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WO2023039955A1 - 显示面板及电子装置 - Google Patents

显示面板及电子装置 Download PDF

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Publication number
WO2023039955A1
WO2023039955A1 PCT/CN2021/121847 CN2021121847W WO2023039955A1 WO 2023039955 A1 WO2023039955 A1 WO 2023039955A1 CN 2021121847 W CN2021121847 W CN 2021121847W WO 2023039955 A1 WO2023039955 A1 WO 2023039955A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical film
display panel
film group
frame
fixing block
Prior art date
Application number
PCT/CN2021/121847
Other languages
English (en)
French (fr)
Inventor
周政
宋岁忙
Original Assignee
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US17/613,186 priority Critical patent/US12130515B2/en
Publication of WO2023039955A1 publication Critical patent/WO2023039955A1/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements

Definitions

  • the present invention relates to the field of display technology, in particular to a display panel and an electronic device.
  • Embodiments of the present application provide a display panel and an electronic device, which are used to solve the problem that the optical film cannot be fixed normally in the existing display panel using a direct-lit backlight module.
  • An embodiment of the present application provides a display panel, including a backlight module, and the backlight module includes:
  • optical film group is arranged on the frame
  • a fixed block one end of the fixed block is connected to the frame, and the other end of the fixed block is pressed on the optical film group.
  • the framework includes:
  • the optical film group is arranged on the inner frame
  • the outer frame includes a first support part, the first support part is arranged in alignment with the periphery of the optical film group, and the one end of the fixed block is fixedly connected to the first support part close to One side of the optical film group.
  • a groove is provided on a side of the first supporting portion close to the optical film set, and the one end of the fixing block is fixedly connected to the bottom of the groove.
  • the fixing block is disposed in alignment with a middle area of the first support portion in the length direction.
  • the fixing block includes a first fixing block and a second fixing block, and the first fixing block and the second fixing block are arranged symmetrically with respect to the center line of symmetry of the first supporting part.
  • the inner frame includes a first stepped surface, and the optical film group is disposed on the first stepped surface;
  • a positioning post is provided on the first step surface, a positioning hole is provided in the optical film group, and the positioning post passes through the positioning hole
  • the positioning column is arranged in alignment with a middle area of the first supporting part in the length direction.
  • the backlight module further includes a diffusion plate
  • the inner frame includes a second stepped surface
  • the second stepped surface is disposed on a side of the first stepped surface away from the optical film group.
  • the diffusion plate is arranged on the second stepped surface.
  • the fixing block is arranged in alignment with the diffuser plate.
  • the backlight module further includes a lamp panel, and the frame further includes a bottom backboard;
  • the lamp board is arranged on the bottom backboard
  • the inner frame is arranged on the periphery of the lamp board and fixedly connected to the inner peripheral side of the bottom backboard
  • the outer frame is fixedly connected to the Describe the outer peripheral side of the bottom backplane.
  • the embodiment of the present application also provides an electronic device, including a display panel, the display panel includes a backlight module, and the backlight module includes:
  • optical film group is arranged on the frame
  • a fixed block one end of the fixed block is connected to the frame, and the other end of the fixed block is pressed on the optical film group.
  • the framework includes:
  • the optical film group is arranged on the inner frame
  • the outer frame includes a first support part, the first support part is arranged in alignment with the periphery of the optical film group, and the one end of the fixed block is fixedly connected to the first support part close to One side of the optical film group.
  • a groove is provided on a side of the first supporting portion close to the optical film set, and the one end of the fixing block is fixedly connected to the bottom of the groove.
  • the fixing block is disposed in alignment with a middle area of the first support portion in the length direction.
  • the fixing block includes a first fixing block and a second fixing block, and the first fixing block and the second fixing block are arranged symmetrically with respect to the center line of symmetry of the first supporting part.
  • the inner frame includes a first stepped surface, and the optical film group is disposed on the first stepped surface;
  • a positioning post is provided on the first step surface, a positioning hole is provided in the optical film group, and the positioning post passes through the positioning hole
  • the positioning column is arranged in alignment with a middle area of the first supporting part in the length direction.
  • the embodiments of the present application provide a display panel and an electronic device, the electronic device includes the display panel, the display panel includes a backlight module, and the backlight module includes a frame, an optical film A sheet group and a fixed block, one end of the fixed block is connected to the frame, and the other end of the fixed block is pressed on the optical film group, by pressing the fixed block on the optical film group, it can
  • the movement of the optical diaphragm group in the thickness direction of the display panel is limited, so as to fix the optical diaphragm and avoid abnormal noise, displacement and Scratching problem.
  • FIG. 1 is an exploded schematic diagram of a display panel provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a backlight module provided in an embodiment of the present application.
  • Figure 3 is a schematic diagram of the assembly of the frame and the optical film set provided by the embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of an outer frame provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of the expansion of the optical film set provided by the embodiment of the present application.
  • the embodiment of the present application provides a display panel and an electronic device.
  • the electronic device includes the display panel 1000 and a casing.
  • the display panel 1000 is fixedly installed on the casing. It is used to place the main board, printed circuit board, battery and other electronic components required to drive the display panel.
  • the electronic device may be a vehicle-mounted display terminal, such as a vehicle-mounted display, a driving recorder, etc.
  • the electronic device may also be a mobile terminal, such as a smart phone, a tablet computer, a notebook computer, etc., or a wearable Type terminals, such as smart watches, smart bracelets, smart glasses, augmented reality equipment, etc.
  • the electronic device can also be a fixed terminal, such as a desktop computer, TV, etc., or a vehicle display terminal, such as a vehicle display or a driving recorder wait.
  • FIG. 1 is an exploded schematic diagram of a display panel provided by an embodiment of the present application.
  • the display panel 1000 includes a display panel main body 100 and a backlight module 200 .
  • the display panel main body 100 is disposed on the backlight module 200 .
  • the display panel 1000 is a liquid crystal display panel
  • the display panel main body 100 includes a color filter substrate and an array substrate disposed opposite to each other, and a liquid crystal layer arranged between the color filter substrate and the array substrate (in the figure not shown), the backlight in the backlight module 200 is a direct-lit backlight.
  • FIG. 2 is a schematic structural diagram of the backlight module provided by the embodiment of the present application
  • FIG. 3 is a schematic diagram of the assembly of the frame and the optical film set provided by the embodiment of the present application.
