CN102749760B - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN102749760B CN102749760B CN201210259902.8A CN201210259902A CN102749760B CN 102749760 B CN102749760 B CN 102749760B CN 201210259902 A CN201210259902 A CN 201210259902A CN 102749760 B CN102749760 B CN 102749760B
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- liquid crystal
- filling material
- add
- coefficient
- volumetric expansion
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Abstract
The invention discloses a liquid crystal display device which comprises relatively arranged array substrate and color film substrate and a liquid crystal clamped between the array substrate and the color film substrate, wherein a supporting substance is arranged between the color film substrate and the array substrate, and a filling substance made of a thermal expansion material is arranged between the ITO (Indium Tin Oxide) layer of the color film substrate and the supporting substance or between the ITO layer of the array substrate and the supporting substance. The invention solves the problems that low-temperature air bubbles are produced in the display region of a liquid crystal panel at low temperature and high-temperature vertical flow is produced at high temperature.
Description
Technical field
The present invention relates to a kind of display device, particularly a kind of liquid crystal indicator.
Background technology
Liquid crystal panel Making programme: as shown in Figure 1, makes color membrane substrates 2 and array base palte 1, color membrane substrates 2 and array base palte 1 is coated with one deck alignment film (not shown), gives liquid crystal orientation; Color membrane substrates 2 or array base palte 1 are coated with a circle sealed plastic box 4, and the liquid crystal 5 using liquid crystal dripping device to drip appropriate in the region that sealed plastic box surrounds, fits another piece of substrate with it in vacuum environment; Use UV-irradiation and thermmohardening that sealed plastic box is hardened fixing (sealed plastic box is shaping), prevent color membrane substrates and array base palte because there is skew dislocation by external force, and cause the decline of aligning accuracy, impact display.In figure, rgb pixel region is viewing area 3, and the part in sealed plastic box beyond viewing area is non-display area 6.
As shown in Figure 2, when ambient temperature step-down, liquid crystal 5 density with temperature in liquid crystal panel (being called for short " panel ") sealed plastic box 4 changes increase, liquid crystal 5 volume reduces, due to the support of Main PS (this figure is not shown for MainPhoto Spacer, main column support), box is thick substantially unchanged, causes producing low-temperature bubbles 7 in liquid crystal panel viewing area 3.As shown in Figure 3, when ambient temperature uprises, liquid crystal 5 density with temperature in Liquid crystal display panel frame glue 4 diminishes, and liquid crystal 5 volume becomes large, when liquid crystal panel is vertically placed, because Action of Gravity Field liquid crystal 5 will be assembled, causes high temperature to hang down stream 8 downwards.
Summary of the invention
Goal of the invention: for above-mentioned prior art Problems existing and deficiency, the object of this invention is to provide a kind of liquid crystal indicator, solves when low temperature, produces low-temperature bubbles in liquid crystal panel viewing area; When high temperature, produce high temperature hang down stream problem.
Technical scheme: for achieving the above object, the technical solution used in the present invention is a kind of liquid crystal indicator, comprise the array base palte and color membrane substrates that are oppositely arranged and the liquid crystal be folded between array base palte and color membrane substrates, between described color membrane substrates and array base palte, be provided with stilt, between the ITO layer and stilt of described color membrane substrates or between the ITO layer of array base palte and stilt, be provided with the filling material be made up of thermal expansion material.
Further, the coefficient of volumetric expansion β of described filling material
addsatisfy condition: 6.7 β
liquid crystal≤ β
add≤ 13.4 β
liquid crystal, wherein, β
addfor the coefficient of volumetric expansion of filling material, β
liquid crystalfor the coefficient of volumetric expansion of liquid crystal.
Further, when the thickness of filling material is 0.5um, the relational expression of the coefficient of volumetric expansion of filling material and the coefficient of volumetric expansion of liquid crystal is: β
add≈ 13.4 β
liquid crystal.When the thickness of filling material is 1.0 μm, the relational expression of the coefficient of volumetric expansion of filling material and the coefficient of volumetric expansion of liquid crystal is: β
add≈ 6.7 β
liquid crystal.
Further, described filling material uses the mode of coating to be arranged between the ITO layer of described color membrane substrates and stilt or between the ITO layer of array base palte and stilt.
