WO2017008313A1 - 一种液晶显示装置 - Google Patents

一种液晶显示装置 Download PDF

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Publication number
WO2017008313A1
WO2017008313A1 PCT/CN2015/084321 CN2015084321W WO2017008313A1 WO 2017008313 A1 WO2017008313 A1 WO 2017008313A1 CN 2015084321 W CN2015084321 W CN 2015084321W WO 2017008313 A1 WO2017008313 A1 WO 2017008313A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
layer
liquid crystal
display device
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2015/084321
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English (en)
French (fr)
Inventor
王聪
杜鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
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 Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/769,785 priority Critical patent/US9618690B2/en
Publication of WO2017008313A1 publication Critical patent/WO2017008313A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
    • 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
    • G02F1/133314—Back frames

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a liquid crystal display device.
  • the array substrate 11 is disposed adjacent to the light guide plate 13 and the color filter substrate 12 is disposed away from the light guide plate 13 , and the external plastic frame 14 fixes the display panel 15 and the backlight module, and
  • a groove 141 is generally designed on the plastic frame 14 to enclose the display panel 15, but this will increase the external space occupied by the plastic frame 14, which is not conducive to liquid crystal.
  • the TFT that enters the array substrate 11 is blocked from light emitted from the light guide plate 13 (Thin Film Transistor (film transistor) 16 is located in the area to ensure the display contrast of the liquid crystal display device 10, and metal shading must be provided under the TFT 16 (Layer of Shading, LS) layer 17, which undoubtedly complicates the structure of the display panel 15, thereby increasing the manufacturing process of the entire liquid crystal display device 10 and increasing the production cost.
  • Thin Film Transistor (film transistor) 16 is located in the area to ensure the display contrast of the liquid crystal display device 10, and metal shading must be provided under the TFT 16 (Layer of Shading, LS) layer 17, which undoubtedly complicates the structure of the display panel 15, thereby increasing the manufacturing process of the entire liquid crystal display device 10 and increasing the production cost.
  • Embodiments of the present invention provide a liquid crystal display device with a narrow bezel or no border.
  • a liquid crystal display device includes: a back plate; a light guide plate on the back plate and having a groove, a side wall of the groove is a slope, a bottom surface of the groove is a light-emitting surface of the light guide plate; and an optical film,
  • the display panel is located on the optical film and comprises an array substrate and a color film substrate.
  • the color film substrate is adjacent to the optical film and the edge thereof is carried on the slope of the groove; the plastic frame is disposed around the light guide plate.
  • One end of the plastic frame is fixed on the back plate, and the other end is fixed to the array substrate and flush with the edge of the array substrate; the light source is located between the plastic frame and the side of the light guide plate, and the side of the light guide plate is the light incident surface of the light guide plate.
  • the array substrate comprises: a base body; a polysilicon layer on the base body; an insulating layer covering the base body including the polysilicon layer, and two first contact holes are opened; the gate is located in the pair On the insulating layer of the polysilicon layer; the interlayer dielectric covers the insulating layer including the gate, and has two second contact holes corresponding to the two first contact holes; the source and the drain are located between the layers
  • the medium is electrically connected to both ends of the polysilicon layer through the two first contact holes and the two second contact holes; the flat layer covers the interlayer dielectric including the source and the drain, and the third contact is opened a pixel; the pixel electrode is correspondingly
  • the liquid crystal display device further includes a first polarizer and a second polarizer.
  • the first polarizer is located on a side of the array substrate opposite to the light guide plate, and the second polarizer is located between the light guide plate and the optical film. The other side is sandwiched between the optical film and the second polarizer or abuts against the edge of the second polarizer.
  • the array substrate further includes: a common electrode on a flat layer other than the TFT of the corresponding array substrate; and a passivation layer on the flat layer and the common electrode, and not in a direction perpendicular to the display panel and facing the light guide plate The third contact hole is covered; the pixel electrode is on the passivation layer.
  • the gate electrode comprises a chrome metal layer, an aluminum metal layer and a molybdenum metal layer which are sequentially stacked.
  • the substrate comprises a substrate sheet and a buffer layer formed on the substrate sheet.
  • the color film substrate comprises a black matrix layer, and the black matrix layer corresponds to the polysilicon layer.
  • the projection area of the optical film is located within the area of the bottom surface of the groove.
