WO2019210683A1 - 电磁膜固定结构、直下式背光显示模组及显示器 - Google Patents

电磁膜固定结构、直下式背光显示模组及显示器 Download PDF

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Publication number
WO2019210683A1
WO2019210683A1 PCT/CN2018/118464 CN2018118464W WO2019210683A1 WO 2019210683 A1 WO2019210683 A1 WO 2019210683A1 CN 2018118464 W CN2018118464 W CN 2018118464W WO 2019210683 A1 WO2019210683 A1 WO 2019210683A1
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Prior art keywords
diffusion
film
electromagnetic
plate
fixing structure
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English (en)
French (fr)
Inventor
郑少洪
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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    • 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Definitions

  • the invention relates to the technical field of LED display devices, in particular to an electromagnetic film fixing structure, a direct type backlight display module and a display.
  • the direct type backlit display can only be used as a display and has a single function.
  • the combination of commonly used liquid crystal displays and touch devices is a market development trend.
  • the market demand for touch input is also getting higher and higher.
  • the electromagnetic touch screen technology has been widely used, and the electromagnetic touch screen technology has also begun to be applied to the direct type backlight.
  • the electromagnetic film is generally fixed by hanging on the mounting ear of the backing plate, and there is a certain relative displacement amount, and when the device is properly positioned by the electromagnetic touch, the electromagnetic film is easily changed by the environment. Touch the point offset to affect the touch experience.
  • the present invention provides an electromagnetic film fixing structure, a direct type backlight display module and a display, which reduces touch point offset and improves the touch use experience.
  • An electromagnetic film fixing structure comprising a back plate structure, an electromagnetic touch structure fixed on the back plate structure;
  • the backboard structure includes a backboard body and a fixing structure protrudingly disposed on a circumferential side of the backboard body;
  • the electromagnetic touch structure includes a diffusion plate fixed on the fixed structure, and an electromagnetic film attached to the diffusion plate.
  • the electromagnetic film is fixed to the diffusion plate by a full fit
  • the electromagnetic film is fixed to the diffusion plate by means of a frame.
  • the electromagnetic film is disposed on a top of the diffusion plate
  • the electromagnetic film is provided at the bottom of the diffusion plate.
  • the fixing structure includes a flange plate extending outward along a peripheral side edge of the back plate main body, and a connecting member for fixing the electromagnetic touch structure on the flange plate.
  • the diffusion plate includes a diffusion main plate that is bonded to the electromagnetic film, a diffusion connection plate disposed on a peripheral side of the diffusion main plate, and a diffusion positioning hole or a diffusion positioning groove formed on the diffusion connection plate. And the connecting member passes through the diffusion positioning hole or the diffusion positioning groove.
  • the electromagnetic film includes a film body that is bonded to the diffusion main plate, a connecting film disposed on a peripheral side of the film body, and a film positioning hole or a film diffusion groove formed on the connecting film.
  • the film positioning hole or the film diffusion hole corresponds to the diffusion positioning hole or the diffusion positioning groove, and the connecting member passes through the film positioning hole or the film diffusion groove.
  • the diffusion plate includes a plurality of the diffusion connecting plates disposed on the circumferential side of the diffusion main plate, and each of the diffusion connecting plates is provided with at least one of the diffusion positioning holes or the diffusion positioning grooves.
  • the diffusion positioning hole or the diffusion positioning groove is located at a center line of the diffusion main board.
  • the present invention also provides a direct type backlight display module comprising the electromagnetic film fixing structure as described above.
  • the present invention also provides a display comprising the direct type backlight display module as described above.
  • the invention has the following beneficial effects: by attaching the electromagnetic film to the diffusion plate and positioning and fixing the two on the back plate structure by using the positioning hole groove, the fixing problem of the electromagnetic film and the diffusion plate can be solved, and only the positioning hole is needed.
