WO2019041986A1 - 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
WO2019041986A1
WO2019041986A1 PCT/CN2018/092414 CN2018092414W WO2019041986A1 WO 2019041986 A1 WO2019041986 A1 WO 2019041986A1 CN 2018092414 W CN2018092414 W CN 2018092414W WO 2019041986 A1 WO2019041986 A1 WO 2019041986A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical film
guide plate
display panel
light guide
edge
Prior art date
Application number
PCT/CN2018/092414
Other languages
English (en)
French (fr)
Inventor
王慧
孟小明
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 EP18851856.7A priority Critical patent/EP3677954A4/en
Priority to US16/346,502 priority patent/US10908458B2/en
Publication of WO2019041986A1 publication Critical patent/WO2019041986A1/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
    • G02B6/0081—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
    • G02F1/133615—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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a backlight module and a display device.
  • a liquid crystal display is a flat panel display.
  • the backlight module is an important component of the liquid crystal display and is used to provide a light source for the liquid crystal panel when the liquid crystal display operates.
  • the market is increasingly demanding backlight modules with high brightness, narrow bezel and optimal picture quality.
  • the backlight quality is degraded, especially the bright line inside the backlight module.
  • the present disclosure provides a backlight module and a display device.
  • the present disclosure provides a backlight module including: a light guide plate including a light incident side and a light exiting surface; a plastic frame disposed at four edges of the light guide plate; an optical film, And disposed on the light emitting surface of the light guide plate and including four sides, wherein at least a portion of at least one of the four sides of the optical film is beyond the edge of the light guide plate and stacked a plastic frame for supporting the optical film; and one or more spacers stacked on the at least one of the four sides of the optical film
  • the at least one portion of the plastic frame is located on the surface of the optical film that is away from the plastic frame, and is used to support a display panel located on the backlight module.
  • the one or more spacers are silicone gaskets having a set transmittance.
  • the four sides include a first side on a side of the light incident side of the light guide plate and three sides except the first side, the optical film
  • the first side of the sheet and the edge of the light incident side of the light guide plate are in the same plane in a direction perpendicular to the light exit surface; and the three sides of the optical film are At least a portion of each side edge is outside the edge of the light guide plate and stacked on the plastic frame, and the one side is disposed on each of the three sides of the optical film Or multiple shims.
  • the plastic frame includes four side frames, and the four side frames include a first side frame on a side of the light incident side of the light guide plate and three sides except the first side frame. a side frame, wherein each of the three side frames of the plastic frame has a convex first support surface for supporting the display panel, and each of the three side frames a middle portion of the one side frame has a second support surface for supporting the optical film, and a side of each of the three sides of the optical film is beyond an edge of the light guide plate Partially stacked on the second support surface.
  • a side of the optical film, an edge of the one or more spacers, and an outer side of the frame lie in the same plane in a direction perpendicular to the light exiting surface of the light guide plate; and at both ends of each of the three sides of the optical film, the optical film extends out The edge of the light guide plate is outside and abuts against the inner edge of the plastic frame.
  • the one or more spacers are equally spaced on a corresponding one of the three sides.
  • the second supporting surface and the first supporting surface have a set distance in a direction perpendicular to a light emitting surface of the light guide plate, and the set distance is greater than or equal to a stack of the optical film.
  • At least two of the spacers are disposed on each of the three sides of the optical film.
  • a width of each of the three sides of the optical film that is outside the edge of the light guide plate is set, and the set width is greater than or equal to 0.5 mm.
  • the present disclosure provides a display device, comprising: the backlight module of the first aspect; a display panel; and a backboard supporting the backlight module and the display And surrounding the backlight module and an outer edge of the display panel; wherein at least one of the four edges of the display panel is supported by the one or more spacers on the optical film.
  • the display panel includes a first edge on a side of the light incident side of the light guide plate and three edges except the first edge, wherein the first side of the display panel Supported by the plastic frame, each of the three edges of the display panel being stacked on the one or more pads of the corresponding one of the three sides of the optical film a.
  • the first edge of the display panel is stacked on the first side frame of the plastic frame, supported by the first side frame of the plastic frame; the three edges of the display panel The two ends of each edge are stacked on the first support surface at both ends of the corresponding side frame of the plastic frame, and the middle portion is stacked on the corresponding side of the three sides of the optical film
  • One or more spacers such that both ends of each of the three edges of the display panel are supported by the first support surface, and the middle portion is supported by the one or more spacers.