  • a liquid crystal display device includes: a back plate; a light guide plate on the back plate and having a groove, the side wall of the groove is a slope, and the bottom surface of the groove is a light-emitting surface of the light guide plate; the optical film
  • the display panel is located on the optical film and includes an array substrate and a color film substrate.
  • the color film substrate is adjacent to the optical film and the edge thereof is carried on the slope of the groove; the plastic frame is disposed around the light guide plate.
  • One end of the plastic frame is fixed on the back plate, and the other end is fixed to the array substrate and flush with the edge of the array substrate; the light shielding tape is used to achieve relative fixation between the color film substrate and the light guide plate, and one side of the light shielding tape is opposite to the plastic frame The other side abuts or overlaps the edge of the optical film.
  • the liquid crystal display device further includes a light source, the light source is located between the plastic frame and the side of the light guide plate, and the side of the light guide plate is the light incident surface of the light guide plate.
  • the liquid crystal display device further includes a first polarizer and a second polarizer.
  • the first polarizer is located on a side of the array substrate opposite to the light guide plate, and the second polarizer is located between the light guide plate and the optical film. The other side is sandwiched between the optical film and the second polarizer or abuts against the edge of the second polarizer.
  • the array substrate includes: a substrate; a polysilicon layer on the substrate; an insulating layer covering the substrate including the polysilicon layer, and two first contact holes are opened along the direction perpendicular to the display panel and facing the light guide plate; a pole, located on the insulating layer corresponding to the polysilicon layer; an interlayer dielectric covering the insulating layer including the gate, and two second contact holes corresponding to the two first contact holes; the source and the drain , on the interlayer dielectric and electrically connected to both ends of the polysilicon layer through the two first contact holes and the two second contact holes; the flat layer covers the interlayer dielectric including the source and the drain, and is opened There is a third contact hole; a pixel electrode correspondingly located above the flat layer, and the pixel electrode can be electrically connected to the drain or the source through the third contact hole.
  • the array substrate further includes: a common electrode on a flat layer other than the TFT of the corresponding array substrate; and a passivation layer on the flat layer and the common electrode, and not in a direction perpendicular to the display panel and facing the light guide plate The third contact hole is covered; the pixel electrode is on the passivation layer.
  • the gate electrode comprises a chrome metal layer, an aluminum metal layer and a molybdenum metal layer which are sequentially stacked.
  • the substrate comprises a substrate sheet and a buffer layer formed on the substrate sheet.
  • the color film substrate comprises a black matrix layer, and the black matrix layer corresponds to the polysilicon layer.
  • the projection area of the optical film is located within the area of the bottom surface of the groove.
  • the color film substrate is disposed adjacent to the light guide plate, and the color film substrate can be carried by the light shielding tape and the groove of the light guide plate, and the edge of the array substrate is flush with the edge of the plastic frame. That is, the width of the plastic frame can be minimized, thereby facilitating the narrow frame and the borderless design of the liquid crystal display device.
  • FIG. 1 is a schematic structural view of an embodiment of a liquid crystal display device of the prior art
  • FIG. 2 is a schematic structural view of an embodiment of the display panel shown in FIG. 1;
  • FIG. 3 is a schematic structural view of an embodiment of a liquid crystal display device of the present invention.
  • FIG. 4 is a schematic structural view of an embodiment of the display panel shown in FIG. 3;
  • Fig. 5 is a view showing the configuration of another embodiment of the liquid crystal display device of the present invention.
  • the liquid crystal display device 30 of the embodiment of the present invention includes a back plate 31 , a light guide plate 32 , an optical film 33 , a display panel 34 , a plastic frame 35 , and a light shielding tape 36 .
  • the light guide plate 32 is located on the back plate.
  • the optical film 33 is located on the bottom surface of the recess 321 , and the optical film 33 is located on the bottom surface of the recess 321 , and the groove 321 is disposed on the bottom surface of the recess 321 .
  • the area may be less than or equal to the area of the bottom surface of the recess 321 , preferably in a direction perpendicular to the display panel 34 and toward the light guide plate 32 (in the direction indicated by the arrow in the figure), the projection area of the optical film 33 is located in the concave
  • the area of the bottom surface of the groove 321 is of course.
  • the area of the optical film 33 of the embodiment of the present invention may also be larger than the area of the bottom surface of the groove 321; the display panel 34 is located on the optical film 33 and includes the color film substrate 341 and
  • the array substrate 342 is disposed around the periphery of the light guide plate 32.
