WO2011038562A1 - Direct-type ultra-thin liquid crystal display device - Google Patents

Direct-type ultra-thin liquid crystal display device Download PDF

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Publication number
WO2011038562A1
WO2011038562A1 PCT/CN2009/076162 CN2009076162W WO2011038562A1 WO 2011038562 A1 WO2011038562 A1 WO 2011038562A1 CN 2009076162 W CN2009076162 W CN 2009076162W WO 2011038562 A1 WO2011038562 A1 WO 2011038562A1
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WO
WIPO (PCT)
Prior art keywords
display device
liquid crystal
crystal display
reflective film
pcb board
Prior art date
Application number
PCT/CN2009/076162
Other languages
French (fr)
Chinese (zh)
Inventor
宋义
苏遵惠
Original Assignee
深圳帝光电子有限公司
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Publication of WO2011038562A1 publication Critical patent/WO2011038562A1/en

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G02F1/133612—Electrical details

Definitions

  • the present invention is applied to display fields such as ⁇ , computer integrated devices, displays, and the like, and particularly relates to a direct type ultra-thin liquid crystal display device.
  • FIG. 1 shows a conventional direct type liquid crystal display device comprising a display screen 91, a diffusion film 92, a light source 93, a reflective film 94, a PCB board 95, and a plurality of electronic components 951 disposed on the PCB board 95.
  • the display screen 91, the diffusion film 92, the light source 93 and the reflective film 94 are disposed in a cavity between the face cover 96 and the partition plate 97, and the ⁇ CB plate 95 and the electronic component 951 thereon are disposed on the partition plate.
  • the light source 93 is disposed on the surface of the reflective film 94 to form a direct vertical light, and the light passes through the diffusion film 92 to become soft and uniform, and then projected onto the display screen. 91, thereby realizing the image display function.
  • the direct type liquid crystal display device since the PCB board 95 and the electronic component 951 thereon are disposed in the cavity formed by the spacer 97 and the back cover 98, the occupied space is large, the thickness of the display device is increased, and it is difficult to realize the liquid crystal display device.
  • An object of the present invention is to provide a direct-type ultra-thin liquid crystal display device which can significantly reduce the overall thickness in view of the deficiencies of the prior art.
  • a direct-type ultra-thin liquid crystal display device comprising a cover and a back cover, wherein the cover and the back cover cooperate to form a cavity, wherein the cavity is provided with a display screen, a diffusion film, a light source, a reflective film, and A PCB board is provided with a plurality of electronic components, and the PCB board and circuit components thereon are disposed between the light sources.
  • the present invention sets the PCB board and the circuit components thereon in the space between the light source and the light source, and the concept is ingenious, which significantly reduces the thickness of the display device, and realizes
  • the direct type liquid crystal display device is ultra-thin.
  • FIG. 1 is a schematic diagram of a direct type liquid crystal display device provided by the prior art
  • FIG. 2A is a schematic diagram of a direct-type liquid crystal display device for a sawtooth-shaped reflective film and a CCFL light source according to a first embodiment of the present invention
  • FIG. 2B is a schematic diagram of a direct-lit liquid crystal display device using a forward-reverse-phase trapezoidal reflective film and a CCFL light source according to a first embodiment of the present invention
  • FIG. 3 is a schematic view of a direct type liquid crystal display device using a zigzag reflective film and an LED light source according to a first embodiment of the present invention
  • Fig. 4 is a schematic view showing a direct type liquid crystal display device for a planar reflection film and a CCFL light source according to a second embodiment of the present invention.
  • the invention provides a direct type ultra-thin liquid crystal display device, comprising a cover and a back cover, wherein the cover and the back cover cooperate to form a cavity, wherein the cavity is provided with a display screen, a diffusion film, and a light source. And a reflective film and a PCB board.
  • the PCB board is provided with a plurality of electronic components, and the PCB board and circuit components thereon are disposed between the light sources.
  • the invention has the PCB board and the circuit components thereon disposed in the space between the light source and the light source, and the concept is ingenious, the thickness of the display device is remarkably reduced, and the direct type liquid crystal is realized.
  • the display device is ultra-thin.
