Backlight module, display panel and electronic device

Abstract

Embodiments of the present application provide a backlight module, a display panel and an electronic device, and relate to the technical field of display panels. The backlight module comprises a shell, a light source, a light guide plate, a light processing layer group, a first fluorescent ink layer and a rubber frame. The light processing layer group comprises a quantum dot film, a prism sheet, a diffusion sheet and a first reflective sheet. The first fluorescent ink layer is arranged at the edge area of the side surface of at least one film layer in the light processing layer group away from the back plate, and the first fluorescent ink layer can emit yellow light under the irradiation of blue light. The surface of the rubber frame towards the quantum dot film is a first surface, and the color of the first surface comprises yellow, so that the blue light irradiated to the first surface appears as white light after reflection. In the embodiments of the present application, the blue light emitted by the light source can be finally mixed into white light through the first fluorescent ink layer and the first surface, the risk of blue light leakage phenomenon at the edge of the backlight module is reduced, and the display performance of the display panel is met.

Description

Technical Field

[0001] This application relates to the technical field of headphones, and more particularly to a backlight module, display panel, and electronic device. Background Technology

[0002] Display panels typically include a backlight module and a liquid crystal layer, with the liquid crystal layer located on one side of the backlight module. The backlight module includes a light source and a quantum dot film. The light source emits blue light, and the quantum dot film converts a portion of the blue light emitted by the light source into red and green light.

[0003] The edges of quantum dot films often fail, making it impossible to convert blue light into red and green light. This results in blue light leakage at the edges of the backlight module, causing a "blue edge" on the display panel and affecting its display performance. Utility Model Content

[0004] The embodiments of this application disclose a backlight module, a display panel, and an electronic device, which are used to reduce the risk of blue light leakage at the edges of the backlight module and improve the display performance of the display panel.

[0005] On one hand, embodiments of this application provide a backlight module. The backlight module includes a housing, a light source, a light guide plate, a light processing layer assembly, a first fluorescent ink layer, and a frame. The housing includes a back plate. The light source is disposed on one side of the back plate along the thickness direction and is used to emit blue light. The light guide plate is disposed on the same side of the back plate along the thickness direction of the back plate as the light source, and the light guide plate and the light source are disposed adjacent to each other along a first direction. The light processing layer assembly includes a quantum dot film, a diffuser, and a first reflective sheet. The quantum dot film is stacked on the side of the light guide plate away from the back plate and is used to emit red and green light under blue light irradiation. The diffuser is stacked on the side of the quantum dot film away from the light guide plate and is used to diffuse the light. The first reflective sheet is stacked between the light guide plate and the back plate and is used to reflect light to the quantum dot film. The stacking direction is perpendicular to the first direction. The first fluorescent ink layer is disposed on the edge region of at least one film layer in the light processing layer assembly on the surface away from the back plate, and the first fluorescent ink layer is capable of emitting yellow light under blue light irradiation. The frame surrounds at least a portion of the light guide plate along its circumference and is connected to the housing. The surface of the frame facing the quantum dot film is a first surface, and the color of the first surface includes yellow, so that blue light irradiated onto the first surface is reflected and appears as white light.

[0006] In some possible implementations, a first fluorescent ink layer is disposed on a first reflective sheet.

[0007] In some possible implementations, along a first direction, the first reflective sheet includes a first reflective region and a second reflective region, with the first reflective region located near the edge of the first reflective sheet relative to the second reflective region. The first fluorescent ink layer includes a first coating portion and a plurality of first ink dots, the first coating portion being uniformly coated on the first reflective region, and the plurality of first ink dots being disposed on the second reflective region.

[0008] In some possible implementations, along a first direction, the second reflective zone includes a first zone, a second zone, and a third zone, which are sequentially located away from the edge of the first reflective sheet. The density of multiple first ink dots in the first zone is greater than the density of multiple first ink dots in the second zone. The density of multiple first ink dots in the second zone is greater than the density of multiple first ink dots in the third zone.

[0009] In some possible implementations, along the second direction, the first reflective sheet includes a third reflective region and a fourth reflective region, with the third reflective region located near the edge of the first reflective sheet relative to the fourth reflective region. The first fluorescent ink layer includes a second coating portion and second ink dots, with the second coating portion uniformly coated on the third reflective region and a plurality of second ink dots disposed on the fourth reflective region. The second direction is perpendicular to the first direction.

[0010] In some possible implementations, the backlight module further includes a second reflective sheet and a second fluorescent ink layer. One end of the second reflective sheet is located on the side of the light source away from the backplate, and the other end of the second reflective sheet is located between the light guide plate and the quantum dot film. The second fluorescent ink layer is disposed on the surface of the second reflective sheet near the light source, and at least a portion of the second fluorescent ink layer is disposed opposite to the light source. The second fluorescent ink layer is capable of emitting yellow light under blue light illumination.

[0011] In some possible implementations, the second fluorescent ink layer includes a third coating portion, which is uniformly coated on the surface of the second reflector near the light source, and at least a portion of the third coating portion is disposed opposite to the light source.

[0012] In some possible implementations, the backlight module also includes a support sheet disposed between the light guide plate and the first reflective sheet. The surface of the support sheet facing the quantum dot film is a second surface, and the color of the second surface includes yellow, so that blue light irradiated onto the second surface is reflected and appears as white light.

[0013] In some possible implementations, the backlight module also includes a composite prism, which is stacked between the diffuser and the quantum dot film.

[0014] On the other hand, embodiments of this application provide a display panel. The display panel includes a liquid crystal layer and a backlight module as described above. The liquid crystal layer is stacked on the side of the diffuser sheet of the backlight module away from the quantum dot film of the backlight module.

[0015] In another aspect, embodiments of this application provide an electronic device. The electronic device includes a display panel and a housing as described above, the display panel and the housing being connected.