  • One end of the plastic frame 35 is fixed on the back plate 31 and the other end is fixed to the array substrate 342.
  • the color film substrate 341 is adjacent to the optical film 33 (or the light guide plate 32), and the edge of the color film substrate 341 is carried on the groove 321 of the light guide plate 32.
  • the edge of the color film substrate 341 is carried on the groove 321 of the light guide plate 32.
  • one side of the light-shielding tape 36 that is opaque is in contact with the frame 35 and the other side abuts or overlaps with the edge of the optical film 33, not only the OLB of the liquid crystal display device 30 can be prevented (Outer) Lead
  • the outer lead soldering area, light leakage occurs, and the adhesive between the color filter substrate 341 and the light guide plate 32 can be realized by using the adhesive on the light-shielding tape 36, so that the plastic frame 35 does not need to be arranged as shown in FIG.
  • the groove 141 can fix the display panel 34 on the light-emitting surface of the light guide plate 32.
  • the plastic frame 35 is flush with the edge of the array substrate 342, and the width of the plastic frame 35 can be minimized.
  • the narrow frame and the borderless design of the liquid crystal display device 30 are advantageous.
  • the liquid crystal display device 30 of the present embodiment may be the side-entry liquid crystal display device shown in FIG. 3, that is, the light source 37 of the liquid crystal display device 30 is located between the bezel 35 and the side of the light guide plate 32.
  • the side surface of the light guide plate 32 is the light incident surface of the light guide plate 32 and is perpendicular to the light exit surface.
  • it may be a direct type liquid crystal display device, that is, the light source 37 of the liquid crystal display device 30 is located on the back plate 31 and the light guide plate. Between the bottom surfaces of the 32, the bottom surface of the light guide plate 32 is the light incident surface of the light guide plate 32 and faces the light exit surface.
  • the liquid crystal display device 30 further includes a first polarizer 381 and a second polarizer 382.
  • the first polarizer 381 is located on one side of the array substrate 342 opposite to the light guide plate 32
  • the second polarizer 382 is located on the light guide plate 32 and
  • the other side of the light-shielding tape 36 of the embodiment of the present invention may be sandwiched between the optical film 33 and the second polarizer 382, or may be abutted against the edge of the second polarizer 382, thereby preventing A light leakage phenomenon occurs in the OLB area of the liquid crystal display device 30.
  • the other side of the light-shielding tape 36 can only be located in the non-display area of the liquid crystal display device 30.
  • FIG. 4 is a schematic structural view of an embodiment of the display panel 34 shown in FIG. As shown in Figure 4, with LTPS (Low Temperature)
  • the array substrate 342 of the liquid crystal display device 30 includes a substrate 41, a polysilicon layer 42, an insulating layer 43, and a gate along a direction perpendicular to the display panel 34 and toward the light guide plate 32.
  • a pole G an interlayer dielectric 44, a source S and a drain D, a flat layer 45, a common electrode 46, a passivation layer 47, and a pixel electrode 48, wherein:
  • the substrate 41 may include a substrate sheet 411 and a buffer layer 412 formed on the substrate sheet 411.
  • the polysilicon layer 42 is on the buffer layer 412 of the substrate 41, and the insulating layer 43 covers the substrate 41 including the polysilicon layer 42 and the insulating layer.
  • 43 is provided with two first contact holes O1, the gate G is located on the insulating layer 43 corresponding to the region where the polysilicon layer 42 is located, the interlayer dielectric 44 is covered on the insulating layer 43 including the gate G, and the interlayer dielectric 44 is opened.
  • the source S and the drain D are located on the interlayer dielectric 44 and can pass through the two first contact holes O1 and the two second contact holes O2.
  • the color film substrate 341 of the liquid crystal display device 30 is provided with BM (Black) a matrix 343, and a BM layer 343 is disposed corresponding to the TFT (polysilicon layer 42) on the array substrate 342.
  • the opaque BM layer 343 blocks the light emitted from the light exit surface of the light guide plate 32 into the TFT region. Thereby, the display contrast of the liquid crystal display device 30 is ensured.
  • the array substrate 342 of the present embodiment does not need to be provided with the metal light shielding layer 17 for shielding as shown in FIG. 2, and the type and number of the masks for preparing the array substrate 342 can be reduced. , simplify the process and reduce production costs.