  • a direct type ultra-thin liquid crystal display device includes a face cover 11 and a back cover 12, and the face cover 11 and the back cover 12 are provided.
  • the display body is provided with a display screen 13, a diffusion film 14, a light source 15, a reflective film 16 and a PCB board 17, and the PCB board 17 is provided with a plurality of electronic components 171, and the reflective film 16 is a non-planar convex-concave structure
  • the light source 15 is disposed in the cavity 18 formed between the reflective film 16 and the diffusion film 14 and located at a recess of the reflective film 16, the PCB board 17 and the circuit thereon
  • the element 171 is disposed in the cavity 19 formed between the reflective film 16 and the back cover 12 and is fixed to the back cover 12.
  • the reflective film 16 is designed as a non-planar convex and concave structure, and the cavity 19 formed between the reflective film 16 and the back cover 12 is used to place the PCB board 17 and The circuit element 171 thereon is ingeniously designed to significantly reduce the thickness of the display device, and realizes ultra-thinning of the direct type liquid crystal display device.
  • the reflective film 16 of the present invention has a zigzag shape (as shown in FIG. 2A), and may of course be wavy.
  • FIG. 2B a trapezoidal structure (shown in FIG. 2B) or other non-planar convex and concave structures that are opposite to each other, and it is necessary to ensure that the light emitted by the light source 15 can cover every part of the diffusion film 14, and the light can pass through the diffusion film 14 It becomes soft and uniform, and then uniformly projected onto the display screen 13, so that the display screen 13 produces a good image.
  • the PCB board 17 and the circuit component 171 thereon are dispersedly disposed in the cavity 19 formed between the reflective film 16 and the back cover 12 (as shown in FIGS. 2A and 2B ).
  • the PCB board 17 and the circuit component 171 thereon may also be integrally disposed in the cavity 19 formed between the reflective film 16 and the back cover 12, and are all within the scope of the present invention.
  • the light source 15 can use a CCFL light source (as shown in FIGS. 2A and 2B) or an LED light source (shown in FIG. 3) to realize imaging of the liquid crystal display device.
  • a CCFL light source as shown in FIGS. 2A and 2B
  • an LED light source shown in FIG. 3
  • a heat conducting insulating sheet 110 is disposed between the PCB board 17 and the back cover 12, and the heat conducting insulating sheet 110 can dissipate heat and enthalpy generated by the electronic component 171 on the PCB board 17;
  • the PCB board 17 and the back cover 12 can be insulated to prevent the PCB board 17 from being electrically conductive to the outside to cause an accident.
  • heat can be transferred to the outside of the display device in a natural convection manner.
  • the thermal insulating sheet 110 may not be disposed between the PCB board 17 and the back cover 12, It belongs to the scope of protection of the present invention.
  • the face cover 11 and the rear cover 12 may be separately manufactured and then assembled by screws; alternatively, the face cover 11 and the rear cover 12 may be integrally formed to form a unitary casing.
  • a direct-type ultra-thin liquid crystal display device includes a cover 21 and a rear cover 22, and the cover 21 and the rear cover 22 cooperate to form a cavity.
  • a display panel 23, a diffusion film 24, a light source 25, a reflective film 26, and a PCB board 27 are disposed in the cavity.
  • the PCB board 27 is provided with a plurality of electronic components 27 1
  • the reflective film 26 is a planar structure.
  • the light source 25 is disposed in the cavity 28 formed between the reflective film 26 and the diffusion film 24 and located on the reflective film 26, and the PCB board 27 and the circuit component 271 thereon are dispersedly disposed on the light sources. Between 25 and located on the reflective film 26.
  • the second embodiment of the present invention disperses the PCB board 27 and the circuit component 271 thereon on the reflective film 26 and is located between the light sources 25, which is cleverly designed and significantly reduces the display.
  • the thickness of the device realizes ultra-thinness of the direct type liquid crystal display device.
  • the circuit component 271 on the PCB board 27 is coated with a light reflecting material, and the light of the light source 25 is irradiated onto the circuit component 271, and the circuit component 271 can reflect the light to On the diffusion film 24, the utilization of the light of the light source 25 is remarkably improved.
