Nothing Special   »   [go: up one dir, main page]

WO2022165798A1 - 光学膜片、背光模组及显示装置 - Google Patents

光学膜片、背光模组及显示装置 Download PDF

Info

Publication number
WO2022165798A1
WO2022165798A1 PCT/CN2021/075780 CN2021075780W WO2022165798A1 WO 2022165798 A1 WO2022165798 A1 WO 2022165798A1 CN 2021075780 W CN2021075780 W CN 2021075780W WO 2022165798 A1 WO2022165798 A1 WO 2022165798A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical film
light
guide plate
light guide
lugs
Prior art date
Application number
PCT/CN2021/075780
Other languages
English (en)
French (fr)
Inventor
许海峰
王凯文
Original Assignee
京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US18/272,568 priority Critical patent/US20240069385A1/en
Priority to CN202180000201.XA priority patent/CN115176197B/zh
Priority to PCT/CN2021/075780 priority patent/WO2022165798A1/zh
Publication of WO2022165798A1 publication Critical patent/WO2022165798A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to an optical film, a backlight module and a display device.
  • LCD Liquid Crystal Display
  • OLED Organic Light-Emitting Diode
  • liquid crystal is a material that cannot emit light
  • the liquid crystal display panel needs to cooperate with a backlight module to present images.
  • an optical film is arranged in the backlight module.
  • the fixing method of the backlight module to the optical film is to set a protrusion on the edge of the light guide plate, and at the same time set a notch at the corresponding position of the optical film. After the optical film is placed on the light guide plate, the notch of the optical film will be It is stuck on the protrusion of the light guide plate and plays the role of preliminary positioning of the optical film.
  • the edge of the display screen becomes narrower and narrower, the distance between the protrusion of the light guide plate and the edge of the display area is reduced, which will cause bright spots on the edge of the display area, affecting the display effect.
  • an optical film including:
  • At least two lugs are connected to two opposite sides of the diaphragm body and form an integral structure with the diaphragm body;
  • a groove is provided at the connection line between the lug and the diaphragm body, and the groove extends along the connection line.
  • the sidewall surface of the side of the groove close to the diaphragm body is flush with the sidewall surface of the side corresponding to the diaphragm body.
  • the groove is provided along the connecting line through the lug.
  • the diaphragm body is rectangular, two opposite sides of the diaphragm body are provided with the lugs, and each side is connected to at least one of the lugs.
  • the diaphragm body is rectangular, the lugs are provided on three adjacent sides of the diaphragm body, and each side is connected to at least one lug.
  • the depth of the groove is 1/3 ⁇ 1/2 of the thickness of the diaphragm body.
  • a width of the groove in a direction perpendicular to the connecting line is 0.1 mm ⁇ 0.5 mm.
  • the optical film is a prism film or a brightness enhancement film.
  • an embodiment of the present disclosure provides a backlight module, including: a backplane and any of the above optical films; wherein,
  • the edge of the back plate is provided with a cutout corresponding to the lug of the optical film, and the lug of the optical film overlaps the cutout of the back plate.
  • it also includes:
  • the light guide plate located on the backplane;
  • the light guide plate includes a light incident surface and a light exit surface, and the optical film is located on one side of the light exit surface of the light guide plate;
  • a light bar located on one side of the light incident surface of the light guide plate
  • the lugs of the optical film are disposed at at least two opposite sides except close to the light bar.
  • the groove on the lug is located on the side facing the light guide plate; or, the groove on the lug is located on the side away from the light guide plate.
  • it also includes:
  • the adhesive layer is located between the light guide plate and the optical film; the adhesive layer is located on the side of the light guide plate close to the light bar.
  • the optical film includes a prism sheet and a brightness enhancement sheet
  • Grooves are provided on the lugs of at least one optical film of the prism sheet and the light-enhancing sheet.
  • it also includes:
  • a diffuser located between the light guide plate and the optical film
  • the plastic frame is arranged around the edges of the back plate, the light guide plate, the diffusion sheet and the optical film.
  • an embodiment of the present disclosure provides a display device including any one of the above-mentioned backlight modules, and a display panel located on a light-emitting side of the backlight module.
  • FIG. 1 is a schematic top view of a backlight module in the related art
  • FIG. 3 is the second schematic diagram of the cross-sectional structure of the backlight module in the related art
  • FIG. 4 is one of the schematic top-view structural diagrams of the optical film provided by the embodiment of the present disclosure.
  • FIG. 5 is one of the schematic cross-sectional structural diagrams of the backlight module provided by the embodiment of the present disclosure.
  • FIG. 6 is the second schematic top-view structure diagram of the optical film provided by the embodiment of the present disclosure.
  • FIG. 7 is the second schematic diagram of the cross-sectional structure of the backlight module provided by the embodiment of the present disclosure.
  • FIG. 8 is a schematic top-view structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 9 is a third schematic diagram of a cross-sectional structure of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 10 is a fourth schematic diagram of a cross-sectional structure of a backlight module provided by an embodiment of the present disclosure.
  • liquid crystal displays have the advantages of low power consumption, small size, and low radiation.
  • the liquid crystal display panel is a non-self-luminous panel and needs to be used with a backlight module.
  • the LCD screen is mainly composed of a backlight module and a liquid crystal display panel.
  • the liquid crystal display panel itself does not emit light, and needs to rely on the light source provided by the backlight module to achieve brightness display.
  • the imaging principle of the liquid crystal display is to place the liquid crystal between two pieces of conductive glass, driven by the electric field between the two electrodes, to cause the electric field effect of the liquid crystal molecules to distort, so as to control the transmission or shielding function of the backlight source, so as to display the image. . If a color filter is added, color images can be displayed.
  • an optical film is arranged in the backlight module.
  • FIG. 1 is a schematic top-view structure diagram of a backlight module in the related art.
  • the backlight module generally includes: a backplane 01 , a light guide plate 02 located on the backplane 01 , and an optical film 03 located on the light guide plate 02 .
  • a protrusion 021 is set on the edge of the light guide plate 02, and a notch 031 is set at the corresponding position of the optical film 03.
  • the optical film 03 is placed on the light guide plate 02, the optical film The notches 031 of the film will be stuck on the protrusions 021 of the light guide plate, and play the role of preliminarily positioning the optical film 03 .
  • FIG. 2 is a schematic diagram of a cross-sectional structure of a backlight module in the related art
  • FIG. 3 is a schematic diagram of a cross-sectional structure of the backlight module in the related art.
  • the protrusions 021 provided on the edge of the light guide plate 02 are integrated with the light guide plate 02, so the protrusions 021 also have the function of guiding light.
  • the light is displayed after being acted by the protrusions 021. Since the frame of the display device is wider, the frame 04 will cover the edges of the light guide plate 02 and the optical film 03, so that the distance a from the protrusion 021 of the light guide plate 02 to the edge of the frame 04 is larger, The light derived from the protrusions 021 will be blocked by the frame and will not be incident on the display area AA.