[0016] In summary, the embodiments of this application have at least the following beneficial effects:

[0017] In the embodiments of this application, the backlight module includes a quantum dot film. The quantum dot film (quantum dot layer) can emit red light with a peak wavelength of 630nm to 670nm under blue light irradiation, so that the backlight module can emit red light of a beneficial wavelength, which helps to reduce eye fatigue when using electronic devices.

[0018] The backlight module includes a first fluorescent ink layer located at the edge region of at least one film layer in the light processing layer group on the side away from the back panel. The first surface of the frame facing the quantum dot film is yellow, so that the blue light emitted by the light source can be mixed into white light, reducing the risk of blue light leakage at the edge of the backlight module and improving the display performance of the display panel.

[0019] Compared to setting a first fluorescent ink layer separately or setting the color of the first surface separately, including yellow, the embodiments of this application can more systematically eliminate the influence of blue light source reflected light, which helps to reduce the risk of blue light leakage at the edge of the backlight module. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 Schematic diagrams of the structure of electronic devices provided in some embodiments of this application;

[0022] Figure 2 for Figure 1 A cross-sectional schematic diagram of the display panel along the A1-A1 direction;

[0023] Figure 3 This is a schematic diagram of the structure of a backlight module provided in some embodiments of this application;

[0024] Figure 4 for Figure 3 A cross-sectional schematic diagram of the backlight module along the A2-A2 direction;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of a portion of the G1 region;

[0026] Figure 6 for Figure 4 A magnified schematic diagram of a portion of the G2 region;

[0027] Figure 7 This is a schematic diagram of the structure of a quantum dot film provided in some embodiments of this application;

[0028] Figure 8 A schematic diagram showing the positional relationship between the first reflective sheet and the first fluorescent ink layer provided in some embodiments of this application;

[0029] Figure 9 This is a schematic diagram showing the positional relationship between the second reflective sheet and the second fluorescent ink layer, provided in some embodiments of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100-Backlight module, 101-Housing, 1011-Backplate, 1012-Frame, 10121-First part, 10122-Second part, 1012a-First sub-part, 1012b-Second sub-part, 102-Light source, 103-Light guide plate, 104-Frame, 105-Second reflector, 106-Support sheet, 107-Composite prism, 108-Shielding layer, 110-Light processing layer group, 111-Quantum dot film, 111a-Red quantum dot, 111b-Green quantum dot, 1111-Quantum dot layer, 1112-Quantum dot diffusion layer, 112-Diffuser, 113-First reflector, 1131-First reflective area, 1132-Second reflective area, 1132a-First area 1132b - Second region, 1132c - Third region, 1133 - Third reflective region, 1134 - Fourth reflective region, 120 - First fluorescent ink layer, 121 - First coating part, 122 - Second coating part, 123 - First ink dot, 124 - Second ink dot, 130 - Second fluorescent ink layer, 131 - Third coating part, 141 - Circuit board, 142 - First adhesive layer, 143 - First fastener, 144 - Second fastener, 145 - Third adhesive layer, 146 - Fourth adhesive layer, 200 - Display panel, 210 - Liquid crystal layer, 211 - Liquid crystal molecule, 300 - Electronic device, 310 - Housing, P1 - First surface, P2 - Second surface, X - First direction, Y - Second direction. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In this application, the terms "upper," "left," "right," "front," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0034] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain circumstances to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0035] Furthermore, the terms "installation," "setup," "equipped with," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0036] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0037] Figure 1 These are schematic diagrams illustrating the structure of electronic devices provided in some embodiments of this application. For example... Figure 1 As shown, an embodiment of this application provides an electronic device 300. The electronic device 300 has an image display function. For example, the electronic device 300 can be a mobile phone, tablet computer, laptop computer, learning machine, smartwatch, smart bracelet, etc. The embodiments of this application do not further limit the specific form of the electronic device 300.

[0038] like Figure 1 As shown, the electronic device 300 may include a housing 310 and a display panel 200, which are connected to each other.

[0039] The display panel 200 can display image information. The display panel 200 can be a liquid crystal display (LCD). The display panel 200 is connected to the housing 310, so that the housing 310 can protect the display panel 200.

[0040] Figure 2 for Figure 1 A schematic cross-sectional view of the display panel along the A1-A1 direction. In some examples, such as... Figure 2 As shown, the display panel 200 includes a backlight module 100 and a liquid crystal layer 210, with the liquid crystal layer 210 stacked on one side of the backlight module 100.

[0041] Understandably, the backlight module 100 is capable of emitting light. For example... Figure 2 As shown, the liquid crystal layer 210 includes a plurality of liquid crystal molecules 211. The display panel 200 may also include a driving circuit (not shown in the figure), which may include a thin film transistor (TFT) circuit. The driving circuit can apply an electric field to the liquid crystal molecules 211, and the liquid crystal molecules 211 can be deflected under the action of the electric field, so that the display panel 200 can display image information.

[0042] With the development of network technology, people are becoming increasingly reliant on electronic devices. However, prolonged close-range viewing of electronic device screens (i.e., display panels) can easily cause eye strain.

[0043] In recent years, red light eye protection technology has developed rapidly. Red light with a wavelength of 650 nanometers to 720 nm is beneficial to the human eye. It can effectively improve blood circulation in the fundus, promote the secretion of beneficial neurotransmitters (dopamine) and increase the thickness of the choroid, accelerate cell metabolism, help repair and rebuild damaged cells, and relieve eye fatigue.

[0044] In the embodiments of this application, the backlight module 100 can provide red light with a wavelength of 650nm to 720nm. The backlight module 100 is described below with an example.

[0045] Figure 3 This is a schematic diagram of the structure of a backlight module provided in some embodiments of this application. Figure 4 for Figure 3 A schematic diagram of the cross-section of the backlight module along the A2-A2 direction. Figure 5 for Figure 4 A magnified schematic diagram of the local structure of region G1. Figure 6 for Figure 4 A magnified schematic diagram of the local structure of region G2.

[0046] In some examples, such as Figure 3, Figure 4 , Figure 5 and Figure 6 As shown, the backlight module 100 includes a housing 101, a light source 102, a light guide plate 103, a light processing layer group 110, and a frame 104.

