CN102213863B - Reinforced liquid crystal display module and manufacturing method thereof - Google Patents
Reinforced liquid crystal display module and manufacturing method thereof Download PDFInfo
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- CN102213863B CN102213863B CN2011101739479A CN201110173947A CN102213863B CN 102213863 B CN102213863 B CN 102213863B CN 2011101739479 A CN2011101739479 A CN 2011101739479A CN 201110173947 A CN201110173947 A CN 201110173947A CN 102213863 B CN102213863 B CN 102213863B
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Abstract
The invention discloses a reinforced liquid crystal display module and a manufacturing method thereof. The reinforced liquid crystal display module comprises an upper glass substrate and a lower glass substrate, wherein one side of the upper glass substrate and one side of the lower glass substrate are adhered with each other; an upper polaroid is covered on the other side of the upper glass substrate; the area of the upper polaroid is smaller than that of the upper glass substrate; a lower polaroid is covered on the other side of the lower glass substrate; a filling polaroid is covered at the position which is not covered by the upper polaroid on the upper glass substrate; the upper polaroid and the filling polaroid form a plane which totally covers the upper glass substrate; reinforced glass is adhered to the plane; and the method for manufacturing the reinforced liquid crystal display module comprises four steps. By controlling solidifying operation of optical glue for adhering the reinforced glass, and after the optical glue is solidified, the reinforced liquid crystal display module is processed and a membrane layer of the optical glue is aged, so that the performance of the optical glue is stable and the stress of the optical glue is released simultaneously; and the problem that spots are produced on the corners of the liquid crystal display module can be solved.
Description
Technical field
The present invention relates to field of liquid crystal display, be specifically related to a kind of reinforced liquid crystal display module and preparation method thereof.
Background technology
Reinforced liquid crystal display screen, because self functional reliability is high, all be widely used at indoor and outdoors.Airborne reinforced liquid crystal display module, be widely used in the fields such as Aero-Space, due to its working environment, its serviceability requires general civilian LCD MODULE stricter, therefore needs to carry out performance verification through vibratory test, humid test, mould test and salt-fog test and high low temperature performance test.
Reinforced liquid crystal display screen in order to increase the reliability of LCD MODULE, is used optical cement as a reinforcement type glass of cementing agent bonding above general LCDs.As shown in Figure 1, Figure 2 and Figure 3, this reinforcing glass 1 is generally optics execution glass, at glass surface, is coated with AR antireflective film 11, ito thin film 12 and the optical match layer 13 close with the refractive index of optical cement.In order to improve the anti-seismic performance of liquid crystal display, generally to reinforce glass 1 size and be less than the lower glass substrate of liquid crystal display and be greater than top glass substrate, general thickness is 2.5mm.
Reinforced liquid crystal display module, when the hot operation state, there will be expansion to a certain degree for the optics glue-line of bonding and reinforcement glass, and glue-line can be to four jiaos of extruding, and liquid crystal display will be subject to stronger stress at four corner locations.Because the upper and lower glass substrate of liquid crystal display is to guarantee spacing by the sealed plastic box of surrounding and internal interval, this structure itself has determined that LCDs can not bear larger pressure.Under high temperature (generally being about 50 ℃～70 ℃), the differential expansion stress of glue-line can act on the liquid crystal display edge simultaneously and reinforce the edge of glass; The box that this stress can change the liquid crystal display platen edge to a certain extent is thick, the liquid crystal molecule at this place is squeezed, the twist angle of molecule changes, change has also occurred in the transmitance that sees through the different-waveband visible ray thereupon, the situation of the color exceptions such as spot easily occurs on the LCDs corner location like this, and then affect the performance of reinforced liquid crystal display module.
Summary of the invention
The object of the present invention is to provide a kind of reinforced liquid crystal display module and preparation method thereof, while solving the condition of high temperature, because of the effect of stress of the optical cement of bonding and reinforcement glass, the problem of the color exceptions such as spot easily appears in the LCD MODULE corner location.
To achieve these goals, the technical solution used in the present invention is:
Described reinforced liquid crystal display module, comprise top glass substrate and lower glass substrate that a side bonds mutually, the opposite side of described top glass substrate covers a upper polarizer, the area of described upper polarizer is less than top glass substrate, the opposite side of lower glass substrate covers polaroid, on top glass substrate, upper polarizer covers position in addition and is coated with the filling polaroid, described upper polarizer and filling polaroid formation one cover the plane of described top glass substrate fully, and on described plane, bonding one is reinforced glass.