  • the distance a from the protrusion 021 of the light guide plate 02 to the edge of the frame 04 also decreases, and the range of the display area AA expands toward the edge. , then the light derived from the protrusions 021 can no longer be blocked by the frame 04 and exits to the display area AA, so that bright spots will be generated on the edge of the display area where the protrusions 021 are set, affecting the display effect.
  • FIG. 4 is one of the schematic top-view structural diagrams of the optical film provided by the embodiment of the present disclosure.
  • the optical film provided by the embodiment of the present disclosure includes:
  • the diaphragm body 301 and at least two lugs 302 are connected to two opposite sides of the diaphragm body 301 to form an integral structure with the diaphragm body 301 .
  • the film body 301 and the lugs on both sides of the film body 301 can be produced by one-time molding.
  • the back plate 10 should also be provided at the position corresponding to the lugs 302 of the optical film. notches, so that the lugs 302 of the optical film overlap with the notches of the back plate 10 to realize the preliminary fixing of the optical film.
  • the lugs 302 of the optical film are arranged at the side of the backplane farther from the display area AA, it can be well applied to a display device with a narrow frame, and no bright spots will be generated on the edge of the display area AA.
  • FIG. 5 is one of the schematic cross-sectional structural diagrams of the backlight module provided by the embodiment of the present disclosure.
  • the side wall of the diaphragm body 301 in the area other than the lug 302 is closer to the display area AA than the lug 302, so the side wall of the diaphragm body 301 in the area other than the lug 302 is closer to the display area AA than the lug 302.
  • the light reflected by the wall can be incident into the display area AA, so that the edge of the display area AA will generate a dark shadow at the location where the lugs 302 are arranged, which affects the display effect.
  • FIG. 6 is the second schematic top-view structure diagram of the optical film provided by the embodiment of the present disclosure
  • a groove is provided at the connection line between the lug 302 and the film body 301 .
  • the groove 303 extends along the connecting line.
  • FIG. 7 is the second schematic diagram of the cross-sectional structure of the backlight module provided by the embodiment of the present disclosure.
  • the sidewall of the groove 303 can reflect the light to the display area AA, and strengthen the position of the lug 302
  • the reflection effect of light can improve the brightness uniformity at the edge of the display area AA and avoid the problem of dark shadows at the position of the lugs.
  • the sidewall surface of the groove 303 on the side close to the diaphragm body 301 is flush with the sidewall surface of the side corresponding to the diaphragm body 301 .
  • the side wall of the groove 303 and the side wall of the diaphragm body 301 are on the same plane, so that the side wall of the diaphragm body 301 and the side wall of the groove 303 can be flush with the surface where the light is reflected, so that the display can be
  • the uniformity of the brightness at the edge of the area AA is better.
  • the grooves 303 provided at the connection between the lugs 302 and the diaphragm body 301 are provided through the lugs 302 along the connecting lines formed at the connection between the lugs 302 and the diaphragm body 301 . That is to say, the groove 303 provided on the lug 302 runs through the entire width of the lug 302, so that the lug 302 can form a groove 303 flush with the side wall of the diaphragm body in the direction of the entire width.
  • the uniformity of the brightness at the edge of the display area AA can be made better.
  • the grooves 303 on the lugs 302 can be made by a half-cut process, and the lugs are half-cut along the sides of the diaphragm body 301 with a cutter, so as to form the grooves 303 at the positions where the lugs 302 are connected to the diaphragm body 301 .
  • the depth of the groove 303 is 1/3 ⁇ 1/2 of the thickness of the diaphragm body. In this way, the connection stability between the lugs 302 and the diaphragm body 301 can be ensured, and the side walls of the grooves 303 can enhance the reflection effect of light at the position of the lugs 302, and improve the uniformity of the brightness at the edge of the display area AA. sex.
  • the width of the groove 303 may be the same as the thickness of the tool used. In the embodiment of the present disclosure, the width of the groove 303 in the direction perpendicular to the side edge of the diaphragm body is 0.1 mm ⁇ 0.5 mm. If the width of the groove 303 is too large, the strength of the connection area between the lug 302 and the diaphragm body 301 will be weakened, and if the lug 302 is bumped during the installation process, the lug 302 may be broken and other problems; the groove 303 If the width is too small, it is not conducive to production. Therefore, in the embodiment of the present disclosure, the width of the groove 303 is set within an appropriate range to avoid the above problems.
  • the film body 301 of the optical film is usually set in a rectangular shape, and the connecting lugs 302 are generally set at two opposite sides of the film body 301 , thereby ensuring that Stable performance of the optical film when it is fixed to the back plate 10 .
  • Each side of the diaphragm body 301 may be connected to at least one lug 302 .
  • FIG. 8 is a schematic top-view structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • the lugs 302 may also be disposed at three adjacent sides of the diaphragm body 301 , and each side of the diaphragm body 301 may be connected to at least one lug 302 .
  • the optical film can be positioned in both directions.
  • appropriate positions and appropriate numbers of the lugs 302 may be set as required, and the embodiments of the present disclosure do not limit the placement positions and the specific set numbers.
  • the prism sheet and the light-enhancing sheet are used to improve the brightness of the backlight under the normal viewing angle, and at the same time, they also have the effect of adjusting the propagation path of the light. Therefore, the present disclosure
  • at least one of the prism sheet and the light-enhancing sheet may be provided with a groove at the connection between its lugs and the film body, so as to improve the uniformity of brightness at the edge of the display area.
  • FIG. 9 is a third schematic diagram of a cross-sectional structure of a backlight module provided by an embodiment of the present disclosure.
  • the backlight module provided by the embodiment of the present disclosure includes: a backplane 10 , a light guide plate 20 , an optical film, and a light bar 40 .
  • the backplane 10 is located at the bottom of the backlight module and has the functions of supporting and bearing.
  • the backplane 10 is generally a rectangular structure, and when applied to a special-shaped display device, its shape is adapted to the shape of the display device.
  • the material of the back plate 10 is aluminum, iron, aluminum alloy or iron alloy, etc., which can play the role of heat dissipation.
  • the back plate 10 is used to fix the carrying light source and the light guide plate 20, and is also used to fix the edge positions of components such as optical films.
  • the edge of the back plate 10 is provided with a plurality of notches for overlapping the lugs of the optical film.
  • the light guide plate 20 is disposed on the back plate 10 for guiding light.
  • the light guide plate 20 can be made of acrylic plate or polycarbonate PC sheet, or can also be made of other transparent materials with high refractive index and low absorption rate, which is not limited herein.
  • the application principle of the light guide plate 20 is to use the total reflection property of light. When the light emitted by the light source enters the light guide plate at a set angle, the light guide plate has a high refractive index, so that the total reflection occurs when the light is incident on its surface. , so that the light emitted from the light source can be transmitted from one side of the light guide plate to the other side, converting the line light source into a surface light source, and providing backlight for the display panel.