  • the size of the groove is matched with the fixed structure on the back plate structure, that is, the electromagnetic film can be fixed without relative displacement; at the same time, the change of the ambient temperature and humidity still affects the electromagnetic film, but the positioning hole groove is Positioning near the center of the electromagnetic film and the diffusion plate, the expansion and contraction will be on both sides, and the actual shrinkage distance can be reduced to half, which improves the touch deviation due to environmental changes.
  • FIG. 1 is a schematic block diagram showing the structure of an electromagnetic film fixing structure according to the present invention.
  • FIG. 2 is a schematic block diagram showing a schematic structure of an electromagnetic touch structure of an electromagnetic film fixing structure according to the present invention.
  • an embodiment of the present invention provides an electromagnetic film fixing structure, including a back plate structure 100 , and an electromagnetic touch structure 200 fixed on the back plate structure 100 .
  • the backplane structure 100 can provide support for the electromagnetic touch structure 200, and electromagnetic touch sensing can be performed by the electromagnetic touch structure 200.
  • the above-mentioned electromagnetic film fixing structure may further include an optical film 300 provided on the electromagnetic touch structure 200 to achieve a desired optical effect.
  • the back plate structure 100 includes a back plate body 110 and a fixing structure 120 protrudingly disposed on a circumferential side of the back plate body 110.
  • the electromagnetic touch structure 200 includes a diffusion plate 210 fixed on the fixed structure 120 and an electromagnetic film 220 attached to the diffusion plate 210. By attaching the electromagnetic film 220 to the diffusion plate 210, an electromagnetic touch structure 200 having a monolithic structure can be formed. Compared with the conventional technology, the electromagnetic film 220 is mounted on the back plate structure 100, and the relative displacement of the electromagnetic film 220 can be avoided. Therefore, it is possible to avoid a touch point shift when the electromagnetic film 220 is mounted and fixed.
  • the back plate body 110 can be disposed in a groove shape, and the circumferential side of the electromagnetic touch structure 200 can be fixed on the fixing structure 120 of the back plate structure 100, so that the central portion of the electromagnetic touch structure 200 can be suspended.
  • the electromagnetic film 220 can be attached to the diffusion plate 210 and fixing the diffusion plate 210 to the back plate structure 100, not only the relative displacement amount of the electromagnetic film 220 is avoided, but also the electromagnetic film 220 can be reduced when the temperature and humidity are changed. The shrinkage is generated, thereby reducing or avoiding the touch point offset and improving the user's touch effect.
  • the electromagnetic film 220 can be adhered and fixed to the diffusion plate 210 by means of a full-fit manner, that is, the diffusion plate 210 and the electromagnetic film 220 are seamlessly formed by water glue or optical glue. The way is completely glued together.
  • the full fit technique eliminates air between the electromagnetic touch structures 200, which helps to reduce reflection between the diffuser plate 210 and the electromagnetic film 220, allowing the electromagnetic touch structure 200 to appear more transparent, enhancing the display of the electromagnetic touch structure 200. effect.
  • the electromagnetic film 220 may be attached to the top of the diffusion plate 210 (ie, the side of the diffusion plate 210 facing away from the back plate structure), or the electromagnetic film 220 may be attached to the bottom of the diffusion plate 210 (ie, diffusion). The plate 210 faces one side of the backing plate structure).
  • the electromagnetic film 220 can be fixedly attached to the diffusion plate 210 by means of a frame, that is, the diffusion plate 210 and the four sides of the electromagnetic film 220 are simply fixed by double-sided tape. The process is simple and inexpensive, but there is an air layer between the diffuser plate 210 and the electromagnetic film 220.
  • the electromagnetic film 220 may be attached to the top of the diffusion plate 210 (ie, the side of the diffusion plate 210 facing away from the back plate structure), or the electromagnetic film 220 may be attached to the bottom of the diffusion plate 210. (ie, the side of the diffuser plate 210 facing the backing plate structure).
  • the above-described fixing structure 120 includes a flange plate extending outward along a peripheral side edge of the back plate main body 110, and a connecting member 122 for fixing the electromagnetic touch structure 200 to the flange plate.
  • a connecting member 122 for fixing the electromagnetic touch structure 200 to the flange plate.