  • the gate G of the present embodiment may include a chromium Cr metal layer, an aluminum Al metal layer, and a molybdenum Mo metal layer which are sequentially stacked, since the chromium Cr metal layer itself has The light blocking property is not reflected when the external light is transmitted to the surface of the gate G, so that the display contrast of the liquid crystal display device 30 can be ensured.
  • Fig. 5 is a view showing the configuration of another embodiment of the liquid crystal display device of the present invention.
  • the display panel of the liquid crystal display device of the present embodiment further includes a transparent electrode layer 49, which may be a part of the substrate 41 and located on the substrate sheet 411. Between the buffer layers 412, assuming that the wavelength of the external light is ⁇ , the thickness d of the transparent electrode layer 49 can be set in this embodiment.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

一种液晶显示装置（30），包括导光板（32）、彩膜基板（341）、阵列基板（342）以及遮光胶带（36），其中，导光板（32）的凹槽（321）的侧壁为斜坡，彩膜基板（341）的边缘承载于凹槽（321）的斜坡上，胶框（35）与阵列基板（342）的边缘平齐，遮光胶带（36）用于实现彩膜基板（341）与导光板（32）之间的相对固定。上述结构能够实现液晶显示装置（30）的窄边框以及无边框设计，且包含的显示面板（34）的结构简单，从而能够简化制程并降低生产成本。

Description

一种液晶显示装置
【技术领域】
本发明涉及显示技术领域，具体涉及一种液晶显示装置。
【背景技术】
请参阅图1所示的现有的液晶显示装置10，其阵列基板11邻近导光板13设置且彩膜基板12远离导光板13设置，外部胶框14将显示面板15以及背光模组固定，并且为了防止显示面板15在胶框14内出现相对滑动，通常会在胶框14上设计沟槽141以将显示面板15包住，但这样会增大胶框14所占据的外部空间，不利于液晶显示装置10的窄边框及无边框设计。进一步结合图2所示，为遮挡从导光板13出射的光进入阵列基板11的TFT（Thin Film Transistor，薄膜晶体管）16所在区域以确保液晶显示装置10的显示对比度，TFT16的下方必须设置金属遮光（Layer of Shading，LS）层17，这无疑会使得显示面板15的结构复杂，从而增加整个液晶显示装置10的制程并提高生产成本。
【发明内容】
本发明实施例提供一种窄边框或无边框的液晶显示装置。
