CN105929584A - Uniform heating device of liquid crystal screen - Google Patents
Uniform heating device of liquid crystal screen Download PDFInfo
- Publication number
- CN105929584A CN105929584A CN201610475038.3A CN201610475038A CN105929584A CN 105929584 A CN105929584 A CN 105929584A CN 201610475038 A CN201610475038 A CN 201610475038A CN 105929584 A CN105929584 A CN 105929584A
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- China
- Prior art keywords
- heating
- liquid crystal
- display screen
- crystal display
- segmented electrode
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- 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.)
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Classifications
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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
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
Abstract
The invention discloses a uniform heating device of a liquid crystal screen. The uniform heating device of the liquid crystal screen comprises a heating layer, first sectional electrode strips and second sectional electrode strips, wherein the lower surface of the heating layer is arranged on the surface of the liquid crystal screen, and a first edge and a second edge are formed on the heating layer in parallel; the first sectional electrode strips are arranged at the edge, near the first edge, of the heating layer, and are arranged at intervals along the length direction of the first edge; the second sectional electrode strips are arranged at the edge, near the second edge, of the heating layer, and are symmetric to the first sectional electrode strips. The uniform heating device of the liquid crystal screen has the advantage that the problem of bluing or whitening of four corners of the liquid crystal screen of the prior art after heating is solved, and the uniform display of whole color is realized.
Description
Technical field
The present invention relates to the field controlling heating of liquid crystal display screen, in particular it relates to liquid crystal display screen uniformly adds hot charging
Put.
Background technology
Along with the development of science and technology, Display Technique also achieves the most progressive, obtains general at present
Being LCD all over the display medium used, LCD product also tends to variation, and application is the most extensive.
Such as, the display screen majority being applied on mobile phone or panel computer or LCD, in the application of empty field, sky
Display medium is also LCD, and the display screen in plant equipment remains LCD under various industrial environments
Type.That is LCD has obtained being widely applied very much as display medium.On the one hand due to LCD
Product is made technique and is tended to ripe, and the cost of product is relatively low；On the other hand the life-span of LCD product is also
The big advantage of one.
Since LCD product is widely used in different field, different industries, the most also it is faced with
Varying environment is to the restriction of LCD product or demand.It is understood that its critical material of LCD display is exactly
Liquid crystal Liquid Crystal, this material is a kind of state between solid-state (crystal) and liquid,
Due to the character of itself, liquid crystal determines that it can be controlled by electric field, big as well as electric field of liquid crystal molecule
The angle that primary deflector is different, thus finally can reach the control of brightness (gray scale), complete to show picture.
Liquid crystal material has its clearing point and crystalline temperature, when temperature arrives or when exceeding clearing point, liquid crystal in
Revealing the character of liquid, Liquid Crystal Molecules Alignment has no order, anisotropy；When temperature arrives or less than knot
During brilliant point, liquid crystal presents the character of solid-state (crystal), and Liquid Crystal Molecules Alignment has evident regularity.Just because of
There is the restriction of its clearing point and crystalline temperature for liquid crystal material, thus liquid crystal just has certain operating temperature model
Enclosing, the operating temperature range of LCD display is (-30～+80) DEG C under normal circumstances.When temperature is low
In-30 DEG C time, liquid crystal presents solid-state, and no matter how electric field intensity changes, and liquid crystal molecule is all without with electricity
Field deflection, therefore cannot complete to show picture.Some field or facility environment need in actual applications
Less than-30 DEG C work, thus LCD product is proposed high requirement.
The heating uniformity of general heating device is not good enough at present, generally the LCD tetra-after heating
Angle all can present the phenomenon turned blue or turn white.So needing to improve on heating uniformity.
Summary of the invention
It is an object of the invention to provide a kind of liquid crystal display screen device for homogenous heating, this liquid crystal display screen device for homogenous heating
Overcome liquid crystal display screen of the prior art and all can present the phenomenon turned blue or turn white in corner after heating, real
Showed integral color compared with uniform display.
To achieve these goals, the invention provides a kind of liquid crystal display screen device for homogenous heating, this liquid crystal display screen
Device for homogenous heating includes: zone of heating, and the lower surface of described zone of heating is arranged on the surface of liquid crystal display screen,
And on described zone of heating, it being formed with the first limit, parallel ground and the second limit, this liquid crystal display screen device for homogenous heating is also
Including: the first segmented electrode bar and the second segmented electrode bar, described first segmented electrode bar is arranged at described
Zone of heating is near the edge on described first limit, and multiple described first segmented electrode bars are along the length on described first limit
Degree direction setting separately；Described second segmented electrode bar is arranged at described zone of heating near described second
The edge on limit, and described second segmented electrode bar and the described first symmetrical setting of segmented electrode bar.