  • the connecting member 122 can be provided as a screw, a bolt, a stud, or a structure such as a rivet or a stud, so as to facilitate the fixing of the electromagnetic touch structure 200 described above on the flange plate.
  • the connecting member 122 can be fixed to the flange plate in advance, and the electromagnetic touch structure 200 can be connected and fixed by the other end.
  • the diffusion plate 210 includes a diffusion main plate 212 that is bonded to the electromagnetic film 220, a diffusion connection plate 214 disposed on the circumferential side of the diffusion main plate 212, and diffusion spread on the diffusion connection plate 214.
  • the positioning hole 216 or the diffusion positioning groove is passed through, and the connecting member 122 passes through the diffusion positioning hole 216 or the diffusion positioning groove.
  • the electromagnetic film 220 includes a film main body that is bonded to the diffusion main plate 212, a connecting film disposed on a peripheral side of the film main body, and a film positioning hole or a film diffusion groove formed on the connecting film, and
  • the film positioning hole or the film diffusion hole corresponds to the diffusion positioning hole 216 or the diffusion positioning groove, and the connecting member 122 passes through the film positioning hole or the film diffusion groove.
  • the diffusion plate 210 may further include a plurality of diffusion connecting plates 214 disposed on the circumferential side of the diffusion main plate 212, and each of the diffusion connecting plates 214 is provided with at least one of the diffusion positioning holes 216 or the diffusion positioning grooves.
  • the diffusion positioning hole 216 or the diffusion positioning groove can be disposed in a plurality of directions of the diffusion plate 210, so that the diffusion plate 210 and the electromagnetic film 220 can be positioned and fixed from a plurality of directions of the diffusion plate 210, thereby enabling The change in the expansion and contraction of the electromagnetic film 220 when the ambient temperature and humidity change is reduced in a plurality of directions, that is, the touch point offset can be reduced from a plurality of directions of the electromagnetic film.
  • the diffusion positioning hole 216 or the diffusion positioning groove may be disposed at a center line of the diffusion main plate 212 (refer to a lateral center line or/and a longitudinal center line of the diffusion main plate 212 or the diffusion plate 210), and the center line may be It means located directly above the centerline, or it can be located off the centerline, near the centerline.
  • the diffusion positioning hole 216 or the diffusion positioning groove is disposed directly on the center line of the diffusion main plate 212, it can be positioned and fixed from the center position of the diffusion plate 210 to reduce the touch point deviation of the electromagnetic film 220. better result.
  • each of the diffusion positioning holes 216 or the diffusion positioning grooves is also located on the center line of the corresponding orientation of the diffusion plate 210.
  • the diffusion positioning hole 216 or the diffusion positioning groove may also be offset from the center line of the diffusion main plate, located near the center line of the diffusion main plate (refer to the lateral center line or/and the longitudinal center line of the diffusion main plate 212 or the diffusion plate 210, that is, close to Dividing the lateral center line of the main plate 212 or the diffusion plate 210 or/and one side of the longitudinal center line), that is, the diffusion positioning hole 216 or the diffusion positioning groove is close to the center line of the diffusion plate 210, and the electromagnetic film 220 can also be significantly reduced. Touch point offset phenomenon.
  • the electromagnetic film 220 may further include a plurality of connecting films disposed on the circumferential side of the film body, and each of the connecting films is also provided with at least one of the above-mentioned film positioning holes or film diffusion holes, and each connecting film
  • Each of the sheets corresponds to a diffusion connecting plate 214, and each of the film positioning holes (or the film diffusion holes) also uniformly corresponds to one diffusion positioning hole 216 (or a diffusion positioning groove).
  • the above-mentioned film positioning hole or film diffusion hole may be provided on the center line of the electromagnetic film 220 (refer to the lateral center line or/and the longitudinal center line of the electromagnetic film 220) so as to be directly from the center position of the electromagnetic film 220. Position and fix it.