  • a heat conducting insulating sheet 29 is disposed between the PCB board 27 and the back cover 22, and the heat conducting insulating sheet 29 can dissipate heat and enthalpy generated by the electronic component 271 on the PCB board 27;
  • the PCB board 27 and the reflective film 26 can be insulated to prevent the PCB board 27 from being electrically conductive to the outside to cause an accident.
  • heat can be transferred to the outside of the display device in a natural convection manner.
  • the thermal insulation insulating sheet 29 may not be disposed between the PCB board 27 and the reflective film 26, and is within the protection scope of the present invention.
  • the light source 25 can also use a CCFL light source (as shown in FIG. 4) or an LED light source (not shown) to realize imaging of the liquid crystal display device.
  • the face cover 21 and the back cover 22 may be separately manufactured and then assembled by screws; alternatively, the face cover 21 and the back cover 22 may be integrally formed to form a unitary casing.

Abstract

A direct-type ultra-thin liquid crystal display device (LCD)，which can be used for TV, computer, etc., is provided. The LCD device includes a housing that consists of a front frame and a back plate. In the said housing, a display panel, a diffuser, multiple light sources, a reflector and a printed circuit board (PCB) with several electronic components are positioned. The electronic components on the said PCB are located between the said light sources. In this way, the thickness of the direct-type LCD is reduced.

Description

说明书  Instruction manual
Title of Invention:直下式超薄液晶显示装置 技术领域 Title of Invention: Direct-type ultra-thin liquid crystal display device
技术领域  Technical field
[1] 本发明应用于 τν、 电脑一体机、 显示器等显示领域， 尤其涉及一种直下式超 薄液晶显示装置。  [1] The present invention is applied to display fields such as τν, computer integrated devices, displays, and the like, and particularly relates to a direct type ultra-thin liquid crystal display device.
背景技术  Background technique
背景技术  Background technique
[2] 现有的液晶显示装置一般分为侧光式和直下式两种。 对于中小尺寸， 侧光式显 示装置具有轻、 薄、 耗电低等优点； 但是， 随着科技水平的发展， 对大尺寸显 示装置的需要日趋高涨， 而大尺寸侧光式显示装置容纳光源数目有限， 光利用 率较低， 无法达到大尺寸液晶显示装置的亮度要求。 而大尺寸的直下式显示装 置， 可以容纳较多的光源， 且光利用率高， 因此得到人们的青睐， 但现有的大 尺寸直下式显示装置比较厚， 无法满足人们对显示装置超薄化的要求。  [2] Existing liquid crystal display devices are generally classified into two types: side light type and direct type. For small and medium size, the edge-lit display device has the advantages of lightness, thinness, low power consumption, etc. However, with the development of technology, the demand for large-size display devices is increasing, and the number of large-size side-light display devices accommodating light sources Limited, low light utilization, unable to meet the brightness requirements of large-size liquid crystal display devices. The large-sized direct-type display device can accommodate more light sources and has high light utilization efficiency, so it is favored by people, but the existing large-size direct-type display device is relatively thick, and cannot satisfy the ultra-thinness of the display device. Requirements.