Further, the shape of described filling material is quadrilateral.
Further, the thickness of described filling material is 0.5um to 1.0um.
Further, the thickness of above support is 2um to 3um.
Further, the coefficient of volumetric expansion of described filling material is 0.5 × 10
-5to 1.0 × 10
-5between.
Further, above support is main column support.
Beneficial effect: the present invention by being coated with a kind of filling material be made up of thermal expansion material between the ITO layer and Main PS of color membrane substrates or array base palte, when ambient temperature step-down, this filling material volumetric contraction, box is thick to diminish, and can repair on the low side due to amount of liquid crystal in liquid crystal cell and the low-temperature bubbles of generation etc. are bad; When ambient temperature raises, this filling material volumetric expansion, the thick change of box is large, can repair because amount of liquid crystal in liquid crystal cell is on the high side and cause hang down stream etc. of high temperature bad and expand the serviceability temperature scope of liquid crystal display.The material of making of this filling material can be that coefficient of volumetric expansion is 0.5 × 10
-5to 1.0 × 10
-5multiple material, such as thermoplastic resin materials etc., this filling material does not react with other material in liquid crystal cell used and the coefficient of volumetric expansion of this filling material satisfies condition: 6.7 β
liquid crystal≤ β
add≤ 13.4 β
liquid crystal.
Accompanying drawing explanation
Fig. 1 is the floor map of liquid crystal panel;
Fig. 2 be ambient temperature lower time in viewing area, produce the schematic diagram of low-temperature bubbles;
Fig. 3 be ambient temperature higher time viewing area produce high temperature hang down stream schematic diagram;
The schematic cross-section at general panels Main PS place when Fig. 4 is normal temperature;
The schematic cross-section at general panels Main PS place when Fig. 5 is high temperature;
The schematic cross-section at general panels Main PS place when Fig. 6 is low temperature;
The schematic cross-section at the panel Main PS place of thermal expansion material is added when Fig. 7 is normal temperature;
The schematic cross-section at the panel Main PS place of thermal expansion material is added when Fig. 8 is high temperature;
The schematic cross-section at the panel Main PS place of thermal expansion material is added when Fig. 9 is low temperature.
In figure, 1, array base palte, 2, color membrane substrates, 3, viewing area, 4, sealed plastic box, 5, liquid crystal, 6, non-display area, 7, low-temperature bubbles, 8, high temperature hangs down stream, and 9, gate line, 10, concentric line, 11, the first glass, 12, insulation course, the 13, first ITO layer, 14, the second glass, 15, cyan coloring layer, the 16, second ITO layer, 17, shading resin bed, 18, main column support, 19, filling material.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
The present invention is specifically coated with a kind of filling material be made up of thermal expansion material between the ITO layer of color membrane substrates and main column support or between the ITO layer of array base palte and main column support, when ambient temperature step-down, this filling material volumetric contraction, box is thick to diminish, and can repair on the low side due to amount of liquid crystal in liquid crystal cell and the low-temperature bubbles of generation etc. are bad; When ambient temperature raises, this filling material volumetric expansion, the thick change of box is large, can repair because amount of liquid crystal in liquid crystal cell is on the high side and cause hang down stream etc. of high temperature bad and expand the serviceability temperature scope of liquid crystal display.The material of making of this filling material can be that coefficient of volumetric expansion is 0.5 × 10
-5to 1.0 × 10
-5multiple material, such as thermoplastic resin materials etc., this filling material does not react and the coefficient of volumetric expansion β of this filling material with other material in liquid crystal cell used
addsatisfy condition: 6.7 β