  • a film positioning hole or a film diffusion hole may also be provided near the center line of the electromagnetic film 220 (refer to a lateral center line or/and a longitudinal center line adjacent to the electromagnetic film 220, that is, close to the lateral center line of the electromagnetic film 220 or / And one side of the longitudinal center line), that is, disposed near the center line of the electromagnetic film 220.
  • the present invention also provides a direct type backlight display module comprising the electromagnetic film fixing structure as described above.
  • the present invention also provides a display comprising the direct type backlight display module as described above.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本发明公开一种电磁膜固定结构、直下式背光显示模组及显示器。该电磁膜固定结构，包括背板结构，固设于所述背板结构上的电磁触摸结构；所述背板结构包括背板主体，以及突出设置于所述背板主体周侧的固定结构；所述电磁触摸结构包括固设于所述固定结构上的扩散板，以及贴设于所述扩散板上的电磁膜。本发明提供的技术方案，可减少触摸点位偏移，改善触摸使用体验。

Description

电磁膜固定结构、直下式背光显示模组及显示器 技术领域
本发明涉及LED显示设备技术领域，特别是涉及一种电磁膜固定结构、直下式背光显示模组及显示器。
背景技术
在传统技术中，直下式背光显示器仅仅只能用作显示器，功能单一。而随着输入技术和显示技术的发展，将常用的液晶显示器和触控装置相结合是市场的发展趋势。而且，市场对触控输入的体验要求也越来越高，如越来越追求原笔迹手写输入效果，因此电磁触控屏技术得到了广泛应用，电磁触控屏技术也开始应用于直下式背光显示器上。但是，在背光显示模组中，电磁膜一般通过悬挂在背板的挂耳上进行固定，存在一定的相对位移量，而且当设备做好电磁触摸定位后，极易由环境变化造成电磁膜的触摸点位偏移，影响触摸的体验。
发明内容
基于此，针对上述问题，本发明提供一种电磁膜固定结构、直下式背光显示模组及显示器，减少触摸点位偏移，改善触摸使用体验。
其技术方案如下：
一种电磁膜固定结构，包括背板结构，固设于所述背板结构上的电磁触摸结构；
所述背板结构包括背板主体，以及突出设置于所述背板主体周侧的固定结构；
所述电磁触摸结构包括固设于所述固定结构上的扩散板，以及贴设于所述扩散板上的电磁膜。
通过将电磁膜贴合固定在扩散板上，并将扩散板固定在背板结构上，不仅避免电磁膜产生相对位移量，还可以减少环境温湿度变化时电磁膜产生缩涨， 从而能够减轻或者避免触摸点位偏移，改善用户的触摸使用效果。
下面对其进一步技术方案进行说明：
进一步地，所述电磁膜通过全贴合的方式与所述扩散板固定；
或者，所述电磁膜通过框贴的方式与所述扩散板固定。
进一步地，所述电磁膜设于所述扩散板顶部；
或者，所述电磁膜设于所述扩散板底部。
进一步地，所述固定结构包括沿着所述背板主体周侧边缘向外延伸的凸缘板，以及用于固定所述电磁触摸结构于所述凸缘板上的连接件。
