影之内，换句话说，让第一遮光层104遮挡粘合剂106，这样，即使外界环境光照射到粘合剂106，这些光线也会被第一遮光层104遮挡和吸收，从而不会影响显示模组100的显示效果。附加地，粘合剂106在衬底1011上的正投影还可以落在固定装置107在衬底1011上的正投影之内。如图2所示，固定装置107包括凸出结构，粘合剂106在衬底1011上的正投影落在凸出结构在衬底1011上的正投影之内。通过使固定装置107遮挡粘合剂106，可以避免外界环境光照射到粘合剂106，从而不会影响显示模组100的显示效果。
第二盖板103的厚度T4小于第一盖板102的厚度T3。在一些实施例中，第二盖板103的厚度T4可以为0.5～0.7mm，第一盖板102的厚度T3可以为0.7～1.3mm。通过使第二盖板103的厚度T4小于第一盖板102的厚度T3，在起到防尘效果的同时，第二盖板103不会较大地影响显示模组100的出光透过率。第二盖板103的透过率大于95％。通过优化第一盖板102和第二盖板103的厚度，可以调节成像焦距，有利于与透镜10g的配合使用。
如图2所示，第一盖板102与第二盖板103之间的间距S1小于第一盖板102与阵列基板101之间的间距S2。在一些实施例中，第一盖板102与第二盖板103之间的间距S1为3～5um，第一盖板102与阵列基板101之间的间距S2为10～20um。通过使第一盖板102与第二盖板103之间的间距S1尽可能小，可以在最大程度上降低阵列基板101出射的光线被盖板损耗，有利于提升显示模组100的出光量。
在一些实施例中，第二盖板103在衬底1011上的正投影落在第一盖板102在衬底1011上的正投影之内。在一个示例中，第一盖板102在衬底1011上的正投影与衬底1011完全重叠。在替代的示例中，第一盖板102在衬底1011上的正投影落在第一衬底1011之内，例如，第一盖板102的每条侧边比第一衬底1011的相应侧边短约150um。第一盖板102通过粘合剂(例如OCA(Optically Clear Adhesive)或者OCR(Optical Clear Resign))与阵列基板101粘附，第二盖板103通过粘合剂106与第一盖板102粘附。
如图1所示，显示区在衬底1011上的正投影落在第一盖板102和第二盖板103在衬底1011上的正投影之内。在一个实施例中，第一盖板102的边缘在衬底1011上的正投影与显示区的相应边界在衬底1011上的正投影之间的间距F1为800～1200um，第二盖板103的边缘在衬底1011上的正投影与显示区的相应边界在衬底1011上的正投影之间的间距F2为100～200um。通过这种布置方式，可以确保第一盖板102和第二盖板103的尺寸大于显示区的尺寸，从而不会影响显示区的出射光，同时也可以与透镜108较好地匹配。在替代的实施例中，第二盖板103具有与第一盖板102相同的尺寸，透镜108与第二盖板103的第二表面1032直接接触，透镜108的第一端部1081和第二端部1082在衬底1011上的正投影分别落在第二盖板103在衬底1011上的正投影之外。
第二盖板103包括面向第一盖板102的第一表面1031、与第一表面1031相对的第二表面1032、以及连接第一表面1031和第二表面1032的侧表面(图2中仅示出了侧表面1033和1034)。第一盖板102包括面向阵列基板101的第三表面1021、与第三表面1021相对的第四表面1022、以及连接第三表面1021和第四表面1022的侧表面(图2中仅示出了侧表面1023和1024)。第二盖板103的侧表面的粗糙度大于第 一盖板102的侧表面的粗糙度。通过使第二盖板103的侧表面具有较大的粗糙度，一方面，可以保证第一盖板102和第二盖板103可以紧密贴合；另一方面，阵列基板101发出的光，入射至第二盖板103的第一表面1031，然后穿过该第一表面1031入射至上述具有较大粗糙度的侧表面。入射至该侧表面的光，会在侧表面的作用下改变行进方向，最终从第二盖板103的第二表面1032射出，从而有效避免阵列基板101发出的光从第二盖板103的侧表面射出，避免在显示模组100的侧边出现漏光现象，进而可以提升用户的使用体验。前述“在侧表面的作用下”可以包括光在第二盖板103的侧表面处发生一次或多次折射和/或反射。
