WO2020248422A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2020248422A1
WO2020248422A1 PCT/CN2019/106725 CN2019106725W WO2020248422A1 WO 2020248422 A1 WO2020248422 A1 WO 2020248422A1 CN 2019106725 W CN2019106725 W CN 2019106725W WO 2020248422 A1 WO2020248422 A1 WO 2020248422A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
protrusion
light guide
optical film
plane
Prior art date
Application number
PCT/CN2019/106725
Other languages
English (en)
French (fr)
Inventor
周政
Original Assignee
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/613,432 priority Critical patent/US11256019B2/en
Publication of WO2020248422A1 publication Critical patent/WO2020248422A1/zh

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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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • 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

Definitions

  • This application relates to the field of display, and in particular to a backlight module and a display device.
  • LCD Liquid Crystal Display
  • vehicle-mounted displays tend to be designed with narrow bezels.
  • the light guide plate in the backlight module is provided with steps to fix the corresponding optical film, and the distance between the steps and the display area of the display is small, resulting in local bright spots in the display under large viewing angles , Bright lines and other technical issues, which affect the quality of the display.
  • the present application provides a backlight module and a display device to solve technical problems such as bright spots or bright lines on the display device under a large viewing angle.
  • This application proposes a backlight module, which includes a substrate, a light source on the substrate, and a light guide plate on one side of the light source;
  • the light guide plate includes a first area located at an edge area of the light guide plate;
  • At least one protrusion is provided in the first area
  • the thickness of the protrusion gradually increases.
  • the light guide plate at least includes a first protrusion and a second protrusion on the light emitting surface of the light guide plate;
  • the maximum thickness of the first protrusion is smaller than the minimum thickness of the second protrusion
  • the first protrusion is arranged close to the light source, and the second protrusion is arranged away from the light source.
  • the first protrusion includes a first plane away from the light exit surface of the light guide plate
  • the second protrusion includes a second plane away from the light exit surface of the light guide plate
  • the first plane is connected to the second plane through a first inclined plane.
  • the first plane and the second plane are parallel to the light emitting surface of the light guide plate.
  • the first inclined surface and the light emitting surface of the light guide plate are arranged at a first angle
  • the first included angle is 30°-60°.
  • the backlight module further includes at least one first optical film on the light emitting surface of the light guide plate;
  • the first optical film covers an area of the light guide plate not covered by the protrusions, and the thickness of the first optical film is the same as the thickness of the first protrusions.
  • the display module further includes at least one second optical film located on the first optical film;
  • the second optical film covers the area of the light guide plate that is not covered by the second protrusions, and the sum of the thickness of the first optical film and the thickness of the second optical film is equal to the The thickness of the second protrusion is the same.
  • the first optical film is bonded to the light guide plate through a first adhesive layer
  • the second optical film is bonded to the first protrusion through a second adhesive layer.
  • the first adhesive layer and the second adhesive layer include double-sided tape or glue.
  • the light guide plate further includes a third protrusion arranged away from the first protrusion
  • the third protrusion includes a third plane parallel to the light exit surface of the light guide plate
  • the third plane is connected to the second plane through a second inclined plane
  • the second inclined surface is parallel to the first inclined surface.
  • This application also proposes a display device, which includes a backlight module and a display module on the backlight module;
  • the display device includes a display area and a non-display area located at the periphery of the display area, and the first area is located in the non-display area;
  • the backlight module includes a substrate, a light source on the substrate, and a light guide plate on one side of the light source;
  • the light guide plate includes a first area located at an edge area of the light guide plate;
  • At least one protrusion is provided in the first area
  • the thickness of the protrusion gradually increases.
  • the light guide plate at least includes a first protrusion and a second protrusion on the light exit surface of the light guide plate;
  • the maximum thickness of the first protrusion is smaller than the minimum thickness of the second protrusion
  • the first protrusion is arranged close to the light source, and the second protrusion is arranged away from the light source.
  • the first protrusion includes a first plane away from the light exit surface of the light guide plate
  • the second protrusion includes a second plane away from the light exit surface of the light guide plate
  • the first plane is connected to the second plane through a first inclined plane.
  • the first plane and the second plane are parallel to the light emitting surface of the light guide plate.
  • the first inclined surface and the light emitting surface of the light guide plate are arranged at a first angle
  • the first included angle is 30°-60°.
  • the backlight module further includes at least one first optical film on the light emitting surface of the light guide plate;
  • the first optical film covers an area of the light guide plate not covered by the protrusions, and the thickness of the first optical film is the same as the thickness of the first protrusions.
  • the display module further includes at least one second optical film located on the first optical film;
  • the second optical film covers the area of the light guide plate that is not covered by the second protrusions, and the sum of the thickness of the first optical film and the thickness of the second optical film is The thickness of the second protrusion is the same.