  • FIG. 1 shows a front view of a display panel provided by the present disclosure
  • FIG. 2 is a cross-sectional view of the display panel and the backlight module taken along line A-A of FIG. 1;
  • FIG. 3 is a cross-sectional view of the display panel and the backlight module taken along line B-B of FIG. 1.
  • the backlight module and the display device provided by the present disclosure can effectively solve the problem of light leakage of the backlight module when the frame of the display panel is too narrow.
  • FIG. 1 is a front view of a display panel of the present disclosure.
  • 2 is a cross-sectional view of the display panel and the backlight module taken along line A-A of FIG. 1.
  • the backlight module provided by the present disclosure includes: a light bar (not shown); a light guide plate 100 including a light incident side and a light exiting surface; and four light receiving plates 100 disposed on the light guide plate 100 a plastic frame 200 disposed on the outer surface of the light guide plate 100, wherein the optical film 200 includes four side edges, at least one of the four side edges a portion is beyond the edge of the light guide plate 100 and stacked on the plastic frame 300 such that the plastic frame 300 supports the optical film 200; and one or more spacers 400, the one or more a spacer 400 on a portion of the at least one side of the optical film 200 stacked on the bezel 300 and on a surface of the optical film 200 away from the bezel 300, One or more spacers 400 are used to support the display panel
  • the backlight module and the display device of the present disclosure extend at least a portion of at least one of the four sides of the optical film 200 such that at least a portion of at least one side of the optical film 200 extends beyond the guide.
  • the edge of the light panel 100 is stacked on the plastic frame 300, and a spacer 400 is disposed on a portion of the optical film 200 stacked on the plastic frame 300, so that the plastic frame 300 supports the optical film 200, the optical film.
  • the spacer 400 on the sheet 200 supports the display panel 500.
  • at least one side of the optical film 200 extends outward by a certain distance, and the distance between the optical film 200 and the display area of the display panel 500 is increased, thereby being effective.
  • the problem of light leakage when the width of the frame of the display panel is too narrow (for example, the width of the frame is less than 2 mm) is solved in the related art.
  • the spacer 400 is made of a silicone material having a light transmittance.
  • the spacer 400 is made of a silicone material, and on the one hand, it can serve the purpose of supporting the display panel 500 without causing damage to the display panel 500.
  • the transmittance and shape of the silicone can be adjusted as needed to adjust the optical film. Brightness uniformity at the side of 200, etc.
  • the optical film 200 includes four sides including the entrance of the light guide plate 100. a first side of the side on which the light side is located and three sides other than the first side, wherein the first side of the optical film and the light incident side of the light guide plate
  • the edges of the optical film 200 are located in the same plane perpendicular to the light-emitting surface, and at least a portion of each of the three sides of the optical film 200 is beyond the edge of the light guide plate 100 and stacked
  • the spacer 400 is disposed on the plastic frame 300 and at each of the three sides of the optical film 200.
  • each of the three sides of the optical film 200 lie in the same plane in a direction perpendicular to the light exit surface of the light guide plate 100.
  • the optical film 200 extends beyond the edge of the light guide plate 100 and abuts against the frame 300 On the inside edge.
  • the side of the optical film 200 may not exceed the light guide plate 100, and the display panel 500 is still supported by the plastic frame 300; and on the other three sides of the light guide plate 100, The three sides of the optical film 200 extend beyond the light guide plate 100, and the display panel 500 is supported by the spacer 400.
  • one or both sides of the optical film 200 may extend out of the light guide plate 100 and be supported by the plastic frame 300 according to actual needs, and a gasket is disposed at the one or both sides.
  • the display panel 500 is supported by 400 to prevent light leakage, and is not limited to the case where the three sides of the optical film 200 extend beyond the light guide plate 100.
  • the plastic frame 300 includes four side frames, and the four side frames include the light incident side of the light guide plate 100 .
  • a first side frame on one side and three side frames except the first side frame wherein two ends of each of the three side frames of the plastic frame 300 have a convex shape Supporting the first supporting surface 301 of the display panel 500, a central portion of each of the three side frames has a second supporting surface 302 for supporting the optical film 200, the optical film At least a portion of the 200 beyond the edge of the light guide plate 100 is stacked on the second support surface 302.