  • the light guide dots can be formed on the bottom surface of the light guide plate by laser engraving, V-shaped cross grid engraving or UV screen printing technology.
  • the reflected light will spread to all angles, and some of the light incident on the surface of the light guide plate no longer meets the condition of total reflection, so it can be emitted on the front of the light guide plate.
  • the light guide plate can emit light evenly.
  • the light bar 40 is located on the light incident surface side of the light guide plate 20 and serves as a backlight source.
  • one side surface of the light guide plate 20 is the light incident surface
  • the light bar 40 can be arranged on the light incident surface side of the light guide plate 20 .
  • a plurality of light sources will be arranged on the light bar 40.
  • a light emitting diode Light Emitting Diode, LED for short
  • the light source faces the light incident surface of the light guide plate 20 to emit light, so that the emitted light is emitted from the light guide.
  • the light incident surface of the surface 20 is incident on the inside of the light guide plate.
  • the optical film is located on the light-emitting surface side of the light guide plate 20 .
  • the optical film includes: a film body 301 and at least two lugs 302 , and the lugs of the optical film are disposed at at least two opposite sides except close to the light bar.
  • the lugs 302 are connected to two opposite sides of the diaphragm body 301 to form an integral structure with the diaphragm body 301 .
  • the film body 301 and the lugs on both sides of the film can be produced by one-time molding.
  • the position of the notch on the back plate 10 corresponds to the position of the lug 302 of the optical film.
  • the optical film is disposed on the light guide plate 20 away from the back plate 10. On one side of the optical film, the lugs 302 of the optical film overlap with the notch of the back plate 10 to realize the preliminary fixing of the optical film.
  • a groove 303 is provided at the connecting line between the lug 302 and the diaphragm body 301, and the sidewall of the groove 303 can reflect the light to the display area AA to enhance the reflection effect of the light at the position of the lug 302, thereby improving the display. Brightness uniformity at the edge of zone AA, avoiding the problem of shadows at the lug position.
  • the light guide dots set at the edge of the light guide plate 20 will be relatively sparse or even blank, and the light intensity reflected from the bottom of the light guide plate 20 is weaker than other positions at this time.
  • the uniformity of the backlight is improved by matching the reflection of the light by the side walls of the light guide plate 20 and the side walls of the grooves 303 on the lugs 302 of the optical film.
  • the grooves 303 on the lugs 302 may be provided on the side of the optical film facing away from the light guide plate 20 ; or, as shown in FIG. 9 , the grooves 303 on the lugs 302 may also be provided on the optical film One side of the light guide plate 20 . No matter which side the grooves 303 are arranged on, the effect of improving the uniformity of the brightness at the edge of the display area AA can be achieved.
  • the backlight module further includes an adhesive layer not shown in the figure, the adhesive layer is located on the side of the light guide plate 20 close to the light bar 40, and is used for bonding the light guide plate 20 and the optical film together.
  • the adhesive layer can be a double-sided tape, so that the optical film can be completely fixed in the backlight module through the lugs and the adhesive layer.
  • FIG. 10 is a fourth schematic diagram of a cross-sectional structure of a backlight module provided by an embodiment of the present disclosure.
  • the backlight module further includes: a reflection sheet 50 , a diffusion sheet 31 and a plastic frame 60 .
  • the reflection sheet 50 is located between the back plate 10 and the light guide plate 20 .
  • the reflection sheet 50 can re-reflect the light emitted from the side of the light guide plate 20 away from the light guide surface to the light emitting side, thereby improving the utilization rate of the light source.
  • the diffusing sheet 31 is located between the light-emitting surface of the light guide plate 20 and the optical film.
  • the function of the diffusing sheet 31 is to scatter the incident light, so that the light passing through the diffusing plate 31 is more uniform.
  • the diffuser plate 31 is provided with a scattering particle material, and the light incident on the scattering particle material will be continuously refracted and reflected, so as to achieve the effect of dispersing the light and realize the effect of uniform light.
  • the optical film generally includes a prism sheet 32 and a light enhancement sheet 33 disposed on the side of the diffusing sheet 31 away from the light guide plate 20 .
  • the prism sheet 32 can change the exit angle of light, thereby changing the viewing angle of the display device.
  • the brightness enhancement sheet 33 can improve the brightness of the backlight module, improve the utilization efficiency of light, and at the same time make the outgoing light have the property of polarization, omitting the use of the polarizer under the liquid crystal display panel.
  • grooves may be provided on the lugs of at least one optical film of the prism sheet 32 and the light enhancement sheet 33, for example, grooves may be provided only on the lugs of the prism sheet 32, or only Grooves are provided on the lugs of the light enhancement sheet 33 , or, as shown in FIG. 10 , grooves may be provided on both the prism sheet 32 and the lugs of the light enhancement sheet 33 .
  • the above effect can be achieved as long as grooves are provided on the lugs of at least one optical film of the prism sheet 32 and the brightness enhancement sheet 33 That's it.
  • the plastic frame 60 is arranged around the edges of the back plate 10, the light guide plate 20, the diffuser 31 and the optical film (32 and 33).
  • the plastic frame 60 plays a role of protecting the edges of the backplane, the light guide plate and the optical film, and can also fix the backplane, the light guide plate and the optical film together.
  • the edge of the plastic frame can also play a role in supporting the display panel.
  • the embodiments of the present disclosure take the structure of an edge-type backlight module as an example, and describe each structure in the backlight module in detail.
  • the structure of the optical film provided in the embodiment of the present disclosure can also be applied to a direct type backlight module, which is not limited herein.
  • an embodiment of the present disclosure further provides a display device, the display device includes any of the above-mentioned backlight modules, and a display panel located on the light-emitting side of the backlight module.
  • the display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a TV, a monitor, a notebook computer, a digital photo frame, a vehicle monitor, a navigator, and the like.
  • a display function such as a mobile phone, a tablet computer, a TV, a monitor, a notebook computer, a digital photo frame, a vehicle monitor, a navigator, and the like.
  • the optical film includes a film body and at least two lugs.
  • the lugs are connected to two opposite sides of the film body and are connected to the film body. form a unitary structure.
  • the position of the notch on the back plate corresponds to the position of the lug of the optical film, and the lug of the optical film overlaps the groove of the back plate to realize the preliminary fixation of the optical film.
  • the connecting line between the lug and the diaphragm body is provided with a groove, and the side wall of the groove can reflect the light to the display area, enhance the reflection effect of the light at the position of the lug, thereby improving the uniform brightness at the edge of the display area to avoid the problem of shadows at the lug position.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本公开提供一种光学膜片、背光模组及显示装置，光学膜片包括膜片本体和至少两个凸耳，凸耳连接于膜片本体相对的两个侧边处，与膜片本体构成一体结构。背板上的槽口位置与光学膜片的凸耳的位置相对应，光学膜片的凸耳搭接于背板的槽口中，实现光学膜片的初步固定。凸耳与膜片本体的连接线处设置凹槽，凹槽的侧壁可以起到将光线反射到显示区的作用，增强凸耳位置处光线的反射效果，从而提高显示区边缘处的亮度均匀性，避免在凸耳位置产生暗影的问题。

