WO2018166311A1 - 背光模组、显示装置和显示装置的制造方法 - Google Patents

背光模组、显示装置和显示装置的制造方法 Download PDF

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Publication number
WO2018166311A1
WO2018166311A1 PCT/CN2018/075629 CN2018075629W WO2018166311A1 WO 2018166311 A1 WO2018166311 A1 WO 2018166311A1 CN 2018075629 W CN2018075629 W CN 2018075629W WO 2018166311 A1 WO2018166311 A1 WO 2018166311A1
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WO
WIPO (PCT)
Prior art keywords
tape
buffer
display panel
carrying platform
cushioning
Prior art date
Application number
PCT/CN2018/075629
Other languages
English (en)
French (fr)
Inventor
徐兵
肖立川
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/074,514 priority Critical patent/US11209696B2/en
Publication of WO2018166311A1 publication Critical patent/WO2018166311A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F1/133308—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
    • 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
    • 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
    • G02F1/133325—Assembling processes
    • 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
    • G02F2201/50—Protective arrangements
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

Definitions

  • the present application relates to the field of display technologies, and in particular, to a backlight module, a display device, and a method of manufacturing the display device.
  • Liquid crystal display (English: Liquid Crystal Display; referred to as: LCD) is widely used in various fields such as mobile display, consumer communication or electronic products because of its good picture quality, thinness and low power consumption.
  • a liquid crystal display includes a liquid crystal display panel and a backlight module.
  • the liquid crystal display panel and the backlight module are oppositely arranged.
  • the backlight module is used to provide a light source to an effective display area of the liquid crystal display panel.
  • the liquid crystal display panel comprises a thin film transistor (English: Thin Film Transistor; abbreviated as: TFT) substrate, and the TFT substrate is disposed on a carrying frame of the plastic frame of the backlight module, the carrying platform is located in a peripheral area of the backlight module, and the TFT substrate and the plastic frame A buffer tape is disposed between the carrying platforms, and the buffering tape is used for unevenness of the carrying platform (for example, the loading platform itself is deformed, or when the plastic frame of the backlight module is engaged with the backing plate, the bearing table is warped and deformed. When it is used, it buffers the TFT substrate.
  • TFT Thin Film Transistor
  • the thickness of the buffer tape is relatively uniform and the thickness is small, when the flatness of the carrier of the plastic frame is poor, the liquid crystal display panel is stressed on the buffer tape, resulting in uneven brightness of the liquid crystal display, resulting in a black state image (ie, The display effect of the L0 screen is poor.
  • Embodiments of the present application provide a backlight module, a display device, and a method of manufacturing the display device.
  • the technical solution is as follows:
  • a backlight module in a first aspect, includes: a positioning frame and a buffer tape.
  • a display panel is disposed on the carrying platform of the positioning frame, and a distance from the mesa of the inner area of the carrying platform to the display panel is greater than a distance between the mesa of the edge area of the carrying platform and the display panel.
  • the buffer tape is disposed on the carrying platform, one side of the cushioning tape located in the inner area is in contact with the display panel, and the other side is in contact with the surface of the carrying platform, the buffer tape and the carrying platform
  • the side of the countertop is provided with a backing.
  • the positioning frame is a plastic frame.
  • the frame of the plastic frame is stepped, and the thickness of the first portion of the inner region of the carrier is smaller than the thickness of the second portion of the edge region of the carrier.
  • the positioning frame is a middle iron frame.
  • the carrying frame of the middle iron frame is in the shape of a fold line, and the thickness of the first portion of the inner region of the carrying platform is equal to the thickness of the second portion of the edge region of the carrying platform.
  • a side of the cushioning tape on the inner area that is attached to the surface of the platform is provided with a backing.
  • At least one of the display panel and the mesa of the edge region of the carrier has a gap between the buffer tape located in the edge region.
  • the buffer tape comprises a first sub-buffer tape and a second sub-buffer tape.
  • the thickness of the first sub-buffer tape is greater than the thickness of the second sub-buffer tape, the first sub-buffer tape is adhered to the first portion, and at least one of the second portion and the display panel is There is a gap between the second sub-buffer tapes.
  • the cushioning tape is an integral mouth-shaped structure or is surrounded by four tape strips.
  • the cushioning tape is made of an elastic material.
  • the cushioning tape is a foam tape.
  • a display device comprising a backlight module
  • the display module includes: a positioning frame and a buffer tape.
  • a display panel is disposed on the carrying platform of the positioning frame, and a distance from the mesa of the inner region of the carrying platform to the display panel is greater than a distance between the mesa of the edge region of the carrying platform and the display panel.
  • the buffer tape is disposed on the carrying platform, one side of the cushioning tape located in the inner area is in contact with the display panel, and the other side is in contact with the surface of the carrying platform, the buffer tape and the carrying platform
  • the side of the countertop is provided with a backing.
  • the positioning frame is a plastic frame.
  • the frame of the plastic frame is stepped, and the thickness of the first portion of the inner region of the carrier is smaller than the thickness of the second portion of the edge region of the carrier.
  • the positioning frame is a middle iron frame.
  • the carrying frame of the middle iron frame is in the shape of a fold line, and the thickness of the first portion of the inner region of the carrying platform is equal to the thickness of the second portion of the edge region of the carrying platform.
  • a side of the cushioning tape on the inner area that is attached to the surface of the platform is provided with a backing.
  • At least one of the display panel and the mesa of the edge region of the carrier has a gap between the buffer tape located in the edge region.
  • the buffer tape comprises a first sub-buffer tape and a second sub-buffer tape.
  • the thickness of the first sub-buffer tape is greater than the thickness of the second sub-buffer tape, the first sub-buffer tape is adhered to the first portion, and at least one of the second portion and the display panel is There is a gap between the second sub-buffer tapes.
  • the cushioning tape is an integral mouth-shaped structure or is surrounded by four tape strips.
  • the cushioning tape is made of an elastic material.
  • the cushioning tape is a foam tape.
  • a method of fabricating a display device comprising:
  • the display panel is disposed on the backlight module such that the display panel is in contact with the other side of the buffer tape located in the inner region, and the backlight module is a backlight module described on one hand.
  • FIG. 1A is a schematic structural view of a liquid crystal display in the related art
  • FIG. 1B is a schematic view showing the stress of the liquid crystal display panel on the buffer tape in the related art
  • 1C is a schematic view showing a stress of a liquid crystal display panel on a buffer tape in the related art
  • FIG. 1D is a schematic structural view of another liquid crystal display in the related art.
  • FIG. 2A is a schematic structural diagram of a display device including a backlight module according to an embodiment of the present application
  • 2B is a schematic structural view showing the use of a plastic frame carrier and a buffer tape according to an embodiment of the present application
  • 2C is a schematic view of a buffer tape when the carrier itself is deformed according to an embodiment of the present application
  • 2D is a schematic view of a buffer tape when a bearing table is warped and deformed according to an embodiment of the present application
  • 3A is a schematic structural diagram of another display device including a backlight module according to an embodiment of the present application.
  • FIG. 3B is a schematic view showing the use of a carrier of a medium iron frame and a buffer tape according to an embodiment of the present application
  • FIG. 4A is a schematic structural view of a cushioning tape provided with a backing provided by an embodiment of the present application
  • FIG. 4B is a schematic structural view of a cushioning tape provided by an embodiment of the present application.
  • 4C is a schematic structural view of still another cushioning tape provided by an embodiment of the present application.
  • 4D is a schematic structural view of another cushioning tape provided by an embodiment of the present application.