  • the display panel 500 includes a first edge on a side of the light-incident side of the light guide plate 100 and three edges except the first edge, wherein the first edge of the display panel 500 is covered by the plastic frame 300 supports, a middle portion of each of the three edges of the display panel 500 is stacked on the spacer 400 on a corresponding one of the three sides of the optical film 200, and Two ends of each of the three edges are stacked on the first support surface 301 at one end of one of the three side frames of the plastic frame 300.
  • the other three edges of the display panel 500 can support the other three of the display panel 500 through the three-point support structure. Edges. That is, the display panel 500 is supported by the plastic frame 300 at each of the other three edges except the light incident side of the light guide plate 100, and the intermediate portion is supported by one or more spacers 400 on the optical film 200. . In this way, the display panel 500 can be better supported, fixed, and prevented from expanding and contracting. The middle portion of each edge is supported by the spacer 400 on the optical film 200, and the distance L between the optical film 200 and the display area of the display panel 500 can be increased to prevent light leakage.
  • At least two spacers 400 are disposed at each of the three sides of the optical film 200, for example, three spacers 400 are disposed.
  • the at least two spacers 400 are equally spaced.
  • the side of the display panel 500 adopts the above three-point support structure, the difference in brightness between the two ends of the display panel 500 and the middle can be avoided by adjusting the transmittance and shape of the silicone gasket 400.
  • the second supporting surface 302 and the first supporting surface 301 have a set distance in a direction perpendicular to a light emitting surface of the light guide plate 100, The set distance is greater than or equal to the sum of the thickness of the portion of the optical film 200 stacked on the second support surface 302 and the thickness of the spacer 400.
  • the second supporting surface 302 of the plastic frame 300, the optical die 200 and the spacer 400 collectively support the display panel 500 with the plastic frame.
  • the first support surface 301 of 300 has the same support height for the display substrate 500.
  • the distance between the first supporting surface 301 and the second supporting surface 302 in a direction perpendicular to the light emitting surface of the light guide plate 100 should be equal to the sum of the thickness of the optical film 200 and the thickness of the spacer 400.
  • a value of a width of the three sides of the optical film 200 that is outside the edge of the light guide plate 100 is greater than or equal to 0.5 mm.
  • the distance L between the side of the optical film 200 and the display area of the display panel 500 is increased by about 0.5 mm, which can better avoid the occurrence of light leakage.
  • the present disclosure also provides a display device.
  • the display device includes a backlight module, a display panel 500, and a back plate 600.
  • the backlight module adopts the backlight module provided by the above embodiment of the present disclosure, and an edge of at least one side of the display panel 500 is supported by the spacer 400 on the optical film 200, and the back plate
  • the 600 supports the backlight module and the display panel 500 and surrounds the backlight module and the outer edge of the display panel 500.
  • the display panel 500 includes a first edge on a side of the light-incident side of the light guide plate 100 and except the first edge.
  • the three edges of the display panel 500 are supported by the plastic frame 300, and each of the three edges of the display panel 500 is stacked on the optical film 200.
  • the spacer 400 at one of the three sides is described.
  • the edge of the optical film 200 may not exceed the light guide plate 100, and the display panel 500 is still supported by the plastic frame 300; and on the other three sides of the light guide plate 100, the optical The three sides of the diaphragm 200 extend beyond the light guide plate 100, and the display panel 500 is supported by the spacer 400.
  • the first edge of the display panel 500 is stacked on the first side frame of the plastic frame 300 and supported by the first side frame of the plastic frame 300.
  • the first ends of each of the three edges of the display panel 500 except the first edge are stacked on the first support of the corresponding side frame of the plastic frame 300 except the first side frame
  • a middle portion is stacked on the spacer 400 at the edge of the corresponding side of the three side edges of the corresponding optical film 200 so that each of the three edges of the display panel 500 Both ends of the edge are supported by the first support surface 301, and the middle portion is supported by the spacer 400.
  • the display panel 500 can be improved by the entire edge of the original plastic frame 300 to the three points, except that the edge of the light-incident side of the light guide plate 100 is supported by the plastic frame 300.