在一些实施例中，第一盖板102的第三表面1021的粗糙度大于第一盖板102的第四表面1022的粗糙度。通过使第一盖板102的第三表面1021具有较大的粗糙度，不仅可以保证第一遮光层104可以牢固地结合到第一盖板102的第三表面1021上，还可以使阵列基板101射出的绝大部分光穿过第一盖板102的第三表面1021和第四表面1022而入射至第二盖板103，而不会从第一盖板102的侧表面射出，从而可以进一步避免在显示模组100的侧边出现漏光现象。
如图2所示，显示模组100还可以包括位于第二盖板103远离第一盖板102一侧的透镜108。透镜108在垂直于透镜的主光轴00′的方向上包括第一端部1081和与第一端部1081相对的第二端部1082。第一端部1081在衬底1011上的正投影落在第二盖板103在衬底1011上的正投影之外，但是落在第一盖板102在衬底1011上的正投影之内。第二端部1082在衬底1011上的正投影落在第二盖板103在衬底1011上的正投影之外，但是落在第一盖板102在衬底1011上的正投影之内。例如，透镜108的第一端部1081在衬底1011上的正投影与第二盖板103的与该第一端部1081对应的边缘在衬底1011上的正投影之间的间距为50～100um，透镜108的第二端部1082在衬底1011上的正投影与第二盖板103的与该第二端部1082对应的边缘在衬底1011上的正投影之间的间距为50～100um；透镜108的第一端部1081在衬底1011上的正投影与第一盖板102的与该第一端部1081对应的边缘在衬底1011上的正投影之间的间距为50～100um，透镜108的第二端部1082在衬底1011上的正投影与第一盖板102的与该第二端部1082对应的边缘 在衬底1011上的正投影之间的间距为50～100um。通过这种布置方式，可以使透镜108更好地汇聚阵列基板101射出的光线，从而达到最优的光学效果。
图3示出了显示模组100的简化示意图。该显示模组100可以是硅基OLED显示模组，可以采用柔性FPC电路板类型的模组结构。在一些实施例中，第二盖板103的表面可以附加地设置有增透膜，这样，第二盖板103不仅可以起到防尘作用，规避灰尘落在第一盖板102的表面上，还可以实现对于出射光的颜色选择，改善边缘出射光的颜色，改善产品的大视角发红或者发蓝问题，从而优化第二盖板103成像的画面聚焦和显示效果。阵列基板101包括衬底1011和堆叠结构1012，堆叠结构1012至少包括OLED器件，以实现发光，OLED器件发射的光可以透过第一盖板102和第二盖板103射出。阵列基板101中集成有驱动电路，实现发光像素的电压输入驱动。柔性电路板109与阵列基板101相连，以将外部信号传输到阵列基板101。
图4示出了显示模组100的部分结构的剖面示意图。如图4所示，除了显示区(即AA区)之外，阵列基板101还包括周边区(即EA区)和绑定区(即BA区)，周边区围绕显示区设置。显示区示出了三个子像素SP1、SP2、SP3，三个子像素可以分别发射红光、绿光以及蓝光。相应地，彩膜层116包括红色滤光层R、绿色滤光层G以及蓝色滤光层B。在图4的示例中，第一遮光层104和第二遮光层105可以由红色滤光层R和绿色滤光层G的堆叠结构构成。在制备过程中，第一遮光层104和第二遮光层105的红色滤光层R可以与彩膜层116的红色滤光层R在同一工艺中形成，第一遮光层104和第二遮光层105的绿色滤光层G可以与彩膜层116的绿色滤光层G在同一工艺中形成。