  • the backlight module 200 It includes a frame 20 , an optical film set 30 and a fixing block 40 , and the optical film set 30 is arranged on the frame 20 .
  • the optical film set 30 includes a lower brightness enhancement film 31 and an upper brightness enhancement film 32 stacked on the frame 20 in sequence.
  • the optical films included in the optical film set 30 are not limited to the lower brightness enhancement film 31 and the upper brightness enhancement film 32 in the above embodiments, but may also include but not limited to privacy protection films, diffusion films and the like.
  • the frame 20 is provided with a positioning column 50, and the optical film group 30 is provided with a positioning hole, and the positioning hole runs through each optical film in the optical film group 30 in the thickness direction of the display panel 1000, such as the lower part in the embodiment of the present application.
  • the positioning post 50 on the frame 20 passes through the positioning hole of the optical film set 30, and is limited by the positioning post 50.
  • the optical film set 30 is on the plane where the optical film set 30 is located (that is, the x direction and The plane defined by the y direction) cannot move, so that the optical film group 30 can be prevented from moving left and right during the vibration process.
  • One end of the fixed block 40 is connected to the frame 20, and the other end of the fixed block 40 is pressed on the optical film group 30, limited by the pressure applied by the fixed block 40 to the optical film group 30 opposite to the third direction z, the optical The diaphragm group 30 cannot move in the thickness direction of the display panel 1000 (that is, the z direction shown in the figure), so as to prevent the optical diaphragm group 30 from moving up and down during the vibration process, thereby passing through the positioning post 50 and the positioning hole.
  • Position fit and the pressing effect of the fixing block 40 fix the optical film group 30, avoiding problems such as abnormal noise, scratches and displacement of the optical film group 30 in the vibration test, and improving the reliability of the display panel 1000 .
  • the frame 20 includes an inner frame 21 , the inner frame 21 includes a first stepped surface 211 , the positioning column 50 is disposed on the first stepped surface 211 , and the optical film group 30 is disposed on the first stepped surface 211 .
  • the inner frame 21 is an annular plastic frame, and the inner frame is formed by connecting end to end of four straight inner frames.
  • the middle part of the inner frame 21 is a hollow area, which can pass through the light emitted by the lamp board in the backlight module 200.
  • the inner frame 21 is made of opaque material, so that the light emitted by the lamp board can be prevented from passing through the inner frame. 21 exposed.
  • the positioning column 50 and the inner frame 21 are integrally formed.
  • the positioning post 50 can also be fixedly connected to the first stepped surface 211 of the inner frame 21 by means of gluing, snapping, screwing or welding.
  • the first stepped surface 211 is an annular stepped surface, and the first stepped surface 211 is arranged in alignment with the periphery of the optical film set 30.
  • the first stepped surface 211 can apply a supporting force in the third direction z to the optical film set 30. To support the optical film group 30 .
  • the plastic frame 20 also includes an outer frame 22 , and the outer frame 22 is arranged on the inner frame 21 .
  • the outer frame 22 includes a first support portion 221 , and the first support portion 221 is parallel to the plane where the optical film set 30 is located.
  • the outer frame 22 is a ring-shaped plastic frame, and the outer frame 22 is formed by connecting four straight frames end to end.
  • the middle part of the outer frame 22 is a hollow area, and the hollow area can also pass through the lamp panel.
  • the outer frame 22 is made of opaque material, so as to prevent the light emitted by the lamp panel from being exposed from the outer frame 22 .
  • the first support portion 221 is arranged in alignment with the periphery of the optical film set 30. It can be understood that the first support portion 221 is in a ring structure, and the orthographic projection of the first support portion 221 in the third direction z is consistent with the optical film set. Orthographic projections of the peripheral edges of 30 in the third direction z partially overlap.
  • One end of the fixed block 40 is fixedly connected to the side of the first support part 221 close to the optical film group 30, so that the first support part 221 can be used to press the fixed block 40, so that the fixed block 40 is applied to the periphery of the optical film group 30.
  • the force opposite to the third direction z prevents the optical film set 30 from moving in the third direction z.
  • the fixing block 40 is a single-sided foam glue, and the end of the fixing block 40 close to the first support part 221 is viscous, and is glued to the end of the first support part 221 close to the optical film group 30.
  • the side is fixedly connected, and the side of the fixed block 40 close to the optical film set 30 is a smooth surface without stickiness, and directly contacts with the uppermost light-enhancing sheet 32 in the optical film set 30, which can reduce the contact between the fixed block 40 and the optical film.
  • the friction force between the sheet groups 30 avoids scratches on the surface of the optical film group 30 .
  • the first supporting portion 221 of the outer frame 22 can be used to exert pressure on the single-sided foam glue, so that the single-sided foam glue is in a state of compression deformation, and the single-sided foam glue can also be applied to the optical diaphragm group. 30 exerts a pressure opposite to the third direction z.
  • the non-adhesive end of the single-sided foam adhesive is in contact with the optical film set 30 , so that the optical film set 30 under the fixed block 40 can move relative to the fixed block 40 on the plane where the optical film set 30 is located.
  • the optical film group between the positioning post 50 and the fixed block 40 is heated and expands, the optical film group between the positioning post 50 and the fixed block 40 and the optical film group 30 below the fixed block 40 can face away from the positioning post.
  • the expansion in the direction of 50 avoids the problem that the optical film group 30 between the fixing block 40 and the positioning post 50 expands due to heat and causes wrinkles in the optical film group 30 .
  • the fixing block 40 is not limited to single-sided foam rubber, and can also be replaced by elastically deformable materials such as rubber. In this way, the elastic deformation of the fixing block 40 can be used to give a certain pressure to the optical diaphragm group 30 .
  • One end of the fixing block 40 can be glued to the side of the first supporting portion 221 close to the optical film set 30 .
  • the fixing block 40 may also be fixedly connected to the first supporting portion 221 by means of snap-fitting and/or threading.
  • a groove 223 is formed on a side of the first supporting portion 221 close to the optical film set 30 , and one end of the fixing block 40 is fixedly connected to the bottom of the groove 223 .
  • the fixing block 40 can be fixedly connected to the bottom of the groove 223 by gluing.
  • the groove 223 can be used as a positioning mark for the fixing block 40 .