Adopt and solidify the rear optical cement of durometer level in 40～50gf when described reinforcing glass and described plane bonding.
Shown in optical cement be heat-curable glue or ultraviolet curing glue.
The method for making of described reinforced liquid crystal display module, comprise the following steps;
A: the LCD MODULE consisted of top glass substrate, lower glass substrate, upper polarizer and lower polaroid is carried out to degas operation, use the high-temperature degassing method, LCD MODULE, in Homothermal Proof Box, is stored 4 ± 0.1 hours under 50 ± 2 ℃ of conditions;
B: the liquid crystal display screen drive board of LCD MODULE is attached with diaphragm, use paster technique will fill polaroid and be covered in the position beyond the upper polarizer covering on top glass substrate, upper polarizer and filling polaroid formation one cover the plane of top glass substrate fully, intersection in top glass substrate and the lower glass substrate of LCD MODULE, adopt flexible silicon rubber to be filled;
C: choose front and be coated with the reinforcing glass that AR antireflective film, reverse side are coated with ito thin film and the optical match layer close with the refractive index of optical cement, will reinforce glass with optical cement and bond to upper polarizer and fill on the plane that covers top glass substrate fully that polaroid forms;
D: after optical cement solidifies fully, form the optics glue-line, put into mounting structure by being bonded with the LCD MODULE of reinforcing glass, its optics glue-line is carried out to aging operation, discharge stress, by the mode of screw being installed or applying reinforced glue, reinforced liquid crystal display module is installed again after completing until the optics glue-line is aging.
The silicone adhesive that the optical cement used in described step C is thermohardening type or ultraviolet curing glue, the hardness after solidifying is 40～50gf, working temperature is between-50 ℃～200 ℃; While using heat-curable glue, controls set time is 33 ± 1h, and the control solidification temperature is 30～60 ℃; While using ultraviolet curing glue, controlling curing power is 2～3W, and controlling curing energy is 6～8J.
In described step D, when the optics glue-line of reinforced liquid crystal display module is carried out to aging operation, select the identical aging temperature of high temperature reliability test temperature carried out with the reinforcement type Liquid Crystal Module to carry out, aging temperature and digestion time, meet following formula: T=30, t≤2;
T＝10t+10，2＜t≤2.5；
T＝35，2.5＜t≤4.5；
T＝10t-10，4.5＜t≤5；
T＝40，5＜t≤7；
T＝10t-30，7＜t≤7.5；
T＝45，7.5＜t≤9.5；
T＝10t-50，9.5＜t≤10；
T＝50，10＜t≤12；
T＝10t-70，12＜t≤12.5；
T＝55，12.5＜t≤14.5；
T＝10t-90，14.5＜t＜15；
T＝60，15＜t≤25；
T＝560-20t，25＜t≤25.5；
T＝50，25.5＜t≤27.5；
T＝600-20t，27.5＜t≤28；
T＝40，28＜t≤30；
T＝640-20t，30＜t≤30.5；
T＝30，30.5＜t≤32.5；
Wherein T means aging temperature, and unit is ℃; T means digestion time, and unit is hour.
The invention has the advantages that: described reinforced liquid crystal display module and preparation method thereof, on top glass substrate, upper polarizer covers position in addition and is coated with the filling polaroid, upper polarizer and filling polaroid formation one cover the plane of top glass substrate fully, and a reinforcing glass in the plane bonds; Control the curing operation of optical cement, after optical cement solidifies, then reinforced liquid crystal display module is processed, the optical cement rete is carried out to aging operation, make the stable performance of optical cement, farthest discharge the stress of optical cement simultaneously; Prevented that effect of stress that optical cement produces when high temperature is in the reinforced liquid crystal display module surface, make the thick change amount of whole reinforced liquid crystal display module edge box when hot operation less, the molecule situation of being squeezed is eased, occur on the corner location of LCD MODULE that the situation of the color exceptions such as spot is resolved, and then the even Show Color of LCD MODULE, guarantee the performance of reinforced liquid crystal display module.