绑定区布置有绑定电极112。第一盖板102在衬底1011上的正投影与绑定电极112在衬底1011上的正投影不交叠，并且第二盖板103在衬底1011上的正投影与绑定电极112在衬底1011上的正投影至少部分地交叠。通过使第一盖板102不覆盖绑定区，可以使得第一盖板102与绑定电极112不交叠，从而为绑定电极112与FPC 109的绑定提供了宽敞的空间，有利于绑定操作。通过使第二盖板103延伸到绑定区而与绑定电极112交叠，第二盖板103提供了较大尺寸的夹持位置，有利于固定装置107对第二盖板103的夹持。
显示模组100的阵列基板101还可以包括驱动晶体管T1，驱动晶体管T1包括栅极G、源极S、漏极G等结构，源极S通过导电层与OLED发光器件的第一电极110电连接，以驱动OLED发光器件发光。
图5示出了第一遮光层104的平面示意图。如图5所示，第一遮光层104包括首尾依次连接的第一区段1041、第二区段1042、第三区段1043以及第四区段1044，第一区段1041在衬底1011上的正投影与绑定电极112在衬底1011上的正投影之间的间距小于第二区段1042、第三区段1043以及第四区段1044在衬底1011上的正投影分别与绑定电极112在衬底1011上的正投影之间的间距。第一区段1041沿第一方向D1的宽度W1小于第三区段1043沿第一方向D1的宽度W3，并且第一区段1041沿第一方向D1的宽度W1小于第二区段1042和第四区段1044沿第二方向D2的宽度W2和W4，第一方向D1与第二方向D2相交，例如，第一方向D1垂直于第二方向D2。换句话说，第一区段1041相较于其他三个区段更为靠近绑定电极112，并且第一区段1041是四个区段中宽度最小的区段。在一个实施例中，第一遮光层104的每个区段的宽度为100～450um，但是需要保证第一区段1041的宽度W1小于其他三个区段的宽度。这样的宽度设计，不仅可以起到遮光作用，还具有阻隔灰尘的作用，防止外界灰尘进入到显示模组100的内部。
图6示出了显示模组100的部分结构的平面示意图，图7示出了沿着图6的BB′线截取的剖面示意图，图6和图7示出了显示模组100的更为详细的膜层结构。如图6和图7所示，显示模组100的阵列基板101包括显示区(AA区)、围绕显示区的周边区(EA区)、以及绑定区(BA区)。阵列基板101的堆叠结构1012可以包括在衬底1011上依次堆叠的第一电极110、发光层111、第二电极113、第一封装层114、彩膜层116、以及第二封装层115等结构。衬底1011可以是硅衬底。第一电极110可以是阳极，第二电极113可以是阴极。阳极的材料包括但不限于ITO，其具有较高的透过率和较高的功函数。阴极可以是透明结构，阴极可以由Mg、Ag、包括Mg和/或Ag的合金材料制作而成。发光层111通常由有机材料制成，利用有机材料的发光特性，在电压或者电流的作用，从第一电极110产生的空穴和从第二电极113产生的电子在发光层111处复合，形成激子，从而实现发光。阵列基 板101还可以包括形成在衬底1011上的像素驱动电路(未示出)，像素驱动电路可以通过110nm的半导体工艺制作而成。第二封装层115与第一封装层114之间设置有彩膜层116，彩膜层116对应于发光层111设置，实现发射光的彩色化显示。第二封装层115与第一封装层114结合使用，可以实现器件的有效封装，实现水汽、氧气的有效阻挡，达到保护器件、延长寿命的目的。在一些实施例中，第二封装层115与第一封装层114可以采用密封性较好的有机材料、无机材料中的一种或多种，例如可以是氧化硅，氮化硅等。第二封装层115、第一盖板102以及第二盖板103依次设置在彩膜层116的上方，可以对彩膜层116具有较好的保护作用。第一盖板102和第二盖板103可以是透明的材料，例如可以是具有高透过率的素玻璃。
图8示出了显示模组200的部分结构的剖面示意图。除了第一遮光层204之外，图8中示出的显示模组200具有与显示模组100基本相同的构造，并且因此使用相同的附图标记来指代相同的部件。因此，图8中具有与显示模组100相同附图标记的部件的详细作用及功能可以参考对显示模组100的说明，此处不再赘述。为了简洁起见，下面仅介绍不同之处。