  • the first optical film is bonded to the light guide plate through a first adhesive layer
  • the second optical film is bonded to the first protrusion through a second adhesive layer.
  • the first adhesive layer and the second adhesive layer include double-sided tape or glue.
  • the light guide plate further includes a third protrusion arranged away from the first protrusion
  • the third protrusion includes a third plane parallel to the light exit surface of the light guide plate
  • the third plane is connected to the second plane through a second inclined plane
  • the second inclined surface is parallel to the first inclined surface.
  • the bevel treatment is performed at the junction of adjacent protrusions on the light guide plate to avoid specular reflection when the light source passes through the junction, and eliminates local bright spots or bright lines on the display corresponding to the backlight module under large viewing angles.
  • Technical problems have improved the quality of products.
  • Figure 1 is the first structure diagram of the backlight module of this application.
  • Figure 2 is the first side view of the light guide plate in the backlight module of this application.
  • 3 is a second side view of the light guide plate in the backlight module of the application.
  • Fig. 4 is a second structure diagram of the backlight module of this application.
  • Figure 5 is a side view of Figure 4.
  • Fig. 6 is a third structural diagram of the backlight module of this application.
  • Figure 7 is a side view of Figure 6;
  • FIG. 8 is a second side view of the light guide plate in the backlight module of this application.
  • Figure 9 is a top view of Figure 8.
  • FIG. 10 is a structural diagram of a display device of this application.
  • FIG. 1 is the first structure diagram of the backlight module of this application.
  • the backlight module 100 includes a substrate, a light source 10 on the substrate, and a light guide plate 20 on one side of the light source 10.
  • the substrate may be made of sheet metal material.
  • the light source 10 may be an LED lamp.
  • the backlight module 100 of the present application is provided with a plurality of LED lamps, and the distance between two adjacent LED lamps is equal.
  • the number of LED lights is not specifically limited in this application.
  • the light guide plate 20 is located on the sheet metal substrate and is arranged on the same plane as the light source 10.
  • the light guide plate 20 is arranged on the entire surface of the backlight module 100.
  • the light guide plate 20 includes a first area 21 and a second area 22.
  • the first area 21 corresponds to a non-display area in the display corresponding to the backlight module 100
  • the second area 22 corresponds to a display area in the display corresponding to the backlight module 100.
  • the light guide plate 20 further includes at least one protrusion 30 located in the first area 21.
  • the protrusion 30 is integrally provided with the light guide plate 20.
  • the protrusion 30 is used to fix the optical film on the light guide plate 20.
  • the side surface of the protrusion 30 and the side surface of the light guide plate 20 are on the same plane.
  • the first area 21 is arranged close to the edge of the light guide plate 20, and can be arranged at any boundary of the light guide plate 20, which is not specifically limited in this application.
  • the thickness of the protrusion 30 gradually increases.
  • the light guide plate 20 at least includes a first protrusion 31 and a second protrusion 32 on the light exit surface 23 of the light guide plate.
  • the first protrusion 31 and the second protrusion 32 are arranged in steps.
  • the maximum thickness of the first protrusion 31 is smaller than the minimum thickness of the second protrusion 32.
  • the first protrusion 31 is disposed close to the light source 10, and the second protrusion 32 is disposed away from the light source 10.
  • FIG. 2 is a first side view of the light guide plate in the backlight module of the application.
  • the first protrusion 31 includes a first flat surface 311 away from the light exit surface 23 of the light guide plate.
  • the second protrusion 32 includes a second flat surface 321 away from the light exit surface 23 of the light guide plate.
  • the first plane 311 is connected to the second plane 321 through a first inclined plane 34.
  • first plane 311 and the second plane 321 may be arranged in parallel with the light-emitting surface 23 of the light guide plate.
  • FIG. 3 is a second side view of the light guide plate in the backlight module of this application.
  • the first plane 311 and the second plane 321 may be arranged non-parallel to the light emitting surface 23 of the light guide plate.
  • the first plane 311 and the second plane 321 may be arranged at an inclination angle.
  • the thickness of the first protrusion 31 and the second protrusion 32 may gradually increase.
  • the included angle between the first plane 311 and the light exit surface 23 of the light guide plate may be smaller than the included angle between the second plane 321 and the light exit surface 23 of the light guide plate.
  • the thickness of the first protrusion 31 and the second protrusion 32 may be linearly increased, and the specific linear formula may be obtained according to specific experiments, which will not be described in detail in this application.
  • the first inclined surface 34 and the light-emitting surface 23 of the light guide plate are arranged at a first included angle a.
  • the first included angle a may be 30°-60°.
  • the incident light emitted by the LED lamp enters the light guide plate 20 and is reflected to the light exit surface of the light guide plate 20 through the reflective layer and the dots at the bottom of the light guide plate 20.