进一步地，所述扩散板包括与所述电磁膜贴合的扩散主板，设于所述扩散主板周侧的扩散连接板，以及开设于所述扩散连接板上的扩散定位孔或扩散定位槽，且所述连接件穿过所述扩散定位孔或扩散定位槽。
进一步地，所述电磁膜包括与所述扩散主板对应贴合的膜主体，设于所述膜主体周侧的连接膜片，以及开设于所述连接膜片上的膜定位孔或膜扩散槽，且所述膜定位孔或膜扩散孔与所述扩散定位孔或扩散定位槽对应，所述连接件穿过所述膜定位孔或膜扩散槽。
进一步地，所述扩散板包括多个环设于所述扩散主板周侧的所述扩散连接板，每个扩散连接板上开设有至少一个所述扩散定位孔或扩散定位槽。
进一步地，所述扩散定位孔或扩散定位槽位于所述扩散主板的中心线处。
此外，本发明还提出一种直下式背光显示模组，包括如上所述的电磁膜固定结构。
此外，本发明还提出一种显示器，包括如上所述的直下式背光显示模组。
本发明具有如下有益效果：通过将电磁膜与扩散板贴合，并采用定位孔槽对二者定位固定于背板结构上，就可以解决电磁膜以及扩散板的固定问题，仅需要将定位孔槽的尺寸与背板结构上的固定结构做好配合，即可以将电磁膜固定好，不会发生相对位移；同时，环境温湿度的变化，对电磁膜仍起影响，但是定位孔槽由于是靠近电磁膜与扩散板的中心附近进行定位，膨胀收缩会往两侧，实际收缩距离可减少为原来的一半，改善了由于环境变化带来的触摸偏差。
附图说明
图1为本发明所述电磁膜固定结构的结构示意框图；
图2为本发明所述电磁膜固定结构的电磁触摸结构的俯视结构示意框图。
附图标记说明：
100-背板结构，110-背板主体，120-固定结构，122-连接件，200-电磁触摸结构，210-扩散板，212-扩散主板，214-扩散连接板，216-扩散定位孔(或扩散定位槽)，220-电磁膜，300-光学膜片。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中各图中相同的标号表示相同的部分。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不理解为对本发明的限制。
如图1所示，本发明实施例提出一种电磁膜固定结构，包括背板结构100，固设于该背板结构100上的电磁触摸结构200。利用该背板结构100可为电磁触摸结构200提供支撑，而利用该电磁触摸结构200可以进行电磁触摸感应。此外，上述电磁膜固定结构还可以包括设于电磁触摸结构200上的光学膜片300，以实现需求的光学效果。
具体地，上述背板结构100包括背板主体110，以及突出设置于该背板主体110周侧的固定结构120。而上述电磁触摸结构200包括固设于该固定结构120上的扩散板210，以及贴设于该扩散板210上的电磁膜220。通过将电磁膜220贴合到扩散板210上可形成一个整体结构的电磁触摸结构200，相对于传统技术中将电磁膜220挂装在背板结构100上，可以避免电磁膜220产生相对位移量，从而可以避免在对电磁膜220进行安装固定时产生触摸点位偏移。在本实施例中，该背板主体110可设置为凹槽状，而该电磁触摸结构200的周侧可固定在背板结构100的固定结构120上，可使得电磁触摸结构200中部悬空。这样，通过将电磁膜220贴合固定在扩散板210上，并将扩散板210固定在背板结构100上，不仅避免电磁膜220产生相对位移量，还可以减少环境温湿度变化时电磁膜220产生缩涨，从而能够减轻或者避免触摸点位偏移，改善用户的触摸使 用效果。
进一步地，在一些实施例中，上述电磁膜220可通过全贴合的方式与上述扩散板210进行贴合固定，即是以水胶或光学胶将扩散板210与电磁膜220以无缝隙的方式完全黏贴在一起。全贴合技术消除了电磁触摸结构200间的空气，这有助于减少扩散板210与电磁膜220之间的反光，可以让电磁触摸结构200看起来更加通透，增强电磁触摸结构200的显示效果。而且，还可将该电磁膜220贴设于该扩散板210的顶部(即扩散板210背对背板结构的一侧)，也可将该电磁膜220贴设于该扩散板210的底部(即扩散板210面对背板结构的一侧)。