Description

光学膜片、背光模组及显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种光学膜片、背光模组及显示装置。
背景技术
随着显示技术的不断发展，轻薄窄边框的显示产品越来越受到青睐。目前常用的显示屏为液晶显示屏(Liquid Crystal Display，简称LCD)和有机发光二极管(Organic Light-Emitting Diode，简称OLED)显示屏。其中，液晶显示屏具有成本低、高分辨率、使用寿命长等优势，仍然占据一定的市场份额。
由于液晶是一种不可以发光的材料，因此液晶显示面板需要配合背光模组来呈现图像。为了使背光模组能够提供具有足够亮度以及分布均匀的背光，会在背光模组中设置光学膜片。背光模组对光学膜片的固定方式为在导光板的边缘设置凸起，同时在光学膜片的相应位置设置槽口，将光学膜片放置于导光板上之后，光学膜片的槽口会卡在导光板的凸起上，起到对光学膜片初步定位的作用。
而随着显示屏的边缘设置得越来越窄，上述导光板的凸起与显示区边缘的距离缩小，由此会在显示区边缘产生亮斑，影响显示效果。
发明内容
第一方面，本公开实施例提供一种光学膜片，包括：
膜片本体；和
至少两个凸耳，连接于所述膜片本体相对的两个侧边处，与所述膜片本体构成一体结构；
所述凸耳与所述膜片本体的连接线处设置有凹槽，所述凹槽沿着所述连接线延伸。
本公开一些实施例中，所述凹槽靠近所述膜片本体一侧的侧壁表面与所述膜片本体对应的侧边的侧壁表面持平。
本公开一些实施例中，所述凹槽沿着所述连接线贯穿所述凸耳设置。
本公开一些实施例中，所述膜片本体为矩形，所述膜片本体相对的两个侧边设置有所述凸耳，每个侧边至少连接一个所述凸耳。
本公开一些实施例中，所述膜片本体为矩形，所述膜片本体的相邻三个侧边设置有所述凸耳，每个侧边至少连接一个所述凸耳。
本公开一些实施例中，所述凹槽的深度为所述膜片本体的厚度的1/3～1/2。
本公开一些实施例中，所述凹槽垂直于所述连接线方向上的宽度为0.1mm～0.5mm。
本公开一些实施例中，所述光学膜片为棱镜片或增光片。
第二方面，本公开实施例提供一种背光模组，包括：背板和上述任一光学膜片；其中，
所述背板的边缘对应于所述光学膜片的凸耳处设置有切口，所述光学膜片凸耳搭接于所述背板的切口中。
本公开一些实施例中，还包括：
导光板，位于所述背板上；所述导光板包括入光面和出光面，所述光学膜片位于所述导光板的出光面一侧；
灯条，位于所述导光板的入光面一侧；
所述光学膜片的凸耳设置于除靠近所述灯条以外的至少两个相对的侧边处。
本公开一些实施例中，所述凸耳上的凹槽位于面向所述导光板的一侧；或者，所述凸耳上的凹槽位于背离所述导光板的一侧。
本公开一些实施例中，还包括：
粘接层，位于所述导光板与所述光学膜片之间；所述粘接层位于所述导光板靠近所述灯条一侧的侧边处。
本公开一些实施例中，所述光学膜片包括棱镜片和增光片；
所述棱镜片和所述增光片中的至少一个光学膜片的凸耳上设置有凹槽。
本公开一些实施例中，还包括：
扩散片，位于所述导光板与所述光学膜片之间；
胶框，包围所述背板、所述导光板、所述扩散片和所述光学膜片的边缘设置。
第三方面，本公开实施例提供一种显示装置，包括上述任一背光模组，以及位于所述背光模组出光侧的显示面板。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例中所需要使用的附图作简单地介绍，显而易见地，下面所介绍的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为相关技术中的背光模组的俯视结构示意图；
图2为相关技术中的背光模组的截面结构示意图之一；
图3为相关技术中的背光模组的截面结构示意图之二；
图4为本公开实施例提供的光学膜片的俯视结构示意图之一；
图5为本公开实施例提供的背光模组的截面结构示意图之一；
图6为本公开实施例提供的光学膜片的俯视结构示意图之二；
图7为本公开实施例提供的背光模组的截面结构示意图之二；
图8为本公开实施例提供的背光模组的俯视结构示意图；
图9为本公开实施例提供的背光模组的截面结构示意图之三；
图10为本公开实施例提供的背光模组的截面结构示意图之四。
具体实施方式
为使本公开的上述目的、特征和优点能够更为明显易懂，下面将结合附图和实施例对本公开做进一步说明。然而，示例实施方式能够以多种形式实 施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本公开更全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。在图中相同的附图标记表示相同或类似的结构，因而将省略对它们的重复描述。本公开中所描述的表达位置与方向的词，均是以附图为例进行的说明，但根据需要也可以做出改变，所做改变均包含在本公开保护范围内。本公开的附图仅用于示意相对位置关系不代表真实比例。
液晶显示屏作为目前主流的显示屏，具有耗电量低、体积小、辐射低等优势。而液晶显示面板为非自发光面板，需要配合背光模组使用。
液晶显示屏主要由背光模组和液晶显示面板构成。液晶显示面板本身不发光，需要依靠背光模组提供的光源实现亮度显示。
液晶显示器的显像原理，是将液晶置于两片导电玻璃之间，靠两个电极间电场的驱动，引起液晶分子扭曲的电场效应，以控制背光源透射或遮蔽功能，从而将影像显示出来。若加上彩色滤光片，则可显示彩色影像。
为了使背光模组能够提供具有足够亮度以及分布均匀的背光，会在背光模组中设置光学膜片。
图1为相关技术中背光模组的俯视结构示意图。
如图1所示，背光模组通常包括：背板01，位于背板01上的导光板02，以及位于导光板02上的光学膜片03。为了对光学膜片03进行固定，会在导光板02的边缘设置凸起021，同时在光学膜片03的相应位置设置槽口031，将光学膜片03放置于导光板02上之后，光学膜片的槽口031会卡在导光板的凸起021上，起到对光学膜片03初步定位的作用。