  • the junction in the prior art is connected at a right angle.
  • the light passes through the vertical plane, it is prone to specular emission, resulting in large viewing angles.
  • the display corresponding to the backlight module 100 of the present application local bright spots or bright lines appear.
  • the interface between the first protrusion 31 and the second protrusion 32 is set from a vertical plane to an inclined plane.
  • the specular reflection effect disappears, which eliminates the large viewing angle of the backlight of the application.
  • the display corresponding to the module 100 has a technical problem of local bright spots or bright lines.
  • the backlight module 100 further includes at least one optical film on the light guide plate 20.
  • FIG. 4 is a second structure diagram of the backlight module of this application.
  • the backlight module 100 further includes at least one first optical film 41 located on the light exit surface 23 of the light guide plate.
  • the first optical film 41 covers an area of the light guide plate 20 that is not covered by the protrusion 30.
  • FIG. 5 is a side view of FIG. 4.
  • the thickness of the first optical film 41 is the same as the thickness of the first protrusion 31.
  • the thickness and number of the first optical film 41 are not specifically limited in this application. It is only necessary to ensure that the thickness of the first optical film 41 is the same as the thickness of the first protrusion 31.
  • the first protrusion 31 and the first optical film 41 may be connected by a slope.
  • the inclination angle of the inclined surface may specifically refer to the first included angle a.
  • the connection between the first optical film 41 and the first protrusion 31 is provided with a slope.
  • the first optical film 41 may be one of a brightness enhancement film, a diffusion film or a prism film.
  • the first optical film 41 is bonded to the light guide plate 20 through a first adhesive layer to prevent the first optical film 41 from being displaced.
  • the first adhesive layer may be double-sided tape or glue, etc., which is not specifically limited in this application.
  • FIG. 6 is a third structure diagram of the backlight module of this application.
  • the backlight module 100 further includes at least one second optical film 42 located on the first optical film 41.
  • the second optical film 42 covers the area of the light guide plate 20 that is not covered by the second protrusion 32.
  • FIG. 7 is a side view of FIG. 6.
  • the sum of the thickness of the first optical film 41 and the thickness of the second optical film 42 is the same as the thickness of the second protrusion 32.
  • the thickness of the second optical film 42 is the same as the thickness difference between the first protrusion 31 and the second protrusion 32.
  • the thickness and number of the second optical film 42 are not specifically limited in this application. It is sufficient to ensure that the surface of the second optical film 42 away from the light guide plate 20 and the second plane 321 of the second protrusion 32 are located on the same plane.
  • the second protrusion 32 and the second optical film 42 are connected by the first inclined surface 34.
  • the connection between the second optical film 42 and the second protrusion 32 is provided with a slope, and the specific inclination angle is The inclination angle of the first inclined surface 34 can be referred to.
  • the second optical film 42 may be one of a brightness enhancement film, a diffusion film or a prism film.
  • the second optical film 42 is bonded to the second protrusion 32 of the light guide plate 20 through a second adhesive layer to prevent the second optical film 42 from being damaged. Shift.
  • the second adhesive layer may be double-sided tape or glue, etc., which is not specifically limited in this application.
  • FIG. 8 is a second side view of the light guide plate in the backlight module of this application.
  • the light guide plate 20 further includes a third protrusion 33 disposed away from the first protrusion 31.
  • the minimum thickness of the third protrusion 33 is smaller than the maximum thickness of the second protrusion 32.
  • the third protrusion 33 may include a third plane 331 parallel to the light exit surface 23 of the light guide plate.
  • the third plane 331 may be arranged non-parallel to the light exit surface 23 of the light guide plate.
  • the first plane 311 or the second plane 321 in FIG. 3 has a certain inclination angle.
  • the thickness of the third protrusion 33 is linearly increased.
  • the light guide plate 20 further includes a second inclined surface 35 connecting the third plane 331 and the second plane 321.
  • the second inclined surface 35 may be arranged parallel to the first inclined surface 34.
  • the second inclined surface 35 may be arranged non-parallel to the first inclined surface 34.
  • FIG. 9 is a top view of FIG. 8.
  • the backlight module 100 further includes at least one third optical film 43 on the second optical film 42.
  • the third optical film 43 covers the area of the light guide plate 20 that is not covered by the third protrusion 33.
  • the sum of the thickness of the first optical film 41, the second optical film 42, and the third optical film 43 is the same as the thickness of the third protrusion 33 .
  • the thickness of the third optical film 43 is the same as the thickness difference between the third protrusion 33 and the second protrusion 32.
  • the thickness and number of the third optical film 43 are not specifically limited in this application. It is sufficient to ensure that the surface of the third optical film 43 away from the light guide plate 20 and the third plane 331 of the third protrusion 33 are located on the same plane.
  • the third protrusion 33 and the third optical film 43 are connected by the second inclined surface 35.