  • the shape of the orthographic projection of the groove 223 on the third direction z is a rectangle, the long side of the rectangle is parallel to the second direction y, the length of the long side is 10 mm, and the short side of the rectangle is parallel to the first direction y.
  • the direction x is parallel, and the width of the short side is 2 mm.
  • the shape of the orthographic projection of the fixed block 40 on the third direction z is also a rectangle, the long side of the rectangle is parallel to the second direction y, the length of the long side is 9.8 mm, the short side of the rectangle is parallel to the first direction x, and the short side
  • the width is 1.8 mm.
  • the size of the groove 223 is larger than the size of the fixing block 40.
  • a certain deformation space is reserved to prevent the fixing block 40 from compressing and deforming. Squeezing the first support portion causes deformation of the first support portion 221 .
  • the length of the long side of the groove 223 is not limited to 10 mm, and can also be 11 mm, 13 mm or 15 mm, etc., it only needs to be between 10 mm and 15 mm, and the length of the groove 223 is short.
  • the width of the side is not limited to 2 millimeters, but also can be 2.3 millimeters, 2.5 millimeters, 2.7 millimeters or 3 millimeters, etc., and only needs to be between 2 millimeters and 3 millimeters.
  • the size is 0.2mm smaller on one side.
  • the depth of the groove 223 in the third direction z is 0.4 mm, and when the fixing block 40 is in the initial state (that is, the non-compressive deformation state), the thickness in the third direction z is 1 mm.
  • the distance between a supporting part 221 and the optical film group 30 is 0.3 mm, and the interference of the fixed block 40 in the third direction z is 0.3 mm, so that it can be ensured that the fixed block 40 is in compression after the outer frame 22 is assembled.
  • the deformation state, and the pressure exerted by the fixing block 40 on the optical film set 30 can limit the movement of the optical film set 30 in the third direction z.
  • the depth of the groove 223 is not limited to the above-mentioned 0.4 mm, and can also be 0.3 mm or 0.5 mm, etc.
  • the thickness of the fixing block 40 is not limited to the above-mentioned 1 mm, and can also be 0.8 mm, 0.9 mm, or 1.1 mm.
  • the distance between the first supporting portion 221 and the optical film group 30 is not limited to the above-mentioned 0.3 mm, and can also be 0.2 mm or 0.4 mm, etc., the depth of the groove 223, the thickness of the fixing block 40 and The distance between the first support portion 221 and the optical film set 30 needs to satisfy the interference of the fixing block 40 in the third direction z between 0.3 mm and 0.5 mm.
  • FIG. 4 is a schematic structural diagram of the outer frame provided by the embodiment of the present application.
  • the outer frame 22 includes a first outer frame 224, a second outer frame 225, a third outer frame 226 and a fourth outer frame 227, the first outer frame 224, the second outer frame 225, the third outer frame 226 and the fourth outer frame 227 are linear frames, the first outer frame 224 and the second outer frame 225, the third outer frame 226 and the second outer frame
  • the four outer frames 227 are sequentially connected end to end to enclose the outer frame 22 .
  • the first outer frame 224 is integrally formed with the second outer frame 225 , the third outer frame 226 and the fourth outer frame 227 , and each includes a first support portion 221 , and the fixing block 40 is arranged on the first outer frame 225 .
  • the positioning column 50 is arranged in alignment with the first support portion 221 of the first outer frame 224 in the middle area B of the length direction, and the length direction of the first support portion 221 parallel to the first direction x.
  • the fixing block 40 and the positioning column 50 are not limited to be arranged in alignment with the middle area B of the first outer frame 224, but also can be aligned with the middle area B of the second outer frame 225, the third outer frame 226 and the fourth outer frame 227 at the same time.
  • FIG. 5 is a schematic diagram of the expansion of the optical film set provided by the embodiment of the present application.
  • Both the fixing block 40 and the positioning column 50 are connected to the middle area B of the first support part 221 of the first outer frame 224 Arranged in alignment, the fixing block 40 and the positioning post 50 form a fixing point A, and the fixing point A is located in the middle of one side edge of the optical film group 30 . Since there is only one fixed point A shown in the figure for the optical film set 30 , the optical film set 30 in other areas is not subject to pressure restrictions on the plane where the optical film set 30 is located and the third direction z.
  • the optical film group 30 When the optical film group 30 is heated and expands, the optical film group 30 will expand and deform the fixed point A as the center, and spread to both sides and the opposite side of the fixed point A in the direction of the arrow in the figure, so that the optical film The group 30 as a whole can still be kept flat, avoiding the problem of wrinkles of the optical film group 30 due to concentrated thermal expansion.
  • the fixed block 40 includes a first fixed block 41 and a second fixed block 42, and the first fixed block 41 and the second fixed block 42 are arranged symmetrically with respect to the center line of symmetry of the first support portion 221 of the first outer frame 224, and Located on the opposite side of the alignment post 50 .
  • the center line of symmetry of the first supporting portion 221 is parallel to the second direction y, and the positioning column 50 is disposed on the center line of symmetry.
  • the groove 223 may include a first groove 223a and a second groove 223b, and the first groove 223a and the second groove 223b are both arranged on the first support portion 221 of the first outer frame 224 close to the edge of the optical film set 30 One side, and also on the opposite side of the positioning post 50.
  • One end of the first fixing block 41 is pasted on the bottom of the first groove 223a, and one end of the second fixing block 42 is pasted on the bottom of the second groove 223b.
  • the first fixing block 41 and the second fixing block 42 can be used to simultaneously fix and limit the optical film group 30 on both sides of the symmetric center line of the first support part 221, avoiding the single position on the symmetry center line. Insufficient interference of the side fixing block 40 leads to loosening of the optical film set 30 .
  • the display panel further includes a flexible circuit board 300 , the display panel main body 100 is disposed on the first support portion 221 , and the display panel main body 100 is away from the first support portion 221 through the annular double-sided foam glue.
  • One side of the optical film group 30 is bonded, and the flexible circuit board 300 is connected to the display panel main body 100 .
  • the outer frame 22 includes a second support portion 222 disposed on the outer periphery of the first support portion 221 , and the second support portion 222 protrudes beyond the first support portion 221 in the third direction z.
  • the second support portion 222 is provided with an escape slot 228 , and the escape slot 228 is disposed in a middle area of the second support portion 222 of the first outer frame 224 .