Preferably, described first segmented electrode bar is along the equally spaced setting of length direction on described first limit.
Preferably, described second segmented electrode bar is along the equally spaced setting of length direction on described second limit.
Preferably, the two ends on described first limit are provided with two described first segmented electrode bars；Described
The two ends on the second limit are provided with two described second segmented electrode bars.
Preferably, this liquid crystal display screen device for homogenous heating also includes: power supply, and the both positive and negative polarity of described power supply is electrically connected
It is connected to described first segmented electrode bar；And the both positive and negative polarity of described power supply is electrically connected to described second segmentation
Electrode strip.
Preferably, described zone of heating includes: heater glass and heating material, and described heating material is plated on
On the upper surface of described heater glass；Described first segmented electrode bar is arranged at described zone of heating near institute
State the edge on the first limit；State the second segmented electrode bar and be arranged at the described zone of heating limit near described second limit
Edge.
Preferably, described heating material is tin indium oxide.
By above-mentioned embodiment, the heating of the liquid crystal display screen device for homogenous heating of the present invention is very uniform, changes
It is apt to the phenomenon turned blue or turn white in liquid crystal display screen low temperature corner, by the way of new heater electrode, permissible
The heating making liquid crystal display screen is the most uniform.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with
Detailed description below is used for explaining the present invention together, but is not intended that limitation of the present invention.?
In accompanying drawing:
Fig. 1 is the cross-sectional view of a kind of liquid crystal display screen device for homogenous heating that the present invention is described；
Fig. 2 is the heating distribution map of the electric field of a kind of former liquid crystal display screen device for homogenous heating that the present invention is described；
Fig. 3 is the heating-up temperature field pattern of a kind of former liquid crystal display screen device for homogenous heating that the present invention is described；
Fig. 4 is the structural representation of the liquid crystal display screen device for homogenous heating after a modification of the present invention is described；
Fig. 5 is the heating Electric Field Distribution of the liquid crystal display screen device for homogenous heating after a modification of the present invention is described
Figure；
Fig. 6 is that the heating-up temperature field of the liquid crystal display screen device for homogenous heating after a modification of the present invention is described is divided
Butut.
Description of reference numerals
1 heater glass 2 heating material
3 first segmented electrode bars
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It should be appreciated that
Detailed description of the invention described herein is merely to illustrate and explains the present invention, is not limited to this
Bright.
The present invention provides a kind of liquid crystal display screen device for homogenous heating, and this liquid crystal display screen device for homogenous heating includes: add
Thermosphere, the lower surface of described zone of heating is arranged on the surface of liquid crystal display screen, and is formed on described zone of heating
The first limit, parallel ground and the second limit, this liquid crystal display screen device for homogenous heating also includes: the first segmented electrode bar
3 and the second segmented electrode bar, described first segmented electrode article 3 is arranged at described zone of heating near described
Edge on one side, multiple described first segmented electrode bars 3 along described first limit length direction separately
Arrange；Described second segmented electrode bar is arranged at the described zone of heating edge near described second limit, and institute
State the second segmented electrode bar and the described first symmetrical setting of segmented electrode bar 3.
By above-mentioned embodiment, the heating of the liquid crystal display screen device for homogenous heating of the present invention is very uniform, changes
It is apt to the phenomenon turned blue or turn white in liquid crystal display screen low temperature corner, by the way of new heater electrode, permissible
The heating making liquid crystal display screen is the most uniform.First segmented electrode bar 3 and described second segmented electrode bar lead to
Often material is silver slurry or copper.
Wherein, Fig. 1 is the heater generalized section that heating uniformity is not good enough；Fig. 2 is heating uniformity
Not good enough heating distribution map of the electric field；Owing to the resistivity of heating electrode strip itself is the least, substantially can ignore
Disregard, so voltage everywhere is identical on same electrode strip: Ua=Uc, Ub=Ud.Applying
It is identical that voltage carries out the pressure reduction everywhere in heating process between two electrode strips: Ua-Ub=Uc-Ud, by
Fig. 2 can be seen that heater surfaces heating power density everywhere is identical.