  • the connection between the third optical film 43 and the third protrusion 33 is provided with an inclined plane, and the specific inclination angle is The inclination angle of the second inclined surface 35 can be referred to.
  • the third optical film 43 may be one of a brightness enhancement film, a diffusion film, or a prism film.
  • the first optical film 41, the second optical film 42 and the third optical film 43 are different.
  • the third optical film 43 is bonded to the third protrusion 33 of the light guide plate 20 through a third adhesive layer to prevent the third optical film 43 from being damaged. Shift.
  • the third adhesive layer may be double-sided tape or glue, etc., which is not specifically limited in this application.
  • the backlight module 100 may also include fourth protrusions 30, fifth protrusions 30, etc. on the light guide plate 20, and the specific number is not limited in this application.
  • an optical film corresponds to one of the protrusions 30.
  • the number of the protrusions 30 is greater than the type of the optical film, one type of optical film may correspond to each of the protrusions 30, and the specific arrangement method is not limited in this application.
  • FIG. 10 is a structural diagram of a display device of this application.
  • the display device 200 includes a backlight module and a display module on the backlight module.
  • the structure and working principle of the backlight module are the same as or similar to the above-mentioned embodiments, and will not be repeated in this application.
  • the display device 200 includes a display area 201 and a non-display area 202 located at the periphery of the display area.
  • the first area 21 of the light guide plate 20 is located in the non-display area 202.
  • the protrusion 30 in the light guide plate 20 is located in the non-display area 202 of the display device 100.
  • the present application provides a backlight module and a display device.
  • the backlight module includes a substrate, a light source on the substrate, and a light guide plate on one side of the light source; the light guide plate includes an edge area of the light guide plate.
  • the first area; the first area is provided with at least one protrusion; in the direction from the light source to the light guide plate, the thickness of the protrusion gradually increases.