  • the flexible circuit board 300 is bent to the back of the backlight module 200 through the escape groove 228 through the outer frame 22 .
  • the width of the frame on the side where the flexible circuit board is disposed is wider than that of the other side frames.
  • the escape groove 228 for installing the flexible circuit board 300 in the middle area of the second support portion 222 of the first outer frame 224 the original frame on the side where the flexible circuit board 300 is provided in the display panel 1000 can be utilized.
  • the positioning column 50 and the fixing block 40 are provided with a width and a space, so that the width of other borders of the display panel 1000 will not be increased.
  • the backlight module 200 also includes a diffusion plate 60
  • the inner frame 21 includes a second stepped surface 212
  • the second stepped surface 212 is disposed on the side of the first stepped surface 211 away from the optical film group 30
  • the diffusion plate 60 is disposed on the second step surface.
  • the side surface of the diffuser plate 60 close to the optical film set 30 is flush with the surface of the first stepped surface 211, so that the diffuser plate 60 can be used to support the part of the optical film set 30 that is not supported by the first stepped surface 211, thereby ensuring optical The flatness of the diaphragm group 30 as a whole.
  • the fixed block 40 and the diffuser plate 60 are arranged in alignment.
  • the fixed block 40 exerts pressure on the optical film group 30, it can also apply a pressure opposite to the third direction like the diffuser plate 60. In this way, the fixed block 40 can be used to exert pressure on the diffuser plate.
  • 60 plays a role of fixing and prevents the diffusion plate 60 from moving during vibration.
  • the backlight source of the backlight module 200 is a direct light source, so it is necessary to use the diffusion plate 60 to evenly diffuse the light source of the backlight source.
  • the diffuser plate 60 is different from the existing light guide plate in that the light guide plate is made by injection molding, so it is possible to directly form a boss or a step for fixing the optical film group 30 on the light-emitting surface of the light guide plate when the light guide plate is formed.
  • the diffuser plate 60 is formed by cutting and cannot be made by injection molding process, so that no bosses or steps can be formed on the diffuser plate 60 .
  • the optical structure of the existing direct-type backlight module is not changed. At the same time, it can play a role in fixing the optical film group 30 .
  • the backlight module 200 includes a lamp panel 70
  • the frame 20 also includes a bottom backplane 23
  • the lamp panel 70 is arranged on the bottom backplane 23
  • the inner frame 21 is arranged on the periphery of the lamp panel 70
  • the outer frame 22 is fixedly connected to the inner peripheral side of the bottom backplane 23
  • the outer frame 22 is fixedly connected to the outer peripheral side of the bottom backplane 23 .
  • There is a gap between the second stepped surface 212 and the lamp panel 70 and the gap is a light mixing area, which facilitates the light emitted by the lamp panel 70 to diffuse to the diffuser plate 60 more uniformly.
  • the lamp board 70 is a mini LED lamp board, including a circuit board and a plurality of mini LED lamps disposed on the circuit board in an array. LED.
  • the light board 70 is not limited to the mini LED light board in the above embodiments, and the light board 70 can also be an LED light board or a micro LED light board.
  • the bottom and back plate 23 includes a flat bottom plate 231 and a back plate 232 bent along the third direction z from the periphery of the bottom plate 231 , and the bottom plate 231 and the back plate 232 are integrally formed.
  • the lamp panel 70 is arranged on the base plate 231, and the inner frame 21 is arranged on the peripheral edge of the lamp panel 70 and is close to the back plate 232.
  • the outer frame 22 also includes a third support portion 229 bent in a direction opposite to the third direction z, the outer frame 22 is fixedly connected to the bottom back plate 23 through a snap-fit structure, and the third support portion 229 is arranged on the outer periphery of the back plate 232 On the side, the second supporting portion 222 and the first supporting portion 221 are disposed on the upper edge of the back plate 232 .
  • the backlight module 200 further includes an annular double-sided foam glue 90 , and the display panel main body 100 is attached to the outer frame 22 of the backlight module 200 through the double-sided foam glue 90 .
  • the embodiments of the present application provide a display panel and an electronic device
  • the electronic device includes the display panel
  • the display panel includes a backlight module
  • the backlight module includes a frame, an optical film set, and A fixed block, one end of the fixed block is connected to the frame, and the other end of the fixed block is pressed on the optical film group.
  • the optical By pressing the fixed block on the optical film group, the optical The movement of the diaphragm group in the thickness direction of the display panel plays a role in fixing the optical diaphragm and avoids abnormal noise, displacement and scratching of the optical diaphragm group in the display panel using the direct mini LED light source question.