图2为相关技术中背光模组的截面结构示意图之一，图3为相关技术中背光模组的截面结构示意图之二。
如图2所示，导光板02在其边缘设置的凸起021与导光板02为一体结构，因此凸起021也具有导光作用，那么在实际应用中，光线被凸起021作用后向显示区AA的方向出射，而由于显示装置的边框较宽，边框04会覆盖住导光板02和光学膜片03的边缘，使得导光板02的凸起021到边框04的 边缘的距离a较大，由凸起021导出的光线会被边框遮挡，不会入射到显示区AA。
而随着显示屏的边缘设置得越来越窄，如图3所示，导光板02的凸起021到边框04的边缘的距离a也会随之减小，显示区AA的范围向边缘扩张，那么由凸起021导出的光线不再能够被边框04遮挡，向显示区AA出射，从而显示区在设置凸起021的位置的边缘会产生亮斑，影响显示效果。
有鉴于此，本公开实施例提供一种光学膜片，图4为本公开实施例提供的光学膜片的俯视结构示意图之一。
如图4所示，本公开实施例提供的光学膜片，包括：
膜片本体301和至少两个凸耳302，凸耳302连接于膜片本体301相对的两个侧边处，与膜片本体301构成一体结构。
膜片本体301和其两侧的凸耳可以一次成型进行制作，当其应用于背光模组中时，如图4所示，背板10在光学膜片设置凸耳302对应的位置也要设置槽口，以使光学膜片凸耳302搭接于背板10的槽口中，实现光学膜片的初步固定。
由于光学膜片的凸耳302设置在离显示区AA较远的背板侧边位置，因此可以很好的应用于窄边框的显示装置中，且不会在显示区AA的边缘产生亮斑。
图5为本公开实施例提供的背光模组的截面结构示意图之一。
如图5所示，由于光学膜片设置凸耳302的位置相比于膜片本体301其它位置会向背板10的侧边延伸，因此凸耳302的侧壁反射的光线会被边框的边缘遮挡而无法入射到显示区AA内，但是除凸耳302以外区域的膜片本体301的侧壁相比于凸耳302更加靠近显示区AA，因此除凸耳302以外区域的膜片本体301的侧壁反射的光线可以入射到显示区AA内，从而使得显示区AA的边缘在凸耳302设置位置处会产生暗影，影响显示效果。
为了克服上述问题，如图6所示，图6为本公开实施例提供的光学膜片的俯视结构示意图之二，本公开实施例在凸耳302与膜片本体301的连接线 处设置凹槽303，凹槽303沿着连接线延伸。
图7为本公开实施例提供的背光模组的截面结构示意图之二。
如图7所示，在凸耳302与膜片本体301的连接线处设置凹槽303之后，凹槽303的侧壁可以起到将光线反射到显示区AA的作用，增强凸耳302位置处光线的反射效果，从而提高显示区AA边缘处的亮度均匀性，避免在凸耳位置产生暗影的问题。
如图7所示，凹槽303靠近膜片本体301一侧的侧壁表面与膜片本体301对应的侧边的侧壁表面持平。凹槽303的侧壁与膜片本体301的侧壁在同一个平面上，可以使膜片本体301的侧壁与凹槽303的侧壁对光线进行反射的表面齐平，由此可以使显示区AA边缘处的亮度的均一性更好。
如图6所示，凸耳302在与膜片本体301连接处设置的凹槽303沿着凸耳302与膜片本体301连接处形成的连接线贯穿凸耳302设置。也就是说，凸耳302上设置的凹槽303贯穿凸耳302的整个宽度，这样可以使凸耳302在整个宽度的方向均形成与膜片本体的侧壁齐平的凹槽303，由此可以使显示区AA边缘处的亮度的均一性更好。
凸耳302上的凹槽303可以采用半切工艺进行制作，用刀具沿着膜片本体301的侧边对凸耳进行半切割，从而在凸耳302连接膜片本体301的位置形成凹槽303。
凹槽303的深度为膜片本体的厚度的1/3～1/2。这样既可以保证凸耳302与膜片本体301之间的连接稳定性，又可以使凹槽303的侧壁增强凸耳302位置处对光线的反射效果，提高显示区AA边缘处的亮度的均一性。
凹槽303的宽度可与所使用的刀具的厚度相同，本公开实施例中，凹槽303垂直于膜片本体侧边方向上的宽度为0.1mm～0.5mm。凹槽303的宽度过大则会导致凸耳302与膜片本体301之间的连接区域的强度削弱，凸耳302在安装过程中如果被碰撞可能会导致凸耳302断裂等问题；凹槽303的宽度过小则不利于制作。因此本公开实施例将凹槽303的宽度设置在适宜的范围之内，避免上述问题。
可选地，如图6所示，光学膜片的膜片本体301通常会设置为矩形，其连接的凸耳302一般会设置在膜片本体301相对的两个侧边处，由此可以保证光学膜片在与背板10之间进行固定时的稳定性能。膜片本体301的每个侧边可以至少连接一个凸耳302。
图8为本公开实施例提供的背光模组的俯视结构示意图。
可选地，如图8所示，凸耳302也可以设置在膜片本体301的相邻三个侧边处，且膜片本体301的每个侧边可以至少连接一个凸耳302。由此可以在两个方向上对光学膜片起到定位的作用。
在实际应用中，可以根据需要设置合适位置以及合适数量的凸耳302，本公开实施例不对其设置位置以及具体设置数量进行限定。
在背光模组中，通常会包含多种光学膜片，其中，棱镜片和增光片用于提高正视角度下的背光亮度，与此同时也会对光线的传播路径具有调整的作用，因此本公开实施例可以将棱镜片和增光片中的至少一种在其凸耳与膜片本体连接处设置凹槽，用以提高显示区边缘处的亮度的均一性。
图9为本公开实施例提供的背光模组的截面结构示意图之三。
如图8和图9所示，本公开实施例提供的背光模组，包括：背板10、导光板20、光学膜片、灯条40。
背板10位于背光模组的底部，具有支撑和承载作用。背板10通常情况下为一矩形结构，当应用于异形显示装置时，其形状适应于显示装置的形状。
背板10的材质采用铝、铁、铝合金或铁合金等，可以起到散热的作用。背板10用于固定承载光源和导光板20，也用于固定光学膜片等部件的边缘位置。
在本公开实施例中，背板10的边缘设置有多个槽口，用于搭接光学膜片的凸耳。
导光板20，设置于背板10之上，用于传导光线。