  • the bevel treatment is performed at the junction of adjacent protrusions on the light guide plate to avoid specular reflection when the light source passes through the junction, and eliminates local bright spots or bright lines on the display corresponding to the backlight module under large viewing angles.
  • Technical problems have improved the quality of products.

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

Abstract

一种背光模组（100）及显示装置（200），背光模组（100）包括衬底、位于衬底上的光源（10）、及位于光源（10）一侧的导光板（20）；导光板（20）包括位于导光板（20）边缘区域的第一区（21）；第一区（21）内设置有至少一凸起（30）；在光源（10）至导光板（20）的方向上，凸起（30）的厚度逐渐增加，消除了大视角下背光模组（100）对应的显示装置（200）出现的局部亮点或亮线。

Description

背光模组及显示装置 技术领域
本申请涉及显示领域，尤其涉及一种背光模组及显示装置。
 背景技术
液晶显示器（Liquid Crystal Display，LCD）是目前市场上应用最为广泛的显示产品，尤其应用于车载显示屏。
随着车载液晶显示器的发展，车载显示器趋向于窄边框的设计。对于现有窄边框的显示器中，其背光模组中的导光板通过设置台阶以固定对应的光学膜片，而该台阶与显示器的显示区间距较小，导致在大视角下该显示器出现局部亮点、亮线等技术问题，影响显示器的品质。
因此，亟需一种背光模组以解决上述技术问题。
 技术问题
本申请提供一种背光模组及显示装置，以解决在大视角下显示装置出现亮点或亮线等技术问题。
 技术解决方案
本申请提出了一种背光模组，其包括衬底、位于所述衬底上的光源、及位于所述光源一侧的导光板；
所述导光板包括位于所述导光板边缘区域的第一区；
所述第一区内设置有至少一凸起；
其中，在所述光源至所述导光板的方向上，所述凸起的厚度逐渐增加。
在本申请的背光模组中，所述导光板至少包括位于所述导光板出光面上的第一凸起及第二凸起；
所述第一凸起的最大厚度小于所述第二凸起的最小厚度；
其中，所述第一凸起靠近所述光源设置，所述第二凸起远离所述光源设置。
在本申请的背光模组中，
所述第一凸起包括远离所述导光板出光面的第一平面；
所述第二凸起包括远离所述导光板出光面的第二平面；
所述第一平面通过第一斜面与所述第二平面连接。
在本申请的背光模组中，
所述第一平面及所述第二平面与所述导光板出光面平行。
在本申请的背光模组中，
所述第一斜面与所述导光板出光面呈第一夹角设置；
所述第一夹角为30°~60°。
在本申请的背光模组中，所述背光模组还包括位于所述导光板出光面上的至少一第一光学膜片；
所述第一光学膜片覆盖所述导光板中未被所述凸起所覆盖的区域，所述第一光学膜片的厚度与所述第一凸起的厚度相同。
在本申请的背光模组中，所述显示模组还包括位于所述第一光学膜片上的至少一第二光学膜片；
所述第二光学膜片覆盖所述导光板中未被所述第二凸起所覆盖的区域，所述第一光学膜片的厚度与所述第二光学膜片的厚度之和与所述第二凸起的厚度相同。
在本申请的背光模组中，
所述第一光学膜片通过第一粘接层与所述导光板粘接，所述第二光学膜片通过第二粘接层与所述第一凸起粘接。
在本申请的背光模组中，
所述第一粘接层和所述第二粘接层包括双面胶或胶水。
在本申请的背光模组中，
所述导光板还包括远离所述第一凸起设置的第三凸起；
所述第三凸起包括与所述导光板出光面平行的第三平面；
所述第三平面通过第二斜面与第二平面连接；
所述第二斜面与第一斜面平行。
本申请还提出了一种显示装置，其包括背光模组及位于所述背光模组上的显示模组；
所述显示装置包括显示区域和位于所述显示区域外围的非显示区域，所述第一区位于所述非显示区域内；
背光模组，其中，包括衬底、位于所述衬底上的光源、及位于所述光源一侧的导光板；
所述导光板包括位于所述导光板边缘区域的第一区；
所述第一区内设置有至少一凸起；
其中，在所述光源至所述导光板的方向上，所述凸起的厚度逐渐增加。
在本申请的显示装置中，
所述导光板至少包括位于所述导光板出光面上的第一凸起及第二凸起；
所述第一凸起的最大厚度小于所述第二凸起的最小厚度；
其中，所述第一凸起靠近所述光源设置，所述第二凸起远离所述光源设置。
在本申请的显示装置中，
所述第一凸起包括远离所述导光板出光面的第一平面；
所述第二凸起包括远离所述导光板出光面的第二平面；
所述第一平面通过第一斜面与所述第二平面连接。
在本申请的显示装置中，
所述第一平面及所述第二平面与所述导光板出光面平行。
在本申请的显示装置中，
所述第一斜面与所述导光板出光面呈第一夹角设置；
所述第一夹角为30°~60°。