[0047] The material of the housing 101 may include metal, such as aluminum alloy. Alternatively, the housing 101 may also include metallic and non-metallic materials. The embodiments of this application do not further limit the material of the housing 101.

[0048] like Figure 5 and Figure 6 As shown, the housing 101 includes a back plate 1011 and a frame 1012. The frame 1012 is located on one side of the back plate 1011 along its thickness direction, and the frame 1012 surrounds the back plate 1011 circumferentially. The frame 1012 and the back plate 1011 are connected. For example, the back plate 1011 and the frame 1012 can be an integrally formed structure to improve the reliability of their connection.

[0049] like Figure 6 As shown, the light source 102 is disposed on one side of the back plate 1011 along the thickness direction of the back plate 1011, and the light source 102 is used to emit blue light. For example, the light source 102 may include a light emitting diode (LED). The light source 102 can be used to emit blue light with a peak wavelength of 430nm to 480nm, or the light source 102 can also be used to emit blue light of other wavelengths, which is not further limited in the embodiments of this application.

[0050] Continue to refer to Figure 6 For example, the backlight module 100 may include a circuit board 141, which may be at least one of a printed circuit board (PCB) and a flexible printed circuit board. The circuit board 141 is disposed between the backplate 1011 and the light source 102, and the light source 102 is connected to the circuit board 141 so that the power supply can supply power to the light source 102 through the circuit board 141.

[0051] Understandably, along the thickness direction of the back panel 1011, the frame 1012 and the light source 102 are located on the same side of the back panel 1011. The frame 1012 may include a first portion 10121 and a second portion 10122. The first portion 10121 may be U-shaped or approximately U-shaped, and the second portion 10122 is located on one side of the first portion 10121 along the first direction X and is connected to the first portion 10121. In this way, the first portion 10121 and the second portion 10122 can surround the back panel 1011. Figure 6As shown, along the first direction X, the light source 102 can be arranged adjacent to the second part 10122.

[0052] Continue to refer to Figure 6 The second part 10122 may include a first sub-part 1012a and a second sub-part 1012b. The first sub-part 1012a extends along the thickness direction of the back plate 1011 and is connected to the edge of the back plate 1011. The second sub-part 1012b is connected to the edge of the first sub-part 1012a on the side away from the back plate 1011 and extends along a first direction X. The second sub-part 1012b and the back plate 1011 are disposed opposite to each other.

[0053] The light source 102 can be located between the back plate 1011 and the second sub-part 1012b, so that the second sub-part 1012b can protect the light source 102 and reduce the risk of damage to the light source 102.

[0054] Continue to refer to Figure 5 and Figure 6 The light guide plate 103 and the light source 102 are disposed on the same side of the back plate 1011 along the thickness direction of the back plate 1011, and the light guide plate 103 and the light source 102 are disposed adjacent to each other along the first direction X.

[0055] Understandably, the light guide plate 103 can reflect and refract light, thereby guiding the light so that the blue light emitted by the light source 102 can shine in a direction away from the back plate 1011.

[0056] For example, a backlight module in which the light source 102 is positioned along the first direction X on one side of the light guide plate 103 can be called a side-lit backlight module.

[0057] Understandably, the light processing layer 110 is capable of performing conversions and other processing on light. (Continue referring to...) Figure 5 and Figure 6 The light processing layer group 110 includes a quantum dot film 111, a diffuser 112, and a first reflector 113.

[0058] A quantum dot film 111 is stacked on the side of the light guide plate 103 away from the back plate 1011, and is used to emit red and green light under blue light illumination.

[0059] Figure 7 This is a schematic diagram of the structure of a quantum dot film provided in some embodiments of this application. For example, the quantum dot film 111 may include a quantum dot layer 1111, which includes red quantum dots 111a and green quantum dots 111b.

[0060] When blue light emitted from light source 102 shines on red quantum dot 111a, it can emit red light; when blue light emitted from light source 102 shines on green quantum dot 111b, it can emit green light. In this way, the quantum dot layer 1111 can emit red and green light when illuminated by blue light.

[0061] For example, the wavelengths of the red and green light emitted by the quantum dot layer 1111 can be adjusted by changing the diameters of the red quantum dot 111a and the green quantum dot 111b.

[0062] For example, the quantum dot layer 1111 can emit red light with a peak wavelength of 630nm to 670nm, and the quantum dot layer 1111 can emit green light with a peak wavelength of 520nm to 550nm. Alternatively, the quantum dot layer 1111 can also emit red and green light of other wavelengths, which is not further limited in the embodiments of this application.

[0063] Understandably, the red and green light emitted by the quantum dot layer 1111 can be mixed with the blue light emitted by the light source 102 to form white light, enabling the display panel 200 to achieve full-color display.

[0064] The backlight module 100 includes a quantum dot film 111, which emits red light with a peak wavelength of 630nm to 670nm under blue light irradiation, enabling the backlight module 100 to emit red light of a beneficial wavelength, which helps to reduce eye fatigue when using the electronic device 300.

[0065] Continue to refer to Figure 7 The quantum dot film 111 may further include two quantum dot diffusion layers 1112, with the quantum dot layer 1111 stacked between the two quantum dot diffusion layers 1112. The quantum dot diffusion layers 1112 can atomize the light emitted by the quantum dot layers 1111 to improve the brightness uniformity of the quantum dot film 111. For example, the quantum dot diffusion layer 1112 can be a high-haze diffusion layer.

[0066] Continue to refer to Figure 5 and Figure 6 The diffuser 112 is stacked on the side of the quantum dot film 111 away from the light guide plate 103 and is used to atomize the light.

[0067] Understandably, the diffuser 112 can reflect and refract light, allowing the light emitted by the quantum dot film 111 to be atomized, thereby improving the brightness uniformity of the backlight module 100. For example, the diffuser 112 can be a low-haze diffuser to reduce the impact of the diffuser 112 on the overall brightness of the backlight module 100.