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Abstract

一种显示面板（1000）及电子装置，该电子装置包括显示面板（1000），显示面板（1000）包括背光模组（200），背光模组（200）包括框架（20）、光学膜片组（30）和固定块（40），通过将固定块（40）压覆在光学膜片组（30）上，可以限制光学膜片组（30）在显示面板（1000）的厚度方向上的移动，从而起到对光学膜片的固定作用，避免采用直下式光源的显示面板（1000）中的光学膜片发生异响、移位以及刮伤的问题。

Description

显示面板及电子装置 技术领域
本发明涉及显示技术领域，尤其涉及一种显示面板及电子装置。
 背景技术
随着显示技术的发展，车载液晶显示面板的应用场景也来越多，对于其性能的要求也越来越高。由于分区控制（local dimming）功能具有超高对比度以及低功耗等优势逐渐被车厂提出需求，目前车载较前沿的技术是采用直下式迷你发光二极管（mini light emitting diode, mini LED）背光源来实现分区控制功能。
 技术问题
由于车载显示的可靠性要求相对比较严苛，背光模组中的光学膜片在不固定的情况下会在振动试验中产生异响、刮伤、移位等问题，影响产品的显示效果。常规侧入式背光源采用在导光板上设计凸台固定光学膜片，然而对于直下式背光源的背光模组，因为光学结构的变化，采用的是扩散板而并非导光板，因而无法在扩散板上设计凸台对光学膜片进行固定，导致光学膜片容易发生移位、刮伤的问题。
综上所述，现有采用直下式背光模组的显示面板存在光学膜片无法正常固定的问题。故，有必要提供一种显示面板及电子装置来改善这一缺陷。
 技术解决方案
本申请实施例提供一种显示面板及电子装置，用于解决现有采用直下式背光模组的显示面板存在光学膜片无法正常固定的问题。
本申请实施例提供一种显示面板，包括背光模组，所述背光模组包括：
框架；
光学膜片组，所述光学膜片组设置于所述框架上；以及
固定块，所述固定块的一端连接于所述框架，所述固定块的另一端压覆于所述光学膜片组上。
根据本申请一实施例，所述框架包括：
内框，所述光学膜片组设置于所述内框上；以及
外框，所述外框包括第一支撑部，所述第一支撑部与所述光学膜片组的周缘对位设置，所述固定块的所述一端固定连接于所述第一支撑部靠近所述光学膜片组的一侧。
根据本申请一实施例，第一支撑部靠近所述光学膜片组的一侧设有凹槽，所述固定块的所述一端固定连接于所述凹槽的底部。
根据本申请一实施例，所述固定块的周缘与所述凹槽的壁面之间具有间隙。
根据本申请一实施例，所述固定块设置于所述第一支撑部在长度方向上的中间区域对位设置。
根据本申请一实施例，所述固定块包括第一固定块和第二固定块，所述第一固定块和所述第二固定块关于所述第一支撑部的对称中心线对称设置。
根据本申请一实施例，所述内框包括第一台阶面，所述光学膜片组设置于所述第一台阶面上；
其中，所述第一台阶面上设有定位柱，所述光学膜片组设有定位孔，所述定位柱穿过所述定位孔
根据本申请一实施例，所述定位柱与所述第一支撑部在长度方向上的中间区域对位设置。
根据本申请一实施例，所述背光模组还包括扩散板，所述内框包括第二台阶面，所述第二台阶面设置于所述第一台阶面背离所述光学膜片组的一侧，所述扩散板设置于所述第二台阶面上。
根据本申请一实施例，所述固定块与所述扩散板对位设置。
根据本申请一实施例，所述背光模组还包括灯板，所述框架还包括底背板；
其中，所述灯板设置于所述底背板上，所述内框设置于所述灯板的周缘上并固定连接于所述底背板的内周侧，所述外框固定连接于所述底背板的外周侧。
根据本申请一实施例，所述光学膜片组的周缘与所述底背板的内壁面之间具有间隙。
本申请实施例还提供一种电子装置，包括显示面板，所述显示面板包括背光模组，所述背光模组包括：
框架；
光学膜片组，所述光学膜片组设置于所述框架上；以及
固定块，所述固定块的一端连接于所述框架，所述固定块的另一端压覆于所述光学膜片组上。
根据本申请一实施例，所述框架包括：
内框，所述光学膜片组设置于所述内框上；以及
外框，所述外框包括第一支撑部，所述第一支撑部与所述光学膜片组的周缘对位设置，所述固定块的所述一端固定连接于所述第一支撑部靠近所述光学膜片组的一侧。
根据本申请一实施例，第一支撑部靠近所述光学膜片组的一侧设有凹槽，所述固定块的所述一端固定连接于所述凹槽的底部。
根据本申请一实施例，所述固定块的周缘与所述凹槽的壁面之间具有间隙。
根据本申请一实施例，所述固定块设置于所述第一支撑部在长度方向上的中间区域对位设置。
根据本申请一实施例，所述固定块包括第一固定块和第二固定块，所述第一固定块和所述第二固定块关于所述第一支撑部的对称中心线对称设置。
根据本申请一实施例，所述内框包括第一台阶面，所述光学膜片组设置于所述第一台阶面上；
其中，所述第一台阶面上设有定位柱，所述光学膜片组设有定位孔，所述定位柱穿过所述定位孔
根据本申请一实施例，所述定位柱与所述第一支撑部在长度方向上的中间区域对位设置。
 有益效果
本揭示实施例的有益效果：本申请实施例提供一种显示面板及电子装置，所述电子装置包括所述显示面板，所述显示面板包括背光模组，所述背光模组包括框架、光学膜片组和固定块，所述固定块的一端连接于所述框架，所述固定块的另一端压覆于所述光学膜片组上，通过将固定块压覆在光学膜片组上，可以限制在光学膜片组在显示面板的厚度方向上的移动，从而起到对光学膜片的固定作用，避免采用直下式mini LED光源的显示面板中的光学膜片组发生异响、移位以及刮伤的问题。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是揭示的一些实施例，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为本申请实施例提供的显示面板的分解示意图；
图2为本申请实施例提供的背光模组的结构示意图；
图3为本申请实施例提供的框架与光学膜片组的装配示意图；
图4为本申请实施例提供的外框的结构示意图；
图5为本申请实施例提供的光学膜片组的膨胀示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本揭示可用以实施的特定实施例。本揭示所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本揭示，而非用以限制本揭示。在图中，结构相似的单元是用以相同标号表示。