在本申请的显示装置中，所述背光模组还包括位于所述导光板出光面上的至少一第一光学膜片；
所述第一光学膜片覆盖所述导光板中未被所述凸起所覆盖的区域，所述第一光学膜片的厚度与所述第一凸起的厚度相同。
在本申请的显示装置中，所述显示模组还包括位于所述第一光学膜片上的至少一第二光学膜片；
所述第二光学膜片覆盖所述导光板中未被所述第二凸起所覆盖的区域，所述第一光学膜片的厚度与所述第二光学膜片的厚度之和与所述第二凸起的厚度相同。
在本申请的显示装置中，
所述第一光学膜片通过第一粘接层与所述导光板粘接，所述第二光学膜片通过第二粘接层与所述第一凸起粘接。
在本申请的显示装置中，
所述第一粘接层和所述第二粘接层包括双面胶或胶水。
在本申请的显示装置中，
所述导光板还包括远离所述第一凸起设置的第三凸起；
所述第三凸起包括与所述导光板出光面平行的第三平面；
所述第三平面通过第二斜面与第二平面连接；
所述第二斜面与第一斜面平行。
 有益效果
本申请通过在导光板上的相邻凸起的衔接处作斜面处理，避免了光源通过该衔接处时发生镜面反射，消除了大视角下该背光模组对应的显示器出现局部亮点或亮线等技术问题，提升了产品的品质。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请背光模组的第一种结构图；
图2为本申请背光模组中导光板的第一种侧视图；
图3为本申请背光模组中导光板的第二种侧视图；
图4为本申请背光模组的第二种结构图；
图5为图4的侧视图；
图6为本申请背光模组的第三种结构图；
图7为图6的侧视图；
图8为本申请背光模组中导光板的第二种侧视图；
图9为图8的俯视图；
图10为本申请显示装置的结构图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
请参阅图1，图1为本申请背光模组的第一种结构图。
所述背光模组100包括衬底、位于所述衬底上的光源10、及位于所述光源10一侧的导光板20。
在一种实施例中，所述衬底可以为由钣金材料构成。
在一种实施例中，所述光源10可以为LED灯。本申请的背光模组100设置有多个LED灯，相邻两个所述LED灯的间距相等。LED灯的数量本申请不作具体限制。
所述导光板20位于该钣金衬底上，且与所述光源10在同一平面设置。所述导光板20在所述背光模组100中整面设置。
在一种实施例中，所述导光板20包括第一区21和第二区22。
所述第一区21与所述背光模组100对应显示器中的非显示区域对应，所述第二区22与所述背光模组100对应显示器中的显示区域对应。
所述导光板20还包括位于所述第一区21内的至少一凸起30。所述凸起30与所述导光板20一体设置。在一种实施例中，所述凸起30用于固定位于所述导光板20上的光学膜片。
所述凸起30的侧面与所述导光板20的侧面在同一平面上。
所述第一区21靠近所述导光板20边缘设置，可以设置于所述导光板20任一边界处，本申请不作具体限制。
在一种实施例中，在所述光源10至所述导光板20的方向上，所述凸起30的厚度逐渐增加。
请参阅图1，所述导光板20至少包括位于所述导光板出光面23上的第一凸起31及第二凸起32。所述第一凸起31及所述第二凸起32呈阶梯设置。
在一种实施例中，所述第一凸起31的最大厚度小于所述第二凸起32的最小厚度。
在一种实施例中，所述第一凸起31靠近所述光源10设置，所述第二凸起32远离所述光源10设置。
请参阅图2，图2为本申请背光模组中导光板的第一种侧视图。
所述第一凸起31包括远离导光板出光面23的第一平面311。
所述第二凸起32包括远离导光板出光面23的第二平面321。
所述第一平面311通过第一斜面34与所述第二平面321连接。
在一种实施例中，所述第一平面311及所述第二平面321可以与所述导光板出光面23平行设置。
请参阅图3，图3为本申请背光模组中导光板的第二种侧视图。
所述第一平面311与所述第二平面321可以与所述导光板出光面23非平行设置。所述第一平面311与所述第二平面321可以以一种倾斜角度进行设置。
在一种实施例中，在所述光源10至所述导光板20的方向上，所述第一凸起31及所述第二凸起32的厚度可以逐渐增加。所述第一平面311与所述导光板出光面23的的夹角可以小于所述第二平面321与所述导光板出光面23的夹角。
在一种实施例中，所述第一凸起31及所述第二凸起32的厚度可以线性增加，具体线性公式可以根据具体实验获得，本申请不作详细介绍。
请参阅图2~图3，所述第一斜面34与所述导光板出光面23呈第一夹角a设置。
在一种实施例中，所述第一夹角a可以为30°~60°。
下面以所述第一夹角a为45°为例进行说明。
LED灯发出的入射光线进入所述导光板20内，经所述导光板20底层的反射层及网点反射至所述导光板20的出光面。当部分光线经过所述第一凸起31及所述第二凸起32的交界处时，现有技术的交界处为直角衔接，光线经过该垂直面时，易发生镜面发射，导致在大视角下观测本申请背光模组100对应的显示器时，出现局部亮点或亮线。本申请通过将所述第一凸起31及所述第二凸起32衔接面从垂直面设置成斜面，当入射光线经过该斜面时，镜面反射效应消失，消除了大视角下观测本申请背光模组100对应的显示器时出现局部亮点或亮线的技术问题。
所述背光模组100还包括位于所述导光板20上的至少一光学膜片。
请参阅图4，图4为本申请背光模组的第二种结构图。
所述背光模组100还包括位于所述导光板出光面23上的至少一第一光学膜片41。所述第一光学膜片41覆盖所述导光板20中未被所述凸起30所覆盖的区域。