liquid crystal≤ β
add≤ 13.4 β
liquid crystal, derivation is as follows: known conditions:
Coefficient of volumetric expansion β: β=Δ V/ (V × Δ T), in formula, Δ V is the variable quantity of volume, and V is volume, and Δ T is the variable quantity of temperature;
Liquid crystal density p: ρ=-0.00078t+1.05; (ρ
liquid crystal ,-10 DEG C=1.0578; ρ
liquid crystal, 25 DEG C=1.0305; ρ
liquid crystal, 50 DEG C=1.011), in formula, t is temperature;
The mass conservation;
Δ V
liquid crystal=Δ V
add, namely the variable quantity of liquid crystal volume is equal with the variable quantity of additive volume.Be designed to example with 21.5 inch liquid crystal panels, the Adding Area of additive is between the main column support of viewing area and ITO:
On Gate (grid) line of Main PS (Main Photo Spacer, main column support) position: B (blueness) pixel (Pixel)
The unit (referring to Main PS) repeated: (number/Pixel): 1/4RGB
Number=1920 × 1080 × 1/4=518400
Shape: quadrilateral size (μm)=8*16
Under normal temperature during t=25 DEG C,
∵ V
liquid crystal, 25 DEG C=446.2ml, ρ
liquid crystal, 25 DEG C=1.0305mg/ml
∴ m
liquid crystal=459.8091mg
If the height h of additive
add=0.5 μm
V
add=518400 × 8 × 16 × 0.5=33.1776mm
3
When ambient temperature changes between 25 DEG C to-10 DEG C, △ t
1=-35 DEG C
△ V
liquid crystal 1=V
liquid crystal ,-10 DEG C-V
liquid crystal, 25 DEG C=m
liquid crystal/ ρ
liquid crystal ,-10 DEG C-446.2=-11.5157
∴ β
liquid crystal 1=Δ V
liquid crystal 1/ (V
liquid crystal, 25 DEG C× Δ t
1)=0.00074
∵ Δ V
add 1=Δ V
liquid crystal 1
∴ β
add 1=Δ V
add 1/ (V
add, 25 DEG C× Δ t
1)=Δ V
liquid crystal 1/ (V
add, 25 DEG C× Δ t
1)=0.009917
∴ β
add 1/ β
liquid crystal 1=13.4013
When ambient temperature changes between 25 DEG C to 50 DEG C, △ t
2=25 DEG C
△ V
liquid crystal 2=V
liquid crystal, 50 DEG C-V
liquid crystal, 25 DEG C=m
liquid crystal/ ρ
liquid crystal, 50 DEG C-446.2=8.606231
∴ β
liquid crystal 2=Δ V
liquid crystal 2/ (V
liquid crystal, 25 DEG C× Δ t
2)=0.000772
∵ Δ V
add 2=Δ V
liquid crystal 2
∴ β
add 2=Δ V
add 2/ (V
add, 25 DEG C× Δ t
2)=0.010376
∴ β
add 2/ β
liquid crystal 2=13.4404
Obtain the height h when additive
addwhen=0.5 μm, the coefficient of volumetric expansion of additive and the relational expression of liquid crystal expansion coefficient are: β
add≈ 13.4 β
liquid crystal
If the height h of additive
add=1.0 μm
V
add=518400 × 8 × 16 × 1.0=66.3552mm
3
When ambient temperature changes between 25 DEG C to-10 DEG C, △ t
1=-35 DEG C
△ V
liquid crystal 1=V
liquid crystal ,-10 DEG C-V
liquid crystal, 25 DEG C=m
liquid crystal/ ρ
liquid crystal ,-10 DEG C-446.2=-11.5157
∴ β
liquid crystal 1=Δ V
liquid crystal 1/ (V
liquid crystal, 25 DEG C× Δ t
1)=0.00074
∵ Δ V
add 1=Δ V
liquid crystal 1
∴ β
add 1=Δ V
add 1/ (V
add, 25 DEG C× Δ t
1)=Δ V
liquid crystal 1/ (V
add, 25 DEG C× Δ t
1)=0.004958
∴ β
add 1/ β
liquid crystal 1=6.7006
When ambient temperature changes between 25 DEG C to 50 DEG C, △ t
2=25 DEG C
△ V
liquid crystal 2=V
liquid crystal, 50 DEG C-V
liquid crystal, 25 DEG C=m
liquid crystal/ ρ
liquid crystal, 50 DEG C-446.2=8.606231
∴ β
liquid crystal 2=Δ V
liquid crystal 2/ (V
liquid crystal, 25 DEG C× Δ t
2)=0.000772
∵ Δ V
add 2=Δ V
liquid crystal 2
∴ β
add 2=Δ V
add 2/ (V
add, 25 DEG C× Δ t
2)=0.005188
∴ β
add 2/ β
liquid crystal 2=6.72
Obtain the height h when additive
addwhen=1.0 μm, the coefficient of volumetric expansion of additive and the relational expression of liquid crystal expansion coefficient are: β
add≈ 6.7 β
liquid crystal
In sum, the relational expression of the coefficient of volumetric expansion and liquid crystal expansion coefficient that obtain additive is: 6.7 β
liquid brilliant≤ β
add≤ 13.4 β
liquid crystal