导光板20可以采用亚克力板或聚碳酸酯PC板材来制作，或者也可以采用其它具有高折射率低吸收率的透明材料进行制作，在此不做限定。导光板 20的应用原理是利用光的全反射性质，当光源出射的光线以设定角度入射到导光板中时，由于导光板具有较高的折射率，使得光线在其表面入射时发生全反射，从而使得光源出射光线可以由导光板的一侧向另一侧传播，将线光源转化为面光源，为显示面板提供背光。
在导光板的底面可以采用激光雕刻、V型十字网格雕刻或UV网版印刷技术形成导光网点。当光线射到各个导光网点时，反射光会往各个角度扩散，其中有一部分光线入射到导光板上表面时已经不再满足全反射条件，因此可以在导光板的正面射出。通过设置疏密、大小不一的导光点，可使导光板均匀出光。
灯条40，位于导光板20的入光面一侧，作为背光源。
通常情况下导光板20的一个侧面为入光面，灯条40可以设置在导光板20的入光面一侧。灯条40上会设置多个光源，在具体实施时，可以采用发光二极管(Light Emitting Diode，简称LED)作为光源，光源面向导光板20的入光面出射光线，从而使出射的光线从导光面20的入光面入射到导光板的内部。
光学膜片，位于导光板20的出光面一侧。
光学膜片包括：膜片本体301和至少两个凸耳302，光学膜片的凸耳设置于除靠近灯条以外的至少两个相对的侧边处。凸耳302连接于膜片本体301相对的两个侧边处，与膜片本体301构成一体结构。
膜片本体301和其两侧的凸耳可以一次成型进行制作，背板10上的槽口位置与光学膜片的凸耳302的位置相对应，光学膜片设置于导光板20背离背板10的一侧，光学膜片的凸耳302搭接于背板10的槽口中，实现光学膜片的初步固定。
凸耳302与膜片本体301的连接线处设置凹槽303，凹槽303的侧壁可以起到将光线反射到显示区AA的作用，增强凸耳302位置处光线的反射效果，从而提高显示区AA边缘处的亮度均匀性，避免在凸耳位置产生暗影的问题。
为了防止边缘亮线，导光板20在边缘处设置的导光网点会比较稀疏甚至 留白，此时从导光板20底部反射上来光强相对其他位置较弱。通过搭配导光板20的侧壁和光学膜片凸耳302上凹槽303的侧壁对光线的反射，来提升背光均匀性。
如图7所示，凸耳302上的凹槽303可以设置在光学膜片背离导光板20的一侧；或者，如图9所示，凸耳302上的凹槽303也可以设置在光学膜片面向导光板20的一侧。无论将凹槽303设置在哪一侧均可以起到提升显示区AA边缘处的亮度的均一性的效果。
背光模组还包括图中未示出的粘接层，该粘接层位于导光板20靠近灯条40一侧的侧边处，用于将导光板20与光学膜片粘接在一起。
粘接层可以采用双面胶带，这样通过凸耳和粘接层可以将光学膜片完全固定于背光模组中。
图10为本公开实施例提供的背光模组的截面结构示意图之四。
如图10所示，背光模组还包括：反射片50、扩散片31和胶框60。
反射片50，位于背板10和导光板20之间。
反射片50可以将导光板20背离导光面一侧出射的光线重新向出光侧反射，从而提高光源利用率。
扩散片31，位于导光板20的出光面与光学膜片之间。
扩散片31的作用是对入射光线进行散射，使经过扩散板31的光线更加均匀。扩散板31中设置有散射粒子材料，光线入射到散射粒子材料会不断发生折射与反射，从而达到将光线打散的效果，实现匀光的作用。
光学膜片通常包括设置于扩散片31背离导光板20一侧的棱镜片32和增光片33。
棱镜片32可以改变光线的出射角度，从而改变显示装置的可观看角度。
增光片33，可以提高背光模组的亮度，提高光线的利用效率，同时使出射光线具有偏振的性质，省略液晶显示面板下偏光片的使用。
在本公开实施例中，可以在棱镜片32和增光片33中的至少一个光学膜片的凸耳上设置有凹槽，例如可以只在棱镜片32的凸耳上设置凹槽，或者可 以只在增光片33的凸耳上设置凹槽，或者，如图10所示，可以在棱镜片32和增光片33的凸耳上均设置凹槽。
在实际应用中，只要可以使显示区边缘的亮度具有较好均一性即可，因此只要将棱镜片32和增光片33中的至少一个光学膜片的凸耳上设置有凹槽可以达到上述效果即可。
胶框60，包围背板10、导光板20、扩散片31和光学膜片(32和33)的边缘设置。
胶框60起到保护背板、导光板以及光学膜片边缘的作用，同时也可以将背板、导光板以及光学膜片固定在一起。除此之外，胶框的边缘还可以起到支撑显示面板的作用。
本公开实施例以侧入式背光模组结构为例，对背光模组中的各结构进行具体说时。本公开实施例提供的上述光学膜片的结构也可以应用于直下式背光模组中，在此不做限定。
基于同一发明构思，本公开实施例还提供一种显示装置，该显示装置包括上述任一背光模组，以及位于背光模组出光侧的显示面板。该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、车载显示器、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述背光模组的实施例，重复之处不再赘述。
本公开实施例提供的光学膜片、背光模组及显示装置，光学膜片包括膜片本体和至少两个凸耳，凸耳连接于膜片本体相对的两个侧边处，与膜片本体构成一体结构。背板上的槽口位置与光学膜片的凸耳的位置相对应，光学膜片的凸耳搭接于背板的槽口中，实现光学膜片的初步固定。凸耳与膜片本体的连接线处设置凹槽，凹槽的侧壁可以起到将光线反射到显示区的作用，增强凸耳位置处光线的反射效果，从而提高显示区边缘处的亮度均匀性，避免在凸耳位置产生暗影的问题。
尽管已描述了本公开的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权 利要求意欲解释为包括优选实施例以及落入本公开范围的所有变更和修改。
显然，本领域的技术人员可以对本公开实施例进行各种改动和变型而不脱离本公开实施例的精神和范围。这样，倘若本公开实施例的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (15)