请参阅图5，图5为图4的侧视图。
所述第一光学膜片41的厚度与所述第一凸起31的厚度相同。
在一种实施例中，所述第一光学膜片41的厚度及数量本申请不作具体限制。只要保证所述第一光学膜片41的厚度与所述第一凸起31的厚度相同即可。
在一种实施例中，所述第一凸起31与所述第一光学膜片41可以通过斜面进行衔接。该斜面的倾角具体可以参考所述第一夹角a。而为了保证所述第一光学膜片41与所述第一凸起31衔接的有效性，所述第一光学膜片41与所述第一凸起31的衔接处作斜面设置。
在一种实施例中，所述第一光学膜片41可以为增光片、扩散片或棱镜膜等中的一种。
在一种实施例中，所述第一光学膜片41通过第一粘接层与所述导光板20粘接，以防止所述第一光学膜片41的移位。
在一种实施例中，所述第一粘接层可以为双面胶或胶水等，本申请不作具体限制。
请参阅图6，图6为本申请背光模组的第三种结构图。
所述背光模组100还包括位于所述第一光学膜片41上的至少一第二光学膜片42。所述第二光学膜片42覆盖所述导光板20中未被所述第二凸起32所覆盖的区域。
请参阅图7，图7为图6的侧视图。
所述第一光学膜片41的厚度与所述第二光学膜片42的厚度之和与所述第二凸起32的厚度相同。所述第二光学膜片42的厚度与所述第一凸起31与所述第二凸起32的厚度差相同。
在一种实施例中，所述第二光学膜片42的厚度及数量本申请不作具体限制。保证所述第二光学膜片42远离所述导光板20的表面与所述第二凸起32中所述第二平面321位于同一平面即可。
在一种实施例中，所述第二凸起32与所述第二光学膜片42通过所述第一斜面34进行衔接。而为了保证所述第二光学膜片42与所述第二凸起32衔接的有效性，所述第二光学膜片42与所述第二凸起32的衔接处作斜面设置，具体倾斜角度可以参照所述第一斜面34的倾斜角度。
在一种实施例中，所述第二光学膜片42可以为增光片、扩散片或棱镜膜等中的一种。
在一种实施例中，所述第二光学膜片42通过第二粘接层与所述导光板20的所述第二凸起32的粘接，以防止所述第二光学膜片42的移位。
在一种实施例中，所述第二粘接层可以为双面胶或胶水等，本申请不作具体限制。
请参阅图8，图8为本申请背光模组中导光板的第二种侧视图。
所述导光板20还包括远离所述第一凸起31设置的第三凸起33。
在一种实施例中，所述第三凸起33的最小厚度小于所述第二凸起32的最大厚度。
所述第三凸起33可以包括与所述导光板出光面23平行的第三平面331。在一种实施例中，所述第三平面331可以与所述导光板出光面23非平行设置。例如图3中所述第一平面311或所述第二平面321呈一定倾角。或者，对所述第三凸起33的厚度进行线性增加。
所述导光板20还包括衔接所述第三平面331与所述第二平面321的第二斜面35。
在一种实施例中，所述第二斜面35可以与所述第一斜面34平行设置。
在一种实施例中，所述第二斜面35可以与所述第一斜面34非平行设置。
请参阅图9，图9为图8的俯视图。
所述背光模组100还包括位于所述第二光学膜片42上的至少一第三光学膜片43。所述第三光学膜片43覆盖所述导光板20中未被所述第三凸起33所覆盖的区域。
请参阅图图8和图9，所述第一光学膜片41、所述第二光学膜片42及所述第三光学膜片43的厚度之和与所述第三凸起33的厚度相同。所述第三光学膜片43的厚度与所述第三凸起33与所述第二凸起32的厚度差相同。
在一种实施例中，所述第三光学膜片43的厚度及数量本申请不作具体限制。保证所述第三光学膜片43远离所述导光板20的表面与所述第三凸起33中所述第三平面331位于同一平面即可。
在一种实施例中，所述第三凸起33与所述第三光学膜片43通过所述第二斜面35进行衔接。而为了保证所述第三光学膜片43与所述第三凸起33衔接的有效性，所述第三光学膜片43与所述第三凸起33的衔接处作斜面设置，具体倾斜角度可以参照所述第二斜面35的倾斜角度。
在一种实施例中，所述第三光学膜片43可以为增光片、扩散片或棱镜膜等中的一种。
在一种实施例中，所述第一光学膜片41、所述第二光学膜片42及所述第三光学膜片43相异。
在一种实施例中，所述第三光学膜片43通过第三粘接层与所述导光板20的所述第三凸起33的粘接，以防止所述第三光学膜片43的移位。
在一种实施例中，所述第三粘接层可以为双面胶或胶水等，本申请不作具体限制。
所述背光模组100还可以包括位于所述导光板20上的第四凸起30、第五凸起30等，具体数量本申请不作限制。
在上述实施例中，一种光学膜片对应一所述凸起30。而当该凸起30的数量大于光膜片的种类时，可以一种光学膜片对应对个该凸起30，具体设置方式本申请不做限制。
请参阅图10，图10为本申请显示装置的结构图。
所述显示装置200包括背光模组及位于所述背光模组上的显示模组。所述背光模组的结构及工作原理与上述实施例相同或相似，本申请不再赘述。
所述显示装置200包括显示区域201和位于所述显示区域外围的非显示区域202。在一种实施例中，所述导光板20中的第一区21位于所述非显示区域202内。所述导光板20中的凸起30位于所述显示装置100的非显示区域202内。