  • 4E is a schematic structural view of still another buffer tape provided by an embodiment of the present application.
  • 5A is a top view of a cushioning tape provided by an embodiment of the present application.
  • FIG. 5B is a top view of another cushioning tape provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of a method of manufacturing a display device according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a carrier provided with a buffer tape according to an embodiment of the present application.
  • the liquid crystal display includes a liquid crystal display panel 001 and a backlight module 002.
  • the liquid crystal display panel 001 and the backlight module 002 are oppositely disposed.
  • the liquid crystal display panel 001 includes a TFT substrate 01, a color filter substrate 0011, an upper polarizer 0012, and a lower polarizer 0013.
  • the backlight module 002 includes a plastic frame 0021, an optical film 0022, a light guide plate 0023, and a back plate 0024.
  • the optical film material includes a diffusion film and a prism film.
  • the TFT substrate 01 of the liquid crystal display panel 001 is disposed on the carrier 02 of the plastic frame 0021 of the backlight module 002, and a buffer tape 03 is disposed between the TFT substrate 01 and the carrier 02 of the plastic frame.
  • the buffer rubber 03 is used for the unevenness of the carrying platform 02 (for example, when the carrying platform itself is deformed, or when the plastic frame of the backlight module is engaged with the backing plate to cause warpage deformation of the carrying platform), the TFT substrate 01 is played. Buffering effect.
  • the thickness of the cushioning tape 03 is relatively uniform and the thickness is small, the buffering amount of the cushioning tape 03 is small, and the cushioning performance is poor, and the liquid crystal display panel 001 is easily affected by the flatness of the carrying frame 02 of the plastic frame, so when the plastic frame is used When the flatness of the carrying platform 02 is poor, the liquid crystal display panel 001 is stressed on the buffer tape 03, resulting in uneven brightness of the liquid crystal display, resulting in poor display of the black state picture.
  • FIG. 1B shows a schematic view of the liquid crystal display panel being stressed on the cushioning tape 03 when the carrier 02 itself in FIG. 1A is deformed.
  • the cushioning tape 03 is also deformed, and the thickness of the cushioning tape 03 is relatively uniform and the thickness is small. Therefore, when the deformation amount of the loading platform is larger than the compression amount of the cushioning tape, the loading platform passes the cushioning tape. Uneven stress is transmitted to the liquid crystal display panel, and the liquid crystal display panel is stressed at the buffer area, resulting in uneven brightness of the liquid crystal display, resulting in poor display of the black state picture.
  • Other reference numerals in Fig. 1B can be explained with reference to Fig. 1A.
  • FIG. 1C shows a schematic view of the liquid crystal display panel being stressed on the cushioning tape 03 when the carrier 02 of FIG. 1A is warped.
  • the cushioning tape 03 also undergoes warping deformation, and the thickness of the cushioning tape 03 is relatively uniform and the thickness is small. Therefore, when the deformation amount of the loading table is larger than the compression amount of the cushioning tape, the carrying platform is also Uneven stress is transmitted to the liquid crystal display panel through the buffer tape, and the liquid crystal display panel is stressed at the buffer area, resulting in poor display of the black state picture.
  • the falling phenomenon may occur, and the pulling force is generated on the liquid crystal display panel, which also reduces the display effect of the black state picture.
  • a medium iron frame (the iron frame in the middle of the liquid crystal display) 04 may be used instead of the plastic frame 0021 in FIG. 1A.
  • Other reference numerals in Fig. 1D can be explained with reference to Fig. 1A.
  • the embodiment of the present application provides a backlight module 100.
  • the backlight module 100 includes a positioning frame 110 and a buffer tape 120.
  • the display panel 001 of the positioning frame 110 is provided with a display panel 001.
  • the distance d1 between the mesa of the internal area A of the loading stage 111 and the display panel 001 is greater than the distance d2 of the surface of the edge area B of the loading stage 111 to the display panel 001.
  • the cushioning tape 120 is placed on the stage 111, and one side of the cushioning tape located in the inner area A is in contact with the display panel 001, and the other side is in contact with the table top of the stage 111.
  • the side of the cushioning tape 120 that is bonded to the table top of the stage 111 is provided with a backing (not shown in Fig. 2A).
  • the adhesive acts as a stable cushioning tape.
  • the buffer tape is matched with the positioning frame, and the two are used for the peripheral area of the backlight module, wherein the positioning frame functions as positioning and support.
  • the buffer tape located in the inner area is One side is in contact with the display panel, and the other side is attached to the surface of the carrying table, and the thickness of the buffer tape located in the inner area is large, so when the flatness of the carrying platform is poor, the display panel can be prevented from being stressed on the buffer tape, thereby The brightness of the display is more uniform, and the display effect of the black state picture is improved.
  • the edge area B of the carrying platform there are four types of buffer tapes located in the edge area B of the carrying platform, and the surface of the display panel and the edge area of the carrying platform.
  • the first type is: one side of the buffer tape located in the edge area B and the display The panel contacts, and the other surface has a gap with the surface of the carrying platform;
  • the second type is: one side of the buffer tape located in the edge area B has a gap with the display panel, and the other side is matched with the surface of the carrying platform;
  • the third type is: at the edge One side of the buffer tape of the area B has a gap with the display panel, and the other side has a gap with the surface of the stage;
  • the fourth type is that one side of the buffer tape located in the edge area B is in contact with the display panel, and the other side is attached to the surface of the stage Hehe.
  • the side of the cushioning tape located in the inner region A of the carrying platform and the surface of the carrying platform need to be provided with a backing;
  • the side of the cushioning tape located in the inner area A and the surface of the mounting table may be provided with a backing or may be provided. No adhesive is set.
  • the carrier itself since there is a gap between at least one of the mesa of the display panel and the edge region of the carrier and the buffer tape located at the edge region, when the carrier itself is deformed, if it is located at the carrier The cushioning tape of the edge region B of the table is deformed, and the cushioning tape after deformation is filled in the gap.
  • the cushioning tape located in the edge region B is buffered. The function is to prevent the carrier from transmitting uneven stress to the display panel through the buffer tape.
  • the shape variable of the stage is buffered by the inner area A.
  • the tape is offset.
  • the buffer tape located in the inner area A of the stage has a large thickness, a large buffer amount, and a good buffering performance, so that it can function as a main buffer (ie, plays a main buffering role).
  • the buffer tape located in the edge region B of the stage is small in thickness, so that it can function as an auxiliary buffer.
  • the display panel is first buffered on the buffer tape located in the inner area and then buffered on the cushioning tape located in the edge area.
  • the cushioning tape located in the edge region functions as an auxiliary buffer, so that the unevenness of the load transmitted to the display panel by the cushioning tape is prevented.
  • the structure of the buffer tape may be various.
  • FIG. 2A exemplarily shows a schematic view of a buffer tape to which the first contact mode of the above four contact modes is applied, that is, one side of the cushioning tape located at the edge portion B of the stage is in contact with the display panel 001, and the other side A schematic view of the cushioning tape in the case where there is a gap with the land of the stage 111.
  • a side where the cushioning tape located in the inner region A of the stage is bonded to the table top of the stage is provided with a backing.
  • the side of the buffer tape located on the edge area B of the carrying table may be provided with a backing on the side in contact with the display panel, and the side of the cushioning tape located in the inner area A of the carrying platform may be provided with a backing.
  • the display panel 001 further includes a color filter substrate 0011, an upper polarizer 0012, and a lower polarizer 0013.
  • the color filter substrate 0011 is disposed opposite to the TFT substrate 01, and a liquid crystal layer is disposed between the color filter substrate 0011 and the TFT substrate 01.