[0068] In some examples, such as Figure 5 and Figure 6 As shown, the liquid crystal layer 210 is stacked on the side of the diffuser 112 away from the quantum dot film 111. In this way, the light emitted from the quantum dot film 111 is atomized by the diffuser 112 and can then illuminate the liquid crystal layer 210, thereby enabling the backlight module 100 to provide light to the liquid crystal layer 210.

[0069] Continue to refer to Figure 5 and Figure 6 The first reflective sheet 113 is stacked between the light guide plate 103 and the back plate 1011 to reflect light to the quantum dot film 111. This arrangement can reduce the risk of light leakage in the backlight module 100 and reduce light loss, which is beneficial to improving the brightness of the backlight module 100.

[0070] For example, the stacking direction Z (e.g., the stacking direction of quantum dot film 111 and light guide plate 103, and the stacking direction of first reflective sheet 113 and light guide plate 103) is perpendicular to the first direction X. Understandably, the stacking direction Z and the thickness direction of backplate 1011 are the same.

[0071] In some examples, the frame 104 surrounds at least a portion of the light guide plate 103 circumferentially and is connected to the housing 101.

[0072] For example, the material of the frame 104 may include plastic. The frame 104 may be U-shaped or approximately U-shaped, and the frame 104 surrounds three sides of the light guide plate 103 circumferentially, while avoiding the light source 102. For example, as Figure 5 As shown, the frame 104 can be connected to the first part 10121.

[0073] Continue to refer to Figure 5 and Figure 6 In some examples, the backlight module 100 also includes a composite prism 107, which is stacked between the diffuser 112 and the quantum dot film 111.

[0074] Understandably, the composite prism 107 can reflect and refract light to increase the intensity of light illuminating the diffuser 112, thereby improving the brightness of the backlight module 100.

[0075] For example, such as Figure 5 and Figure 6 As shown, the backlight module 100 may also include a first fixing member 143 and a second fixing member 144.

[0076] like Figure 5 and Figure 6As shown, the first fixing member 143 and the second fixing member 144 are both located on the side of the diffuser 112 away from the composite prism 107. The first fixing member 143 connects the diffuser 112 and the frame 104, and the second fixing member 144 connects the outer surface of the diffuser 112 and the second sub-part 1012b.

[0077] Understandably, the first fixing member 143 and the second fixing member 144 can fix components such as diffuser 112, composite prism 107, quantum dot film 111 and light guide plate 103, reduce the risk of displacement or shaking of components such as diffuser 112, composite prism 107, quantum dot film 111 and light guide plate 103, and improve the reliability of backlight module 100.

[0078] For example, the first fastener 143 and the second fastener 144 may include transparent material to reduce the effect of the first fastener 143 and the second fastener 144 on light.

[0079] Continue to refer to Figure 5 and Figure 6 For example, the backlight module 100 may also include a shielding layer 108. The material of the shielding layer 108 includes metals, such as at least one of gold, silver, copper, iron and aluminum. Alternatively, the shielding layer 108 may also include other metallic materials. The embodiments of this application do not further limit the material of the shielding layer 108.

[0080] The shielding layer 108 is connected to the housing 101 (including the back plate 1011 and the frame 1012) and is bent to the side of the first fastener 143 and the second fastener 144 away from the back plate 1011.

[0081] Understandably, the shielding layer 108 can serve as electromagnetic shielding, reducing the mutual influence between the backlight module 100 and other components.

[0082] Understandably, the number of red quantum dots 111a and green quantum dots 111b at the edge of the quantum dot film 111 (quantum dot layer 1111) is relatively small, affecting the conversion of blue light. This results in stronger blue light intensity at the edge of the quantum dot film 111, causing blue light leakage at the edge of the backlight module 100, which in turn causes a "blue edge" on the display panel 200 and affects the display performance of the display panel 200.

[0083] Figure 8 This is a schematic diagram showing the positional relationship between the first reflective sheet and the first fluorescent ink layer provided in some embodiments of this application.

[0084] In some examples, such as Figure 8As shown, the backlight module 100 also includes a first fluorescent ink layer 120. The first fluorescent ink layer 120 is disposed on the edge region of at least one film layer in the light processing layer group 110 on the side of the surface away from the back plate 1011, and the first fluorescent ink layer 120 can emit yellow light under blue light irradiation.

[0085] For example, the first fluorescent ink layer 120 may be located in the edge region of one of the quantum dot film 111, diffuser 112 and first reflective sheet 113 on the side of the surface away from the back plate 1011; or, the first fluorescent ink layer 120 may be located in the edge region of two of the quantum dot film 111, diffuser 112 and first reflective sheet 113 on the side of the surface away from the back plate 1011; or, the first fluorescent ink layer 120 may be located in the edge region of three of the quantum dot film 111, diffuser 112 and first reflective sheet 113 on the side of the surface away from the back plate 1011.

[0086] The first fluorescent ink layer 120 may include yellow fluorescent ink. The color range of the yellow fluorescent ink in the first fluorescent ink layer 120 on the Pantone color chart may be 100U-110U, and the concentration of the yellow fluorescent ink in the first fluorescent ink layer 120 may be 10% to 40%. Alternatively, the yellow fluorescent ink in the first fluorescent ink layer 120 may also be other color numbers and concentrations. The embodiments of this application do not further limit the color number and concentration of the yellow fluorescent ink in the first fluorescent ink layer 120.

[0087] Understandably, yellow fluorescent ink can emit yellow light under blue light, enabling the first fluorescent ink layer 120 to emit yellow light under blue light. The yellow light emitted by the first fluorescent ink layer 120 can mix with the blue light at the edge of the quantum dot film 111 to form white light, thereby reducing the risk of blue light leakage at the edge of the backlight module 100 and improving the display performance of the display panel 200.

[0088] For example, the thickness of the first fluorescent ink layer 120 can range from 0.01 mm to 0.05 mm. For instance, the thickness of the first fluorescent ink layer 120 can be 0.02 mm, 0.03 mm, or 0.04 mm. The embodiments of this application do not further limit the thickness of the first fluorescent ink layer 120.