此外，在另一些实施例中，该电磁膜220可通过框贴的方式与扩散板210进行贴合固定，即简单的以双面胶将扩散板210与电磁膜220的四边固定，其优点在于工艺简单且成本低廉，但是在扩散板210与电磁膜220间会存在空气层。此外，同理，也可将该电磁膜220贴设于该扩散板210的顶部(即扩散板210背对背板结构的一侧)，也可将该电磁膜220贴设于该扩散板210的底部(即扩散板210面对背板结构的一侧)。
此外，上述固定结构120包括沿着该背板主体110周侧边缘向外延伸的凸缘板，以及用于固定该电磁触摸结构200于该凸缘板上的连接件122。通过在背板主体周侧设置凸缘板，更方便从四周对上述的电磁触摸结构200进行固定。而且，该连接件122可以设置为螺钉、螺栓、螺柱，或者设置为铆钉、铆柱等结构，便于将上述的电磁触摸结构200固定在凸缘板上。此外，该连接件122可以预先将一端固定在凸缘板上，再用另一端对该电磁触摸结构200进行连接固定。
而且，如图2所示，上述的扩散板210包括与电磁膜220贴合的扩散主板212，设于该扩散主板212周侧的扩散连接板214，以及开设于该扩散连接板214上的扩散定位孔216或扩散定位槽，且上述连接件122穿过该扩散定位孔216或扩散定位槽。通过在扩散板210上设置具有扩散定位孔216或扩散定位槽的扩散连接板214，方便利用连接固定于背板结构100上的连接件122对扩散板210及电磁膜220进行定位和固定。这样，可以在一定程度上减少扩散板210及电磁膜220在环境温湿度变化时产生的涨缩变化，即可以减少电磁膜220的触 摸点位偏移。
进一步地，上述电磁膜220包括与上述扩散主板212对应贴合的膜主体，设于该膜主体周侧的连接膜片，以及开设于该连接膜片上的膜定位孔或膜扩散槽，且该膜定位孔或膜扩散孔与上述的扩散定位孔216或扩散定位槽对应，上述连接件122穿过该膜定位孔或膜扩散槽。这样，通过在电磁膜220上设置与扩散定位孔216(或扩散定位槽)对应的膜定位孔(或膜扩散槽)，可以同时对扩散板210及电磁膜220进行定位和固定。这样，可以进一步地减少电磁膜220在环境温湿度变化时产生的涨缩变化，即可以进一步减少电磁膜220的触摸点位偏移。
而且，上述扩散板210还可以包括多个环设于上述扩散主板212周侧的扩散连接板214，每个扩散连接板214上开设有至少一个上述扩散定位孔216或扩散定位槽。这样，可以在该扩散板210的多个方向设置扩散定位孔216或扩散定位槽，便于从该扩散板210的多个方向上对该扩散板210及电磁膜220进行定位和固定，从而能够从多个方向上减少电磁膜220在环境温湿度变化时产生的涨缩变化，即可以从该电磁膜的多个方向上减少触摸点位偏移。进一步地，上述的扩散定位孔216或扩散定位槽可设于上述扩散主板212的中心线处(指扩散主板212或扩散板210的横向中心线或/和纵向中心线)，而中心线处可以是指位于中心线正上，也可以指偏离中心线位置，位于中心线附近。当扩散定位孔216或扩散定位槽设于扩散主板212的中心线正上时，这样就可以从扩散板210的中心位置上对其进行定位和固定，减少电磁膜220的触摸点位偏移的效果更好。而且，当在扩散板210的多个方位上均设置有扩散定位孔216或扩散定位槽时，每个扩散定位孔216或扩散定位槽也位于该扩散板210的对应方位的中心线上。此外，扩散定位孔216或扩散定位槽也可偏离扩散主板的中心线，位于扩散主板的中心线附近(指邻近扩散主板212或扩散板210的横向中心线或/和纵向中心线，即靠近于扩散主板212或扩散板210的横向中心线或/和纵向中心线的一侧)，即可以使得扩散定位孔216或扩散定位槽靠近扩散板210的中心线，也能显著地减少电磁膜220的触摸点位偏移现象。