  • the upper polarizer 0012 is disposed on a side of the color filter substrate 0011 away from the TFT substrate 01, and the lower polarizer 0013 is disposed at The TFT substrate 01 is away from the side of the color filter substrate 0011.
  • the backlight module 100 further includes a back plate 0024.
  • the back plate 0024 is provided with a light guide plate 0023.
  • the light guide plate is used to guide the light beam emitted from the light source uniformly away from the back plate.
  • An optical film material 0022 is disposed on the light guide plate 0023, and the optical film material is used to change the direction of the light emitted from the light guide plate to enhance the light intensity of the emitted light.
  • the optical film material can include an upper diffusion film, a prism film, and a lower diffusion film.
  • the positioning frame 110 can be a plastic frame, and the loading frame 111 of the plastic frame is stepped.
  • the thickness h1 of the first portion 1110 of the inner region of the stage 111 is less than the thickness h2 of the second portion 1120 of the edge region of the stage 111.
  • the thickness of the first portion of the carrying platform is smaller than the thickness of the second portion of the carrying platform, and the thickness of the cushioning tape located in the inner region of the carrying platform is relatively large, and the cushioning tape of the inner region has a large buffering amount and good cushioning performance.
  • the thickness of the first portion of the carrier is less than the thickness of the second portion of the carrier and the deformation of the carrier can be reduced.
  • FIG. 2C exemplarily shows a schematic view of a buffer tape applying a third contact mode among the above four contact modes, that is, a gap between one side of the cushion tape located at the edge portion B of the stage and the display panel 001, and the other side A schematic view of the cushioning tape in the case where there is a gap with the land of the stage 111.
  • the side of the buffer tape located in the inner area A of the stage is bonded to the surface of the stage of the stage to be provided with a backing.
  • a side of the buffer tape located in the inner area A of the stage is placed in contact with the display panel to provide a backing.
  • the thickness of the buffer tape located in the inner area A of the carrying platform is relatively large, and the cushioning tape of the inner area has a good cushioning performance and can function as a main buffer; the thickness of the cushioning tape located in the edge area B is larger. Small, can play the role of auxiliary buffer, the buffer tape of the edge area can carry external stress, and its bearing strength is large. Since one side of the buffer tape located in the edge area B has a gap with the display panel, and the other side has a gap with the surface of the stage, when the edge area B of the stage 111 is deformed, the buffer tape located in the edge area B is deformed and deformed. The rear cushioning tape is filled in the gap, as indicated by the broken line in Fig. 2C.
  • the cushioning tape located in the edge region B When the shape variable of the cushioning tape located in the edge region B is too large, the cushioning tape located in the edge region B is compressed to serve as an auxiliary buffer. Therefore, the risk of the deformation of the edge region B of the carrying platform on the display panel is reduced, and the unevenness of the load on the display panel by the buffer tape is avoided, the uniformity of the brightness of the display is improved, and the display of the black state image is improved. effect.
  • the thickness of the buffer tape located in the inner region A is larger than that of the related art, and the amount of buffer is greatly enhanced, and the shape variable of the carrier is affected by the interior.
  • the buffer tape of the area is offset, which prevents the carrier from transmitting stress to the display panel through the buffer tape.
  • FIG. 2D exemplarily shows a schematic view of a buffer tape applying the second contact mode of the above four contact modes, that is, a gap between one side of the cushioning tape located at the edge portion B of the stage and the display panel 001, and the other side A schematic view of the cushioning tape in the case of fitting to the table top of the stage 111.
  • the side of the buffer tape located in the inner area A of the stage is attached to the surface of the stage of the stage, and/or the side of the cushion tape located in the edge area B of the stage is attached to the surface of the stage of the stage.
  • Set the adhesive In order to further stabilize the cushioning tape, a side of the buffer tape located in the inner area A of the stage may be provided with a backing.
  • the display panel 001 is first buffered by the buffer tape located in the inner area A of the stage, and then buffered by the buffer tape located in the edge area B, and is located inside.
  • the thickness of the cushioning tape of the area A is large, so the amount of cushioning is greatly enhanced, and the stress on the display panel is prevented from being transmitted to the display panel by the cushioning tape.
  • the cushioning tape can be made of an elastic material.
  • the cushioning tape located in the inner region A of the carrier does not leverage the cushioning tape located in the edge region B of the carrier, that is, the deformation of the cushioning tape located in the inner region A does not affect the cushioning tape located in the edge region B.
  • one side of the cushioning tape located in the edge area B may be in contact with the display panel 001, and the other side may be in contact with the table top of the stage 111.
  • the positioning frame 110 may be a middle iron frame, and the loading frame 111 of the middle iron frame is in a fold line shape.
  • the labels in Fig. 3A can be explained with reference to Fig. 2A.
  • the thickness g1 of the first portion 1130 of the inner region A of the stage 111 may be equal to the thickness g2 of the second portion 1140 of the edge region B of the stage 111.
  • the first portion sinks and the thickness of the cushioning tape located in the inner region of the carrying platform is large, so the cushioning of the inner region is buffered. Large amount and good buffering performance.
  • the thickness of the first portion of the inner region of the stage may not be equal to the thickness of the second portion of the edge region of the carrier due to manufacturing errors. In the embodiment of the present application, only the distance from the mesa of the inner area of the stage to the display panel is greater than the distance from the table top of the edge area of the stage to the display panel.
  • Fig. 4A exemplarily shows a structural schematic view of the cushioning tape of Fig. 2A.
  • a side of the buffer tape located in the inner area A of the stage may be provided with a backing 130 on the side in contact with the display panel, and a side of the buffer tape located in the edge area B of the stage may be disposed on the side contacting the display panel.
  • Adhesive 130 The adhesive allows the cushioning tape to adhere more strongly to the display panel.
  • the cushioning tape 120 may be made of a material that is not easily slag-removed, such as silica gel or high temperature resistant foam.
  • Fig. 4B exemplarily shows a structural schematic view of the cushioning tape of Fig. 2C.
  • One side of the cushioning tape located in the inner area A of the stage is in contact with the display panel (001 in Fig. 2C), and the other side is fitted to the surface of the stage (111 in Fig. 2C), and is buffered in the edge area B of the stage.
  • the thickness of the cushioning tape located in the inner region A is greater than the thickness of the cushioning tape located in the edge region B.
  • the cushioning tape located in the inner region A may be composed of two parts, and a backing may be disposed between the two portions to enhance the adhesion of the cushioning tape.
  • the cushioning tape 120 may include a first sub-buffer tape 121 and a second sub-buffer tape 122.
  • the thickness n1 of the first sub-buffer tape 121 is greater than the thickness n2 of the second sub-buffer tape 122, and the first sub-buffer tape 121 is adhered to the first portion of the inner region of the carrier (1110 in FIG. 2B), and the edge of the carrier is There is a gap between the second portion of the region (1120 in FIG. 2B) and the display panel and the second sub-buffer tape 122, and there may be a gap between the second portion and the second sub-buffer tape 122.
  • Fig. 4C exemplarily shows a structural view of the cushioning tape of Fig. 2A, that is, there is a gap between the second portion and the second sub-buffer tape 122, and the display panel is in contact with the second sub-buffer tape 122.
  • the thickness of the first sub-buffer tape is greater than the thickness of the second sub-buffer tape
  • the buffer amount of the first sub-buffer tape is greater than the buffer amount of the second sub-buffer tape.
  • the first sub-buffer tape functions as a main buffer
  • the second sub-buffer tape functions as an auxiliary buffer.