[0089] Reference Figure 5 In some examples, the surface of the frame 104 facing the quantum dot film 111 is a first surface P1, and the color of the first surface P1 includes yellow so that blue light irradiated onto the first surface P1 is reflected and appears as white light.

[0090] For example, the frame 104 can be entirely yellow, or only the first surface P1 of the frame 104 can be yellow. The first surface P1 can be flat, or it can be curved or irregular.

[0091] When blue light emitted from the quantum dot film 111 shines on the first surface P1, it can be reflected by the first surface P1. The first surface P1 is yellow, so it can reflect yellow light. In this way, the blue light shining on the first surface P1 can be reflected as white light, thereby reducing the risk of blue light leakage at the edges of the backlight module 100 and improving the display performance of the display panel 200.

[0092] For example, the color range of the first surface P1 on the Pantone color chart can be 100U-110U. Alternatively, the color of the first surface P1 can also correspond to other color numbers, and the embodiments of this application do not further limit this.

[0093] The backlight module 100 includes a first fluorescent ink layer 120, which is located at the edge region of at least one film layer in the light processing layer group 110 on the side away from the back panel 1011. The first surface P1 of the frame 104 facing the quantum dot film 111 is yellow, so that the blue light emitted by the light source 102 can be mixed into white light, reducing the risk of blue light leakage at the edge of the backlight module 100 and improving the display performance of the display panel 200.

[0094] Compared to setting the first fluorescent ink layer 120 separately or setting the color of the first surface P1 separately, including yellow, the embodiments of this application can more systematically eliminate the influence of blue light source reflected light, which helps to reduce the risk of blue light leakage at the edge of the backlight module 100.

[0095] Continue to refer to Figure 8 In some examples, the first fluorescent ink layer 120 is disposed on the first reflective sheet 113.

[0096] For example, the first fluorescent ink layer 120 can be set on the first reflective sheet 113 by screen printing.

[0097] Compared to placing the first fluorescent ink layer 120 on the quantum dot film 111, placing the first fluorescent ink layer 120 on the first reflective sheet 113 helps to reduce the cost of the backlight module 100.

[0098] Compared to placing the first fluorescent ink layer 120 on the diffuser 112, placing the first fluorescent ink layer 120 on the first reflective sheet 113 can reduce the impact of the first fluorescent ink layer 120 on the image display, reduce the risk of the first fluorescent ink layer 120 being visible to the naked eye, and help improve the display performance of the display panel 200.

[0099] Continue to refer to Figure 8 In some examples, along the first direction X, the first reflective sheet 113 includes a first reflective area 1131 and a second reflective area 1132, with the first reflective area 1131 being closer to the edge of the first reflective sheet 113 than the second reflective area 1132.

[0100] like Figure 8 As shown, the first reflective sheet 113 may include two first reflective areas 1131, which are spaced apart along the first direction X and are respectively close to the two side edges of the first reflective sheet 113 along the first direction X.

[0101] Along the first direction X, the width of the first reflective area 1131 can be less than or equal to 1 millimeter (mm). For example, the width of the first reflective area 1131 along the first direction X can be 0.2 mm, 0.5 mm, or 0.8 mm. The embodiments of this application do not further limit the value of the width of the first reflective area 1131 along the first direction X. The widths of the two first reflective areas 1131 along the first direction X can be the same or different.

[0102] Furthermore, the first reflective sheet 113 may include two second reflective areas 1132, which are spaced apart along the first direction X and are located on the side of the two first reflective areas 1131 away from the edge of the first reflective sheet 113.

[0103] Continue to refer to Figure 8 In some examples, the first fluorescent ink layer 120 includes a first coating portion 121 and a plurality of first ink dots 123. The first coating portion 121 is uniformly coated on the first reflective area 1131, and the plurality of first ink dots 123 are disposed in the second reflective area 1132.

[0104] The first coating portion 121 can be a continuous ink film layer, allowing the first coating portion 121 to be uniformly coated within the first reflective area 1131. The first ink dots 123 are spaced-apart dots of ink. Multiple first ink dots 123 can be spaced-apart within the second reflective area 1132.

[0105] The diameter of the first ink dot 123 can range from 0.05 mm to 0.2 mm. For example, the diameter of the first ink dot 123 can be 0.1 mm, 0.15 mm, or 0.18 mm. The embodiments of this application do not further limit the diameter of the first ink dot 123. It is understood that the diameters of multiple first ink dots 123 can be the same or different.

[0106] A first coating portion 121 is provided in the first reflective area 1131, such that the first coating portion 121 can be close to the edge of the first reflective sheet 113 along the first direction X, that is, the first coating portion 121 can be close to the edge of the quantum dot film 111 along the first direction X.

[0107] Understandably, the closer to the edge of the quantum dot film 111, the more severe the failure of the quantum dot film 111, and the greater the blue light intensity. Conversely, the farther away from the edge of the quantum dot film 111, the less severe the failure of the quantum dot film 111, and the smaller the blue light intensity.

[0108] A first coating portion 121 is provided in the first reflective area 1131, and a plurality of first ink dots 123 are provided in the second reflective area 1132, so that the intensity of yellow light in the first reflective area 1131 is greater than the intensity of yellow light in the second reflective area 1132. That is, the intensity of yellow light emitted by the first fluorescent ink layer 120 can correspond to the intensity of blue light emitted by the quantum dot film 111. On the one hand, it can reduce the risk of blue light leakage in the backlight module 100, and on the other hand, it can reduce the impact of excessive yellow light intensity on other colors of light (such as red light and green light), which is beneficial to improving the display performance of the display panel 200.

[0109] Continue to refer to Figure 8 In some examples, along the first direction X, the second reflective area 1132 includes a first area 1132a, a second area 1132b, and a third area 1132c, which are successively located away from the edge of the first reflective sheet 113.