  1. 一种光学膜片，包括：
    膜片本体；和
    至少两个凸耳，连接于所述膜片本体相对的两个侧边处，与所述膜片本体构成一体结构；
    所述凸耳与所述膜片本体的连接线处设置有凹槽，所述凹槽沿着所述连接线延伸。
  2. 如权利要求1所述的光学膜片，其中，所述凹槽靠近所述膜片本体一侧的侧壁表面与所述膜片本体对应的侧边的侧壁表面持平。
  3. 如权利要求1或2所述的光学膜片，其中，所述凹槽沿着所述连接线贯穿所述凸耳设置。
  4. 如权利要求1-3任一项所述的光学膜片，其中，所述膜片本体为矩形，所述膜片本体相对的两个侧边设置有所述凸耳，每个侧边至少连接一个所述凸耳。
  5. 如权利要求1-3任一项所述的光学膜片，其中，所述膜片本体为矩形，所述膜片本体的相邻三个侧边设置有所述凸耳，每个侧边至少连接一个所述凸耳。
  6. 如权利要求1-5任一项所述的光学膜片，其中，所述凹槽的深度为所述膜片本体的厚度的1/3～1/2。
  7. 如权利要求1-5任一项所述的光学膜片，其中，所述凹槽垂直于所述连接线方向上的宽度为0.1mm～0.5mm。
  8. 如权利要求1-7任一项所述的光学膜片，其中，所述光学膜片为棱镜片或增光片。
  9. 一种背光模组，包括：背板和权利要求1-8任一项所述的光学膜片；其中，
    所述背板的边缘对应于所述光学膜片的凸耳处设置有切口，所述光学膜 片凸耳搭接于所述背板的切口中。
  10. 如权利要求9所述的背光模组，还包括：
    导光板，位于所述背板上；所述导光板包括入光面和出光面，所述光学膜片位于所述导光板的出光面一侧；
    灯条，位于所述导光板的入光面一侧；
    所述光学膜片的凸耳设置于除靠近所述灯条以外的至少两个相对的侧边处。
  11. 如权利要求10所述的背光模组，其中，所述凸耳上的凹槽位于面向所述导光板的一侧；或者，所述凸耳上的凹槽位于背离所述导光板的一侧。
  12. 如权利要求10所述的背光模组，还包括：
    粘接层，位于所述导光板与所述光学膜片之间；所述粘接层位于所述导光板靠近所述灯条一侧的侧边处。
  13. 如权利要求9-12任一项所述的背光模组，其中，所述光学膜片包括棱镜片和增光片；
    所述棱镜片和所述增光片中的至少一个光学膜片的凸耳上设置有凹槽。
  14. 如权利要求10-12任一项所述的背光模组，还包括：
    扩散片，位于所述导光板与所述光学膜片之间；
    胶框，包围所述背板、所述导光板、所述扩散片和所述光学膜片的边缘设置。
  15. 一种显示装置，包括如权利要求9-14任一项所述的背光模组，以及位于所述背光模组出光侧的显示面板。
PCT/CN2021/075780 2021-02-07 2021-02-07 光学膜片、背光模组及显示装置 WO2022165798A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US18/272,568 US20240069385A1 (en) 2021-02-07 2021-02-07 Optical membrane, backlight module and display device
CN202180000201.XA CN115176197B (zh) 2021-02-07 2021-02-07 光学膜片、背光模组及显示装置
PCT/CN2021/075780 WO2022165798A1 (zh) 2021-02-07 2021-02-07 光学膜片、背光模组及显示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/075780 WO2022165798A1 (zh) 2021-02-07 2021-02-07 光学膜片、背光模组及显示装置