  • the embodiment of the present application retains the shading ability of the first sub-buffer tape and increases the cushioning performance of the first sub-buffer tape.
  • FIG. 4D exemplarily shows a schematic structural view of the cushioning tape of FIG. 2A
  • the cushioning tape 120 may also include a third sub-buffering tape 123 and a fourth sub-buffering tape 124.
  • the third sub-buffer tape 123 is disposed above the fourth sub-buffer tape 124, and the length x1 of the third sub-buffer tape 123 is greater than the length x2 of the fourth buffer tape 124.
  • One side of the third sub-buffer tape 123 is in contact with the display panel, and the first area on the other side (the first area is opposite to the inner area of the stage) is attached to one side of the fourth sub-buffer tape 124, and the fourth sub-buffer tape 124 is The other side is attached to the table top of the carrying platform. Further, in order to enhance the adhesion of the cushioning tape, a backing may be disposed between the third sub-buffering tape 123 and the fourth sub-buffering tape 124.
  • the third sub-buffer tape 123 may be made of a material having good cushioning properties such as foam
  • the fourth sub-buffer tape 124 may be made of a material that is not easily slag-removed such as silica gel or foam.
  • the cushioning tape in FIG. 4B may also be as shown in FIG. 4E, and the cushioning tape located in the inner region A of the carrying platform may be composed of three parts superposed on each other, and a backing glue may be disposed between adjacent portions.
  • One side of the cushioning tape located at the edge portion B of the stage has a gap with the display panel, and the other side has a gap with the table of the stage.
  • the cushioning tape 120 in the embodiment of the present application may be an integral mouth-shaped structure.
  • the setting operation can be completed at one time.
  • the cushioning tape 120 in the embodiment of the present application may also be surrounded by four tape strips.
  • each of the tape strips can be separately disposed on the carrying platform.
  • FIG. 5A and FIG. 5B show top views of the cushioning tape.
  • 1A to 4E are side views of the cushioning tape.
  • the backlight module provided by the embodiment of the present application is suitable for a product or a component having a display function, such as a vehicle display, a monitor, a television, a notebook, an industrial display device, a medical display device, a navigator, a mobile phone, a digital photo frame, and the like, and is particularly suitable for high A display device for brightness, such as an on-board display.
  • a display function such as a vehicle display, a monitor, a television, a notebook, an industrial display device, a medical display device, a navigator, a mobile phone, a digital photo frame, and the like
  • a display device for brightness such as an on-board display.
  • the buffer tape located in the inner area is One side is in contact with the display panel, and the other side is attached to the surface of the carrying table, and the thickness of the buffer tape located in the inner area is large, so when the flatness of the carrying platform is poor, the display panel can be prevented from being stressed on the buffer tape, thereby The brightness of the display is more uniform, and the display effect of the black state picture is improved.
  • the embodiment of the present application further provides a display device, which may include the backlight module in the above embodiment.
  • the display device may be a display product or component such as an on-board display, a monitor, a television, a notebook, an industrial display device, a medical display device, a navigator, a mobile phone, a digital photo frame, or the like.
  • the display device provided by the embodiment of the present application can be applied to many fields such as in-vehicle display, medical display, aerial display, industrial control, and smart home.
  • the embodiment of the present application further provides a manufacturing method of a display device. As shown in FIG. 6, the method includes:
  • Step 601 The buffer tape is disposed on the carrying platform of the positioning frame such that one side of the cushioning tape located in the inner area of the carrying platform is attached to the surface of the carrying platform.
  • the cushioning tape 120 is placed on the carrying table 111 of the positioning frame 110 such that one side of the cushioning tape located in the inner area A of the carrying table 111 is fitted to the surface of the carrying table 111.
  • a side of the cushioning tape located at the edge region B of the stage 111 may have a gap with the land of the stage 111.
  • the side of the buffer tape located in the inner area A of the stage 111 and the table top of the stage 111 are provided with a backing.
  • the cushioning tape cooperates with the positioning frame to be used in the peripheral area of the backlight module.
  • Step 602 The display panel is disposed on the backlight module such that the display panel is in contact with the other surface of the buffer tape located in the inner region of the carrier.
  • the backlight module in the method of manufacturing the display device is the backlight module in the above embodiment.
  • the display panel 001 is disposed on the backlight module 100 such that the display panel 001 is in contact with the other surface of the buffer tape 120 located in the inner region A of the carrier.
  • the other side of the cushioning tape located in the edge region B of the carrier can be in contact with the display panel 001.
  • the distance d1 from the mesa of the inner area A of the carrier 111 of the positioning frame 111 to the display panel 001 is greater than the distance d2 of the mesa of the edge area B of the stage 111 to the display panel 001. Since the distance from the mesa of the inner area of the carrier of the positioning frame to the display panel is greater than the distance from the table top of the edge of the stage to the display panel, one side of the buffer tape located in the inner area is in contact with the display panel, and the other side is attached to the surface of the stage.
  • the thickness of the buffer tape located in the inner region is relatively large, so when the flatness of the carrier is poor, the display panel can be prevented from being stressed on the buffer tape, thereby making the brightness of the display more uniform and improving the display effect of the black state picture.
  • the display panel 001 may include a lower polarizer 0013, a TFT substrate 01, a color filter substrate 0011, and an upper polarizer 0012.
  • the buffer tape is first disposed on the carrying platform of the positioning frame, and then the display panel is disposed on the backlight module, and the positioning module is disposed in the backlight module.
  • the distance from the mesa of the inner area of the carrying platform to the display panel is greater than the distance from the mesa of the edge area of the carrying platform to the display panel, one side of the buffer tape in the inner area is in contact with the display panel, and the other side is attached to the surface of the carrying table, and is located inside.