本发明一实施例的液晶显示装置，包括：背板；导光板，位于背板上且具有凹槽，凹槽的侧壁为斜坡，凹槽的底面为导光板的出光面；光学膜片，位于凹槽的底面上；显示面板，位于光学膜片上且包括阵列基板和彩膜基板，彩膜基板邻近光学膜片且其边缘承载于凹槽的斜坡上；胶框，围绕导光板设置，胶框的一端固定于背板上、另一端与阵列基板固定且与阵列基板的边缘平齐；灯源，位于胶框和导光板的侧面之间，导光板的侧面为导光板的入光面；遮光胶带，实现彩膜基板与导光板之间的相对固定，遮光胶带的一边与胶框相抵接、另一边与光学膜片的边缘相抵接或相重叠；其中，沿垂直于显示面板且朝向导光板的方向，阵列基板包括：基体；多晶硅层，位于基体上；绝缘层，覆盖于包括多晶硅层的基体上，且开设有两个第一接触孔；栅极，位于对应于多晶硅层的绝缘层上；层间介质，覆盖于包括栅极的绝缘层上，且开设有与两个第一接触孔对应的两个第二接触孔；源极和漏极，位于层间介质上且可通过两个第一接触孔和两个第二接触孔与多晶硅层的两端电连接；平坦层，覆盖于包括源极和漏极的层间介质上，且开设有第三接触孔；像素电极，对应位于平坦层的上方，且像素电极可通过第三接触孔与漏极或源极电连接。
其中，液晶显示装置还包括第一偏光片和第二偏光片，第一偏光片位于阵列基板背向导光板的一侧，第二偏光片位于导光板和光学膜片之间，所述遮光胶带的另一边夹持于光学膜片和第二偏光片之间，或者与所述第二偏光片的边缘相抵接。
其中，沿垂直于显示面板且朝向导光板的方向，阵列基板还包括：公共电极，位于除对应阵列基板的TFT之外的平坦层上；钝化层，位于平坦层和公共电极上，且未覆盖第三接触孔；像素电极位于钝化层上。
其中，沿垂直于显示面板且朝向导光板的方向，栅极包括依次层叠的铬金属层、铝金属层以及钼金属层。
其中，基体包括衬底板材及形成于衬底板材上的缓冲层。
其中，基体进一步包括位于衬底板材与缓冲层之间的厚度为d的透明电极层，且d = n * λ，所述λ为从阵列基板背向导光板一侧入射的入射光的波长，n为正整数。
其中，彩膜基板包括黑矩阵层，黑矩阵层与多晶硅层相对应。
其中，沿垂直于显示面板且朝向导光板的方向，光学膜片的投影区域位于所述凹槽的底面所在区域之内。
本发明另一实施例的液晶显示装置，包括：背板；导光板，位于背板上且具有凹槽，凹槽的侧壁为斜坡，凹槽的底面为导光板的出光面；光学膜片，位于凹槽的底面上；显示面板，位于光学膜片上且包括阵列基板和彩膜基板，彩膜基板邻近光学膜片且其边缘承载于凹槽的斜坡上；胶框，围绕导光板设置，胶框的一端固定于背板上、另一端与阵列基板固定且与阵列基板的边缘平齐；遮光胶带，实现彩膜基板与导光板之间的相对固定，遮光胶带的一边与胶框相抵接、另一边与光学膜片的边缘相抵接或相重叠。
其中，液晶显示装置还包括灯源，灯源位于胶框和导光板的侧面之间，导光板的侧面为导光板的入光面。
其中，液晶显示装置还包括第一偏光片和第二偏光片，第一偏光片位于阵列基板背向导光板的一侧，第二偏光片位于导光板和光学膜片之间，所述遮光胶带的另一边夹持于光学膜片和第二偏光片之间，或者与所述第二偏光片的边缘相抵接。
其中，沿垂直于显示面板且朝向导光板的方向，阵列基板包括：基体；多晶硅层，位于基体上；绝缘层，覆盖于包括多晶硅层的基体上，且开设有两个第一接触孔；栅极，位于对应于多晶硅层的绝缘层上；层间介质，覆盖于包括栅极的绝缘层上，且开设有与两个第一接触孔对应的两个第二接触孔；源极和漏极，位于层间介质上且可通过两个第一接触孔和两个第二接触孔与多晶硅层的两端电连接；平坦层，覆盖于包括源极和漏极的层间介质上，且开设有第三接触孔；像素电极，对应位于平坦层的上方，且像素电极可通过第三接触孔与漏极或源极电连接。
其中，沿垂直于显示面板且朝向导光板的方向，阵列基板还包括：公共电极，位于除对应阵列基板的TFT之外的平坦层上；钝化层，位于平坦层和公共电极上，且未覆盖第三接触孔；像素电极位于钝化层上。
其中，沿垂直于显示面板且朝向导光板的方向，栅极包括依次层叠的铬金属层、铝金属层以及钼金属层。
其中，基体包括衬底板材及形成于衬底板材上的缓冲层。
其中，基体进一步包括位于衬底板材与缓冲层之间的厚度为d的透明电极层，且d = n * λ，所述λ为从阵列基板背向导光板一侧入射的入射光的波长，n为正整数。
其中，彩膜基板包括黑矩阵层，黑矩阵层与多晶硅层相对应。
其中，沿垂直于显示面板且朝向导光板的方向，光学膜片的投影区域位于所述凹槽的底面所在区域之内。
本发明实施例的液晶显示装置，将彩膜基板邻近导光板设置，通过遮光胶带和导光板自身具有的凹槽即可承载固定彩膜基板，此时阵列基板的边缘与胶框的边缘平齐即可，最大程度的减小了胶框的宽度，从而有利于液晶显示装置的窄边框及无边框设计。
【附图说明】
图1是现有技术的液晶显示装置一实施例的结构示意图；
图2是图1所示的显示面板一实施例的结构示意图；
图3是本发明的液晶显示装置一实施例的结构示意图；
图4是图3所示的显示面板一实施例的结构示意图；