Publications (1)

Publication Number Publication Date
WO2022165798A1 true WO2022165798A1 (zh) 2022-08-11

Family

ID=82741914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/075780 WO2022165798A1 (zh) 2021-02-07 2021-02-07 光学膜片、背光模组及显示装置

Country Status (3)

Country Link
US (1) US20240069385A1 (zh)
CN (1) CN115176197B (zh)
WO (1) WO2022165798A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115167036A (zh) * 2022-09-08 2022-10-11 惠科股份有限公司 背光模组和显示装置
US11815710B1 (en) 2023-06-19 2023-11-14 HKC Corporation Limited Backlight module and display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203052433U (zh) * 2013-01-31 2013-07-10 青岛海信电器股份有限公司 背光模组、具有该背光模组的电视机及显示装置
CN103424931A (zh) * 2013-08-06 2013-12-04 宁波市能捷电子有限公司 一种背光模组
CN103697414A (zh) * 2013-12-20 2014-04-02 深圳市华星光电技术有限公司 导光板、导光板制造方法及背光模块
KR20170035059A (ko) * 2015-09-22 2017-03-30 엘지디스플레이 주식회사 광학시트와 이를 포함하는 액정표시장치
CN107726142A (zh) * 2017-10-20 2018-02-23 友达光电（苏州）有限公司 背光模块及显示装置
CN210465931U (zh) * 2019-11-08 2020-05-05 合肥鑫晟光电科技有限公司 背光模组、显示面板及显示装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101003647B1 (ko) * 2004-05-29 2010-12-23 엘지디스플레이 주식회사 광학시트의 체결구조 및 이를 채용한 액정표시장치
KR101824603B1 (ko) * 2010-11-26 2018-02-02 엘지디스플레이 주식회사 백라이트 유닛 및 이를 구비한 액정표시장치
US9720162B2 (en) * 2011-10-28 2017-08-01 Sharp Kabushiki Kaisha Optical sheets formed with two-part protrusions on its edges
CN202501341U (zh) * 2012-03-30 2012-10-24 青岛海信电器股份有限公司 背光模组及电视机
US9810834B2 (en) * 2013-11-25 2017-11-07 Sakai Display Products Corporation Optical sheet holding structure and display apparatus
US9952458B2 (en) * 2014-03-27 2018-04-24 Sakai Display Products Corporation Display apparatus
KR102170995B1 (ko) * 2014-05-26 2020-10-28 엘지디스플레이 주식회사 바텀커버 및 이를 포함하는 백라이트 유닛
CN204313140U (zh) * 2015-01-12 2015-05-06 昆山龙腾光电有限公司 背光模组及液晶显示器
CN204806113U (zh) * 2015-07-15 2015-11-25 北京京东方茶谷电子有限公司 一种背光模组及显示装置
JP6471231B2 (ja) * 2015-07-28 2019-02-13 堺ディスプレイプロダクト株式会社 表示装置
US10345513B2 (en) * 2015-08-31 2019-07-09 Sakai Display Products Corporation Display device
WO2017037856A1 (ja) * 2015-08-31 2017-03-09 堺ディスプレイプロダクト株式会社 表示装置
KR102429136B1 (ko) * 2015-10-30 2022-08-03 엘지디스플레이 주식회사 디스플레이 장치
CN205067925U (zh) * 2015-11-05 2016-03-02 京东方光科技有限公司 一种背光模组和显示装置
KR102511041B1 (ko) * 2015-12-31 2023-03-16 엘지디스플레이 주식회사 백라이트 유닛 및 그를 가지는 액정 표시 모듈
KR102658217B1 (ko) * 2016-12-29 2024-04-16 엘지디스플레이 주식회사 백라이트 유닛 및 이를 포함하는 액정표시장치
CN206708858U (zh) * 2017-05-10 2017-12-05 合肥京东方显示光源有限公司 背光模组和显示装置
CN107728380B (zh) * 2017-11-20 2024-04-30 北京小米移动软件有限公司 背光模组及显示装置
CN110737123B (zh) * 2018-07-18 2022-06-28 群创光电股份有限公司 显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203052433U (zh) * 2013-01-31 2013-07-10 青岛海信电器股份有限公司 背光模组、具有该背光模组的电视机及显示装置
CN103424931A (zh) * 2013-08-06 2013-12-04 宁波市能捷电子有限公司 一种背光模组
CN103697414A (zh) * 2013-12-20 2014-04-02 深圳市华星光电技术有限公司 导光板、导光板制造方法及背光模块
KR20170035059A (ko) * 2015-09-22 2017-03-30 엘지디스플레이 주식회사 광학시트와 이를 포함하는 액정표시장치
CN107726142A (zh) * 2017-10-20 2018-02-23 友达光电（苏州）有限公司 背光模块及显示装置
CN210465931U (zh) * 2019-11-08 2020-05-05 合肥鑫晟光电科技有限公司 背光模组、显示面板及显示装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115167036A (zh) * 2022-09-08 2022-10-11 惠科股份有限公司 背光模组和显示装置
CN115167036B (zh) * 2022-09-08 2022-12-23 惠科股份有限公司 背光模组和显示装置
US11815710B1 (en) 2023-06-19 2023-11-14 HKC Corporation Limited Backlight module and display device

Also Published As

Publication number Publication date
US20240069385A1 (en) 2024-02-29
CN115176197A (zh) 2022-10-11
CN115176197B (zh) 2023-10-17

Similar Documents

Publication Publication Date Title
KR101807442B1 (ko) 백라이트 모듈 및 상기 백라이트 모듈을 이용한 액정 디스플레이 장치
US20060193148A1 (en) Light-emitting diode backlight assembly and liquid crystal display device using the same
CN100564994C (zh) 面状光源装置
KR20160022224A (ko) 도광판 및 이를 포함하는 백라이트 유닛
EP2696234A1 (en) Backlight device
CN111913320A (zh) 一种背光模组以及显示装置
US7140743B2 (en) Direct backlight module
TWI403802B (zh) 具有改良光導板之背光組件及具有該背光組件之顯示器裝置
WO2016194716A1 (ja) エッジライト型バックライト装置及び液晶表示装置
WO2020237956A1 (zh) 直下式背光模组和液晶显示装置
WO2020124891A1 (zh) 背光模组及显示装置
WO2022165798A1 (zh) 光学膜片、背光模组及显示装置
WO2021190414A1 (zh) 一种显示装置
CN211577620U (zh) 一种显示装置
KR20100049339A (ko) 광학 부재 및 그를 포함하는 표시 장치
KR100880217B1 (ko) 백라이트
WO2020107897A1 (zh) 一种背光模组及其显示装置
KR101571344B1 (ko) 바텀 케이스 및 이를 포함하는 백라이트 어셈블리
KR102030412B1 (ko) 라운드 다각패턴을 가진 도광판 및 이를 구비한 액정표시소자
KR20120068498A (ko) 도광판, 이를 구비한 백라이트 유닛 및 이들을 포함하는 액정표시장치
KR20120067205A (ko) 백라이트 유닛, 이를 구비한 액정표시장치 및 그 조립방법
KR101832483B1 (ko) 백라이트 유닛 및 이를 구비한 액정표시장치
CN210123507U (zh) 一种背光模组以及显示装置
KR20120075135A (ko) 차광테이프와 이를 적용한 백라이트 유닛 및 이를 구비한 액정표시장치
CN110018594B (zh) 背光模组及显示模组

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21923809

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 18272568

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 16/11/2023)

122 Ep: pct application non-entry in european phase

Ref document number: 21923809

Country of ref document: EP

Kind code of ref document: A1