[3] 图 1所示为现有的直下式液晶显示装置， 其由显示屏 91、 扩散膜 92、 光源 93、 反射膜 94、 PCB板 95以及设于该 PCB板 95上的若干电子元件 951组成， 所述显示 屏 91、 扩散膜 92、 光源 93和反射膜 94设于面盖 96和隔板 97之间的腔体内， 所述 Ρ CB板 95及其上的电子元件 951设于隔板 97和后盖 98之间的腔体内的一支架 99上， 光源 93设于反射膜 94的表面， 形成直下式的垂直入光， 光线经过扩散膜 92后变 得柔和均匀， 然后投射到显示屏 91上， 从而实现图像显示功能。 这种直下式液 晶显示装置， 由于 PCB板 95及其上的电子元件 951设于隔板 97和后盖 98形成的腔 体内， 占用空间大， 增加了显示装置的厚度， 难于实现液晶显示装置的超薄化 对发明的公开  [3] FIG. 1 shows a conventional direct type liquid crystal display device comprising a display screen 91, a diffusion film 92, a light source 93, a reflective film 94, a PCB board 95, and a plurality of electronic components 951 disposed on the PCB board 95. The display screen 91, the diffusion film 92, the light source 93 and the reflective film 94 are disposed in a cavity between the face cover 96 and the partition plate 97, and the ΡCB plate 95 and the electronic component 951 thereon are disposed on the partition plate. On a bracket 99 in the cavity between the 97 and the back cover 98, the light source 93 is disposed on the surface of the reflective film 94 to form a direct vertical light, and the light passes through the diffusion film 92 to become soft and uniform, and then projected onto the display screen. 91, thereby realizing the image display function. In the direct type liquid crystal display device, since the PCB board 95 and the electronic component 951 thereon are disposed in the cavity formed by the spacer 97 and the back cover 98, the occupied space is large, the thickness of the display device is increased, and it is difficult to realize the liquid crystal display device. Ultra-thin disclosure of the invention
技术问题  technical problem
[4] 本发明的目的在于针对现有技术的不足， 提供一种可显著降低整体厚度的直下 式超薄液晶显示装置。 技术解决方案 [4] An object of the present invention is to provide a direct-type ultra-thin liquid crystal display device which can significantly reduce the overall thickness in view of the deficiencies of the prior art. Technical solution
[5] 一种直下式超薄液晶显示装置， 包括面盖及后盖， 所述面盖和后盖配合形成一 腔体， 所述腔体内设有显示屏、 扩散膜、 光源、 反射膜及 PCB板， 所述 PCB板上 设有若干电子元件， 所述 PCB板及其上的电路元件设于所述各光源之间。  [5] A direct-type ultra-thin liquid crystal display device comprising a cover and a back cover, wherein the cover and the back cover cooperate to form a cavity, wherein the cavity is provided with a display screen, a diffusion film, a light source, a reflective film, and A PCB board is provided with a plurality of electronic components, and the PCB board and circuit components thereon are disposed between the light sources.
有益效果  Beneficial effect
[6] 与现有的直下式液晶显示装置相比， 本发明将 PCB板及其上的电路元件设于光 源与光源之间的空间内， 构思巧妙， 显著降低了显示装置的厚度， 实现了直下 式液晶显示装置的超薄化。  [6] Compared with the conventional direct type liquid crystal display device, the present invention sets the PCB board and the circuit components thereon in the space between the light source and the light source, and the concept is ingenious, which significantly reduces the thickness of the display device, and realizes The direct type liquid crystal display device is ultra-thin.
附图说明  DRAWINGS
[7] 图 1是现有技术提供的直下式液晶显示装置的示意图；  [7] FIG. 1 is a schematic diagram of a direct type liquid crystal display device provided by the prior art;
[8] 图 2A是本发明实施例一提供的釆用锯齿形反射膜和 CCFL光源的直下式液晶显 示装置的示意图；  2A is a schematic diagram of a direct-type liquid crystal display device for a sawtooth-shaped reflective film and a CCFL light source according to a first embodiment of the present invention;
[9] 图 2B是本发明实施例一提供的釆用正反相接的梯形反射膜和 CCFL光源的直下 式液晶显示装置的示意图；  [00] FIG. 2B is a schematic diagram of a direct-lit liquid crystal display device using a forward-reverse-phase trapezoidal reflective film and a CCFL light source according to a first embodiment of the present invention;
[10] 图 3是本发明实施例一提供的釆用锯齿形反射膜和 LED光源的直下式液晶显示 装置的示意图； 3 is a schematic view of a direct type liquid crystal display device using a zigzag reflective film and an LED light source according to a first embodiment of the present invention;
[11] 图 4是本发明实施例二提供的釆用平面反射膜和 CCFL光源的直下式液晶显示装 置的示意图。  Fig. 4 is a schematic view showing a direct type liquid crystal display device for a planar reflection film and a CCFL light source according to a second embodiment of the present invention.