Fig. 3 is the heating-up temperature field pattern that heating uniformity is not good enough.Although heater surfaces adding everywhere
Thermal power is identical, but due to the morpheme factor of heater itself, central area heat radiation can be caused less,
Heat insulation effect is good；Corner heat radiation is relatively big, the result of heat insulation effect difference.As can be seen from the figure heated
The thermo parameters method of heater surfaces: A > B > C > D in journey.Between A-D, the temperature difference reaches to a certain degree
Time, can cause heating uneven, being finally presented in liquid crystal display screen display effect is exactly to turn blue or turn white in corner
Phenomenon.
Fig. 4 is the heater structure of new homogeneous heating, as seen from the figure the electrode strip at heater two ends
The mode using segmentation heats.If the length that L is segmented electrode bar, if l is adjacent both ends electrode
Spacing between bar.Namely original whole piece electrode strip is divided into one section one section distribution, and in heating
The corner of device all connects the both positive and negative polarity of power supply.
Fig. 5 is the heating Electric Field Distribution of new heater, the most equally distributed adds
Thermocurrent flows to the curve having become there is the fixing flow direction.After the segmentation again, arrangement of electrode strip, bright
Show and can be seen that current direction trends towards corner location, compared with the current direction originally flowed vertically to, limit
Heating power density on Angle Position is substantially big than the heating power density at center, thus reaches to add hot merit
The effect that rate density is redistributed.Since uniform heating power density does not reaches uniform heating-up temperature and divides
Cloth, so needing uneven heating power density to reach the distribution of uniform heating-up temperature.When corner
When temperature is on the low side, it is necessary to strengthen its power density, to strengthen the caloric value on corner location, reach
The effect of homogeneous heating.Being determined by experiment, corner location pressure reduction is bigger than center pressure reduction:
Ua-Ub > Uc-Ud, thus complete the transfer of heating power, the heating power of corner location increases, in
The heating power of the heart declines, and is finally reached the uniform of thermo parameters method.
Fig. 6 is new heter temperature field distribution, through measuring it appeared that the heater improved
Surface temperature field distribution: A=B=C=D.Make liquid crystal display screen can be heated evenly on each position when low temperature,
Thus display defect when eliminating low-temperature heat.
In a kind of detailed description of the invention of the present invention, described first segmented electrode bar 3 is along described first limit
The equally spaced setting of length direction.
In a kind of detailed description of the invention of the present invention, described second segmented electrode bar is along described second limit
The equally spaced setting of length direction.
In a kind of detailed description of the invention of the present invention, in order to prevent the two ends on the first limit from can heat,
Two described first segmented electrode bars 3 it are provided with at the two ends on described first limit；On described second limit two
End is provided with two described second segmented electrode bars.
In a kind of detailed description of the invention of the present invention, in order to realize power supply heating, this liquid crystal display screen uniformly adds
Thermal can also include: power supply, and the both positive and negative polarity of described power supply is electrically connected to described first segmented electrode bar
3；And the both positive and negative polarity of described power supply is electrically connected to described second segmented electrode bar.
In a kind of detailed description of the invention of the present invention, described zone of heating may include that heater glass 1
With heating material 2, described heating material 2 is plated on the upper surface of described heater glass 1；Described
One segmented electrode bar 3 is arranged at the described zone of heating edge near described first limit；State the second segmented electrode
Bar is arranged at the described zone of heating edge near described second limit.
In this kind of embodiment, described heating material 2 is tin indium oxide.
Summary is discussed it is known that the thermo parameters method of heater surfaces is can to reach to imitate uniformly
Really.Main improvement means are completed by segmented electrode bar, as electrode strip segmentation quantity,
The parameters such as the every length of segment electrode bar, spacing are to need according to actual product and demand, the mensuration of experiment
Or emulation determines.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention does not limit
Detail in above-mentioned embodiment, in the technology concept of the present invention, can be to the present invention
Technical scheme carry out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, various possible compound modes are illustrated by the present invention the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as its
Without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. a liquid crystal display screen device for homogenous heating, this liquid crystal display screen device for homogenous heating includes: zone of heating,
The lower surface of described zone of heating is arranged on the surface of liquid crystal display screen, and is formed parallel on described zone of heating
The first limit, ground and the second limit, it is characterised in that this liquid crystal display screen device for homogenous heating also includes: the first segmentation
Electrode strip (3) and the second segmented electrode bar, described first segmented electrode bar (3) is arranged at described heating
Layer is near the edge on described first limit, and multiple described first segmented electrode bars (3) are along described first limit
Length direction setting separately；Described second segmented electrode article is arranged at described zone of heating near described
The edge on two limits, and described second segmented electrode bar and described first segmented electrode bar (3) is symmetrical sets
Put.
