CN103278965A - Electromagnetic type touch control backlight unit and liquid crystal display device - Google Patents

Electromagnetic type touch control backlight unit and liquid crystal display device Download PDF

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Publication number
CN103278965A
CN103278965A CN2012105769478A CN201210576947A CN103278965A CN 103278965 A CN103278965 A CN 103278965A CN 2012105769478 A CN2012105769478 A CN 2012105769478A CN 201210576947 A CN201210576947 A CN 201210576947A CN 103278965 A CN103278965 A CN 103278965A
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China
Prior art keywords
electromagnetism
glue frame
control module
electromagnetic touch
trackpad
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Application number
CN2012105769478A
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Chinese (zh)
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CN103278965B (en
Inventor
吴超
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Shanghai AVIC Optoelectronics Co Ltd
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Shanghai AVIC Optoelectronics Co Ltd
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Priority to CN201210576947.8A priority Critical patent/CN103278965B/en
Publication of CN103278965A publication Critical patent/CN103278965A/en
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Publication of CN103278965B publication Critical patent/CN103278965B/en
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Abstract

The invention discloses an electromagnetic type touch control backlight unit and a liquid crystal display device. The electromagnetic type touch control backlight unit comprises a plastic frame and an electromagnetic touch control board which is embedded into the plastic frame, and yield strength of material of the plastic frame is greater than or equal to 90 MPa. According to the electromagnetic type touch control backlight unit, as the plastic frame can also achieve the mechanical supporting function of an original back board, the back board can be omitted. The electromagnetic type touch control backlight unit without the back board eliminates interference, to electromagnetic touch control, of the back board fundamentally, design difficulty caused by the back board is avoided, and meanwhile cost of the material is also lowered.