  • the support structure that is, the other three edges of the display panel 500 except the edge where the light incident side of the light guide plate 100 is located, is supported by the plastic frame 300 at both ends, and the middle portion is covered by the spacer 400 on the optical film 200. Joint support.
  • the two ends of each edge of the display panel 500 are still supported by the plastic frame 300, which can better support and fix the display panel 500 and prevent the effects of thermal expansion and contraction.
  • the middle portion of each edge is covered by an optical film.
  • the spacer 400 on the 200 is supported to increase the distance between the optical film 200 and the display area of the display panel 500 to prevent light leakage.
  • the backlight module and the display device of the present disclosure extend at least one side of the optical film so that at least a portion of at least one side of the optical film can extend beyond the edge of the light guide plate and be stacked on the glue.
  • a spacer is provided at the at least one side of the optical film for supporting the display panel.

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

Abstract

一种背光模组及显示装置，背光模组包括：导光板（100），包括入光侧及出光面；胶框（300），设置于导光板（100）的四个边缘处；光学膜片（200），设置于导光板（100）的出光面上并且包括四个侧边，其中光学膜片（200）的四个侧边中的至少一个侧边的至少一部分超出导光板（100）的边缘外并叠放在胶框（300）上，以使胶框（300）支撑光学膜片；以及垫片（400），位于光学膜片（200）的至少一个侧边的叠放在胶框（300）上的至少一部分上并且位于光学膜片（200）远离胶框（300）的表面上，并且用以支撑位于背光模组上的显示面板（500）。

Description

背光模组及显示装置
相关申请的交叉引用
本申请主张在2017年8月28日在中国提交的中国专利申请号No.201710750908.8的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示技术领域，尤其涉及一种背光模组及显示装置。
背景技术
液晶显示器(LCD，Liquid Crystal Display)是一种平板显示器。背光模组是液晶显示器的重要部件，并且用于在液晶显示器工作时为液晶面板提供光源。随着智能手机的高速发展，市场越来越需要高亮度、窄边框、画面品质最优的背光模组。在窄边框的液晶电视器演变的过程中，伴随而来的是背光品质的下降，尤其是背光模组内侧亮线的问题。
发明内容
本公开提供一种背光模组及显示装置。