  • the thickness of the buffer tape in the area is large, so when the flatness of the stage is poor, the display panel can be prevented from being stressed on the buffer tape. Therefore, the brightness of the display device obtained by the method is more uniform, and the display of the black screen is performed. better result.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

一种背光模组(100)、显示装置和显示装置的制造方法，属于显示技术领域。背光模组(100)包括：定位框(110)和缓冲胶带(120)，定位框(110)的承载台(111)上设置有显示面板(001)，承载台(111)内部区域(A)的台面到显示面板(001)的距离大于承载台(111)边缘区域(B)的台面到显示面板(001)的距离，缓冲胶带(120)设置在承载台(111)上，位于内部区域(A)的缓冲胶带(120)的一面与显示面板(001)接触，另一面与承载台(111)的台面贴合，缓冲胶带(120)与承载台(111)的台面贴合的一面设置有背胶。其解决了当定位框（110）的承载台（111）的平整度较差时，显示面板（001）在缓冲胶带（120）上受到应力，造成显示器亮度不均匀，导致黑态画面的显示效果较差的问题，提高了黑态画面的显示效果。

Description

背光模组、显示装置和显示装置的制造方法
本申请要求于2017年03月14日提交中国国家知识产权局、申请号为201710151394.4、发明名称为“背光模组、显示装置和显示装置的制造方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，特别涉及一种背光模组、显示装置和显示装置的制造方法。
背景技术
液晶显示器(英文：Liquid Crystal Display；简称：LCD)因其画质好，薄型化，低功耗等优点，被广泛应用于移动显示，消费性通讯或者电子产品等各个领域。
相关技术中，液晶显示器包括液晶显示面板和背光模组。液晶显示面板和背光模组相对设置。背光模组用于给液晶显示面板的有效显示区域提供光源。液晶显示面板包括薄膜晶体管(英文：Thin Film Transistor；简称：TFT)基板，TFT基板设置在背光模组的胶框的承载台上，该承载台位于背光模组的周边区域，TFT基板与胶框的承载台之间设置有缓冲胶带，该缓冲胶带用于在承载台不平整(比如承载台本身发生形变，或者，在背光模组的胶框与背板卡合时导致承载台发生翘曲形变)时，对TFT基板起到缓冲作用。
由于缓冲胶带的厚度较均匀且厚度较小，所以当胶框的承载台的平整度较差时，液晶显示面板会在缓冲胶带上受到应力，造成液晶显示器亮度不均匀，导致黑态画面(即L0画面)的显示效果较差。
发明内容
本申请实施例提供了一种背光模组、显示装置和显示装置的制造方法。所述技术方案如下：
第一方面，提供了一种背光模组，所述背光模组包括：定位框和缓冲胶带，
所述定位框的承载台上设置有显示面板，所述承载台内部区域的台面到所 述显示面板的距离大于所述承载台边缘区域的台面到所述显示面板的距离，
所述缓冲胶带设置在所述承载台上，位于所述内部区域的缓冲胶带的一面与所述显示面板接触，另一面与所述承载台的台面贴合，所述缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
可选的，所述定位框为胶框，
所述胶框的承载台呈台阶状，所述承载台内部区域的第一部分的厚度小于所述承载台边缘区域的第二部分的厚度。
可选的，所述定位框为中铁框，
所述中铁框的承载台呈折线状，所述承载台内部区域的第一部分的厚度等于所述承载台边缘区域的第二部分的厚度。
可选的，位于所述内部区域的缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
可选的，所述显示面板和所述承载台边缘区域的台面中的至少一个与位于所述边缘区域的缓冲胶带之间存在间隙。
可选的，所述缓冲胶带包括第一子缓冲胶带和第二子缓冲胶带，
所述第一子缓冲胶带的厚度大于所述第二子缓冲胶带的厚度，所述第一子缓冲胶带与所述第一部分贴合，所述第二部分和所述显示面板中的至少一个与所述第二子缓冲胶带之间存在间隙。
可选的，所述缓冲胶带为一体式口字型结构或者由四个胶带条围成。
可选的，所述缓冲胶带由弹性材料制成。
可选的，所述缓冲胶带为泡棉胶带。
第二方面，提供了一种显示装置，所述显示装置包括背光模组，
所述显示模组包括：定位框和缓冲胶带，
所述定位框的承载台上设置有显示面板，所述承载台内部区域的台面到所述显示面板的距离大于所述承载台边缘区域的台面到所述显示面板的距离，
所述缓冲胶带设置在所述承载台上，位于所述内部区域的缓冲胶带的一面与所述显示面板接触，另一面与所述承载台的台面贴合，所述缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
可选的，所述定位框为胶框，
所述胶框的承载台呈台阶状，所述承载台内部区域的第一部分的厚度小于所述承载台边缘区域的第二部分的厚度。
可选的，所述定位框为中铁框，
所述中铁框的承载台呈折线状，所述承载台内部区域的第一部分的厚度等于所述承载台边缘区域的第二部分的厚度。
可选的，位于所述内部区域的缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
可选的，所述显示面板和所述承载台边缘区域的台面中的至少一个与位于所述边缘区域的缓冲胶带之间存在间隙。
可选的，所述缓冲胶带包括第一子缓冲胶带和第二子缓冲胶带，
所述第一子缓冲胶带的厚度大于所述第二子缓冲胶带的厚度，所述第一子缓冲胶带与所述第一部分贴合，所述第二部分和所述显示面板中的至少一个与所述第二子缓冲胶带之间存在间隙。
可选的，所述缓冲胶带为一体式口字型结构或者由四个胶带条围成。
可选的，所述缓冲胶带由弹性材料制成。
可选的，所述缓冲胶带为泡棉胶带。
第三方面，提供了一种显示装置的制造方法，所述方法包括：
将缓冲胶带设置在定位框的承载台上，使得位于所述内部区域的缓冲胶带的一面与所述承载台的台面贴合；
将所述显示面板设置在背光模组上，使得所述显示面板与位于所述内部区域的缓冲胶带的另一面接触，所述背光模组为一方面所述的背光模组。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，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1A示出了相关技术中一种液晶显示器的结构示意图；
图1B示出了相关技术中液晶显示面板在缓冲胶带上受到应力的示意图；
图1C示出了相关技术中液晶显示面板在缓冲胶带上受到应力的示意图；
图1D示出了相关技术中另一种液晶显示器的结构示意图；
图2A是本申请实施例提供的包括背光模组的一种显示装置的结构示意图；
图2B是本申请实施例提供的胶框的承载台和缓冲胶带配合使用的结构示意 图；
图2C是本申请实施例提供的承载台本身发生形变时缓冲胶带的示意图；
图2D是本申请实施例提供的承载台发生翘曲形变时缓冲胶带的示意图；
图3A是本申请实施例提供的包括背光模组的另一种显示装置的结构示意图；
图3B是本申请实施例提供的中铁框的承载台和缓冲胶带配合使用的示意图；