The accompanying drawing explanation
The content of below each width accompanying drawing of instructions of the present invention being expressed and the mark in figure are briefly described:
Fig. 1 reinforces the glass front view in prior art;
Fig. 2 reinforces the right view of glass in prior art;
Fig. 3 is A part enlarged drawing in Fig. 2;
Fig. 4 is non-reinforced liquid crystal display module front view;
The right view that Fig. 5 is non-reinforced liquid crystal display module;
The middle B part enlarged drawing that Fig. 6 is Fig. 5;
Fig. 7 is that reinforced liquid crystal display module of the present invention does not cover the front view while reinforcing glass;
Fig. 8 is that reinforced liquid crystal display module of the present invention does not cover the right view while reinforcing glass;
Fig. 9 is C part enlarged drawing in Fig. 8;
The front view that Figure 10 is reinforced liquid crystal display module of the present invention;
The right view that Figure 11 is reinforced liquid crystal display module of the present invention;
Figure 12 is D part enlarged drawing in Figure 11;
The optics glue-line aging curve figure that Figure 13 is reinforced liquid crystal display module of the present invention;
Mark in above-mentioned figure is:
1, reinforce glass, 2, the effective display area territory, 3, fill polaroid, 4, reinforce glassy layer, 5, optics glue-line, 11, the AR antireflective film, 12, ito thin film, 13, the optical match layer, 21, top glass substrate, 22, lower glass substrate, 23, upper polarizer, 24, lower polaroid.
Embodiment
Below contrast accompanying drawing, the description by optimum embodiment, be described in further detail the specific embodiment of the present invention.
As shown in Fig. 4, Fig. 7 and Figure 10, non-reinforced liquid crystal display module, reinforced liquid crystal display module all have effective display area territory 2.
As shown in Fig. 4 to Figure 12, described reinforced liquid crystal display module, comprise top glass substrate 21 and lower glass substrate 22 that a side bonds mutually, the opposite side of top glass substrate 21 covers a upper polarizer 23, the area of upper polarizer 23 is less than top glass substrate 21, the opposite side of lower glass substrate 22 covers polaroid 24, on top glass substrate 21, upper polarizer 23 covers position in addition and is coated with filling polaroid 3, upper polarizer 23 and 3 formation one of filling polaroid cover the plane of top glass substrate 21 fully, and a reinforcing glass in the plane bonds.
As shown in Figure 1 to Figure 3, described reinforcing glass 1 is generally optics execution glass, at glass surface, is coated with AR antireflective film 11, ito thin film 12 and the optical match layer 13 close with the refractive index of optical cement.In order to improve the anti-seismic performance of liquid crystal display, generally to reinforce glass 1 size and be less than the lower glass substrate of liquid crystal display and be greater than top glass substrate, general thickness is 2.5mm.
Form one after the bonding of described reinforcing glass and plane and reinforce glassy layer 4, during bonding, adopt solidify after durometer level at 40～50gfDurometer00, (gf: stiffness units is unit of force, refers to the size of the gravity that the object of 1G quality is suffered; The Durometer00 sclerometer) optical cement in, be generally heat-curable glue, and ultraviolet curing glue also can.Heat-curable glue is by adjusting set time and temperature, and ultraviolet curing glue solidifies power and curing energy by adjustment, makes optical cement can form the film of an even thickness after solidifying, and forms an optics glue-line 5.
Some faces are generally arranged not on same surface level in front due to brilliant display module, intersection as upper polarizer 23 and top glass substrate 21, the intersection of LCD MODULE top glass substrate 21 and lower glass substrate 22 etc., means by reprocessing, be processed into a surface level by the whole front of LCD MODULE; After optical cement is cured, more described LCD MODULE is processed, made the optical cement rete carry out aging, made the stable performance of optical cement, reached the purpose of maximum release stress simultaneously; Also just prevented optical cement stress to the LCD MODULE surface when high temperature, make the thick change amount of whole LCD MODULE edge box when hot operation less, the molecule situation of being squeezed is eased, the situation that occurs the color exceptions such as spot on the LCDs corner location can be resolved, and then even Show Color.