在第一方面，本公开提供一种背光模组，该背光模组包括：导光板，包括入光侧及出光面；胶框，设置于所述导光板的四个边缘处；光学膜片，设置于所述导光板的出光面上并且包括四个侧边，其中所述光学膜片的四个侧边中的至少一个侧边的至少一部分超出所述导光板的边缘外并叠放在所述胶框上，以使所述胶框支撑所述光学膜片；以及一个或多个垫片，位于所述光学膜片的所述四个侧边中所述至少一个侧边的叠放在所述胶框上的所述至少一部分上并且位于所述光学膜片远离所述胶框的表面上，并且用以支撑位于所述背光模组上的显示面板。
可选地，所述一个或多个垫片为具有设定透光度的硅胶垫片。
可选地，所述四个侧边包括位于所述导光板的所述入光侧所在一侧的第一侧边及除所述第一侧边之外的三个侧边，所述光学膜片的所述第一侧边与 所述导光板的所述入光侧的边缘在垂直于所述出光面的方向上位于同一平面内；并且所述光学膜片的所述三个侧边中每一侧边的至少一部分超出所述导光板的边缘外并叠放在所述胶框上，且在所述光学膜片的所述三个侧边中每一侧边均设置有所述一个或多个垫片。
可选地，所述胶框包括四个侧边框，所述四个侧边框包括位于所述导光板的入光侧所在一侧的第一侧边框及除所述第一侧边框之外的三个侧边框，其中所述胶框的所述三个侧边框中每一侧边框的两端具有凸出的、用于支撑所述显示面板的第一支撑面，所述三个侧边框中每一侧边框的中部具有凹陷的、用于支撑所述光学膜片的第二支撑面，所述光学膜片的所述三个侧边中每个侧边的超出所述导光板的边缘外的部分叠放在所述第二支撑面上。
可选地，在所述光学膜片的所述三个侧边中每个侧边的中部处，所述光学膜片的侧边、所述一个或多个垫片的边缘以及胶框的外侧边缘沿垂直于所述导光板的出光面的方向上位于同一平面内；并且在所述光学膜片的所述三个侧边的每个侧边的两端，所述光学膜片延伸出所述导光板的边缘之外并且抵靠在所述胶框的内侧边缘上。
可选地，所述一个或多个垫片在所述三个侧边中对应的一个侧边上等间距分布。
可选地，所述第二支撑面与所述第一支撑面在垂直于所述导光板的出光面的方向上具有设定距离，所述设定距离大于或等于所述光学膜片的叠放于所述第二支撑面上的部分的厚度与所述一个或多个垫片的厚度之和。
可选地，在所述光学膜片的所述三个侧边中每一侧边设置有至少两个所述垫片。
可选地，所述光学膜片的所述三个侧边中的每个侧边的超出所述导光板的边缘外设定的宽度，所述设定的宽度大于或等于0.5mm。
在第二方面，本公开提供一种显示装置，该显示装置包括：如第一方面所述的背光模组；显示面板；以及背板，所述背板支撑所述背光模组和所述显示面板并且包围所述背光模组和所述显示面板的外边缘；其中所述显示面板的四个边缘中的至少一个边缘由所述光学膜片上的所述一个或多个垫片支撑。
可选地，所述显示面板包括位于所述导光板的入光侧所在一侧的第一边缘及除所述第一边缘之外的三个边缘，其中所述显示面板的所述第一边缘由所述胶框支撑，所述显示面板的所述三个边缘中的每个边缘叠放于所述光学膜片的所述三个侧边中对应的侧边的所述一个或多个垫片上。
可选地，所述显示面板的所述第一边缘叠放于所述胶框的第一侧边框上，由所述胶框的第一侧边框支撑；所述显示面板的所述三个边缘中每一边缘的两端叠放在所述胶框的对应侧边框两端的第一支撑面上，中部叠放在所述光学膜片的所述三个侧边中对应侧边处的所述一个或多个垫片上，以使所述显示面板的所述三个边缘中每一边缘的两端由所述第一支撑面支撑，中部由所述一个或多个垫片支撑。
附图说明
图1表示本公开提供的显示面板的主视图；
图2表示图1中沿A-A线截取的显示面板和背光模组的剖视图；以及
图3表示图1中沿B-B线截取的显示面板和背光模组的剖视图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合本公开的附图，对本公开的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
在相关的显示面板中，当显示面板的边框宽度过窄时，光学膜片与显示面板的显示区的距离过小可能导致漏光。本公开提供的背光模组及显示装置能够有效解决背光模组在显示面板的边框过窄时存在的漏光问题。
参考图1和图2，图1是本公开的显示面板的主视图。图2是沿图1中的A-A线截取的显示面板和背光模组的剖视图。如图1和图2所示，本公开提供的背光模组包括：灯条(图中未示出)；导光板100，包括入光侧及出光面；设置于所述导光板100的四个边缘外部的胶框300；设置于所述导光板100的出光面上的光学膜片200，其中所述光学膜片200包括四个侧边，所述 四个侧边中至少一个侧边的至少一部分超出所述导光板100的边缘外并叠放在所述胶框300上，以使所述胶框300支撑所述光学膜片200；以及一个或多个垫片400，该一个或多个垫片400在所述光学膜片200的所述至少一个侧边的叠放在所述胶框300上的部分上并且在所述光学膜片200远离所述胶框300的表面上，所述一个或多个垫片400用于支撑显示面板500。灯条位于导光板100的入光侧。灯条可以是LED灯条，但是不局限于此。