Fig. 4 is the schematic cross-section at general panels Main PS place under normal temperature.The general panels at this place comprises array base palte 1, color membrane substrates 2, liquid crystal 5 between array base palte 1 and color membrane substrates 2 and main column support 18, wherein array base palte 1 comprises the first glass 11 and grid (Gate) line 9 be formed on the first glass 11 and public (CS) line 10 that set gradually, insulation course 12 and the first ITO layer 13, first ITO layer 13 has a breach at main column support 18 place, color membrane substrates 2 comprises the second glass 14 set gradually, cyan coloring layer 15 and the second ITO layer 16, wherein relative with concentric line 10 with gate line 9 in cyan coloring layer 15 position is provided with shading resin bed 17, main column support 18 is located between color membrane substrates 2 and array base palte 1, its top contacts with insulation course 12, bottom contacts with the second ITO layer 16.When ambient temperature uprises, liquid crystal 5 density with temperature in liquid crystal panel sealed plastic box increases and diminishes, and liquid crystal volume becomes large, the thick change of box is large, because Main PS is highly constant, when liquid crystal panel is vertically placed, Action of Gravity Field liquid crystal will be assembled downwards, causes high temperature to hang down and flows, as shown in Figure 5; When ambient temperature step-down, liquid crystal 5 density with temperature in liquid crystal panel sealed plastic box reduces and increases, and liquid crystal volume reduces, and due to the support of Main PS, box is thick substantially unchanged, causes producing low-temperature bubbles 7 in liquid crystal panel viewing area, as shown in Figure 6.
As shown in Figure 7, by being coated with a kind of filling material 19 be made up of thermal expansion material between second ITO layer 16 and main column support 18 of color membrane substrates 2, this filling material can use the mode of coating to be arranged in appointed area, thickness is at 0.5um to 1.0um, the shape of coating is quadrilateral, and the material of making of this filling material can be that coefficient of volumetric expansion is 0.5 × 10
-5to 1.0 × 10
-5multiple material, such as thermoplastic resin materials etc., this filling material does not react with other material in liquid crystal cell used.When ambient temperature raises, this filling material volumetric expansion, the thick change of box is large, and Δ V
add=Δ V
liquid crystal, space is discharged to liquid crystal, hang down stream etc. of and the high temperature that causes on the high side due to amount of liquid crystal in liquid crystal cell can be repaired bad, as shown in Figure 8; When ambient temperature step-down, this filling material volumetric contraction, box is thick to diminish, and Δ V
add=Δ V
liquid crystal, can repair on the low side due to amount of liquid crystal in liquid crystal cell and the low-temperature bubbles of generation etc. are bad, as shown in Figure 9.
Certainly, the filling material 19 be made up of thermal expansion material in the present invention also can be coated between the first ITO layer 13 of array base palte 1 and main column support 18.
In sum, this filling material 19 can solve ambient temperature to change hang down stream etc. of the low-temperature bubbles that causes and high temperature bad and expand the serviceability temperature scope of liquid crystal display.
Claims (5)
1. a liquid crystal indicator, comprise the array base palte and color membrane substrates that are oppositely arranged and the liquid crystal be folded between array base palte and color membrane substrates, between described color membrane substrates and array base palte, be provided with stilt, it is characterized in that: between the ITO layer and stilt of described color membrane substrates or between the ITO layer of array base palte and stilt, be provided with the filling material be made up of thermal expansion material; The coefficient of volumetric expansion β of described filling material
addsatisfy condition: 6.7 β
liquid crystal≤ β
add≤ 13.4 β
liquid crystal, wherein, β
addfor the coefficient of volumetric expansion of filling material, β
liquid crystalfor the coefficient of volumetric expansion of liquid crystal; Described filling material uses the mode of coating to be arranged between the ITO layer of described color membrane substrates and stilt or between the ITO layer of array base palte and stilt, the thickness of described filling material is 0.5um to 1.0um, the shape of described filling material is quadrilateral, and the coefficient of volumetric expansion of described filling material is 0.5 × 10
-5to 1.0 × 10
-5between.