图5是本发明的液晶显示装置另一实施例的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明所提供的示例性的实施例的技术方案进行清楚、完整地描述。
请参阅图3所示，本发明实施例的液晶显示装置30包括背板31、导光板32、光学膜片33、显示面板34、胶框35以及遮光胶带36，其中，导光板32位于背板31上且设置有凹槽321，所述凹槽321的侧壁为斜坡，所述凹槽321的底面为导光板32的出光面；光学膜片33位于所述凹槽321的底面上，其面积可以小于或等于所述凹槽321的底面的面积，优选沿垂直于显示面板34且朝向导光板32的方向（如图中箭头所示方向），光学膜片33的投影区域位于所述凹槽321的底面所在区域之内，当然本发明实施例的光学膜片33的面积也可以大于所述凹槽321的底面的面积；显示面板34位于光学膜片33上且包括彩膜基板341和阵列基板342；胶框35围绕导光板32的四周设置，胶框35的一端固定于背板31上且另一端与阵列基板342相固定。
与图1所示实施例的一不同之处在于，本实施例设计彩膜基板341邻近光学膜片33（或导光板32），彩膜基板341的边缘承载于导光板32的凹槽321的斜坡上，并且，不透光的遮光胶带36的一边与胶框35相抵接、另一边与光学膜片33的边缘相抵接或相重叠，不仅能够防止液晶显示装置30的OLB（Outer Lead Bonding，外引线焊接）区域出现漏光现象，而且可以利用遮光胶带36上自带的黏胶实现彩膜基板341和导光板32之间的相对固定，从而胶框35无需设置如图1所示的沟槽141即可将显示面板34固定于导光板32的出光面上，在此基础上，胶框35与阵列基板342的边缘平齐，可以最大程度的减小胶框35的宽度，从而有利于液晶显示装置30的窄边框及无边框设计。
在上述发明目的基础上，本实施例的液晶显示装置30可以为图3示的侧入式液晶显示装置，即，液晶显示装置30的灯源37位于胶框35和导光板32的侧面之间，此时导光板32的侧面为导光板32的入光面且与出光面相垂直，当然，也可以为直下式液晶显示装置，即，液晶显示装置30的灯源37位于背板31和导光板32的底面之间，此时导光板32的底面为导光板32的入光面且与出光面相对。
进一步地，所述液晶显示装置30还包括第一偏光片381和第二偏光片382，第一偏光片381位于阵列基板342背向导光板32的一侧，第二偏光片382位于导光板32和光学膜片33之间，本发明实施例的遮光胶带36的另一边可以夹持于光学膜片33和第二偏光片382之间，或者与第二偏光片382的边缘相抵接，均能够防止所述液晶显示装置30的OLB区域出现漏光现象。需要指出的是，遮光胶带36的另一边只能位于所述液晶显示装置30的非显示区域。
应该理解到，图3所示的液晶显示装置30仅为阐述本发明实施例的发明目的示意图，其并未示出的其他结构可参阅现有技术。
图4是图3所示的显示面板34一实施例的结构示意图。如图4所示，以LTPS（Low Temperature Poly-silicon,低温多晶硅）液晶显示装置为例，沿垂直于显示面板34且朝向导光板32的方向，所述液晶显示装置30的阵列基板342包括基体41、多晶硅层42、绝缘层43、栅极G、层间介质44、源极S和漏极D、平坦层45、公共电极46、钝化层47以及像素电极48，其中：
基体41可以包括衬底板材411及形成于衬底板材411上的缓冲层412，多晶硅层42位于基体41的缓冲层412上，绝缘层43覆盖于包括多晶硅层42的基体41上，且绝缘层43开设有两个第一接触孔O1，栅极G位于对应于多晶硅层42所在区域的绝缘层43上，层间介质44覆盖于包括栅极G的绝缘层43上，且层间介质44开设有与两个第一接触孔O1对应的两个第二接触孔O2，源极S和漏极D位于层间介质44上且可通过两个第一接触孔O1和两个第二接触孔O2与多晶硅层42的两端电连接，平坦层45覆盖于包括源极S和漏极D的层间介质44上，且平坦层45开设有第三接触孔O3，公共电极46位于除对应阵列基板342的TFT（包括栅极G、源极S和漏极D）所在区域之外的平坦层45上，钝化层47位于平坦层46和公共电极46上，且钝化层47未覆盖第三接触孔O3，像素电极48位于钝化层47上，且像素电极48可以通过第三接触孔O3与源极S电连接，当然像素电极48也可以通过第三接触孔O3与漏极D电连接而非与源极S电连接。