图4A是本申请实施例提供的设置有背胶的缓冲胶带的结构示意图；
图4B是本申请实施例提供的一种缓冲胶带的结构示意图；
图4C是本申请实施例提供的再一种缓冲胶带的结构示意图；
图4D是本申请实施例提供的另一种缓冲胶带的结构示意图；
图4E是本申请实施例提供的又一种缓冲胶带的结构示意图；
图5A是本申请实施例提供的一种缓冲胶带的俯视图；
图5B是本申请实施例提供的另一种缓冲胶带的俯视图；
图6是本申请实施例提供的一种显示装置的制造方法的流程图；
图7是本申请实施例提供的设置有缓冲胶带的承载台的示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
图1A示出了相关技术中的液晶显示器的结构示意图，如图1A所示，该液晶显示器包括液晶显示面板001和背光模组002，液晶显示面板001和背光模组002相对设置。其中，液晶显示面板001包括TFT基板01、彩膜基板0011、上偏光片0012和下偏光片0013。背光模组002包括胶框0021、光学膜材0022、导光板0023和背板0024，光学膜材包括扩散膜和棱镜膜。
液晶显示面板001的TFT基板01设置在背光模组002的胶框0021的承载台02，TFT基板01与胶框的承载台02之间设置有缓冲胶带03。缓冲胶03用于在承载台02不平整(比如承载台本身发生形变，或者，在背光模组的胶框与背板卡合时导致承载台发生翘曲形变)时，对TFT基板01起到缓冲作用。然而缓冲胶带03的厚度较均匀且厚度较小，缓冲胶带03的缓冲量较小，缓冲性能较差，液晶显示面板001又容易受到胶框的承载台02的平整度的影响，所以当 胶框的承载台02的平整度较差时，液晶显示面板001会在缓冲胶带03上受到应力，造成液晶显示器亮度不均匀，导致黑态画面的显示效果较差。
图1B示出了当图1A中的承载台02本身发生形变时，液晶显示面板在缓冲胶带03上受到应力的示意图。当承载台02本身发生形变时，缓冲胶带03也发生形变，而缓冲胶带03的厚度较均匀且厚度较小，因此当承载台的形变量大于缓冲胶带的压缩量时，承载台会通过缓冲胶带向液晶显示面板传递不均匀的应力，液晶显示面板在缓冲区域处受力，造成液晶显示器亮度不均匀，导致黑态画面的显示效果较差。图1B中的其他标号可以参考图1A进行说明。
图1C示出了当图1A中的承载台02发生翘曲形变时，液晶显示面板在缓冲胶带03上受到应力的示意图。当承载台02发生翘曲形变时，缓冲胶带03也发生翘曲形变，而缓冲胶带03的厚度较均匀且厚度较小，因此当承载台的形变量大于缓冲胶带的压缩量时，承载台也会通过缓冲胶带向液晶显示面板传递不均匀的应力，液晶显示面板在缓冲区域处受力，导致黑态画面的显示效果较差。且实际应用中，承载台除了会发生翘曲形变外，还可能会发生下坠现象，对液晶显示面板产生拉力，同样也会降低黑态画面的显示效果。
由图1B和图1C可知，当胶框的承载台的平整度较差时，缓冲胶带无法对液晶显示面板起到较好的缓冲作用。
另外，相关技术中，如图1D所示，也可以采用中铁框(中铁框指的是位于液晶显示器中部的铁框)04来代替图1A中的胶框0021。图1D中的其他标号可以参考图1A进行说明。
本申请实施例提供了一种背光模组100，如图2A所示，该背光模组100包括：定位框110和缓冲胶带120。
定位框110的承载台111上设置有显示面板001，承载台111内部区域A的台面到显示面板001的距离d1大于承载台111边缘区域B的台面到显示面板001的距离d2。
缓冲胶带120设置在承载台111上，位于内部区域A的缓冲胶带的一面与显示面板001接触，另一面与承载台111的台面贴合。缓冲胶带120与承载台111的台面贴合的一面设置有背胶(图2A中未画出)。背胶起到稳固缓冲胶带的作用。缓冲胶带与定位框配合，两者用于背光模组的周边区域，其中，定位框起到定位和支撑的作用。
综上所述，本申请实施例提供的背光模组，由于定位框的承载台内部区域的台面到显示面板的距离大于承载台边缘区域的台面到显示面板的距离，位于内部区域的缓冲胶带的一面与显示面板接触，另一面与承载台的台面贴合，位于内部区域的缓冲胶带的厚度较大，所以当承载台的平整度较差时，可以避免显示面板在缓冲胶带上受到应力，从而使得显示器亮度更加均匀，提高了黑态画面的显示效果。
在本申请实施例中，位于承载台边缘区域B的缓冲胶带，与显示面板和承载台边缘区域的台面的接触方式有四种，第一种是：位于边缘区域B的缓冲胶带的一面与显示面板接触，另一面与承载台的台面存在间隙；第二种是：位于边缘区域B的缓冲胶带的一面与显示面板存在间隙，另一面与承载台的台面贴合；第三种是：位于边缘区域B的缓冲胶带的一面与显示面板存在间隙，另一面与承载台的台面存在间隙；第四种是：位于边缘区域B的缓冲胶带的一面与显示面板接触，另一面与承载台的台面贴合。
为了稳固缓冲胶带，当位于承载台边缘区域B的缓冲胶带的另一面与承载台的台面存在间隙时，位于承载台内部区域A的缓冲胶带与承载台的台面贴合的一面需要设置背胶；当位于边缘区域B的缓冲胶带的另一面与承载台的台面贴合且该另一面设置背胶时，位于内部区域A的缓冲胶带与承载台的台面贴合的一面可以设置背胶，也可以不设置背胶。
在上述第一至第三种接触方式中，由于显示面板和承载台边缘区域的台面中的至少一个与位于边缘区域的缓冲胶带之间存在间隙，所以当承载台本身发生形变时，如果位于承载台边缘区域B的缓冲胶带发生形变，发生形变后的缓冲胶带会填充于间隙中，当位于边缘区域B的缓冲胶带的形变量过大时，位于边缘区域B的缓冲胶带才会起到缓冲的作用，所以避免了承载台通过缓冲胶带向显示面板传递不均匀的应力。如果位于承载台内部区域A的缓冲胶带发生形变，由于位于内部区域A的缓冲胶带的厚度较大，缓冲量较大，缓冲性能较好，所以承载台的形变量会被该内部区域A的缓冲胶带所抵消。
在第四种接触方式中，位于承载台内部区域A的缓冲胶带的厚度较大，缓冲量较大，缓冲性能较好，所以可以起到主缓冲(即起到主要的缓冲作用)的作用，而位于承载台边缘区域B的缓冲胶带的厚度较小，所以可以起到辅助缓冲的作用。当定位框的承载台发生翘曲形变时，显示面板会先缓冲在位于内部区域的缓冲胶带上，再缓冲在位于边缘区域的缓冲胶带上。且当位于内部区域 的缓冲胶带的形变量过大时，位于边缘区域的缓冲胶带才会起到辅助缓冲的作用，所以避免了承载台通过缓冲胶带向显示面板传递不均匀的应力。
在本申请实施例中，由于位于承载台边缘区域B的缓冲胶带，与显示面板和承载台边缘区域的台面的接触方式有四种，所以缓冲胶带的结构可以有多种。
图2A示例性地示出了应用上述四种接触方式中的第一种接触方式的缓冲胶带示意图，也即是，在位于承载台边缘区域B的缓冲胶带的一面与显示面板001接触，另一面与承载台111的台面存在间隙的情况下，缓冲胶带的示意图。图2A中，位于承载台内部区域A的缓冲胶带与承载台的台面贴合的一面设置有背胶。为了进一步稳固缓冲胶带，位于承载台边缘区域B的缓冲胶带与显示面板接触的一面可以设置背胶，位于承载台内部区域A的缓冲胶带与显示面板接触的一面可以设置背胶。
进一步的，参见图2A，显示面板001还包括彩膜基板0011、上偏光片0012和下偏光片0013。彩膜基板0011与TFT基板01相对设置，彩膜基板0011与TFT基板01之间设置有液晶层，上偏光片0012设置在彩膜基板0011远离TFT基板01的一侧，下偏光片0013设置在TFT基板01远离彩膜基板0011的一侧。背光模组100还包括背板0024，背板0024上设置有导光板0023，导光板用于将光源发出的光束均匀地向远离背板的方向引导。导光板0023上设置有光学膜材0022，光学膜材用于改变从导光板射出的光线的方向，增强射出的光线的光强。示例的，光学膜材可以包括上扩散膜、棱镜膜和下扩散膜。