The method for making of described reinforced liquid crystal display module, comprise the following steps;
A: the LCD MODULE consisted of top glass substrate, lower glass substrate, upper polarizer and lower polaroid is carried out to degas operation, use the high-temperature degassing method, LCD MODULE, in Homothermal Proof Box, is stored 4 ± 0.1 hours under 50 ± 2 ℃ of conditions;
B: the liquid crystal display screen drive board of LCD MODULE is attached with diaphragm, use paster technique will fill polaroid and be covered in the position beyond the upper polarizer covering on top glass substrate, upper polarizer and filling polaroid formation one cover the plane of top glass substrate fully, intersection in top glass substrate and the lower glass substrate of LCD MODULE, adopt flexible silicon rubber to be filled;
C: choose front and be coated with the reinforcing glass that AR antireflective film, reverse side are coated with ito thin film and the optical match layer close with the refractive index of optical cement, will reinforce glass with optical cement and bond to upper polarizer and fill on the plane that covers top glass substrate fully that polaroid forms;
D: after optical cement solidifies fully, form the optics glue-line, put into mounting structure by being bonded with the LCD MODULE of reinforcing glass, its optics glue-line is carried out to aging operation, discharge stress, by the mode of screw being installed or applying reinforced glue, reinforced liquid crystal display module is installed again after completing until the optics glue-line is aging.
The optical cement used in described step C, curing transparent and refractive index afterwards approaches the refractive index of liquid crystal display upper polarizer, choose silicone adhesive or the ultraviolet curing glue of thermohardening type, the hardness after solidifying is 40～50gfDurometer 00, and working temperature is between-50 ℃～200 ℃; While using heat-curable glue, controls set time is 33 ± 1h, and the control solidification temperature is 30～60 ℃; While using ultraviolet curing glue, controlling curing power is 2～3W, and controlling curing energy is 6～8J.Make optical cement can form the film of an even thickness after solidifying, guarantee that the optical cement insulating property are good, do not produce unnecessary gas in solidification process, anti-aging, long term exposure, in sunlight, should not produce too large colour cast, and should possess longer mission life.
In described step D, when the optics glue-line of reinforced liquid crystal display module is carried out to aging operation, select to carry out with the identical aging temperature of the required high temperature reliability test temperature of carrying out of reinforcement type Liquid Crystal Module, according to the optical cement aging curve shown in Figure 13, carry out, the expression formula of aging curve is: T=30, t≤2; T=10t+10,2<t≤2.5; T=35,2.5<t≤4.5; T=10t-10,4.5<t≤5; T=40,5<t≤7; T=10t-30,7<t≤7.5; T=45,7.5<t≤9.5; T=10t-50,9.5<t≤10; T=50,10<t≤12; T=10t-70,12<t<12.5; T=55,12.5<t<14.5; T=10t-90,14.5<t<15; T=60,15<t≤25; T=560-20t, 25<t≤25.5; T=50,25.5<t≤27.5;
T=600-20t, 27.5<t≤28; T=40,28<t≤30; T=640-20t, 30<t≤30.5; T=30,30.5<t≤32.5; Wherein T means aging temperature, and unit is ℃, and t means digestion time, and unit is hour.Each temperature nodes in Figure 13, need equitemperature to rise to relevant temperature time side and start timing, the lifting temperature should guarantee more than 15min interval time, guarantees that reinforced liquid crystal display module can be incubated time enough to reach the purpose that discharges stress on each temperature.
After carrying out the aging operation of optics glue-line, optical cement stress to the LCD MODULE surface when high temperature can access release, the reinforced liquid crystal display module change amount that the edge box is thick when hot operation will reduce greatly, the molecule situation of being squeezed is eased, the situation that occurs the color exceptions such as spot on the LCDs corner location can be resolved, and then even Show Color, guarantee the superperformance of reinforced liquid crystal display module.
The above is exemplarily described the present invention; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (6)
1. a reinforced liquid crystal display module, comprise top glass substrate (21) and lower glass substrate (22) that a side bonds mutually, the opposite side of described top glass substrate (21) covers a upper polarizer (23), the area of described upper polarizer (23) is less than top glass substrate (21), the opposite side of lower glass substrate (22) covers polaroid (24), it is characterized in that: the position beyond the upper upper polarizer (23) of top glass substrate (21) covers is coated with fills polaroid (3), described upper polarizer (23) with fill polaroid (3) and form a plane that covers described top glass substrate (21) fully, on described plane, bonding one is reinforced glass.