Description

A kind of electromagnetic touch-control module backlight and liquid crystal indicator
Technical field
The present invention relates to flat panel display, particularly a kind of electromagnetic touch-control module backlight and liquid crystal indicator.
Background technology
The electromagnetic touch-control input media is imported by handwriting input realization information by electromagnetism Trackpad and special electromagnetic pointer as a kind of input equipment.When the electromagnetism pointer is write in the effective coverage of electromagnetism Trackpad, information such as the trace information that electromagnetism Trackpad acquisition electromagnetism pointer is write and pressure size, and send messaging device to.The electromagnetic touch-control input technology has advantages such as precision height, accurate positioning, is widely used on the mobile electronic products such as e-book, Hand Personal Computer.
Usually, the electromagnetic touch-control liquid crystal indicator comprises a LCDs and electromagnetic touch-control module backlight.As shown in Figure 1, electromagnetic touch-control module 100 backlight comprises a backboard 101, a glue frame 102 and an electromagnetism Trackpad 103.
As shown in Figure 2, in the module 100 backlight of the electromagnetic touch-control after assembling, described glue frame 102 is positioned at a side of described backboard 101, and described electromagnetism Trackpad 103 is fixed in the opposite side of described backboard 101.In electromagnetism touch touch-control module backlight, described electromagnetism Trackpad 103 is to realize touch-control with the electromagnetic induction of the time writer that is positioned at described backboard 101 1 sides, therefore must any various factors that may disturb or weaken the electromagnetic induction between electromagnetism Trackpad 103 and the time writer of strict control.
Usually, backboard all is made up of the ferromagnetic material with magnetic, when electromagnetism Trackpad and the electromagnetism pointer that is positioned at its opposite are carried out touch-control work, electromagnetic force between electromagnetism Trackpad and the electromagnetism pointer need be passed backboard, and therefore the backboard between electromagnetism Trackpad and electromagnetism pointer just becomes a key factor disturbing and influence the electromagnetism touch-control.
For this reason, attenuate backboard and in the technology of backboard upper shed has appearred.Though these technology have reduced the interference of backboard to the electromagnetism touch-control, for the design of backboard brings very big limitation.For this reason, be necessary to develop a kind of new electromagnetic touch-control module backlight to reduce the interference to the electromagnetism touch-control, improve the flexible design degree of electromagnetism touch-control module backlight simultaneously.
Summary of the invention
The invention provides a kind of electromagnetic touch-control module backlight and liquid crystal indicator, to solve backboard to the problem that the electromagnetism touch-control disturbs, reduce the design difficulty of electromagnetic touch-control module backlight simultaneously.
Be topic for solving above-mentioned technology, the invention provides a kind of electromagnetic touch-control module backlight and comprise:
One glue frame, the YIELD STRENGTH of described glue frame is more than or equal to 90MPa; And
Be embedded in the electromagnetism Trackpad on the described glue frame.
Optionally, the YIELD STRENGTH of described glue frame is greater than 260MPa.
Optionally, the material of described glue frame is nonmagnetic substance.
Optionally, the material of described glue frame is aluminium alloy or magnesium alloy.
Optionally, the proportion of the material of described glue frame is less than or equal to 7.82g/cm 3
Optionally, described glue frame material is a kind of of carbon fibre, melamine, acrylic or PVC.
Optionally, also comprise the reflector plate that is installed on the described electromagnetism Trackpad.
Optionally, also comprise the reflection horizon that is coated on the described electromagnetism Trackpad.
Optionally, described electromagnetism Trackpad is embedded on the described glue frame by screw or buckle.
Accordingly, the present invention also provides a kind of liquid crystal indicator to comprise:
One LCDs; And
Described electromagnetic touch-control module backlight.
Electromagnetic touch-control provided by the present invention module backlight comprises a glue frame and the electromagnetism Trackpad that is embedded on the described glue frame, and wherein, the YIELD STRENGTH of described glue frame is more than or equal to 90MPa.Electromagnetism Trackpad in above-mentioned electromagnetic touch-control module backlight is arranged on the glue frame, at the electromagnetism Trackpad be positioned at time writer on the electromagnetism Trackpad in when work, the acting force of electromagnetism touch-control therebetween can not penetrate the backboard with ferromagnetic material, does not therefore exist backboard to the interference of electromagnetism touch-control.In addition, because the material yield intensity of described glue frame is more than or equal to 90MPa, described glue frame has the intensity identical with the prior art dorsulum, only use the glue frame just can reach the holding power of original backboard, therefore can omit backboard, also not have the relevant design of opening or the attenuate of backboard naturally, greatly reduce the design difficulty of electromagnetic touch-control module backlight, because omitted backboard, can also reduce the material cost of electromagnetic touch-control module backlight simultaneously.
Description of drawings
Fig. 1 is the composition synoptic diagram of electromagnetic touch-control module backlight in the prior art;
Fig. 2 is the section of structure of electromagnetic touch-control module backlight in the prior art;
Fig. 3 is the composition synoptic diagram of the electromagnetic touch-control module backlight of one embodiment of the invention;
Fig. 4 is the section of structure of the electromagnetic touch-control module backlight of one embodiment of the invention;
Fig. 5 is the vertical view of the electromagnetism Trackpad of another embodiment of the present invention;
Fig. 6 is the section of structure of the electromagnetic touch-control module backlight in another enforcement of the present invention;
Fig. 7 is the section of structure of the liquid crystal indicator of further embodiment of this invention.
Embodiment