示例的，如图2A所示，定位框110可以为胶框，胶框的承载台111呈台阶状。如图2B所示，承载台111内部区域的第一部分1110的厚度h1小于承载台111边缘区域的第二部分1120的厚度h2。承载台第一部分的厚度小于承载台第二部分的厚度，位于承载台内部区域的缓冲胶带的厚度较大，该内部区域的缓冲胶带的缓冲量较大，缓冲性能较好。同时，承载台第一部分的厚度小于承载台第二部分的厚度也可以降低承载台的形变量。
图2C示例性示出了应用上述四种接触方式中的第三种接触方式的缓冲胶带示意图，也即是，在位于承载台边缘区域B的缓冲胶带的一面与显示面板001存在间隙，另一面与承载台111的台面存在间隙的情况下，缓冲胶带的示意图。图2C中，位于承载台内部区域A的缓冲胶带与承载台的台面贴合的一面设置有背胶。为了进一步稳固缓冲胶带，位于承载台内部区域A的缓冲胶带与显示面板接触的一面设置可以设置背胶。
如图2C所示，位于承载台内部区域A的缓冲胶带的厚度较大，该内部区域的缓冲胶带的缓冲性能较好，可以起到主缓冲的作用；位于边缘区域B的缓冲胶带的厚度较小，可以带起到辅助缓冲的作用，该边缘区域的缓冲胶带可以承载外界应力，其承载强度较大。由于位于边缘区域B的缓冲胶带的一面与显示面板存在间隙，另一面与承载台的台面存在间隙，所以当承载台111边缘区域B发生形变时，位于边缘区域B的缓冲胶带发生形变，发生形变后的缓冲胶带填充于间隙中，如图2C中虚线所标识的区域。当位于边缘区域B的缓冲胶带的形变量过大时，位于边缘区域B的缓冲胶带才会被压缩，起到辅助缓冲的作用。所以降低了承载台边缘区域B的形变对显示面板产生作用力的风险，避免了承载台通过缓冲胶带向显示面板传递不均匀的应力，提高了显示器亮度的均匀性，提高了黑态画面的显示效果。
此外，当承载台内部区域A发生形变时，相较于相关技术中的承载台的厚度，位于内部区域A的缓冲胶带的厚度较大，缓冲量大大增强，承载台的形变量会被该内部区域的缓冲胶带所抵消，避免了承载台通过缓冲胶带向显示面板传递应力。
图2D示例性示出了应用上述四种接触方式中的第二种接触方式的缓冲胶带示意图，也即是，在位于承载台边缘区域B的缓冲胶带的一面与显示面板001存在间隙，另一面与承载台111的台面贴合情况下，缓冲胶带的示意图。如图2D所示，位于承载台内部区域A的缓冲胶带与承载台的台面贴合的一面设置背胶，和/或，位于承载台边缘区域B的缓冲胶带与承载台的台面贴合的一面设置背胶。为了进一步稳固缓冲胶带，位于承载台内部区域A的缓冲胶带与显示面板接触的一面可以设置背胶。
如图2D所示，当承载台111发生翘曲形变时，显示面板001会先受到位于承载台内部区域A的缓冲胶带的缓冲，再受到位于边缘区域B的缓冲胶带的缓冲，而由于位于内部区域A的缓冲胶带的厚度较大，所以缓冲量大大增强，避免了承载台通过缓冲胶带向显示面板传递应力。
示例的，缓冲胶带可以由弹性材料制成。位于承载台内部区域A的缓冲胶带对位于承载台边缘区域B的缓冲胶带不产生杠杆作用，也即，位于内部区域A的缓冲胶带的形变不会对位于边缘区域B的缓冲胶带产生影响。
当然，图2D中，也可以是，位于边缘区域B的缓冲胶带的一面与显示面板001接触，另一面与承载台111的台面贴合。
示例的，如图3A所示，定位框110可以为中铁框，中铁框的承载台111呈折线状。图3A中的其他标记含义可以参考图2A进行说明。
可选的，如图3B所示，承载台111内部区域A的第一部分1130的厚度g1可以等于承载台111边缘区域B的第二部分1140的厚度g2。同样的，由于承载台111呈折线状，且第一部分的厚度等于第二部分的厚度，第一部分下沉，位于承载台内部区域的缓冲胶带的厚度较大，所以该内部区域的缓冲胶带的缓冲量较大，缓冲性能较好。在实际制造过程中，由于存在制造误差，所以承载台内部区域的第一部分的厚度也可以不等于承载台边缘区域的第二部分的厚度。在本申请实施例中，只需承载台内部区域的台面到显示面板的距离大于承载台边缘区域的台面到显示面板的距离即可。
图4A示例性示出了图2A中缓冲胶带的结构示意图。如图4A所示，为了进一步稳固缓冲胶带，位于承载台内部区域A的缓冲胶带与显示面板接触的一面可以设置背胶130，位于承载台边缘区域B的缓冲胶带与显示面板接触的一面可以设置背胶130。背胶使得缓冲胶带与显示面板的粘附力更强。示例的，缓冲胶带120可以由硅胶或耐高温的泡棉等不易掉渣的材料制成。
图4B示例性示出了图2C中缓冲胶带的结构示意图。位于承载台内部区域A的缓冲胶带的一面与显示面板(如图2C中的001)接触，另一面与承载台(如图2C中的111)的台面贴合，位于承载台边缘区域B的缓冲胶带的一面与显示面板存在间隙，另一面与承载台的台面存在间隙。位于内部区域A的缓冲胶带的厚度大于位于边缘区域B的缓冲胶带的厚度。示例的，如图4B所示，位于内部区域A的缓冲胶带可以由两部分组成，两部分之间可以设置背胶，以增强缓冲胶带的粘附力。
示例的，如图4C所示，缓冲胶带120可以包括第一子缓冲胶带121和第二子缓冲胶带122。其中，第一子缓冲胶带121的厚度n1大于第二子缓冲胶带122的厚度n2，第一子缓冲胶带121与承载台内部区域的第一部分(如图2B中的1110)贴合，承载台边缘区域的第二部分(如图2B中的1120)和显示面板中的至少一个与第二子缓冲胶带122之间存在间隙，可以是：第二部分与第二子缓冲胶带122之间存在间隙，显示面板与第二子缓冲胶带122之间存在间隙；也可以是：第二部分与第二子缓冲胶带122之间存在间隙，显示面板与第二子缓冲胶带122接触；也可以是：第二部分与第二子缓冲胶带122接触，显示面板与第二子缓冲胶带122之间存在间隙。图4C示例性示出了图2A中缓冲胶带的 结构示意图，即第二部分与第二子缓冲胶带122之间存在间隙，显示面板与第二子缓冲胶带122接触。
在本申请实施例中，第一子缓冲胶带的厚度大于第二子缓冲胶带的厚度，第一子缓冲胶带的缓冲量大于第二子缓冲胶带的缓冲量。对于显示面板来说，第一子缓冲胶带起到主缓冲的作用，第二子缓冲胶带起到辅助缓冲的作用。本申请实施例保留了第一子缓冲胶带的遮光能力，且增大了第一子缓冲胶带的缓冲性能。
图4D示例性示出了图2A中缓冲胶带的结构示意图，缓冲胶带120也可以包括第三子缓冲胶带123和第四子缓冲胶带124。其中，第三子缓冲胶带123设置在第四子缓冲胶带124的上方，第三子缓冲胶带123的长度x1大于第四缓冲胶带124的长度x2。第三子缓冲胶带123的一面与显示面板接触，另一面的第一区域(该第一区域与承载台内部区域相对)与第四子缓冲胶带124的一面贴合，第四子缓冲胶带124的另一面与承载台的台面贴合。进一步的，为了增强缓冲胶带的粘附力，第三子缓冲胶带123和第四子缓冲胶带124之间可以设置背胶。示例的，第三子缓冲胶带123可以由泡棉等缓冲性能较好的材质制成，第四子缓冲胶带124可以由硅胶或泡棉等不易掉渣的材料制成。
此外，图4B中的缓冲胶带也可以如图4E所示，位于承载台内部区域A的缓冲胶带可以由相互叠加的三部分组成，相邻部分之间可以设置有背胶。位于承载台边缘区域B的缓冲胶带的一面与显示面板存在间隙，另一面与承载台的台面存在间隙。
示例的，如图5A所示，本申请实施例中的缓冲胶带120可以为一体式口字型结构。在将该缓冲胶带设置在定位框的承载台上时，可以一次性完成设置操作。
示例的，如图5B所示，本申请实施例中的缓冲胶带120也可以由四个胶带条围成。在将该缓冲胶带设置在定位框的承载台上时，可以将每一个胶带条分别设置在承载台上。
需要补充说明的是，图5A和图5B示出的是缓冲胶带的俯视图。图1A至图4E示出的是缓冲胶带的侧视图。
本申请实施例提供的背光模组适用于车载显示器、监视器、电视机、笔记本、工控显示设备、医疗显示设备、导航仪、手机、数码相框等具有显示功能的产品或部件，尤其适用于高亮度的显示装置，比如车载显示器。