本公开提供的背光模组及显示装置将光学膜片200的四个侧边中的至少一个侧边的至少一部分向外延伸，使光学膜片200的至少一个侧边的至少有一部分超出到导光板100的边缘外并叠放在胶框300上，并在光学膜片200的叠放在所述胶框300的部分上设置垫片400，以使胶框300支撑光学膜片200，光学膜片200上的垫片400支撑显示面板500。与相关技术中采用胶框来支撑显示面板的方式相比，光学膜片200的至少一个侧边向外延伸了一定距离，光学膜片200到显示面板500的显示区的距离增加，从而可以有效解决相关技术中当显示面板的边框宽度过窄(如边框宽度在2mm以下)时的漏光问题。
在本公开所提供的可选实施例中，所述垫片400采用具有透光度的硅胶材质制成。垫片400采用硅胶材质，一方面可以起到支撑显示面板500时不会对显示面板500造成损伤的目的，另一方面硅胶的透光度及形状等可以根据需要进行调整，来调整光学膜片200的侧边处的亮度均匀性等。
此外，在本公开所提供的可选实施例中，如图2至图4所示，所述光学膜片200包括四个侧边，所述四个侧边包括位于所述导光板100的入光侧所在一侧的第一侧边及除所述第一侧边之外的三个侧边，其中所述光学膜片的所述第一侧边与所述导光板的所述入光侧的边缘在垂直于所述出光面的方向上位于同一平面内，所述光学膜片200的所述三个侧边中每一侧边的至少一部分超出所述导光板100的边缘外并叠放在所述胶框300上，且在所述光学膜片200的所述三个侧边中每一侧边处设置有所述垫片400。
可选地，在所述光学膜片200的所述三个侧边中每个侧边的中部处，所述光学膜片200的侧边、所述垫片400的边缘以及胶框的外侧边缘沿垂直于所述导光板100的出光面的方向上位于同一平面内。在所述光学膜片200的 所述三个侧边的每个侧边的两端，所述光学膜片200延伸出所述导光板100的边缘之外并且抵靠在所述胶框300的内侧边缘上。
采用上述方案，在导光板100的入光侧，光学膜片200的侧边可以不超出导光板100之外，仍然由胶框300来支撑显示面板500；而在导光板100的其他三侧，光学膜片200的三个侧边均延伸出导光板100之外，通过垫片400支撑显示面板500。
需要说明的是，也可以根据实际需求，使得光学膜片200的一个或两个侧边延伸出导光板100之外并且由胶框300支撑，并在这一个或两个侧边处设置垫片400来支撑显示面板500，以防止漏光，而不限定在光学膜片200的三侧边均延伸出导光板100之外的方案。
在本公开所提供的可选实施例中，如图2至图4所示，所述胶框300包括四个侧边框，所述四个侧边框包括位于所述导光板100的入光侧所在一侧的第一侧边框及除所述第一侧边框之外的三个侧边框，其中所述胶框300的所述三个侧边框中每一侧边框的两端具有凸出的、用于支撑显示面板500的第一支撑面301，所述三个侧边框中每一侧边框的中部具有凹陷的、用于支撑所述光学膜片200的第二支撑面302，所述光学膜片200的超出所述导光板100的边缘外的至少一部分叠放在所述第二支撑面302上。
显示面板500包括位于所述导光板100的入光侧所在一侧的第一边缘及除所述第一边缘之外的三个边缘，其中所述显示面板500的第一边缘由所述胶框300支撑，所述显示面板500的所述三个边缘中每个边缘的中部叠放于所述光学膜片200的所述三个侧边中对应的一个侧边上的垫片400上，并且所述三个边缘中每个边缘的两端叠放在所述胶框300的三个侧边框中的对一个的一个侧边框两端的第一支撑面301上。
采用上述方案，除在导光板100的入光侧采用胶框300整边支撑显示面板500之外，在显示面板500的其它三个边缘处均可以通过三点支撑结构支撑显示面板500的其它三个边缘。即显示面板500除导光板100的入光侧之外的其他三个边缘中每一边缘两端由胶框300支撑、中间部分由光学膜片200上的一个或多个垫片400来共同支撑。这样，可以对显示面板500起到更好的支撑、固定和防止热胀冷缩的作用。每一边缘的中间部分由光学膜片200 上的垫片400来支撑，可以增加光学膜片200与显示面板500的显示区之间的距离L，以起到防止漏光的作用。