本发明的实施方式  Embodiments of the invention
[12] 为了使本发明的目的、 技术方案及优点更加清楚明白， 以下结合附图及实施例 ， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具体实施例仅仅用 以解释本发明， 并不用于限定本发明。  The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[13] 本发明提供的一种直下式超薄液晶显示装置， 包括面盖及后盖， 所述面盖和后 盖配合形成一腔体， 所述腔体内设有显示屏、 扩散膜、 光源、 反射膜及 PCB板， 所述 PCB板上设有若干电子元件， 所述 PCB板及其上的电路元件设于所述各光源 之间。 与现有的直下式液晶显示装置相比， 本发明将 PCB板及其上的电路元件设 于光源与光源之间的空间内， 构思巧妙， 显著降低了显示装置的厚度， 实现了 直下式液晶显示装置的超薄化。 [14] 以下结合具体实施例对本发明作详细说明。 [13] The invention provides a direct type ultra-thin liquid crystal display device, comprising a cover and a back cover, wherein the cover and the back cover cooperate to form a cavity, wherein the cavity is provided with a display screen, a diffusion film, and a light source. And a reflective film and a PCB board. The PCB board is provided with a plurality of electronic components, and the PCB board and circuit components thereon are disposed between the light sources. Compared with the existing direct type liquid crystal display device, the invention has the PCB board and the circuit components thereon disposed in the space between the light source and the light source, and the concept is ingenious, the thickness of the display device is remarkably reduced, and the direct type liquid crystal is realized. The display device is ultra-thin. [14] The present invention will be described in detail below in conjunction with specific embodiments.
[15] 实施例一： [15] Example 1:
[16] 如图 2A、 图 2B和图 3所示， 本发明实施例一提供的一种直下式超薄液晶显示装 置， 包括面盖 11及后盖 12， 所述面盖 11和后盖 12配合形成一腔体， 所述腔体内 设有显示屏 13、 扩散膜 14、 光源 15、 反射膜 16及 PCB板 17， 所述 PCB板 17上设有 若干电子元件 171， 所述反射膜 16为非平面的凸凹结构， 所述光源 15设于所述反 射膜 16与扩散膜 14之间形成的腔体 18内且位于所述反射膜 16的凹陷处， 所述 PCB 板 17及其上的电路元件 171设于所述反射膜 16与后盖 12之间形成的腔体 19内并固 设于所述后盖 12上。 与现有的直下式液晶显示装置相比， 本发明实施例一将反 射膜 16设计成非平面的凸凹结构， 利用反射膜 16与后盖 12之间形成的腔体 19来 放置 PCB板 17及其上的电路元件 171， 构思巧妙， 显著降低了显示装置的厚度， 实现了直下式液晶显示装置的超薄化。  As shown in FIG. 2A, FIG. 2B and FIG. 3, a direct type ultra-thin liquid crystal display device according to a first embodiment of the present invention includes a face cover 11 and a back cover 12, and the face cover 11 and the back cover 12 are provided. Forming a cavity, the display body is provided with a display screen 13, a diffusion film 14, a light source 15, a reflective film 16 and a PCB board 17, and the PCB board 17 is provided with a plurality of electronic components 171, and the reflective film 16 is a non-planar convex-concave structure, the light source 15 is disposed in the cavity 18 formed between the reflective film 16 and the diffusion film 14 and located at a recess of the reflective film 16, the PCB board 17 and the circuit thereon The element 171 is disposed in the cavity 19 formed between the reflective film 16 and the back cover 12 and is fixed to the back cover 12. Compared with the conventional direct type liquid crystal display device, in the first embodiment of the present invention, the reflective film 16 is designed as a non-planar convex and concave structure, and the cavity 19 formed between the reflective film 16 and the back cover 12 is used to place the PCB board 17 and The circuit element 171 thereon is ingeniously designed to significantly reduce the thickness of the display device, and realizes ultra-thinning of the direct type liquid crystal display device.
[17] 具体地， 本发明所述反射膜 16为锯齿形 （如图 2A所示） ， 当然也可以为波浪形 [17] Specifically, the reflective film 16 of the present invention has a zigzag shape (as shown in FIG. 2A), and may of course be wavy.