如图8所示，显示模组200仅包括第一遮光层204，而不包括如前所述的第二遮光层105。图9示出了第一遮光层204的平面示意图。如图8和图9所示，第一遮光层204围绕第一盖板102的四周边缘设置，并且显示区在衬底1011上的正投影与第一遮光层204在衬底1011上的正投影部分地交叠。换句话说，第一遮光层204从第一盖板102的边缘延伸至显示区，从而可以省略如前所述的第二遮光层105，但是可以起到第一遮光层104和第二遮光层105两者的作用。如图8和图9所示，第一遮光层204包括第一部分2041和第二部分2042，第一部分2041在衬底1011上的正投影落在显示区在衬底1011上的正投影之内，第二部分2042在衬底1011上的正投影与显示区在衬底1011上的正投影不交叠，并且第一部分2041的厚度T5小于第二部分2042的厚度T6。通过使第一遮光层204与显示区交叠区域的厚度T5小于非交叠区域的厚度T6，可以避免阵列基板101与第一盖板102之间的间隙过大，有助于第一盖板102紧密贴合到阵列基板101。
显示模组200的其他技术效果可以参考显示模组100的技术效果， 出于简洁的目的，此处不再进行重复描述。
图10示出了显示模组300的部分结构的剖面示意图。除了第一盖板102和第二盖板103与固定装置107的结合方式不同之外，图10中示出的显示模组300具有与显示模组100基本相同的构造，并且因此使用相同的附图标记来指代相同的部件。因此，图10中具有与显示模组100相同附图标记的部件的详细作用及功能可以参考对显示模组100的说明，此处不再赘述。为了简洁起见，下面仅介绍不同之处。
如图10所示，第二盖板103的侧表面上没有设置粘合剂106。替代地，第一盖板102和第二盖板103的侧表面均与固定装置107直接接触，从而固定到固定装置107上。具体地，第二盖板103的边缘与固定装置107的凸出结构直接接触，固定装置107的侧边可以压住第一盖板102和第二盖板103的边缘，从而实现固定作用。通过使固定装置107与第一盖板102和第二盖板103的边缘紧密接触而不存在缝隙，可以防止阵列基板101射出的光线从缝隙漏出。图10的固定装置107的开口尺寸可以大于图1的固定装置107的开口尺寸。
显示模组300的其他技术效果可以参考显示模组100的技术效果，出于简洁的目的，此处不再进行重复描述。
图11示出了显示装置400的框图，该显示装置400包括在前面任一个实施例中描述的显示模组。显示装置400可以是具有显示功能的任意适当的装置，包括但不限于头戴式显示设备。显示装置400可以应用于近眼显示、虚拟现实、增强现实等领域中，为用户带来绝佳的视觉体验。
显示装置400可以与前面实施例描述的显示模组具有基本相同的技术效果，因此，出于简洁的目的，此处不再进行重复描述。
将理解的是，尽管术语第一、第二、第三等在本文中可以用来描述各种元件、部件、区、层和/或部分，但是这些元件、部件、区、层和/或部分不应当由这些术语限制。这些术语仅用来将一个元件、部件、区、层或部分与另一个区、层或部分相区分。因此，上面讨论的第一元件、部件、区、层或部分可以被称为第二元件、部件、区、层或部分而不偏离本公开的教导。
诸如“行”、“列”、“在...之下”、“在...之上”、“左”、“右”等等之类的空间相对术语在本文中可以为了便于描述而用来描 述如图中所图示的一个元件或特征与另一个(些)元件或特征的关系。将理解的是，这些空间相对术语意图涵盖除了图中描绘的取向之外在使用或操作中的器件的不同取向。例如，如果翻转图中的器件，那么被描述为“在其他元件或特征之下”的元件将取向为“在其他元件或特征之上”。因此，示例性术语“在...之下”可以涵盖在...之上和在...之下的取向两者。器件可以取向为其他方式(旋转90度或以其他取向)并且相应地解释本文中使用的空间相对描述符。另外，还将理解的是，当层被称为“在两个层之间”时，其可以是在该两个层之间的唯一的层，或者也可以存在一个或多个中间层。