所述液晶显示装置30的彩膜基板341上设置有BM（Black Matrix，黑矩阵）层343，且BM层343与阵列基板342上的TFT（多晶硅层42）对应设置，不透光的BM层343可遮挡从导光板32的出光面出射的光进入TFT所在区域，从而确保所述液晶显示装置30的显示对比度。相比较于图2所示现有的阵列基板11，本实施例的阵列基板342无需设置如图2所示的用以遮光的金属遮光层17，可以减少制备阵列基板342的光罩类型和数量，简化制程并降低生产成本。
并且，沿垂直于显示面板34且朝向导光板32的方向，本实施例的栅极G可包括依次层叠的铬Cr金属层、铝Al金属层及钼Mo金属层，由于铬Cr金属层本身具有遮光性，当外界的光传递至栅极G的表面时不会被反射，从而可确保所述液晶显示装置30的显示对比度。
图5是本发明的液晶显示装置另一实施例的结构示意图。如图5所示，在上述实施例的描述基础上，本实施例的液晶显示装置的显示面板进一步包括有一透明电极层49，透明电极层49可以作为基体41的一部分且位于衬底板材411与缓冲层412之间，假设外界的光的波长为λ，则本实施例可以设置透明电极层49的厚度d = n * λ，所述n为正整数，此时外界的光与反射之后且穿出透明电极层49的光相叠加，两个光的振幅相等且传播方向相反，因此两个光相互抵消，从而可以确保所述液晶显示装置50的显示对比度。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (18)

  1. 一种液晶显示装置，其中，包括：
    背板；
    导光板，位于所述背板上且具有凹槽，所述凹槽的侧壁为斜坡，所述凹槽的底面为所述导光板的出光面；
    光学膜片，位于所述凹槽的底面上；
    显示面板，位于所述光学膜片上且包括阵列基板和彩膜基板，所述彩膜基板邻近所述光学膜片且其边缘承载于所述凹槽的所述斜坡上；
    胶框，围绕所述导光板设置，所述胶框的一端固定于所述背板上、另一端与所述阵列基板固定且与所述阵列基板的边缘平齐；
    灯源，位于所述胶框和所述导光板的侧面之间，所述导光板的侧面为所述导光板的入光面；
    遮光胶带，实现所述彩膜基板与所述导光板之间的相对固定，所述遮光胶带的一边与所述胶框相抵接、另一边与所述光学膜片的边缘相抵接或相重叠；
    其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述阵列基板包括：
    基体；
    多晶硅层，位于所述基体上；
    绝缘层，覆盖于包括所述多晶硅层的所述基体上，且开设有两个第一接触孔；
    栅极，位于对应于所述多晶硅层的所述绝缘层上；
    层间介质，覆盖于包括所述栅极的所述绝缘层上，且开设有与两个所述第一接触孔对应的两个第二接触孔；
    源极和漏极，位于所述层间介质上且可通过所述两个第一接触孔和两个所述第二接触孔与所述多晶硅层的两端电连接；
    平坦层，覆盖于包括所述源极和所述漏极的所述层间介质上，且开设有第三接触孔；
    像素电极，对应位于所述平坦层的上方，且所述像素电极可通过所述第三接触孔与所述漏极或所述源极电连接。
  2. 根据权利要求1所述的液晶显示装置，其中，所述液晶显示装置还包括第一偏光片和第二偏光片，所述第一偏光片位于所述阵列基板背向所述导光板的一侧，所述第二偏光片位于所述导光板和所述光学膜片之间，所述遮光胶带的另一边夹持于所述光学膜片和所述第二偏光片之间，或者与所述第二偏光片的边缘相抵接。
  3. 根据权利要求1所述的液晶显示装置，其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述阵列基板还包括：
    公共电极，位于除对应所述阵列基板的TFT之外的所述平坦层上；
    钝化层，位于所述平坦层和所述公共电极上，且未覆盖所述第三接触孔；
    其中，所述像素电极位于所述钝化层上。
  4. 根据权利要求1所述的液晶显示装置，其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述栅极包括依次层叠的铬金属层、铝金属层以及钼金属层。
  5. 根据权利要求1所述的液晶显示装置，其中，所述基体包括衬底板材及形成于所述衬底板材上的缓冲层。