、 彼此正反相接的梯形结构 （如图 2B所示） 或其他非平面的凸凹结构， 且需保 证光源 15发出的光线能够覆盖扩散膜 14的每个地方， 光线经过该扩散膜 14后可 以变得柔和均匀， 然后再均匀地投射到显示屏 13上， 使显示屏 13产生出优质的 图像。 a trapezoidal structure (shown in FIG. 2B) or other non-planar convex and concave structures that are opposite to each other, and it is necessary to ensure that the light emitted by the light source 15 can cover every part of the diffusion film 14, and the light can pass through the diffusion film 14 It becomes soft and uniform, and then uniformly projected onto the display screen 13, so that the display screen 13 produces a good image.
具体地， 所述 PCB板 17及其上的电路元件 171分散设于所述反射膜 16与后盖 12 之间形成的腔体 19内 （如图 2A和图 2B所示） ， 当然， 所述 PCB板 17及其上的电 路元件 171也可以整体设于所述反射膜 16与后盖 12之间形成的腔体 19内， 均属于 本发明的保护范围。  Specifically, the PCB board 17 and the circuit component 171 thereon are dispersedly disposed in the cavity 19 formed between the reflective film 16 and the back cover 12 (as shown in FIGS. 2A and 2B ). The PCB board 17 and the circuit component 171 thereon may also be integrally disposed in the cavity 19 formed between the reflective film 16 and the back cover 12, and are all within the scope of the present invention.
优选地， 所述光源 15可以釆用 CCFL光源 （如图 2A和图 2B所示） ， 也可以釆用 LED光源 （如图 3所示） ， 均可以实现液晶显示装置的成像。  Preferably, the light source 15 can use a CCFL light source (as shown in FIGS. 2A and 2B) or an LED light source (shown in FIG. 3) to realize imaging of the liquid crystal display device.
[20] 进一步地， 所述 PCB板 17与所述后盖 12之间设有一导热绝缘片 110， 该导热绝 缘片 110可将 PCB板 17上的电子元件 171产生的热量及吋散发出去； 还可以使 PCB 板 17与后盖 12之间绝缘， 以防止 PCB板 17与外界导电而产生意外。 同吋， 由于光 源 15和扩散片 14之间有很大的空间， 热量可以以自然对流的方式传递到显示装 置外部。 当然， 所述 PCB板 17与所述后盖 12之间也可以不设导热绝缘片 110， 均 属于本发明的保护范围。 [20] Further, a heat conducting insulating sheet 110 is disposed between the PCB board 17 and the back cover 12, and the heat conducting insulating sheet 110 can dissipate heat and enthalpy generated by the electronic component 171 on the PCB board 17; The PCB board 17 and the back cover 12 can be insulated to prevent the PCB board 17 from being electrically conductive to the outside to cause an accident. At the same time, since there is a large space between the light source 15 and the diffusion sheet 14, heat can be transferred to the outside of the display device in a natural convection manner. Of course, the thermal insulating sheet 110 may not be disposed between the PCB board 17 and the back cover 12, It belongs to the scope of protection of the present invention.
[21] 另外， 所述面盖 11和后盖 12既可分别制造， 然后由螺钉装配在一起； 或者， 所 述面盖 11和后盖 12也可一体成型， 形成一个整体的壳体。 Further, the face cover 11 and the rear cover 12 may be separately manufactured and then assembled by screws; alternatively, the face cover 11 and the rear cover 12 may be integrally formed to form a unitary casing.