下面结合附图和具体实施例对本揭示做进一步的说明：
本申请实施例提供一种显示面板及电子装置，所述电子装置包括所述显示面板1000和壳体，显示面板1000固定安装于壳体上，壳体内可以设置有容置空间，容置空间可以用于放置主板、印刷电路板、电池等用于驱动所述显示面板所需的电子元件。
在本申请实施例中，所述电子装置可以车载显示终端，例如车载显示器、行车记录仪等，所述电子装置也可以是移动终端，例如智能手机、平板电脑、笔记本电脑等，或者是可穿戴式终端，例如智能手表、智能手环、智能眼镜、增强现实设备等，所述电子装置还可以是固定终端，如台式电脑、电视等，也可以是车载显示终端，如车载显示器或行车记录仪等。
如图1所示，图1为本申请实施例提供的显示面板的分解示意图，所述显示面板1000包括显示面板主体100和背光模组200，显示面板主体100设置于背光模组200上。
在本申请实施例中，所述显示面板1000为液晶显示面板，所述显示面板主体100括相对设置的彩膜基板和阵列基板以及设置于彩膜基板和阵列基板之间的液晶层（图中未示出），背光模组200中的背光源为直下式背光源。
结合图1至图3所示，图2为本申请实施例提供的背光模组的结构示意图，图3为本申请实施例提供的框架与光学膜片组的装配示意图，所述背光模组200包括框架20、光学膜片组30和固定块40，光学膜片组30设置于框架20上。
在本申请实施例中，光学膜片组30包括依次层叠设置于框架20上的下增光片31和上增光片32。在实际应用中，光学膜片组30包含的光学膜片不仅限于上述实施例中的下增光片31和上增光片32，也可以包括但不限于防窥膜片、扩散片等。
框架20上设有定位柱50，光学膜片组30设有定位孔，定位孔在显示面板1000的厚度方向上贯穿光学膜片组30中的各个光学膜片，例如本申请实施例中的下增光片31和上增光片32。框架20上的定位柱50穿过光学膜片组30的定位孔，受限于定位柱50的限制，光学膜片组30在所述光学膜片组30所在的平面（即图中x方向和y方向所限定的平面）上无法进行移动，从而可以避免光学膜片组30在振动过程中发生左右移动。
固定块40的一端连接于框架20，固定块40的另一端压覆于光学膜片组30上，受限于固定块40向光学膜片组30施加的与第三方向z相反的压力，光学膜片组30在显示面板1000的厚度方向（即图示的z方向）上无法进行移动，以此避免光学膜片组30在振动过程中发生上下移动，从而通过定位柱50和定位孔的限位配合以及固定块40的压覆作用，对光学膜片组30进行固定，避免光学膜片组30在振动试验中产生异响、刮伤以及移位等问题，提高了显示面板1000的可靠性。
进一步的，框架20包括内框21，内框21包括第一台阶面211，定位柱50设置于第一台阶面211上，光学膜片组30设置于第一台阶面211上。
如图2所示，内框21为环形胶框，内框由4个直线型的内边框首尾连接围合形成。内框21的中间部分为镂空区域，该镂空区域可以透过背光模组200中的灯板发出的光线，内框21采用不透光材料制成，如此可以避免灯板发出的光线从内框21外露。在本申请实施例中，定位柱50和内框21一体成型。在实际应用中，定位柱50也可以通过胶粘、卡合、螺纹连接或焊接等方式固定连接于内框21的第一台阶面211上。
第一台阶面211为环形的台阶面，第一台阶面211与光学膜片组30的周缘对位设置，第一台阶面211可以向光学膜片组30施加第三方向z的支撑力，用于支撑光学膜片组30。
进一步的，胶框20还包括外框22，外框22设置于内框21上。如图2所示，外框22包括第一支撑部221，第一支撑部221平行于光学膜片组30所在的平面。
在本申请实施例中，外框22为环形胶框，外框22由4个直线型的边框首尾连接围合形成，外框22的中间部分为镂空区域，该镂空区域同样可以透过灯板发出的光线，外框22采用不透光材料制成，以此避免灯板发出的光线从外框22外露。
第一支撑部221与光学膜片组30的周缘对位设置，可以理解的是，第一支撑部221呈环形结构，第一支持部221在第三方向z上的正投影与光学膜片组30的四周边缘在第三方向z上的正投影部分重叠。固定块40的一端固定连接于第一支撑部221靠近光学膜片组30的一侧，如此可以利用第一支撑部221压覆固定块40，使得固定块40向光学膜片组30的周缘施加与第三方向z反向的力，避免光学膜片组30在第三方向z上发生移动。
在本申请实施例中，固定块40为单面泡棉胶，固定块40靠近第一支撑部221的一端具有粘性，通过胶粘的方式与第一支撑部221靠近光学膜片组30的一侧固定连接，固定块40靠近光学膜片组30的一侧为光滑表面，不具有粘性，直接与光学膜片组30中最上方的上增光片32接触，可以减小固定块40与光学膜片组30之间的摩擦力，避免对光学膜片组30表面造成划伤。在装配外框22时，可以利用外框22的第一支撑部221对单面泡棉胶施加压力，使单面泡棉胶处于压缩变形状态，单面泡棉胶同时可以向光学膜片组30施加与第三方向z相反的压力。
同时，采用单面泡面胶不具有粘性的一端与光学膜片组30接触，使得固定块40下方的光学膜片组30可以相对于固定块40在光学膜片组30所在的平面上移动。当定位柱50与固定块40之间的光学膜片组受热发生膨胀时，定位柱50与固定块40之间的光学膜片组以及固定块40下方的光学膜片组30可以朝向远离定位柱50的方向膨胀，避免固定块40与定位柱50之间的光学膜片组30由于受热发生膨胀导致光学膜片组30产生皱褶的问题。
在实际应用中，固定块40不仅限于单面泡棉胶，也可以采用橡胶等具有弹性变形能力的材料替代，如此可以利用固定块40的弹性形变量，给予光学膜片组30一定的压力。固定块40的一端可以通过胶粘的方式与第一支撑部221靠近光学膜片组30的一侧贴合。在实际应用中，固定块40也可以通过卡扣卡和或者螺纹连接的方式与第一支撑部221固定连接。
进一步的，第一支撑部221靠近光学膜片组30的一侧设有凹槽223，固定块40的一端固定连接于凹槽223的底部。固定块40可以通过胶粘的方式与凹槽223的底部固定连接。凹槽223可以作为固定块40的定位标记，在装配背光模组200时，便于固定块40的装配，避免固定块40安装的位置偏移影响光学膜片组30的固定效果。
进一步的，固定块40的周缘与凹槽223的壁面之间具有间隙。
在本申请实施例中，凹槽223在第三方向z上的正投影的形状为矩形，矩形的长边与第二方向y平行，长边的长度为10毫米，矩形的短边与第一方向x平行，短边的宽度为2毫米。固定块40在第三方向z上的正投影的形状也为矩形，矩形的长边与第二方向y平行，长边的长度为9.8毫米，矩形的短边与第一方向x平行，短边的宽度为1.8毫米。如此可以保证凹槽223的尺寸大于固定块40的尺寸，基于固定块40一定的装配间隙，便于固定块40装配至凹槽223内，同时预留一定的形变空间，避免固定块40压缩变形后挤压第一支撑部导致第一支撑部221发生变形。