对应地，上述电磁膜220也可以包括多个环设于膜主体周侧的连接膜片， 每个连接膜片上也开设有至少一个上述的膜定位孔或膜扩散孔，并且每个连接膜片均与一个扩散连接板214对应，每个膜定位孔(或膜扩散孔)也均匀一个扩散定位孔216(或扩散定位槽)对应。此外，上述的膜定位孔或膜扩散孔也可设于上述电磁膜220的中心线(指电磁膜220的横向中心线或/和纵向中心线)上，这样可以直接从电磁膜220的中心位置对其进行定位和固定。这样，可以更好地从各个方向对电磁膜220进行定位和固定，可以更进一步地减少电磁膜220的触摸点位偏移。此外，膜定位孔或膜扩散孔也可设于上述电磁膜220的中心线附近(指邻近电磁膜220的横向中心线或/和纵向中心线，即靠近于电磁膜220的横向中心线或/和纵向中心线的一侧)，即靠近电磁膜220的中心线设置。
此外，本发明还提出一种直下式背光显示模组，包括如上所述的电磁膜固定结构。而且，本发明还提出一种显示器，包括如上所述的直下式背光显示模组。通过将电磁膜与扩散板贴合，并采用定位孔槽(即扩散定位孔216(或扩散定位槽)、膜定位孔(或膜扩散孔))对二者定位固定于背板结构上，就可以解决电磁膜以及扩散板的固定问题，仅需要将定位孔槽的尺寸与背板结构上的固定结构做好配合，即可以将电磁膜固定好，不会发生相对位移；同时，环境温湿度的变化，对电磁膜仍起影响，但是定位孔槽由于是靠近电磁膜与扩散板的中心附近进行定位，膨胀收缩会往两侧，实际收缩距离可减少为原来的一半，改善了由于环境变化带来的触摸偏差。
此外，还需要理解的是，在本实施例中，术语“下”、“上”、“前”、“后”、“左”、“右”、“内”、“外”、“顶”、“底”、“一侧”、“另一侧”、“一端”、“另一端”、等所指示的位置关系为基于附图所示的位置关系；“第一”、“第二”等术语，是为了区分不同的结构部件。这些术语仅为了便于描述本发明和简化描述，不能理解为对本发明的限制。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对所述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的 普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种电磁膜固定结构，其特征在于，包括背板结构，固设于所述背板结构上的电磁触摸结构；
    所述背板结构包括背板主体，以及突出设置于所述背板主体周侧的固定结构；
    所述电磁触摸结构包括固设于所述固定结构上的扩散板，以及贴设于所述扩散板上的电磁膜。
  2. 根据权利要求1所述的电磁膜固定结构，其特征在于，所述电磁膜通过全贴合的方式与所述扩散板固定；
    或者，所述电磁膜通过框贴的方式与所述扩散板固定。
  3. 根据权利要求1所述的电磁膜固定结构，其特征在于，所述电磁膜设于所述扩散板顶部；
    或者，所述电磁膜设于所述扩散板底部。
  4. 根据权利要求1-3任意一项所述的电磁膜固定结构，其特征在于，所述固定结构包括沿着所述背板主体周侧边缘向外延伸的凸缘板，以及用于固定所述电磁触摸结构于所述凸缘板上的连接件。
  5. 根据权利要求4所述的电磁膜固定结构，其特征在于，所述扩散板包括与所述电磁膜贴合的扩散主板，设于所述扩散主板周侧的扩散连接板，以及开设于所述扩散连接板上的扩散定位孔或扩散定位槽，且所述连接件穿过所述扩散定位孔或扩散定位槽。
  6. 根据权利要求5所述的电磁膜固定结构，其特征在于，所述电磁膜包括与所述扩散主板对应贴合的膜主体，设于所述膜主体周侧的连接膜片，以及开设于所述连接膜片上的膜定位孔或膜扩散槽，且所述膜定位孔或膜扩散孔与所述扩散定位孔或扩散定位槽对应，所述连接件穿过所述膜定位孔或膜扩散槽。
  7. 根据权利要求5所述的电磁膜固定结构，其特征在于，所述扩散板包括多个环设于所述扩散主板周侧的所述扩散连接板，每个扩散连接板上开设有至少一个所述扩散定位孔或扩散定位槽。
  8. 根据权利要求7所述的电磁膜固定结构，其特征在于，所述扩散定位孔或扩散定位槽位于所述扩散主板的中心线处。
  9. 一种直下式背光显示模组，其特征在于，包括如权利要求1-8任意一项所述的电磁膜固定结构。
  10. 一种显示器，其特征在于，包括如权利要求9所述的直下式背光显示模组。
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