综上所述，本申请实施例提供的背光模组，由于定位框的承载台内部区域的台面到显示面板的距离大于承载台边缘区域的台面到显示面板的距离，位于内部区域的缓冲胶带的一面与显示面板接触，另一面与承载台的台面贴合，位于内部区域的缓冲胶带的厚度较大，所以当承载台的平整度较差时，可以避免显示面板在缓冲胶带上受到应力，从而使得显示器亮度更加均匀，提高了黑态画面的显示效果。
本申请实施例还提供了一种显示装置，该显示装置可以包括上述实施例中的背光模组。
该显示装置可以为车载显示器、监视器、电视机、笔记本、工控显示设备、医疗显示设备、导航仪、手机、数码相框等具有显示功能的产品或部件。本申请实施例提供的显示装置可以适用于车载显示、医疗显示、航空显示、工业控制和智能家居等众多领域。
本申请实施例还提供了一种显示装置的制造方法，如图6所示，该方法包括：
步骤601、将缓冲胶带设置在定位框的承载台上，使得位于承载台内部区域的缓冲胶带的一面与承载台的台面贴合。
示例的，如图7所示，将缓冲胶带120设置在定位框110的承载台111上，使得位于承载台111内部区域A的缓冲胶带的一面与承载台111的台面贴合。示例的，位于承载台111边缘区域B的缓冲胶带的一面与承载台111的台面可以存在间隙。位于承载台111内部区域A的缓冲胶带与承载台111的台面贴合的一面设置有背胶。缓冲胶带与定位框配合以被用于背光模组的周边区域。
步骤602、将显示面板设置在背光模组上，使得显示面板与位于承载台内部区域的缓冲胶带的另一面接触。
该显示装置的制造方法中的背光模组为上述实施例中的背光模组。
如图2A所示，将显示面板001设置在背光模组100上，使得显示面板001与位于承载台内部区域A的缓冲胶带120的另一面接触。示例的，位于承载台边缘区域B的缓冲胶带的另一面与显示面板001可以接触。
该定位框110的承载台111内部区域A的台面到显示面板001的距离d1大于承载台111边缘区域B的台面到显示面板001的距离d2。由于定位框的承载 台内部区域的台面到显示面板的距离大于承载台边缘区域的台面到显示面板的距离，位于内部区域的缓冲胶带的一面与显示面板接触，另一面与承载台的台面贴合，位于内部区域的缓冲胶带的厚度较大，所以当承载台的平整度较差时，可以避免显示面板在缓冲胶带上受到应力，从而使得显示器亮度更加均匀，提高了黑态画面的显示效果。
参见图2A，显示面板001可以包括下偏光片0013、TFT基板01、彩膜基板0011和上偏光片0012。
综上所述，本申请实施例提供的显示装置的制造方法，先将缓冲胶带设置在定位框的承载台上，再将显示面板设置在背光模组上，且该背光模组中，定位框的承载台内部区域的台面到显示面板的距离大于承载台边缘区域的台面到显示面板的距离，位于内部区域的缓冲胶带的一面与显示面板接触，另一面与承载台的台面贴合，位于内部区域的缓冲胶带的厚度较大，所以当承载台的平整度较差时，可以避免显示面板在缓冲胶带上受到应力，因此，通过该方法得到的显示装置的亮度更加均匀，黑态画面的显示效果更好。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的较佳实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (19)

  1. 一种背光模组，所述背光模组包括：定位框和缓冲胶带，
    所述定位框的承载台上设置有显示面板，所述承载台内部区域的台面到所述显示面板的距离大于所述承载台边缘区域的台面到所述显示面板的距离，
    所述缓冲胶带设置在所述承载台上，位于所述内部区域的缓冲胶带的一面与所述显示面板接触，另一面与所述承载台的台面贴合，所述缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
  2. 根据权利要求1所述的背光模组，所述定位框为胶框，
    所述胶框的承载台呈台阶状，所述承载台内部区域的第一部分的厚度小于所述承载台边缘区域的第二部分的厚度。
  3. 根据权利要求1所述的背光模组，所述定位框为中铁框，
    所述中铁框的承载台呈折线状，所述承载台内部区域的第一部分的厚度等于所述承载台边缘区域的第二部分的厚度。
  4. 根据权利要求1所述的背光模组，位于所述内部区域的缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
  5. 根据权利要求1所述的背光模组，所述显示面板和所述承载台边缘区域的台面中的至少一个与位于所述边缘区域的缓冲胶带之间存在间隙。
  6. 根据权利要求2或3所述的背光模组，所述缓冲胶带包括第一子缓冲胶带和第二子缓冲胶带，
    所述第一子缓冲胶带的厚度大于所述第二子缓冲胶带的厚度，所述第一子缓冲胶带与所述第一部分贴合，所述第二部分和所述显示面板中的至少一个与所述第二子缓冲胶带之间存在间隙。
  7. 根据权利要求1所述的背光模组，
    所述缓冲胶带为一体式口字型结构或者由四个胶带条围成。
  8. 根据权利要求1所述的背光模组，
    所述缓冲胶带由弹性材料制成。
  9. 根据权利要求8所述的背光模组，
    所述缓冲胶带为泡棉胶带。
  10. 一种显示装置，所述显示装置包括背光模组，
    所述显示模组包括：定位框和缓冲胶带，
    所述定位框的承载台上设置有显示面板，所述承载台内部区域的台面到所述显示面板的距离大于所述承载台边缘区域的台面到所述显示面板的距离，
    所述缓冲胶带设置在所述承载台上，位于所述内部区域的缓冲胶带的一面与所述显示面板接触，另一面与所述承载台的台面贴合，所述缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
  11. 根据权利要求10所述的显示装置，所述定位框为胶框，
    所述胶框的承载台呈台阶状，所述承载台内部区域的第一部分的厚度小于所述承载台边缘区域的第二部分的厚度。
  12. 根据权利要求10所述的显示装置，所述定位框为中铁框，
    所述中铁框的承载台呈折线状，所述承载台内部区域的第一部分的厚度等于所述承载台边缘区域的第二部分的厚度。
  13. 根据权利要求10所述的显示装置，位于所述内部区域的缓冲胶带与所述承载台的台面贴合的一面设置有背胶。
  14. 根据权利要求10所述的显示装置，所述显示面板和所述承载台边缘区域的台面中的至少一个与位于所述边缘区域的缓冲胶带之间存在间隙。
  15. 根据权利要求11或12所述的显示装置，所述缓冲胶带包括第一子缓冲胶带和第二子缓冲胶带，
    所述第一子缓冲胶带的厚度大于所述第二子缓冲胶带的厚度，所述第一子缓冲胶带与所述第一部分贴合，所述第二部分和所述显示面板中的至少一个与所述第二子缓冲胶带之间存在间隙。
  16. 根据权利要求10所述的显示装置，
    所述缓冲胶带为一体式口字型结构或者由四个胶带条围成。
  17. 根据权利要求10所述的显示装置，
    所述缓冲胶带由弹性材料制成。
  18. 根据权利要求17所述的显示装置，
    所述缓冲胶带为泡棉胶带。
  19. 一种显示装置的制造方法，所述方法包括：
    将缓冲胶带设置在定位框的承载台上，使得位于所述承载台内部区域的缓冲胶带的一面与所述承载台的台面贴合；
    将所述显示面板设置在背光模组上，使得所述显示面板与位于所述承载台内部区域的缓冲胶带的另一面接触，所述背光模组为权利要求1至9任一所述的背光模组。
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