  6. 根据权利要求5所述的液晶显示装置，其中，所述基体进一步包括位于所述衬底板材与所述缓冲层之间的厚度为d的透明电极层，且所述d = n * λ，其中所述λ为从所述阵列基板背向所述导光板一侧入射的入射光的波长，所述n为正整数。
  7. 根据权利要求1所述的液晶显示装置，其中，所述彩膜基板包括黑矩阵层，所述黑矩阵层与所述多晶硅层相对应。
  8. 根据权利要求1所述的液晶显示装置，其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述光学膜片的投影区域位于所述凹槽的底面所在区域之内。
  9. 一种液晶显示装置，其中，包括：
    背板；
    导光板，位于所述背板上且具有凹槽，所述凹槽的侧壁为斜坡，所述凹槽的底面为所述导光板的出光面；
    光学膜片，位于所述凹槽的底面上；
    显示面板，位于所述光学膜片上且包括阵列基板和彩膜基板，所述彩膜基板邻近所述光学膜片且其边缘承载于所述凹槽的所述斜坡上；
    胶框，围绕所述导光板设置，所述胶框的一端固定于所述背板上、另一端与所述阵列基板固定且与所述阵列基板的边缘平齐；
    遮光胶带，实现所述彩膜基板与所述导光板之间的相对固定，所述遮光胶带的一边与所述胶框相抵接、另一边与所述光学膜片的边缘相抵接或相重叠。
  10. 根据权利要求9所述的液晶显示装置，其中，所述液晶显示装置还包括灯源，所述灯源位于所述胶框和所述导光板的侧面之间，所述导光板的侧面为所述导光板的入光面。
  11. 根据权利要求9所述的液晶显示装置，其中，所述液晶显示装置还包括第一偏光片和第二偏光片，所述第一偏光片位于所述阵列基板背向所述导光板的一侧，所述第二偏光片位于所述导光板和所述光学膜片之间，所述遮光胶带的另一边夹持于所述光学膜片和所述第二偏光片之间，或者与所述第二偏光片的边缘相抵接。
  12. 根据权利要求9所述的液晶显示装置，其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述阵列基板包括：
    基体；
    多晶硅层，位于所述基体上；
    绝缘层，覆盖于包括所述多晶硅层的所述基体上，且开设有两个第一接触孔；
    栅极，位于对应于所述多晶硅层的所述绝缘层上；
    层间介质，覆盖于包括所述栅极的所述绝缘层上，且开设有与两个所述第一接触孔对应的两个第二接触孔；
    源极和漏极，位于所述层间介质上且可通过所述两个第一接触孔和两个所述第二接触孔与所述多晶硅层的两端电连接；
    平坦层，覆盖于包括所述源极和所述漏极的所述层间介质上，且开设有第三接触孔；
    像素电极，对应位于所述平坦层的上方，且所述像素电极可通过所述第三接触孔与所述漏极或所述源极电连接。
  13. 根据权利要求12所述的液晶显示装置，其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述阵列基板还包括：
    公共电极，位于除对应所述阵列基板的TFT之外的所述平坦层上；
    钝化层，位于所述平坦层和所述公共电极上，且未覆盖所述第三接触孔；
    其中，所述像素电极位于所述钝化层上。
  14. 根据权利要求12所述的液晶显示装置，其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述栅极包括依次层叠的铬金属层、铝金属层以及钼金属层。
  15. 根据权利要求12所述的液晶显示装置，其中，所述基体包括衬底板材及形成于所述衬底板材上的缓冲层。
  16. 根据权利要求15所述的液晶显示装置，其中，所述基体进一步包括位于所述衬底板材与所述缓冲层之间的厚度为d的透明电极层，且所述d = n * λ，其中所述λ为从所述阵列基板背向所述导光板一侧入射的入射光的波长，所述n为正整数。
  17. 根据权利要求12所述的液晶显示装置，其中，所述彩膜基板包括黑矩阵层，所述黑矩阵层与所述多晶硅层相对应。
  18. 根据权利要求9所述的液晶显示装置，其中，沿垂直于所述显示面板且朝向所述导光板的方向，所述光学膜片的投影区域位于所述凹槽的底面所在区域之内。
PCT/CN2015/084321 2015-07-10 2015-07-17 一种液晶显示装置 Ceased WO2017008313A1 (zh)

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