可选的，如图2所示，在所述光学膜片200的所述三个侧边中每一侧边处设置有至少两个垫片400，例如设置三个垫片400。所述至少两个垫片400等间距分布。
此外，由于显示面板500的侧边采用上述三点支撑结构，可以通过调整硅胶垫片400的透光度及形状来避免显示面板500的两端和中间之间的亮度差。
此外，在本公开所提供的可选实施例中，所述第二支撑面302与所述第一支撑面301在垂直于所述导光板100的出光面的方向上具有设定距离，所述设定距离大于或等于所述光学膜片200的叠放于所述第二支撑面302上的部分的厚度与所述垫片400的厚度之和。
采用上述方案，由于显示面板500由胶框300与垫片400共同支撑，所以胶框300的第二支撑面302、光学模片200与垫片400共同对显示面板500的支撑高度应当与胶框300的第一支撑面301对显示基板500的支撑高度相同。所述第一支撑面301与所述第二支撑面302之间沿垂直于所述导光板100的出光面的方向上的距离应等于光学膜片200的厚度与垫片400的厚度之和。
此外，在本公开所提供的实施例中，所述光学膜片200的所述三个侧边中超出所述导光板100的边缘外的宽度的值大于或等于0.5mm。
采用上述方案，与相关技术相比，所述光学膜片200的侧边与显示面板500的显示区之间的距离L增加0.5mm左右，可以更好的避免漏光现象产生。
此外，如图3所示，本公开还提供了一种显示装置。该显示装置包括背光模组、显示面板500和背板600。所述背光模组采用本公开的上面的实施例所提供的背光模组，所述显示面板500的至少一侧的边缘由所述光学膜片200上的垫片400支撑，并且所述背板600支撑背光模组和所述显示面板500并且包围所述背光模组和所述显示面板500的外边缘。
在本公开所提供的可选实施例中，如图2所示，所述显示面板500包括位于所述导光板100的入光侧所在一侧的第一边缘及除所述第一边缘之外的三个边缘，其中所述显示面板500的第一边缘由所述胶框300支撑，所述显 示面板500的所述三个边缘中的每个边缘叠放于所述光学膜片200的所述三个侧边中对应一个侧边处的垫片400上。
采用上述方案，在导光板100的入光侧，光学膜片200的边缘可以不超出导光板100之外，仍然由胶框300来支撑显示面板500；而在导光板100的其他三侧，光学膜片200的三个侧边均延伸出导光板100之外，通过垫片400支撑显示面板500。
可选的，如图2至图4所示，所述显示面板500的第一边缘叠放于所述胶框300的第一侧边框上，由所述胶框300的第一侧边框支撑；所述显示面板500的除所述第一边缘以外的所述三个边缘中每一边缘的两端叠放在所述胶框300的除第一侧边框以外的对应侧边框两端的第一支撑面301上，中部叠放在对应的所述光学膜片200的三个侧边中对应侧边的边缘处的垫片400上，以使所述显示面板500的所述三个边缘中每一边缘的两端由所述第一支撑面301支撑，中部由所述垫片400支撑。
采用上述方案，显示面板500除导光板100的入光侧所在的边缘采用胶框300整边支撑之外，其他三个边缘均可以由原来的胶框300整边支撑的结构改进为三点共同支撑结构，即，显示面板500除导光板100的入光侧所在的边缘之外的其他三个边缘每一边缘两端由胶框300支撑、中间部分由光学膜片200上的垫片400来共同支撑。这样，显示面板500的每一边缘的两端仍由胶框300支撑，可以对显示面板500进行更好的支撑、固定并且防止热胀冷缩的影响，每一边缘的中间部分由光学膜片200上的垫片400来支撑，可以增加光学膜片200与显示面板500的显示区的距离，以起到防止漏光的目的。
本公开所提供的背光模组及显示装置，将光学膜片的至少一个侧边向外延伸，使光学膜片的至少一个侧边的至少一部分可以超出到导光板的边缘外并叠放在胶框上。在光学膜片的所述至少一个侧边处设置垫片，用来支撑显示面板。与相关技术中采用胶框来支撑显示面板的方式相比，光学膜片由于向外延伸，使得光学膜片到显示面板的显示区的距离增加，从而可以有效解决相关技术中显示面板的边框宽度过窄(如边框宽度在2mm以下)时的漏光问题。
以上所述仅是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开技术原理的前提下，还可以做出若干改进和替换，这些改进和替换也应视为本公开的保护范围。