2. liquid crystal indicator according to claim 1, it is characterized in that: when the thickness of filling material is 0.5um, the relational expression of the coefficient of volumetric expansion of filling material and the coefficient of volumetric expansion of liquid crystal is: β
add≈ 13.4 β
liquid crystal, wherein, β
addfor the coefficient of volumetric expansion of filling material, β
liquid crystalfor the coefficient of volumetric expansion of liquid crystal.
3. liquid crystal indicator according to claim 1, it is characterized in that: when the thickness of filling material is 1.0 μm, the relational expression of the coefficient of volumetric expansion of filling material and the coefficient of volumetric expansion of liquid crystal is: β
add≈ 6.7 β
liquid crystal, wherein, β
addfor the coefficient of volumetric expansion of filling material, β
liquid crystalfor the coefficient of volumetric expansion of liquid crystal.
4. liquid crystal indicator according to claim 1, is characterized in that: the thickness of above support is 2um to 3um.
5. liquid crystal indicator according to claim 1, is characterized in that: above support is main column support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259902.8A CN102749760B (en) | 2012-07-25 | 2012-07-25 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259902.8A CN102749760B (en) | 2012-07-25 | 2012-07-25 | Liquid crystal display device |
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|---|---|
| CN102749760A CN102749760A (en) | 2012-10-24 |
| CN102749760B true CN102749760B (en) | 2015-02-04 |
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|---|---|---|---|
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360544B (en) * | 2014-11-14 | 2017-07-14 | 京东方科技集团股份有限公司 | Liquid crystal case assembly and preparation method thereof, liquid crystal display panel and display device |
| CN104570501B (en) * | 2014-12-30 | 2018-01-09 | 深圳市华星光电技术有限公司 | Liquid crystal panel and its manufacture method and liquid crystal display device |
| CN110687724A (en) * | 2019-10-22 | 2020-01-14 | 深圳市华星光电技术有限公司 | Display panel and display device |
| CN111061094B (en) * | 2019-12-25 | 2021-07-06 | Tcl华星光电技术有限公司 | Liquid crystal display device and method for manufacturing the same |
| CN111258126A (en) | 2020-02-21 | 2020-06-09 | Tcl华星光电技术有限公司 | Liquid crystal display panel and preparation method thereof |
| CN114815403B (en) * | 2022-04-06 | 2023-10-13 | Tcl华星光电技术有限公司 | Display panel and preparation method and repair method thereof |
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|---|---|---|---|---|
| JPH04191823A (en) * | 1990-11-27 | 1992-07-10 | Toshiba Corp | Liquid crystal display element |
| JPH1048639A (en) * | 1996-08-05 | 1998-02-20 | Toray Ind Inc | Substrate for liquid crystal display element and color liquid crystal display element including the same |
| KR20050073658A (en) * | 2004-01-09 | 2005-07-18 | 비오이 하이디스 테크놀로지 주식회사 | Liquid crystal display device and method for manufacturing the same |
| CN101900911A (en) * | 2009-06-01 | 2010-12-01 | 北京京东方光电科技有限公司 | Liquid crystal display panel and preparation method thereof |
| CN102298230A (en) * | 2011-08-25 | 2011-12-28 | 南京中电熊猫液晶显示科技有限公司 | Liquid crystal display device |
-
2012
- 2012-07-25 CN CN201210259902.8A patent/CN102749760B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04191823A (en) * | 1990-11-27 | 1992-07-10 | Toshiba Corp | Liquid crystal display element |
| JPH1048639A (en) * | 1996-08-05 | 1998-02-20 | Toray Ind Inc | Substrate for liquid crystal display element and color liquid crystal display element including the same |
| KR20050073658A (en) * | 2004-01-09 | 2005-07-18 | 비오이 하이디스 테크놀로지 주식회사 | Liquid crystal display device and method for manufacturing the same |
| CN101900911A (en) * | 2009-06-01 | 2010-12-01 | 北京京东方光电科技有限公司 | Liquid crystal display panel and preparation method thereof |
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|---|---|
| CN102749760A (en) | 2012-10-24 |
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