[0110] Along the first direction X, the width of the first region 1132a can range from 2mm to 10mm. For example, the width of the first region 1132a along the first direction X can be 4mm, 5mm, or 8mm, etc. The embodiments of this application do not further limit the value of the width of the first region 1132a along the first direction X.

[0111] Understandably, there can be two first regions 1132a, and the widths of the two first regions 1132a along the first direction X can be the same or different.

[0112] Along the first direction X, the width of the second region 1132b can range from 2mm to 4mm. For example, the width of the second region 1132b along the first direction X can be 2.5mm, 3mm, or 3.5mm, etc. The embodiments of this application do not further limit the value of the width of the second region 1132b along the first direction X. It is understood that there can be two second regions 1132b, and the widths of the two second regions 1132b along the first direction X can be the same or different.

[0113] Along the first direction X, the width of the third region 1132c can be less than or equal to 6 mm. For example, the width of the third region 1132c along the first direction X can be 2 mm, 4 mm, or 5 mm, etc. The embodiments of this application do not further limit the value of the width of the third region 1132c along the first direction X.

[0114] Understandably, there can be two third zones 1132c, and the widths of the two third zones 1132c along the first direction X can be the same or different. The widths of the first zone 1132a, the second zone 1132b, and the third zone 1132c along the first direction X can be the same or different.

[0115] Continue to refer to Figure 8 In some examples, the density of the plurality of first ink dots 123 in the first region 1132a is greater than the density of the plurality of first ink dots 123 in the second region 1132b. The density of the plurality of first ink dots 123 in the second region 1132b is greater than the density of the plurality of first ink dots 123 in the third region 1132c.

[0116] This configuration ensures that the intensity of the yellow light emitted by the multiple first ink dots 123 in the first zone 1132a is greater than the intensity of the yellow light emitted by the multiple first ink dots 123 in the second zone 1132b. Furthermore, the intensity of the yellow light emitted by the multiple first ink dots 123 in the second zone 1132b is greater than the intensity of the yellow light emitted by the multiple first ink dots 123 in the third zone 1132c.

[0117] Understandably, the further away from the edge of the quantum dot film 111, the less severe the failure of the quantum dot film 111, and the lower the intensity of blue light. By adopting the above arrangement, the intensity of the yellow light emitted by the first fluorescent ink layer 120 corresponds to the intensity of the blue light emitted by the quantum dot film 111. This reduces the risk of blue light leakage in the backlight module 100 and also reduces the impact of excessively strong yellow light on other colors of light (such as red and green light), thus improving the display performance of the display panel 200.

[0118] For example, the spacing between multiple first ink dots 123 within the first region 1132a can be less than or equal to 0.5 mm. For instance, the spacing between multiple first ink dots 123 within the first region 1132a can be 0.2 mm, 0.3 mm, or 0.4 mm. Understandably, the spacing between multiple first ink dots 123 within the first region 1132a can be the same or different.

[0119] The spacing between the multiple first ink dots 123 within the second zone 1132b can be greater than 0.5 mm and less than or equal to 1 mm. For example, the spacing between the multiple first ink dots 123 within the second zone 1132b can be 0.6 mm, 0.7 mm, or 0.8 mm. Understandably, the spacing between the multiple first ink dots 123 within the second zone 1132b can be the same or different.

[0120] The spacing between multiple first ink dots 123 within the third zone 1132c can be greater than 1 mm. For example, the spacing between multiple first ink dots 123 within the third zone 1132c can be 1.5 mm, 2 mm, or 2.5 mm. Understandably, the spacing between multiple first ink dots 123 within the third zone 1132c can be the same or different.

[0121] Continue to refer to Figure 8 In some examples, along the second direction Y, the first reflective sheet 113 includes a third reflective region 1133 and a fourth reflective region 1134, with the third reflective region 1133 located near the edge of the first reflective sheet 113 relative to the fourth reflective region 1134. The second direction Y is perpendicular to the first direction X.

[0122] Understandably, the second direction Y and the first direction X can be perpendicular or approximately perpendicular. That is, the angle between the second direction Y and the first direction X can be 90°, or it can be 88° or 89°, etc.

[0123] Along the second direction Y, the width of the third reflective area 1133 can be less than or equal to 0.5 mm. For example, the width of the third reflective area 1133 along the second direction Y can be 0.2 mm, 0.3 mm, or 0.4 mm, etc. The embodiments of this application do not further limit the value of the width of the third reflective area 1133 along the second direction Y.

[0124] Understandably, there can be two third reflective areas 1133, which are spaced apart along the second direction Y and are respectively close to the two side edges of the first reflective sheet 113 along the second direction Y. The widths of the two third reflective areas 1133 along the second direction Y can be the same or different.

[0125] Along the second direction Y, the width of the fourth reflective area 1134 can range from 1mm to 3mm. For example, the width of the fourth reflective area 1134 along the second direction Y can be 1.5mm, 2mm, or 2.5mm, etc. The embodiments of this application do not further limit the value of the width of the fourth reflective area 1134 along the second direction Y.

[0126] Understandably, there can be two fourth reflective zones 1134, which are spaced apart along the second direction Y and located on the side of the two third reflective zones 1133 away from the edge of the first reflective sheet 113. The widths of the two fourth reflective zones 1134 along the second direction Y can be the same or different.

[0127] Continue to refer to Figure 8 In some examples, the first fluorescent ink layer 120 includes a second coating portion 122 and a second ink dot 124. The second coating portion 122 is uniformly coated on the third reflective region 1133, and a plurality of second ink dots 124 are disposed in the fourth reflective region 1134.

[0128] The second coating section 122 can be a continuous ink film layer, allowing the second coating section 122 to be uniformly coated within the third reflective region 1133. The second ink dots 124 are spaced-apart dots of ink. Multiple second ink dots 124 can be spaced-apart within the fourth reflective region 1134.

[0129] A second coating portion 122 is provided in the third reflective region 1133, such that the second coating portion 122 can be close to the edge of the first reflective sheet 113 along the second direction Y, that is, the second coating portion 122 can be close to the edge of the quantum dot film 111 along the second direction Y.