Liquid crystal display screen device for homogenous heating the most according to claim 1, it is characterised in that described
One segmented electrode bar (3) is along the equally spaced setting of length direction on described first limit.
Liquid crystal display screen device for homogenous heating the most according to claim 1, it is characterised in that described
Two-section electrode strip is along the equally spaced setting of length direction on described second limit.
Liquid crystal display screen device for homogenous heating the most according to claim 1, it is characterised in that described
The two ends on the first limit are provided with two described first segmented electrode bars (3)；Set at the two ends on described second limit
It is equipped with two described second segmented electrode bars.
Liquid crystal display screen device for homogenous heating the most according to claim 1, it is characterised in that this liquid crystal
Screen device for homogenous heating also includes: power supply, the both positive and negative polarity of described power supply is electrically connected to described first Segmented electrical
Pole bar (3)；And the both positive and negative polarity of described power supply is electrically connected to described second segmented electrode bar.
Liquid crystal display screen device for homogenous heating the most according to claim 1, it is characterised in that described in add
Thermosphere includes: heater glass (1) and heating material (2), and described heating material (2) is plated on described
On the upper surface of heater glass (1)；Described first segmented electrode bar (3) is arranged at described zone of heating
Edge near described first limit；State the second segmented electrode bar and be arranged at described zone of heating near described second
The edge on limit.
Liquid crystal display screen device for homogenous heating the most according to claim 6, it is characterised in that described in add
Hot material (2) is tin indium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610475038.3A CN105929584A (en) | 2016-06-27 | 2016-06-27 | Uniform heating device of liquid crystal screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610475038.3A CN105929584A (en) | 2016-06-27 | 2016-06-27 | Uniform heating device of liquid crystal screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105929584A true CN105929584A (en) | 2016-09-07 |
Family
ID=56829312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610475038.3A Pending CN105929584A (en) | 2016-06-27 | 2016-06-27 | Uniform heating device of liquid crystal screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN105929584A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041308A (en) * | 2018-09-21 | 2018-12-18 | 苏州本瑞光电科技有限公司 | A kind of electric heating function glass and display module |
| CN109089335A (en) * | 2017-06-14 | 2018-12-25 | 北京北方华创微电子装备有限公司 | It is a kind of improve line temperature consistency heating tape and its design method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007007396A1 (en) * | 2005-07-12 | 2007-01-18 | Fujitsu Hitachi Plasma Display Limited | Display device provided with glass panel and method for separating same |
| CN201383059Y (en) * | 2009-03-24 | 2010-01-13 | 天马微电子股份有限公司 | ITO heater |
| CN103033967A (en) * | 2012-12-19 | 2013-04-10 | 中航华东光电有限公司 | Liquid crystal display screen with heating function |
| CN203587919U (en) * | 2013-11-22 | 2014-05-07 | 中航华东光电有限公司 | Heating uniformity improving device for specially-shaped liquid crystal display screen |
-
2016
- 2016-06-27 CN CN201610475038.3A patent/CN105929584A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007007396A1 (en) * | 2005-07-12 | 2007-01-18 | Fujitsu Hitachi Plasma Display Limited | Display device provided with glass panel and method for separating same |
| CN201383059Y (en) * | 2009-03-24 | 2010-01-13 | 天马微电子股份有限公司 | ITO heater |
| CN103033967A (en) * | 2012-12-19 | 2013-04-10 | 中航华东光电有限公司 | Liquid crystal display screen with heating function |
| CN203587919U (en) * | 2013-11-22 | 2014-05-07 | 中航华东光电有限公司 | Heating uniformity improving device for specially-shaped liquid crystal display screen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109089335A (en) * | 2017-06-14 | 2018-12-25 | 北京北方华创微电子装备有限公司 | It is a kind of improve line temperature consistency heating tape and its design method |
| CN109089335B (en) * | 2017-06-14 | 2021-06-08 | 北京北方华创微电子装备有限公司 | Heating belt for improving temperature consistency of pipeline and design method thereof |
| CN109041308A (en) * | 2018-09-21 | 2018-12-18 | 苏州本瑞光电科技有限公司 | A kind of electric heating function glass and display module |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |
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| RJ01 | Rejection of invention patent application after publication |