本文中使用的术语仅出于描述特定实施例的目的并且不意图限制本公开。如本文中使用的，单数形式“一个”、“一”和“该”意图也包括复数形式，除非上下文清楚地另有指示。将进一步理解的是，术语“包括”和/或“包含”当在本说明书中使用时指定所述特征、整体、步骤、操作、元件和/或部件的存在，但不排除一个或多个其他特征、整体、步骤、操作、元件、部件和/或其群组的存在或添加一个或多个其他特征、整体、步骤、操作、元件、部件和/或其群组。如本文中使用的，术语“和/或”包括相关联的列出项目中的一个或多个的任意和全部组合。在本说明书的描述中，参考术语“一个实施例”、“另一个实施例”等的描述意指结合该实施例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
将理解的是，当元件或层被称为“在另一个元件或层上”、“连接到另一个元件或层”、“耦合到另一个元件或层”或“邻近另一个元件或层”时，其可以直接在另一个元件或层上、直接连接到另一个元件或层、直接耦合到另一个元件或层或者直接邻近另一个元件或层，或者可以存在中间元件或层。相反，当元件被称为“直接在另一个元件或层上”、“直接连接到另一个元件或层”、“直接耦合到另一个元件或层”、“直接邻近另一个元件或层”时，没有中间元件或层存 在。然而，在任何情况下“在...上”或“直接在...上”都不应当被解释为要求一个层完全覆盖下面的层。
本文中参考本公开的理想化实施例的示意性图示(以及中间结构)描述本公开的实施例。正因为如此，应预期例如作为制造技术和/或公差的结果而对于图示形状的变化。因此，本公开的实施例不应当被解释为限于本文中图示的区的特定形状，而应包括例如由于制造导致的形状偏差。因此，图中图示的区本质上是示意性的，并且其形状不意图图示器件的区的实际形状并且不意图限制本公开的范围。
除非另有定义，本文中使用的所有术语(包括技术术语和科学术语)具有与本公开所属领域的普通技术人员所通常理解的相同含义。将进一步理解的是，诸如那些在通常使用的字典中定义的之类的术语应当被解释为具有与其在相关领域和/或本说明书上下文中的含义相一致的含义，并且将不在理想化或过于正式的意义上进行解释，除非本文中明确地如此定义。
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，可轻易想到变化或替换，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 (20)

  1. 一种显示模组，包括：
    阵列基板，包括衬底；
    第一盖板，位于所述阵列基板的出光侧；
    第二盖板，位于所述第一盖板远离所述阵列基板的一侧；以及
    第一遮光层，位于所述第一盖板靠近所述阵列基板的一侧，
    其中，所述第一遮光层在所述衬底上的正投影落在所述第一盖板在所述衬底上的正投影之内，并且所述第一遮光层围绕所述第一盖板的边缘设置。
  2. 根据权利要求1所述的显示模组，其中，所述第一遮光层的形状为环形且围绕所述第一盖板的四周边缘设置，所述阵列基板包括显示区，所述显示区在所述衬底上的正投影与所述第一遮光层在所述衬底上的正投影不交叠。
  3. 根据权利要求1或2所述的显示模组，其中，所述阵列基板还包括第二遮光层，所述第二遮光层至少围绕所述显示区的边界设置，并且所述第二遮光层在所述衬底上的正投影落在所述显示区在所述衬底上的正投影之内。
  4. 根据权利要求3所述的显示模组，其中，所述第一遮光层的厚度大于所述第二遮光层的厚度。
  5. 根据权利要求3或4所述的显示模组，其中，所述第一遮光层和所述第二遮光层选自下列中的一种：油墨、黑色导电胶、黑色树脂、具有不同颜色的至少两个彩膜层的堆叠结构。
  6. 根据权利要求1所述的显示模组，其中，所述第一遮光层围绕所述第一盖板的四周边缘设置，所述阵列基板包括显示区，所述显示区在所述衬底上的正投影与所述第一遮光层在所述衬底上的正投影部分地交叠。
  7. 根据权利要求6所述的显示模组，其中，所述第一遮光层包括第一部分和第二部分，所述第一部分在所述衬底上的正投影落在所述显示区在所述衬底上的正投影之内，所述第二部分在所述衬底上的正投影与所述显示区在所述衬底上的正投影不交叠，所述第一部分的厚度小于所述第二部分的厚度。