[0130] Understandably, the closer to the edge of the quantum dot film 111, the more severe the failure of the quantum dot film 111, and the greater the blue light intensity. Conversely, the farther away from the edge of the quantum dot film 111, the less severe the failure of the quantum dot film 111, and the smaller the blue light intensity.

[0131] A second coating portion 122 is provided in the third reflective region 1133, and a plurality of second ink dots 124 are provided in the fourth reflective region 1134. This makes the intensity of yellow light in the third reflective region 1133 greater than the intensity of yellow light in the fourth reflective region 1134. In other words, the intensity of yellow light emitted by the first fluorescent ink layer 120 corresponds to the intensity of blue light emitted by the quantum dot film 111. On the one hand, this can reduce the risk of blue light leakage in the backlight module 100. On the other hand, it can reduce the impact of excessive yellow light intensity on other colors of light (such as red and green light), which is beneficial to improving the display performance of the display panel 200.

[0132] The diameter of the second ink dot 124 can range from 0.05 mm to 0.2 mm. For example, the diameter of the second ink dot 124 can be 0.1 mm, 0.15 mm, or 0.18 mm. The embodiments of this application do not further limit the value of the diameter of the second ink dot 124. It is understood that the diameters of multiple second ink dots 124 can be the same or different.

[0133] Refer again Figure 6 In some examples, the backlight module 100 also includes a second reflector 105, one end of which is located on the side of the light source 102 away from the back plate 1011, and the other end of which is located between the light guide plate 103 and the quantum dot film 111.

[0134] For example, such as Figure 6 As shown, one end of the second reflector 105 can be connected to the surface of the first sub-part 1012a near the light source 102. For example, one end of the second reflector 105 can be bonded to the surface of the first sub-part 1012a near the light source 102 through the first adhesive layer 142, so that one end of the second reflector 105 can be located on the side of the light source 102 away from the back plate 1011.

[0135] The other end of the second reflective sheet 105 is located between the light guide plate 103 and the quantum dot film 111. For example, the second reflective sheet 105 can be bonded to the light guide plate 103 through a second adhesive layer (not shown in the figure).

[0136] Understandably, the second reflector 105 can reflect light. The light emitted by the light source 102 can be reflected by the second reflector 105 and then irradiated by the light guide plate 103. Under the guidance of the light guide plate 103, the light can be irradiated by the quantum dot film 111, which helps to improve the brightness of the backlight module 100.

[0137] Figure 9 This is a schematic diagram showing the positional relationship between the second reflective sheet and the second fluorescent ink layer, provided in some embodiments of this application.

[0138] In some examples, such as Figure 9 As shown, the backlight module 100 also includes a second fluorescent ink layer 130, which is disposed on the surface of the second reflective sheet 105 near the light source 102, and at least a portion of the second fluorescent ink layer 130 is disposed opposite to the light source 102. The second fluorescent ink layer 130 can emit yellow light under blue light illumination.

[0139] For example, the second fluorescent ink layer 130 may cover the second surface P2, or the second fluorescent ink layer 130 may be located in a portion of the second surface P2.

[0140] The second fluorescent ink layer 130 may include yellow fluorescent ink. The color range of the yellow fluorescent ink in the second fluorescent ink layer 130 on the Pantone color chart may be 100U-110U, and the concentration of the yellow fluorescent ink in the second fluorescent ink layer 130 may be 10% to 20%. Alternatively, the yellow fluorescent ink in the second fluorescent ink layer 130 may also be other color numbers and concentrations. The embodiments of this application do not further limit the color number and concentration of the yellow fluorescent ink in the second fluorescent ink layer 130.

[0141] Understandably, yellow fluorescent ink can emit yellow light under blue light, enabling the second fluorescent ink layer 130 to also emit yellow light under blue light. The second fluorescent ink layer 130 is disposed on the surface of the second reflective sheet 105 near the light source 102, allowing the yellow light emitted by the second fluorescent ink layer 130 to mix with the blue light emitted by the light source 102 to form white light. This reduces the risk of blue light leakage at the edges of the backlight module 100 and improves the display performance of the display panel 200.

[0142] For example, the thickness of the second fluorescent ink layer 130 can range from 0.01 mm to 0.05 mm. For instance, the thickness of the second fluorescent ink layer 130 can be 0.02 mm, 0.03 mm, or 0.04 mm. The embodiments of this application do not further limit the thickness of the second fluorescent ink layer 130.

[0143] For example, the second fluorescent ink layer 130 can be set on the second reflective sheet 105 by screen printing.

[0144] In some examples, the second fluorescent ink layer 130 includes a third coating portion 131, which is uniformly coated on the surface of the second reflective sheet 105 near the light source 102, and at least a portion of the third coating portion 131 is disposed opposite to the light source 102.

[0145] The third coating section 131 can be a continuous ink film layer, so that the third coating section 131 can be uniformly coated on the surface of the second reflector 105 near the light source 102.

[0146] A third coating portion 131 is provided in the second reflective sheet 105, and at least a portion of the third coating portion 131 is disposed opposite to the light source 102, so that the yellow light emitted by the third coating portion 131 can be mixed with the blue light emitted by the light source 102 to form white light, thereby reducing the influence of excessive yellow light intensity on other colors of light (such as red light and green light) and improving the display performance of the display panel 200.

[0147] In other examples, the second fluorescent ink layer 130 may include a plurality of third ink dots (not shown in the figure), which are spaced apart on the surface of the second reflector 105 near the light source 102.

[0148] The diameter of the third ink dot can range from 0.05 mm to 0.2 mm. For example, the diameter of the third ink dot can be 0.1 mm, 0.15 mm, or 0.18 mm. The embodiments of this application do not further limit the diameter of the third ink dot. It is understood that the diameters of multiple third ink dots can be the same or different.

[0149] Understandably, the second fluorescent ink layer 130 may include only the third coating portion 131, or the second fluorescent ink layer 130 may include only the third ink dot, or the second fluorescent ink layer 130 may include both the third coating portion 131 and the third ink dot.