[22] 实施例二： [22] Example 2:
[23] 如图 4所示， 本发明实施例二提供的一种直下式超薄液晶显示装置， 包括面盖 2 1及后盖 22， 所述面盖 21和后盖 22配合形成一腔体， 所述腔体内设有显示屏 23、 扩散膜 24、 光源 25、 反射膜 26及 PCB板 27， 所述 PCB板 27上设有若干电子元件 27 1， 所述反射膜 26为平面结构， 所述光源 25设于所述反射膜 26与扩散膜 24之间形 成的腔体 28内且位于所述反射膜 26上， 所述 PCB板 27及其上的电路元件 271分散 设于所述各光源 25之间且位于所述反射膜 26上。 与现有的直下式液晶显示装置 相比， 本发明实施例二将 PCB板 27及其上的电路元件 271分散设置在反射膜 26上 且位于各光源 25之间， 构思巧妙， 显著降低了显示装置的厚度， 实现了直下式 液晶显示装置的超薄化。  As shown in FIG. 4, a direct-type ultra-thin liquid crystal display device according to a second embodiment of the present invention includes a cover 21 and a rear cover 22, and the cover 21 and the rear cover 22 cooperate to form a cavity. a display panel 23, a diffusion film 24, a light source 25, a reflective film 26, and a PCB board 27 are disposed in the cavity. The PCB board 27 is provided with a plurality of electronic components 27 1 , and the reflective film 26 is a planar structure. The light source 25 is disposed in the cavity 28 formed between the reflective film 26 and the diffusion film 24 and located on the reflective film 26, and the PCB board 27 and the circuit component 271 thereon are dispersedly disposed on the light sources. Between 25 and located on the reflective film 26. Compared with the conventional direct type liquid crystal display device, the second embodiment of the present invention disperses the PCB board 27 and the circuit component 271 thereon on the reflective film 26 and is located between the light sources 25, which is cleverly designed and significantly reduces the display. The thickness of the device realizes ultra-thinness of the direct type liquid crystal display device.
[24] 具体地， 为了提高光源 25的光线的利用率， 所述 PCB板 27上的电路元件 271上 涂有光反射材料， 光源 25的光线照射到电路元件 271上， 电路元件 271可以将光 线反射到扩散膜 24上， 显著提高了光源 25的光线的利用率。  [24] Specifically, in order to improve the utilization of light of the light source 25, the circuit component 271 on the PCB board 27 is coated with a light reflecting material, and the light of the light source 25 is irradiated onto the circuit component 271, and the circuit component 271 can reflect the light to On the diffusion film 24, the utilization of the light of the light source 25 is remarkably improved.
[25] 进一步地， 所述 PCB板 27与所述后盖 22之间设有导热绝缘片 29， 该导热绝缘片 29可将 PCB板 27上的电子元件 271产生的热量及吋散发出去； 还可以使 PCB板 27 与反射膜 26之间绝缘， 以防止 PCB板 27与外界导电而产生意外。 同吋， 由于光源 25和扩散片 24之间有很大的空间， 热量可以以自然对流的方式传递到显示装置 外部。 当然， 所述 PCB板 27与所述反射膜 26之间也可以不设导热绝缘片 29， 均属 于本发明的保护范围。  [25] Further, a heat conducting insulating sheet 29 is disposed between the PCB board 27 and the back cover 22, and the heat conducting insulating sheet 29 can dissipate heat and enthalpy generated by the electronic component 271 on the PCB board 27; The PCB board 27 and the reflective film 26 can be insulated to prevent the PCB board 27 from being electrically conductive to the outside to cause an accident. At the same time, since there is a large space between the light source 25 and the diffusion sheet 24, heat can be transferred to the outside of the display device in a natural convection manner. Of course, the thermal insulation insulating sheet 29 may not be disposed between the PCB board 27 and the reflective film 26, and is within the protection scope of the present invention.
同样， 所述光源 25也可以釆用 CCFL光源 （如图 4所示） 或 LED光源 （图中未示 出） ， 均可以实现液晶显示装置的成像。  Similarly, the light source 25 can also use a CCFL light source (as shown in FIG. 4) or an LED light source (not shown) to realize imaging of the liquid crystal display device.
[27] 另外， 所述面盖 21和后盖 22既可分别制造， 然后由螺钉装配在一起； 或者， 所 述面盖 21和后盖 22也可一体成型， 形成一个整体的壳体。  Further, the face cover 21 and the back cover 22 may be separately manufactured and then assembled by screws; alternatively, the face cover 21 and the back cover 22 may be integrally formed to form a unitary casing.
[28] 以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发明的 精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保 护范围之内。 The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the present invention. Invention insurance Within the scope of protection.

Claims

权利要求书 Claim
一种直下式超薄液晶显示装置， 包括面盖及后盖， 所述面盖和后 盖配合形成一腔体， 所述腔体内设有显示屏、 扩散膜、 光源、 反 射膜及 PCB板， 所述 PCB板上设有若干电子元件， 其特征在于： 所 述 PCB板及其上的电路元件设于所述各光源之间。 A direct type ultra-thin liquid crystal display device comprises a cover and a back cover, wherein the cover and the back cover cooperate to form a cavity, wherein the cavity is provided with a display screen, a diffusion film, a light source, a reflective film and a PCB board, The PCB board is provided with a plurality of electronic components, wherein: the PCB board and circuit components thereon are disposed between the light sources.