在实际应用中，凹槽223的长边的长度不仅限于10毫米，也可以为11毫米、13毫米或者15毫米等，只需要介于10毫米至15毫米之间即可，凹槽223的短边的宽度不仅限于2毫米，也可以为2.3毫米、2.5毫米、2.7毫米或3毫米等，只需要介于2毫米至3毫米之间即可，固定块40的尺寸则需要满足比凹槽223的尺寸单边小0.2毫米。
在本申请实施例中，凹槽223在第三方向z上的深度为0.4毫米，固定块40处于初始状态（即非压缩变形状态）时，在第三方向z上的厚度为1毫米，第一支撑部221与光学膜片组30之间的距离为0.3毫米，固定块40在第三方向z上的过盈量为0.3毫米，如此可以保证在装配外框22后，固定块40处于压缩变形状态，且固定块40向光学膜片组30施加的压力能够限定光学膜片组30在第三方向z上的移动。
在实际应用中，凹槽223的深度不仅限于上述的0.4毫米，也可以为0.3毫米或0.5毫米等，固定块40的厚度也不仅限于上述的1毫米，也可以为0.8毫米、0.9毫米、1.1毫米或1.2毫米等，第一支撑部221与光学膜片组30之间的距离不仅限于上述的0.3毫米，也可以为0.2毫米或0.4毫米等，凹槽223的深度、固定块40的厚度以及第一支撑部221与光学膜片组30之间的距离需要满足固定块40在第三方向z上的过盈量介于0.3毫米至0.5毫米之间。
进一步的，如图4所示，图4为本申请实施例提供的外框的结构示意图，外框22包括第一外边框224、第二外边框225、第三外边框226和第四外边框227，第一外边框224、第二外边框225、第三外边框226和第四外边框227均为直线型边框，第一外边框224与第二外边框225、第三外边框226和第四外边框227依次首尾连接围合成外框22。
在本申请实施例中，第一外边框224与第二外边框225、第三外边框226和第四外边框227一体成型，且均包括第一支撑部221，固定块40设置于第一外边框224的第一支撑部221在长度方向上的中间区域，定位柱50与第一外边框224的第一支撑部221在长度方向的中间区域B对位设置，第一支撑部221的长度方向平行于第一方向x。在实际应用中，固定块40以及定位柱50不仅限于与第一外边框224的中间区域B对位设置，也可以同时与第二外边框225、第三外边框226和第四外边框227中的任意一个的中间区域对位设置。
结合图2至图5所示，图5为本申请实施例提供的光学膜片组的膨胀示意图，固定块40和定位柱50均与第一外边框224的第一支撑部221的中间区域B对位设置，固定块40和定位柱50构成一个固定点A，该固定点A位于光学膜片组30的一侧边缘中间。由于光学膜片组30仅存在图示的一个固定点A，其他区域的光学膜片组30在光学膜片组30所在的平面以及第三方向z上均没有收到压力限制。当光学膜片组30受热发生膨胀时，光学膜片组30将膨胀变形量以该固定点A为中心，按图示箭头的方向向固定点A的两侧以及对侧扩散，使得光学膜片组30整体仍能够保持平整，避免光学膜片组30由于受热膨胀集中导致产生皱褶的问题。
进一步的，固定块40包括第一固定块41和第二固定块42，第一固定块41和第二固定块42关于第一外边框224的第一支撑部221的对称中心线对称设置，且位于定位柱50的相对侧。第一支撑部221的对称中心线平行于第二方向y，定位柱50设置于该对称中心线上。
凹槽223则可以包括第一凹槽223a和第二凹槽223b，第一凹槽223a和第二凹槽223b均设置于第一外边框224的第一支撑部221靠近光学膜片组30的一侧，并且同样位于定位柱50的相对侧。第一固定块41的一端粘贴在第一凹槽223a的底部，第二固定块42的一端粘贴在第二凹槽223b的底部。如此，可以利用第一固定块41和第二固定块42对第一支撑部221的对称中心线两侧的光学膜片组30同时起到固定限位的作用，避免设置在该对称中心线单侧固定块40过盈量不足导致光学膜片组30松动的情况发生。
进一步的，如图2所示，显示面板还包括柔性电路板300，显示面板主体100设置在第一支撑部221上，显示面板主体100通过环形的双面泡棉胶与第一支撑部221背离光学膜片组30的一侧粘接，柔性电路板300与显示面板主体100连接。
外框22包括第二支撑部222，第二支撑部222设置于第一支撑部221的外周缘上，第二支撑部222在第三方向z上凸出于第一支撑部221。第二支撑部222上设有避位槽228，避位槽228设置于第一外边框224的第二支撑部222的中间区域。柔性电路板300通过避位槽228经由外框22的外部弯折至背光模组200的背部。
可以理解的是，显示面板1000中设置有柔性电路板一侧的边框宽度较其他侧边框的宽度更宽。通过将用于设置柔性电路板300的避位槽228设置在第一外边框224的第二支撑部222的中间区域，可以利用显示面板1000中设置有柔性电路板300一侧的原有边框的宽度以及空间来设置定位柱50和固定块40，如此不会增加显示面板1000其他边框的宽度。
进一步的，如图2所示，背光模组200还包括扩散板60，内框21包括第二台阶面212，第二台阶面212设置于第一台阶面211背离光学膜片组30的一侧，扩散板60设置于第二台阶面上。
扩散板60靠近光学膜片组30的一侧表面与第一台阶面211的表面齐平，这样可以利用扩散板60支撑光学膜片组30未被第一台阶面211支撑的部分，从而保证光学膜片组30整体的平整性。
固定块40与扩散板60对位设置，固定块40在向光学膜片组30施加压力的同时，也可以像扩散板60施加与第三方向相反的压力，如此可以利用固定块40对扩散板60起到固定的作用，防止扩散板60在振动过程中发生移动。
在本申请实施例中，背光模组200的背光源为直下式光源，故需要采用扩散板60将背光源的光源均匀扩散。扩散板60和现有导光板的工艺不同，导光板通过注塑成形制成，故可以直接在制备形成导光板时在导光板的出光面上形成用于固定光学膜片组30的凸台或台阶。但扩散板60是通过裁切制备形成，不能通过注塑工艺制成，因而不能在扩散板60形成凸台或台阶。通过在内框21的第一台阶面211上形成定位柱50，并搭配第一支撑部211靠近光学膜片组30一侧的固定块40，在不改变现有直下式背光模组的光学结构的同时，可以起到对光学膜片组30的固定作用。