本申请提供了一种背光模组及显示装置，该背光模组包括衬底、位于该衬底上的光源、及位于该光源一侧的导光板；该导光板包括位于该导光板边缘区域的第一区；该第一区内设置有至少一凸起；在该光源至该导光板的方向上，该凸起的厚度逐渐增加。本申请通过在导光板上的相邻凸起的衔接处作斜面处理，避免了光源通过该衔接处时发生镜面反射，消除了大视角下该背光模组对应的显示器出现局部亮点或亮线等技术问题，提升了产品的品质。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种背光模组，其包括衬底、位于所述衬底上的光源、及位于所述光源一侧的导光板；
    所述导光板包括位于所述导光板边缘区域的第一区；
    所述第一区内设置有至少一凸起；
    其中，在所述光源至所述导光板的方向上，所述凸起的厚度逐渐增加。
  2. 根据权利要求1所述的背光模组，其中，
    所述导光板至少包括位于所述导光板出光面上的第一凸起及第二凸起；
    所述第一凸起的最大厚度小于所述第二凸起的最小厚度；
    其中，所述第一凸起靠近所述光源设置，所述第二凸起远离所述光源设置。
  3. 根据权利要求2所述的背光模组，其中，
    所述第一凸起包括远离所述导光板出光面的第一平面；
    所述第二凸起包括远离所述导光板出光面的第二平面；
    所述第一平面通过第一斜面与所述第二平面连接。
  4. 根据权利要求3所述的背光模组，其中，
    所述第一平面及所述第二平面与所述导光板出光面平行。
  5. 根据权利要求3所述的背光模组，其中，
    所述第一斜面与所述导光板出光面呈第一夹角设置；
    所述第一夹角为30°~60°。
  6. 根据权利要求2所述的背光模组，其中，所述背光模组还包括位于所述导光板出光面上的至少一第一光学膜片；
    所述第一光学膜片覆盖所述导光板中未被所述凸起所覆盖的区域，所述第一光学膜片的厚度与所述第一凸起的厚度相同。
  7. 根据权利要求6所述的背光模组，其中，所述显示模组还包括位于所述第一光学膜片上的至少一第二光学膜片；
    所述第二光学膜片覆盖所述导光板中未被所述第二凸起所覆盖的区域，所述第一光学膜片的厚度与所述第二光学膜片的厚度之和与所述第二凸起的厚度相同。
  8. 根据权利要求7所述的背光模组，其中，
    所述第一光学膜片通过第一粘接层与所述导光板粘接，所述第二光学膜片通过第二粘接层与所述第一凸起粘接。
  9. 根据权利要求8所述的背光模组，其中，
    所述第一粘接层和所述第二粘接层包括双面胶或胶水。
  10. 根据权利要求2所述的背光模组，其中，
    所述导光板还包括远离所述第一凸起设置的第三凸起；
    所述第三凸起包括与所述导光板出光面平行的第三平面；
    所述第三平面通过第二斜面与第二平面连接；
    所述第二斜面与第一斜面平行。
  11. 一种显示装置，其包括背光模组及位于所述背光模组上的显示模组；
    所述显示装置包括显示区域和位于所述显示区域外围的非显示区域，所述第一区位于所述非显示区域内；
    背光模组，其中，包括衬底、位于所述衬底上的光源、及位于所述光源一侧的导光板；
    所述导光板包括位于所述导光板边缘区域的第一区；
    所述第一区内设置有至少一凸起；
    其中，在所述光源至所述导光板的方向上，所述凸起的厚度逐渐增加。
  12. 根据权利要求11所述的显示装置，其中，
    所述导光板至少包括位于所述导光板出光面上的第一凸起及第二凸起；
    所述第一凸起的最大厚度小于所述第二凸起的最小厚度；
    其中，所述第一凸起靠近所述光源设置，所述第二凸起远离所述光源设置。
  13. 根据权利要求12所述的显示装置，其中，
    所述第一凸起包括远离所述导光板出光面的第一平面；
    所述第二凸起包括远离所述导光板出光面的第二平面；
    所述第一平面通过第一斜面与所述第二平面连接。
  14. 根据权利要求13所述的显示装置，其中，
    所述第一平面及所述第二平面与所述导光板出光面平行。
  15. 根据权利要求13所述的显示装置，其中，
    所述第一斜面与所述导光板出光面呈第一夹角设置；
    所述第一夹角为30°~60°。
  16. 根据权利要求12所述的显示装置，其中，所述背光模组还包括位于所述导光板出光面上的至少一第一光学膜片；
    所述第一光学膜片覆盖所述导光板中未被所述凸起所覆盖的区域，所述第一光学膜片的厚度与所述第一凸起的厚度相同。
  17. 根据权利要求16所述的显示装置，其中，所述显示模组还包括位于所述第一光学膜片上的至少一第二光学膜片；
    所述第二光学膜片覆盖所述导光板中未被所述第二凸起所覆盖的区域，所述第一光学膜片的厚度与所述第二光学膜片的厚度之和与所述第二凸起的厚度相同。
  18. 根据权利要求17所述的显示装置，其中，
    所述第一光学膜片通过第一粘接层与所述导光板粘接，所述第二光学膜片通过第二粘接层与所述第一凸起粘接。
  19. 根据权利要求18所述的显示装置，其中，
    所述第一粘接层和所述第二粘接层包括双面胶或胶水。
  20. 根据权利要求12所述的显示装置，其中，
    所述导光板还包括远离所述第一凸起设置的第三凸起；
    所述第三凸起包括与所述导光板出光面平行的第三平面；
    所述第三平面通过第二斜面与第二平面连接；
    所述第二斜面与第一斜面平行。
PCT/CN2019/106725 2019-06-14 2019-09-19 背光模组及显示装置 WO2020248422A1 (zh)

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