Core concept of the present invention is, improves the intensity of glue frame material, and the electromagnetism Trackpad is embedded on the described glue frame, reduces the backboard of ferromagnetic material to the interference of electromagnetism touch-control with this.Simultaneously, because the intensity of glue frame material is enough, the glue frame also can be realized the mechanical support effect finished by original backboard, therefore in electromagnetic touch-control of the present invention module backlight, can omit backboard, thereby avoided because the design difficulty that back plate design is brought has also reduced material cost simultaneously.
In order to make purpose of the present invention, technical scheme and advantage are clearer, further elaborate below in conjunction with accompanying drawing.
As shown in Figure 3, the electromagnetic touch-control of one embodiment of the invention module 200 backlight comprises a glue frame 201 and the electromagnetism Trackpad 202 that is embedded on the described glue frame 201, and wherein, the YIELD STRENGTH of described glue frame 201 is more than or equal to 90MPa.
As shown in Figure 4, in the module 200 backlight of the electromagnetic touch-control after assembling, described electromagnetism Trackpad 202 is embedded on the described glue frame 201.When undersized electromagnetic touch-control module backlight, when for example size is smaller or equal to 12 inches, the intensity of described glue frame 201 (yield strength is more than or equal to 90MPa) enough supports the various assemblies of described electromagnetic touch-control module 200 backlight, and need not to increase backboard again.Omit the electromagnetic touch-control module 200 backlight of backboard, fundamentally stopped the interference of backboard to the electromagnetism touch-control, also do not existed because will reduce backboard to necessity of the optimal design of electromagnetism touch-control interference, reduced design difficulty, also reduced material cost simultaneously.
Continuation is with reference to figure 4, and described glue frame 201 is provided with hole 2011, and described electromagnetism Trackpad 202 can be entrenched on the described glue frame 201 by screw 2021 and described hole 2011.Certainly, described electromagnetism Trackpad 202 also can be connected with described glue frame 201 by other chimeric modes, for example by buckle is chimeric described electromagnetism Trackpad 202 is connected with described glue frame 201.
Electromagnetism Trackpad 202 is arranged on the described glue frame 201, and in order further to reduce the interference to the electromagnetism touch-control, the material of described glue frame 201 can be chosen as nonmagnetic substance, for example aluminium alloy, magnesium alloy electricity or almag etc.When electromagnetism Trackpad 202 with when being positioned at electromagnetism pointer on the electromagnetism Trackpad 202 in work, because do not deposit magnetic material around it, so the effect of its electromagnetism touch-control can effectively be improved.
In addition, when the electromagnetic touch-control module backlight of middle size, when for example size is between 12 inches to 19 inches, as long as the intensity of glue frame 201 is enough, can omit backboard equally.Concrete, the yield strength that waits described glue frame 201 is during greater than 260MPa, only depends on the various assemblies that glue frame 201 just can described electromagnetic touch-control module 200 backlight, and need not to use backboard.
In addition, for described electromagnetic touch-control module 200 backlight is more light, described glue frame 201 can be selected the little material of proportion glue, and specifically, the proportion of the material of described glue frame is less than or equal to 7.82g/cm 3For example described glue frame 201 materials are a kind of of carbon fibre, melamine, acrylic or PVC.
Continuation is with reference to figure 4, and described electromagnetic touch-control module 200 backlight also comprises reflector plate 203, light guide plate 204 and optical diaphragm group 205.Wherein, described reflector plate 203 is installed on the described electromagnetism Trackpad 202, and described light guide plate 204 is arranged on the described reflector plate 203, and described optical diaphragm group 205 is arranged on the described light guide plate 204.The lower surface of described reflector plate 203 directly contacts with the upper surface of described electromagnetism Trackpad 202.
In order to make electromagnetic touch-control module backlight lighter, also electromagnetism Trackpad and reflector plate can be combined.Concrete, in another embodiment, in conjunction with Fig. 5 and Fig. 6, also can directly apply reflection horizon 206 on the surface of described electromagnetism Trackpad 202.In electromagnetic touch-control after assembling the is finished module 200 backlight, described light guide plate 204 directly contacts with the surface that described electromagnetism Trackpad 202 applies reflection horizon 206.
As shown in Figure 7, in another embodiment of the present invention, also provide a kind of liquid crystal indicator 300, comprise a LCDs 301, touching device 302, described electromagnetic touch-control module 200 backlight and an electromagnetism pointer 303.In the touch-control process, between electromagnetism pointer 303 and described electromagnetism Trackpad 202, not at the assembly of backboard or other magnetic materials, thereby improve electromagnetism touch-control effect.
In sum, in above-mentioned electromagnetic touch-control module backlight, described electromagnetism Trackpad is arranged on the glue frame, at the electromagnetism Trackpad be positioned at time writer on the electromagnetism Trackpad in when work, the acting force of electromagnetism touch-control therebetween can not penetrate the backboard with ferromagnetic material, does not therefore exist backboard to the interference of electromagnetism touch-control.In addition, because the material yield intensity of described glue frame is more than or equal to 90MPa, described glue frame has the intensity identical with the prior art dorsulum, only use the glue frame just can reach the holding power of original backboard, therefore can omit backboard, also not have the relevant design of opening or the attenuate of backboard naturally, greatly reduce the design difficulty of electromagnetic touch-control module backlight, because omitted backboard, can also reduce the material cost of electromagnetic touch-control module backlight simultaneously.
Obviously, those skilled in the art can carry out various changes and modification to invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these revise and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these change and modification.