进一步的，如图2所示，背光模组200包括灯板70，框架20还包括底背板23，灯板70设置于底背板23上，内框21设置于灯板70的周缘上并固定连接于底背板23的内周侧，外框22固定连接于底背板23的外周侧。第二台阶面212与灯板70之间具有间隙，该间隙为混光区域，便于灯板70发出的光线更加均匀的扩散至扩散板60。
具体的，在本申请实施例中，灯板70为mini LED灯板，包括电路板和设置于电路板上呈阵列分布的多个mini LED。在实际应用中，灯板70不仅限于上述实施例中的mini LED灯板，灯板70也可以为LED灯板或micro LED灯板等。
底背板23包括平铺设置的底板231和由底板231的周缘沿第三方向z弯折的背板232，底板231和背板232一体成型。灯板70设置于底板231上，内框21设置于灯板70的四周边缘上并靠近背板232，内框21可以通过卡合机构与底板231或背板232固定连接，内框21的四个边角还设有橡胶块80，橡胶块80可以用于缓震，避免内框21在振动过程中发生晃动，同时可以保护灯板70，避免灯板70受外力挤压导致灯板70受到损坏。外框22还包括沿与第三方向z相反的方向弯折的第三支撑部229，外框22通过卡合结构与底背板23固定连接，第三支撑部229设置于背板232的外周侧，第二支撑部222和第一支撑部221设置于背板232的上周缘。
背光模组200还包括环形的双面泡棉胶90，显示面板主体100通过双面泡棉胶90与背光模组200的外框22贴合。
进一步的，光学膜片组30与底背板23的内壁面之间具有间隙。
如图2所示，光学膜片组30的四周边缘与背板232的内壁面之间具有间隙，该间隙可以提供用于光学膜片组30膨胀的空间，避免光学膜片组30由于膨胀无法释放导致产生皱褶引起光学不良的情况。
综上所述，本申请实施例提供一种显示面板及电子装置，所述电子装置包括所述显示面板，所述显示面板包括背光模组，所述背光模组包括框架、光学膜片组和固定块，所述固定块的一端连接于所述框架，所述固定块的另一端压覆于所述光学膜片组上，通过将固定块压覆在光学膜片组上，可以限制在光学膜片组在显示面板的厚度方向上的移动，从而起到对光学膜片的固定作用，避免采用直下式mini LED光源的显示面板中的光学膜片组发生异响、移位以及刮伤的问题。
综上所述，虽然本申请以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为基准。

Claims (20)

  1. 一种显示面板，包括背光模组，所述背光模组包括：
    框架；
    光学膜片组，所述光学膜片组设置于所述框架上；以及
    固定块，所述固定块的一端连接于所述框架，所述固定块的另一端压覆于所述光学膜片组上。
  2. 如权利要求1所述的显示面板，其中，所述框架包括：
    内框，所述光学膜片组设置于所述内框上；以及
    外框，所述外框包括第一支撑部，所述第一支撑部与所述光学膜片组的周缘对位设置，所述固定块的所述一端固定连接于所述第一支撑部靠近所述光学膜片组的一侧。
  3. 如权利要求2所述的显示面板，其中，第一支撑部靠近所述光学膜片组的一侧设有凹槽，所述固定块的所述一端固定连接于所述凹槽的底部。
  4. 如权利要求3所述的显示面板，其中，所述固定块的周缘与所述凹槽的壁面之间具有间隙。
  5. 如权利要求2所述的显示面板，其中，所述固定块设置于所述第一支撑部在长度方向上的中间区域。
  6. 如权利要求5所述的显示面板，其中，所述固定块包括第一固定块和第二固定块，所述第一固定块和所述第二固定块关于所述第一支撑部的对称中心线对称设置。
  7. 如权利要求2所述的显示面板，其中，所述内框包括第一台阶面，所述光学膜片组设置于所述第一台阶面上；
    其中，所述第一台阶面上设有定位柱，所述光学膜片组设有定位孔，所述定位柱穿过所述定位孔。
  8. 如权利要求7所述的显示面板，其中，所述定位柱与所述第一支撑部在长度方向上的中间区域对位设置。
  9. 如权利要求7所述的显示面板，其中，所述背光模组还包括扩散板，所述内框包括第二台阶面，所述第二台阶面设置于所述第一台阶面背离所述光学膜片组的一侧，所述扩散板设置于所述第二台阶面上。
  10. 如权利要求9所述的显示面板，其中，所述固定块与所述扩散板对位设置。
  11. 如权利要求2所述的显示面板，其中，所述背光模组还包括灯板，所述框架还包括底背板；
    其中，所述灯板设置于所述底背板上，所述内框设置于所述灯板的周缘上并固定连接于所述底背板的内周侧，所述外框固定连接于所述底背板的外周侧。
  12. 如权利要求11所述的显示面板，其中，所述光学膜片组的周缘与所述底背板的内壁面之间具有间隙。
  13. 一种电子装置，包括显示面板，所述显示面板包括背光模组，所述背光模组包括：
    框架；
    光学膜片组，所述光学膜片组设置于所述框架上；以及
    固定块，所述固定块的一端连接于所述框架，所述固定块的另一端压覆于所述光学膜片组上。
  14. 如权利要求13所述的电子装置，其中，所述框架包括：
    内框，所述光学膜片组设置于所述内框上；以及
    外框，所述外框包括第一支撑部，所述第一支撑部与所述光学膜片组的周缘对位设置，所述固定块的所述一端固定连接于所述第一支撑部靠近所述光学膜片组的一侧。
  15. 如权利要求14所述的电子装置，其中，第一支撑部靠近所述光学膜片组的一侧设有凹槽，所述固定块的所述一端固定连接于所述凹槽的底部。
  16. 如权利要求15所述的显示面板，其中，所述固定块的周缘与所述凹槽的壁面之间具有间隙。
  17. 如权利要求14所述的电子装置，其中，所述固定块设置于所述第一支撑部在长度方向上的中间区域。
  18. 如权利要求17所述的电子装置，其中，所述固定块包括第一固定块和第二固定块，所述第一固定块和所述第二固定块关于所述第一支撑部的对称中心线对称设置。
  19. 如权利要求14所述的电子装置，其中，所述内框包括第一台阶面，所述光学膜片组设置于所述第一台阶面上；
    其中，所述第一台阶面上设有定位柱，所述光学膜片组设有定位孔，所述定位柱穿过所述定位孔。
  20. 如权利要求19所述的电子装置，其中，所述定位柱与所述第一支撑部在长度方向上的中间区域对位设置。
PCT/CN2021/121847 2021-09-14 2021-09-29 显示面板及电子装置 WO2023039955A1 (zh)

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