  8. 根据权利要求1-7中任一项所述的显示模组，还包括粘合剂和固定装置，其中，
    所述第二盖板包括面向所述第一盖板的第一表面、与所述第一表面相对的第二表面、以及连接所述第一表面和所述第二表面的侧表面，所述粘合剂布置在所述第二盖板的侧表面上，所述第二盖板经由所述粘合剂粘附到所述固定装置，并且
    所述第一盖板远离所述阵列基板的表面的一部分与所述粘合剂接触，所述第一盖板经由所述粘合剂粘附到所述第二盖板。
  9. 根据权利要求8所述的显示模组，其中，所述粘合剂在所述衬底上的正投影落在所述第一遮光层在所述衬底上的正投影之内。
  10. 根据权利要求8或9所述的显示模组，其中，所述粘合剂在所述衬底上的正投影落在所述固定装置在所述衬底上的正投影之内。
  11. 根据权利要求1-7中任一项所述的显示模组，还包括固定装置，其中，所述第一盖板和所述第二盖板的边缘均与所述固定装置直接接触。
  12. 根据权利要求1-11中任一项所述的显示模组，其中，所述第二盖板的厚度小于所述第一盖板的厚度。
  13. 根据权利要求1-12中任一项所述的显示模组，其中，所述第一盖板与所述第二盖板之间的间距小于所述第一盖板与所述阵列基板之间的间距。
  14. 根据权利要求1-13中任一项所述的显示模组，其中，
    所述第二盖板包括面向所述第一盖板的第一表面、与所述第一表面相对的第二表面、以及连接所述第一表面和所述第二表面的侧表面，
    所述第一盖板包括面向所述阵列基板的第三表面、与所述第三表面相对的第四表面、以及连接所述第三表面和所述第四表面的侧表面，
    所述第二盖板的侧表面的粗糙度大于所述第一盖板的侧表面的粗糙度。
  15. 根据权利要求14所述的显示模组，其中，所述第一盖板的第三表面的粗糙度大于所述第一盖板的第四表面的粗糙度。
  16. 根据权利要求1-15中任一项所述的显示模组，其中，
    所述阵列基板还包括绑定区，所述绑定区布置有绑定电极，并且
    所述第一盖板在所述衬底上的正投影与所述绑定电极在所述衬底 上的正投影不交叠，所述第二盖板在所述衬底上的正投影与所述绑定电极在所述衬底上的正投影至少部分地交叠。
  17. 根据权利要求16所述的显示模组，
    其中，所述第一遮光层包括首尾依次连接的第一区段、第二区段、第三区段以及第四区段，所述第一区段在所述衬底上的正投影与所述绑定电极在所述衬底上的正投影之间的间距小于所述第二区段、第三区段以及第四区段在所述衬底上的正投影分别与所述绑定电极在所述衬底上的正投影之间的间距，并且，
    其中，所述第一区段沿第一方向的宽度小于所述第三区段沿所述第一方向的宽度，并且所述第一区段沿所述第一方向的宽度小于所述第二区段和所述第四区段沿第二方向的宽度，所述第一方向与所述第二方向相交。
  18. 根据权利要求1-17中任一项所述的显示模组，还包括位于所述第二盖板远离所述第一盖板一侧的透镜，其中，
    所述透镜在垂直于所述透镜的主光轴的方向上包括第一端部和与所述第一端部相对的第二端部，
    所述第一端部在所述衬底上的正投影落在所述第二盖板在所述衬底上的正投影之外但落在所述第一盖板在所述衬底上的正投影之内，并且
    所述第二端部在所述衬底上的正投影落在所述第二盖板在所述衬底上的正投影之外但落在所述第一盖板在所述衬底上的正投影之内。
  19. 根据权利要求1-18中任一项所述的显示模组，其中，所述第二盖板在所述衬底上的正投影落在所述第一盖板在所述衬底上的正投影之内。
  20. 一种显示装置，包括根据权利要求1-19中任一项所述的显示模组。
PCT/CN2022/125003 2022-10-13 2022-10-13 显示模组、显示装置 WO2024077535A1 (zh)

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