[0150] In some examples, such as Figure 5 As shown, the backlight module 100 also includes a support sheet 106, which is disposed between the light guide plate 103 and the first reflective sheet 113.

[0151] Understandably, along the first direction X, the length of the light guide plate 103 is less than the length of the first reflective sheet support plate 113, so that the brightness of the edge area of ​​the light guide plate 103 is less than the brightness of the center area of ​​the light guide plate 103, thereby reducing the risk of excessive brightness in the edge area of ​​the backlight module 100.

[0152] The support sheet 106 is located between the light guide plate 103 and the first reflective sheet 113, and serves to support the light guide plate 103. For example, the support sheet 106 can be bonded to the light guide plate 103 by a third adhesive layer 145, and to the first reflective sheet 113 by a fourth adhesive layer 146.

[0153] For example, the material of the support sheet 106 may include polyethylene terephthalate (PET). Alternatively, the support sheet 106 may also include other materials, and the material of the support sheet 106 in the embodiments of this application is not further limited.

[0154] Continue to refer to Figure 5 In some examples, the surface of the support sheet 106 facing the quantum dot film 111 is a second surface P2, and the color of the second surface P2 includes yellow so that blue light irradiated onto the second surface P2 is reflected and appears as white light.

[0155] For example, the support sheet 106 can be entirely yellow, or the support sheet 106 can have only its second surface P2 being yellow. The second surface P2 can be a plane, or it can be a curved surface or an irregular surface.

[0156] The color range of the second surface P2 on the Pantone color chart can be 100U-110U. Alternatively, the color of the second surface P2 can also correspond to other color numbers, and the embodiments of this application do not further limit this.

[0157] When blue light emitted from the quantum dot film 111 shines on the second surface P2, it can be reflected by the second surface P2. The second surface P2 is yellow, so it can reflect yellow light. In this way, the blue light shining on the second surface P2 can be reflected as white light, thereby reducing the risk of blue light leakage at the edges of the backlight module 100 and improving the display performance of the display panel 200.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A backlight module, characterized in that, include: The housing, including the back plate; A light source is disposed on one side of the back plate along the thickness direction of the back plate, and the light source is used to emit blue light; A light guide plate is disposed on the same side of the back plate along the thickness direction of the back plate and the light source, and the light guide plate and the light source are disposed adjacent to each other along a first direction; A light processing layer assembly includes a quantum dot film, a diffuser sheet, and a first reflective sheet. The quantum dot film is stacked on the side of the light guide plate away from the back plate and is used to emit red and green light under blue light illumination. The diffuser sheet is stacked on the side of the quantum dot film away from the light guide plate and is used to atomize the light. The first reflective sheet is stacked between the light guide plate and the back plate and is used to reflect light to the quantum dot film. The stacking direction is perpendicular to the first direction. A first fluorescent ink layer is disposed on the edge region of at least one film layer in the light treatment layer group on the side surface away from the back plate, and the first fluorescent ink layer can emit yellow light under blue light irradiation; as well as, A frame surrounds at least a portion of the light guide plate along its circumference and is connected to the housing; the surface of the frame facing the quantum dot film is a first surface, the color of which includes yellow, so that blue light irradiated onto the first surface is reflected and appears as white light.

2. The backlight module of claim 1, wherein, The first fluorescent ink layer is disposed on the first reflective sheet.

3. The backlight module of claim 2, wherein, Along the first direction, the first reflective sheet includes a first reflective area and a second reflective area, wherein the first reflective area is closer to the edge of the first reflective sheet relative to the second reflective area; The first fluorescent ink layer includes a first coating portion and a plurality of first ink dots. The first coating portion is uniformly coated on the first reflective area, and the plurality of first ink dots are disposed in the second reflective area.

4. The backlight module of claim 3, wherein, Along the first direction, the second reflective area includes a first area, a second area, and a third area, wherein the first area, the second area, and the third area are sequentially located away from the edge of the first reflective sheet; The density of the plurality of first ink dots in the first region is greater than the density of the plurality of first ink dots in the second region; the density of the plurality of first ink dots in the second region is greater than the density of the plurality of first ink dots in the third region.

5. The backlight module of claim 2, wherein, Along the second direction, the first reflective sheet includes a third reflective area and a fourth reflective area, wherein the third reflective area is closer to the edge of the first reflective sheet relative to the fourth reflective area; The first fluorescent ink layer includes a second coating portion and a second ink dot. The second coating portion is uniformly coated in the third reflective area, and a plurality of the second ink dots are disposed in the fourth reflective area. The second direction is perpendicular to the first direction.

6. The backlight module of claim 1, wherein, Also includes: The second reflective sheet has one end located on the side of the light source away from the back plate, and the other end located between the light guide plate and the quantum dot film. A second fluorescent ink layer is disposed on the surface of the second reflector near the light source, and at least a portion of the second fluorescent ink layer is disposed opposite to the light source; the second fluorescent ink layer can emit yellow light under blue light irradiation.

7. The backlight module of claim 6, wherein, The second fluorescent ink layer includes a third coating portion, which is uniformly coated on the surface of the second reflective sheet near the light source, and at least a portion of the third coating portion is disposed opposite to the light source.

8. The backlight module of claim 1, wherein, It also includes a support sheet, which is disposed between the light guide plate and the first reflective sheet; The surface of the support sheet facing the quantum dot film is a second surface, and the color of the second surface includes yellow, so that blue light irradiated onto the second surface is reflected to appear as white light.

9. The backlight module according to any one of claims 1-8, wherein, It also includes a composite prism, which is stacked between the diffuser and the quantum dot film.

10. A display panel, characterized by, include: The backlight module as described in any one of claims 1 to 9; A liquid crystal layer is stacked on the side of the backlight module's diffuser sheet away from the quantum dot film of the backlight module.

11. An electronic device, comprising: include: shell; The display panel as claimed in claim 10, wherein the display panel and the housing are connected.

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