Claims (10)

1. electromagnetic touch-control module backlight comprises:
One glue frame, the YIELD STRENGTH of described glue frame is more than or equal to 90MPa; And
Be embedded in the electromagnetism Trackpad on the described glue frame.
2. electromagnetic touch-control module backlight according to claim 1 is characterized in that the YIELD STRENGTH of described glue frame is greater than 260MPa.
3. electromagnetic touch-control module backlight according to claim 1 is characterized in that the material of described glue frame is nonmagnetic substance.
4. as electromagnetic touch-control module backlight as described in the claim 3, it is characterized in that the material of described glue frame is aluminium alloy or magnesium alloy.
5. as electromagnetic touch-control module backlight as described in the claim 3, it is characterized in that the proportion of the material of described glue frame is less than or equal to 7.82g/cm 3
6. as electromagnetic touch-control module backlight as described in the claim 5, it is characterized in that described glue frame material is a kind of of carbon fibre, melamine, acrylic or PVC.
7. electromagnetic touch-control module backlight according to claim 1 is characterized in that, also comprises the reflector plate that is installed on the described electromagnetism Trackpad.
8. electromagnetic touch-control module backlight according to claim 1 is characterized in that, also comprises the reflection horizon that is coated on the described electromagnetism Trackpad.
9. electromagnetic touch-control module backlight according to claim 1 is characterized in that described electromagnetism Trackpad is embedded on the described glue frame by screw or buckle.
10. liquid crystal indicator comprises:
One LCDs; And
As any described electromagnetic touch-control module backlight in the claim 1 to 9.
CN201210576947.8A 2012-12-26 2012-12-26 A kind of electromagnetic touch-control backlight module and liquid crystal indicator Active CN103278965B (en)

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CN104534351A (en) * 2014-12-11 2015-04-22 青岛海信电器股份有限公司 Backlight module and display device
CN104536639A (en) * 2014-12-19 2015-04-22 惠科电子(深圳)有限公司 Sensing control structure, infrared electromagnetic touch screen and double-contact liquid crystal integrated machine
CN104536622A (en) * 2014-12-19 2015-04-22 惠科电子(深圳)有限公司 Infrared electromagnetic touch screen and double-touch liquid crystal integrated machine
WO2017193812A1 (en) * 2016-05-11 2017-11-16 京东方科技集团股份有限公司 Backlight module, display device, and digital drawing tablet
CN110570766A (en) * 2019-09-06 2019-12-13 厦门天马微电子有限公司 Backlight module and display device
WO2020097996A1 (en) * 2018-11-14 2020-05-22 深圳市友基技术有限公司 Mounting and fixing structure for electromagnetic screen, and display

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CN102269896A (en) * 2011-06-07 2011-12-07 友达光电股份有限公司 Touch control type liquid crystal display
CN202133987U (en) * 2011-07-22 2012-02-01 北京京东方光电科技有限公司 Electromagnetic induction antenna plate, backlight source and display device

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US20040105040A1 (en) * 2002-11-14 2004-06-03 Oh Eui Yeol Touch panel for display device
JP2004302433A (en) * 2003-03-28 2004-10-28 Lg Philips Lcd Co Ltd Liquid crystal display device with digitizer
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Publication number Priority date Publication date Assignee Title
CN104534351A (en) * 2014-12-11 2015-04-22 青岛海信电器股份有限公司 Backlight module and display device
CN104536639A (en) * 2014-12-19 2015-04-22 惠科电子(深圳)有限公司 Sensing control structure, infrared electromagnetic touch screen and double-contact liquid crystal integrated machine
CN104536622A (en) * 2014-12-19 2015-04-22 惠科电子(深圳)有限公司 Infrared electromagnetic touch screen and double-touch liquid crystal integrated machine
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WO2020097996A1 (en) * 2018-11-14 2020-05-22 深圳市友基技术有限公司 Mounting and fixing structure for electromagnetic screen, and display
CN110570766A (en) * 2019-09-06 2019-12-13 厦门天马微电子有限公司 Backlight module and display device
CN110570766B (en) * 2019-09-06 2021-12-10 厦门天马微电子有限公司 Backlight module and display device

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