Claims (12)

  1. 一种背光模组，包括：
    导光板，包括入光侧及出光面；
    胶框，设置于所述导光板的四个边缘处；
    光学膜片，设置于所述导光板的出光面上并且包括四个侧边，其中所述光学膜片的四个侧边中的至少一个侧边的至少一部分超出所述导光板的边缘外并叠放在所述胶框上，以使所述胶框支撑所述光学膜片；以及
    一个或多个垫片，位于所述光学膜片的所述四个侧边中所述至少一个侧边的叠放在所述胶框上的所述至少一部分上并且位于所述光学膜片远离所述胶框的表面上，并且用以支撑位于所述背光模组上的显示面板。
  2. 根据权利要求1所述的背光模组，其中，所述一个或多个垫片为具有设定透光度的硅胶垫片。
  3. 根据权利要求1或2所述的背光模组，其中，所述四个侧边包括位于所述导光板的所述入光侧所在一侧的第一侧边及除所述第一侧边之外的三个侧边，所述光学膜片的所述第一侧边与所述导光板的所述入光侧的边缘在垂直于所述出光面的方向上位于同一平面内；并且
    所述光学膜片的所述三个侧边中每一侧边的至少一部分超出所述导光板的边缘外并叠放在所述胶框上，且在所述光学膜片的所述三个侧边中每一侧边均设置有所述一个或多个垫片。
  4. 根据权利要求3所述的背光模组，其中，所述胶框包括四个侧边框，所述四个侧边框包括位于所述导光板的入光侧所在一侧的第一侧边框及除所述第一侧边框之外的三个侧边框，其中所述胶框的所述三个侧边框中每一侧边框的两端具有凸出的、用于支撑所述显示面板的第一支撑面，所述三个侧边框中每一侧边框的中部具有凹陷的、用于支撑所述光学膜片的第二支撑面，所述光学膜片的所述三个侧边中每个侧边的超出所述导光板的边缘外的部分叠放在所述第二支撑面上。
  5. 根据权利要求4所述的背光模组，其中，在所述光学膜片的所述三个侧边中每个侧边的中部处，所述光学膜片的侧边、所述一个或多个垫片的边 缘以及胶框的外侧边缘沿垂直于所述导光板的出光面的方向上位于同一平面内；并且
    在所述光学膜片的所述三个侧边的每个侧边的两端，所述光学膜片延伸出所述导光板的边缘之外并且抵靠在所述胶框的内侧边缘上。
  6. 根据权利要求3至5中任一项所述的背光模组，其中，所述一个或多个垫片在所述三个侧边中对应的一个侧边上等间距分布。
  7. 根据权利要求4所述的背光模组，其中，所述第二支撑面与所述第一支撑面在垂直于所述导光板的出光面的方向上具有设定距离，所述设定距离大于或等于所述光学膜片的叠放于所述第二支撑面上的部分的厚度与所述一个或多个垫片的厚度之和。
  8. 根据权利要求1至7中任一项所述的背光模组，其中，在所述光学膜片的所述三个侧边中每一侧边设置有至少两个所述垫片。
  9. 根据权利要求3至8中任一项所述的背光模组，其中，所述光学膜片的所述三个侧边中的每个侧边的超出所述导光板的边缘外设定的宽度，所述设定的宽度大于或等于0.5mm。
  10. 一种显示装置，包括：
    如权利要求1至9中任一项所述的背光模组；
    显示面板；以及
    背板，所述背板支撑所述背光模组和所述显示面板并且包围所述背光模组和所述显示面板的外边缘；
    其中所述显示面板的四个边缘中的至少一个边缘由所述光学膜片上的所述一个或多个垫片支撑。
  11. 根据权利要求10所述的显示装置，其中，所述显示装置包括如权利要求3所述的背光模组，所述显示面板包括位于所述导光板的入光侧所在一侧的第一边缘及除所述第一边缘之外的三个边缘，其中所述显示面板的所述第一边缘由所述胶框支撑，所述显示面板的所述三个边缘中的每个边缘叠放于所述光学膜片的所述三个侧边中对应的侧边的所述一个或多个垫片上。
  12. 根据权利要求11所述的显示装置，其中，所述显示装置包括如权利要求4所述的背光模组，所述显示面板的所述第一边缘叠放于所述胶框的第 一侧边框上，由所述胶框的第一侧边框支撑；所述显示面板的所述三个边缘中每一边缘的两端叠放在所述胶框的对应侧边框两端的第一支撑面上，中部叠放在所述光学膜片的所述三个侧边中对应侧边处的所述一个或多个垫片上，以使所述显示面板的所述三个边缘中每一边缘的两端由所述第一支撑面支撑，中部由所述一个或多个垫片支撑。
PCT/CN2018/092414 2017-08-28 2018-06-22 背光模组及显示装置 WO2019041986A1 (zh)

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