2. according to the reinforced liquid crystal display module shown in claim 1, it is characterized in that: when described reinforcing glass and described plane bonding, adopt and solidify the rear optical cement of durometer level in 40～50gf.
3. according to the reinforced liquid crystal display module shown in claim 2, it is characterized in that: shown in optical cement be heat-curable glue or ultraviolet curing glue.
4. the method for making of the described reinforced liquid crystal display module of claims 1 to 3 any one, is characterized in that: comprise the following steps;
A: the LCD MODULE consisted of top glass substrate, lower glass substrate, upper polarizer and lower polaroid is carried out to degas operation, use the high-temperature degassing method, LCD MODULE is placed in Homothermal Proof Box, store 4 ± 0.1 hours under 50 ± 2 ℃ of conditions;
B: the liquid crystal display screen drive board of LCD MODULE is attached with diaphragm, use paster technique will fill polaroid and be covered in the position beyond the upper polarizer covering on top glass substrate, upper polarizer and filling polaroid formation one cover the plane of top glass substrate fully, intersection in top glass substrate and the lower glass substrate of LCD MODULE, adopt flexible silicon rubber to be filled;
C: choose front and be coated with the reinforcing glass that AR antireflective film (11), reverse side are coated with ito thin film (12) and the optical match layer close with the refractive index of optical cement, will reinforce glass with optical cement and bond to upper polarizer and fill on the plane that covers top glass substrate fully that polaroid forms;
D: after optical cement solidifies fully, form the optics glue-line, put into mounting structure by being bonded with the LCD MODULE of reinforcing glass, its optics glue-line is carried out to aging operation, discharge stress, by the mode of screw being installed or applying reinforced glue, reinforced liquid crystal display module is installed again after completing until the optics glue-line is aging.
5. according to the method for making of reinforced liquid crystal display module claimed in claim 4, it is characterized in that: the silicone adhesive that the optical cement used in described step C is thermohardening type or ultraviolet curing glue, hardness after solidifying is 40～50gf, and working temperature is between-50 ℃～200 ℃; While using heat-curable glue, controls set time is 33 ± 1h, and the control solidification temperature is 30～60 ℃; While using ultraviolet curing glue, controlling curing power is 2～3W, and controlling curing energy is 6～8J.
6. according to the method for making of reinforced liquid crystal display module claimed in claim 5, it is characterized in that: in described step D, when the optics glue-line of reinforced liquid crystal display module is carried out to aging operation, select the identical aging temperature of high temperature reliability test temperature carried out with the reinforcement type Liquid Crystal Module to carry out, the expression formula of the optics glue-line being carried out to aging aging curve is:
T=30，t≤2；
T=10t﹢10，2＜t≤2.5；
T=35，2.5＜t≤4.5；
T=10t－10，4.5＜t≤5；
T=40，5＜t≤7；
T=10t－30，7＜t≤7.5；
T=45，7.5＜t≤9.5；
T=10t－50，9.5＜t≤10；
T=50，10＜t≤12；
T=10t－70，12＜t≤12.5；
T=55，12.5＜t≤14.5；
T=10t－90，14.5＜t≤15；
T=60，15＜t≤25；
T=560－20t，25＜t≤25.5；
T=50，25.5＜t≤27.5；
T=600－20t，27.5＜t≤28；
T=40，28＜t≤30；
T=640－20t，30＜t≤30.5；
T=30，30.5＜t≤32.5；
Wherein T means aging temperature, and unit is ℃; T means digestion time, and unit is hour.
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| CN104460091B (en) * | 2014-12-22 | 2018-05-25 | 中航华东光电有限公司 | A kind of LCD MODULE and preparation method thereof |
| CN104570441B (en) * | 2014-12-29 | 2018-02-16 | 中航华东光电有限公司 | Liquid crystal display screen assembly and preparation method |
| CN106066550A (en) * | 2016-07-28 | 2016-11-02 | 武汉华星光电技术有限公司 | Liquid crystal display, display panels and preparation method thereof |
| CN109557703A (en) * | 2018-12-27 | 2019-04-02 | 湖南中普显控电子科技有限公司 | A kind of ruggedized construction and reinforcement means of display |
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