如权利要求 1所述的直下式超薄液晶显示装置， 其特征在于： 所述 反射膜为非平面的凸凹结构， 所述光源设于所述反射膜与扩散膜 之间形成的腔体内，且位于所述反射膜的凹陷处， 所述 PCB板及其 上的电路元件设于所述反射膜与后盖之间形成的腔体内并固设于 所述后盖上。 The direct-type ultra-thin liquid crystal display device according to claim 1, wherein: the reflective film is a non-planar convex-concave structure, and the light source is disposed in a cavity formed between the reflective film and the diffusion film, and Located in the recess of the reflective film, the PCB board and the circuit component thereon are disposed in a cavity formed between the reflective film and the back cover and are fixed on the back cover.
如权利要求 2所述的直下式超薄液晶显示装置， 其特征在于： 所述 反射膜为锯齿形、 波浪形或彼此正反相接的梯形结构。 The direct type ultra-thin liquid crystal display device according to claim 2, wherein the reflective film has a zigzag shape, a wave shape, or a trapezoidal structure which is connected in reverse phase to each other.
如权利要求 3所述的直下式超薄液晶显示装置， 其特征在于： 所述 PCB板及其上的电路元件分散设于所述反射膜与后盖之间形成的 腔体内， 或者所述 PCB板及其上的电路元件整体设于所述反射膜 与后盖之间形成的腔体内。 The direct type ultra-thin liquid crystal display device according to claim 3, wherein: the PCB board and circuit elements thereon are dispersedly disposed in a cavity formed between the reflective film and the back cover, or the PCB The board and the circuit components thereon are integrally disposed in a cavity formed between the reflective film and the back cover.
如权利要求 4所述的直下式超薄液晶显示装置， 其特征在于： 所述 PCB板与所述后盖之间设有导热绝缘片。 The direct type ultra-thin liquid crystal display device according to claim 4, wherein a heat conductive insulating sheet is disposed between the PCB board and the back cover.
如权利要求 1所述的直下式超薄液晶显示装置， 其特征在于： 所述 反射膜为平面结构， 所述光源设于所述反射膜与扩散膜之间形成 的腔体内且位于所述反射膜上， 所述 PCB板及其上的电路元件分 散设于所述各光源之间且位于所述反射膜上。 The direct type ultra-thin liquid crystal display device according to claim 1, wherein: the reflective film has a planar structure, and the light source is disposed in a cavity formed between the reflective film and the diffusion film and is located in the reflection On the film, the PCB board and the circuit components thereon are dispersedly disposed between the light sources and located on the reflective film.
如权利要求 6所述的直下式超薄液晶显示装置， 其特征在于： 所述 PCB板上的电路元件上涂有光反射材料。 The direct type ultrathin liquid crystal display device according to claim 6, wherein the circuit component on the PCB is coated with a light reflecting material.
如权利要求 7所述的直下式超薄液晶显示装置， 其特征在于： 所述 PCB板与所述后盖之间设有导热绝缘片。 The direct type ultra-thin liquid crystal display device according to claim 7, wherein a heat conductive insulating sheet is disposed between the PCB board and the back cover.
如权利要求 1所述的直下式超薄液晶显示装置， 其特征在于： 所述 光源为 CCFL光源或 LED光源。 [Claim 10] 权利要求 1所述的直下式超薄液晶显示装置， 其特征在于： 所述面 盖和后盖分别制造或者一体成型。 The direct type ultra-thin liquid crystal display device according to claim 1, wherein the light source is a CCFL light source or an LED light source. [Claim 10] The direct type ultra-thin liquid crystal display device according to claim 1, wherein the face cover and the back cover are separately manufactured or integrally formed.
PCT/CN2009/076162 2009-09-30 2009-12-29 Direct-type ultra-thin liquid crystal display device WO2011038562A1 (en)

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