CN108873467A - A kind of full dot matrix VA type monochrome LCD of high number and production method - Google Patents
A kind of full dot matrix VA type monochrome LCD of high number and production method Download PDFInfo
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- CN108873467A CN108873467A CN201710332696.1A CN201710332696A CN108873467A CN 108873467 A CN108873467 A CN 108873467A CN 201710332696 A CN201710332696 A CN 201710332696A CN 108873467 A CN108873467 A CN 108873467A
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- polaroid
- lcd
- liquid crystal
- dot matrix
- high number
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The invention proposes a kind of full dot matrix VA type monochrome LCD of high number and production methods, including LCD liquid crystal cell, back light unit, the first polaroid, the second polaroid, wherein LCD liquid crystal cell includes upper glass, lower glass；Transmitance by the LCD of the full dot matrix VA type monochrome LCD production method production of high number is 4~5%, maximum-contrast >=200, angular field of view is wide, under the conditions of CR=100, main perspective >=40 degree, different perspectives background color is in blue or bluish violet, product light-proofness is good, background color is more black, yields and common low path number VA type monochrome LCD are very nearly the same, having can production, than the full dot matrix VA type monochrome LCD product effect of the high number that conventional method is made obviously than get well, product is made to verify by failtests, suitable for the full dot matrix VA type monochrome LCD product of high number, it is abnormal bad that other will not be generated.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to LCD liquid crystal displays, and in particular to a kind of high full point of number
Battle array VA type monochrome LCD and production method.
Background technique
Realize that the VA type monochrome LCD of volume production is limited to low path number (≤1/8Duty substantially in industry) driving product, belong to letter
Single segment encode type is only able to display simple limited information content, for needing to show that the product to contain much information is unable to satisfy, with
Market shows that demand improves to VA type monochrome LCD, for some high-end vehicle-carrying display screens, high-end instrument and meter and high-end household appliances
Type product, customer requirement customization or the full dot matrix (≤16Duty of high number of standard is provided) VA type monochrome LCD product to be to meet city
Field demand.
The structure chart and effect of low path number VA type monochrome LCD is as shown in Figure 1, 2.
Low path number VA type monochrome LCD routine production method in industry at present, including：
Step 1, preceding process is controlled by normal VA class Product Process, and friction breadth is controlled by 10~11mm, and friction is primary；
Step 2, glass surface respectively attaches a polaroid, offset 125/130nm, LCD above and below LCD liquid crystal cell
The liquid-crystal refractive-index and box of liquid crystal cell are thick, and optical path difference △ n*d value range is 300nm~360nm；
Step 3, the face LCD bottom glass respectively attaches the polaroid that an offset is 125/130nm；
Step 4, cooperation brightness is 800~1500cd/m2Highlighting backlight；
If this conventional design production method set is used in the full dot matrix of high number (>=16Duty) VA type monochrome LCD product
On have following drawback：
1, product transmitance it is low≤2%；
2, product maximum-contrast CR≤100；
3, angular field of view is narrow (under the conditions of CR=100, main perspective≤10 degree)；
4, different perspectives light leakage, background color are thoroughly not black enough.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of full dot matrix VA type monochrome LCD of high number and production side
Method, it is intended that a kind of full dot matrix VA type monochrome LCD production method of high number is provided, in this way, it is complete to improve high number
Dot matrix VA type monochrome LCD product transmitance, contrast and visual angle improve light leakage and the not black problem of background color, meet the full point of high number
Battle array VA type monochrome LCD product requirement and can production.
The present invention provides a kind of full dot matrix VA type monochrome LCD of high number, including LCD liquid crystal cell, back light unit, the first polarisation
Piece, the second polaroid, wherein LCD liquid crystal cell includes upper glass, lower glass；
First polarizer sheet sticking is in the upper surface of described upper glass, and second polarizer sheet sticking is in the LCD liquid crystal
Below the lower glass of box, the back light unit is located at below second polaroid；
The optical path difference △ n*d value of the LCD liquid crystal cell is 550nm~600nm, wherein △ n is liquid-crystal refractive-index, and d is
LCD liquid crystal cell box is thick；
The back light unit is TFT backlight.
As further improvement of the invention, brightness >=4000cd/m of the TFT backlight2。
Improved as of the invention further, first polaroid is compensation polaroid, second polaroid it is inclined
Luminosity >=99.9%.
As further improvement of the invention, degree of polarization >=99.9% of first polaroid, second polaroid
To compensate polaroid.
As further improvement of the invention, it is the inclined of 440nm compensation film that the compensation polaroid, which is with phase difference value,
Mating plate.
The present invention also provides the production methods of high full dot matrix VA type monochrome LCD of number a kind of, including,
Step 1, LCD liquid crystal cell is made, in manufacturing process, the friction process technology controlling and process breadth that rubs is 7~8mm, friction
Number is 1-2 times；
Step 2, the LCD liquid crystal cell made for step 1, according to the optical path difference △ n*d value range of LCD liquid crystal cell
550nm~600nm prepares liquid crystal, wherein △ n is liquid-crystal refractive-index, and d is that LCD liquid crystal cell box is thick；
Step 3, liquid crystal injects LCD liquid crystal cell；
Step 4, conventional appearance and functional test；
Step 5, patch process, the upper surface of upper glass of LCD liquid crystal cell attach the first polaroid, the lower glass of LCD liquid crystal cell
The second polaroid is attached below glass；
Step 6, it completes LCM and binds IC and FPC process；
Step 7, back light unit is installed to below second polaroid, completes the assembling of LCD；
Step 8, entire production and equipment are completed.
As further improvement of the invention, the back light unit uses TFT backlight, the brightness of the TFT backlight
≥4000cd/m2。
Improved as of the invention further, first polaroid is compensation polaroid, second polaroid it is inclined
Luminosity >=99.9%.
As further improvement of the invention, degree of polarization >=99.9% of first polaroid, second polaroid
To compensate polaroid.
As further improvement of the invention, it is the inclined of 440nm compensation film that the compensation polaroid, which is with phase difference value,
Mating plate.
The present invention has the advantages that：Pass through the LCD's of high number full dot matrix VA type monochrome LCD production method production
Transmitance is 4~5%, and maximum-contrast >=200, angular field of view is wide, under the conditions of CR=100, main perspective >=40 degree, and difference view
Angle background color is in blue or bluish violet, and product light-proofness is good, and background color is more black, and yields and common low path number VA type monochrome LCD differ nothing
Several, having can production.
Detailed description of the invention
Fig. 1 is traditional low path number VA type monochrome LCD structure schematic diagram in background technique.
Fig. 2 is the effect picture of existing low path number VA type monochrome LCD in background technique.
Fig. 3 is the full dot matrix VA type monochrome LCD structure schematic diagram of high number in first embodiment of the invention.
Fig. 4 is the full dot matrix VA type monochrome LCD effect picture of high number in first embodiment of the invention.
In figure, 1, upper polaroid；2, upper glass；3, lower glass；4, down polaroid；5, back light unit.
Specific embodiment
With reference to the accompanying drawing, and specific truth example is described in further detail the present invention.
Embodiment 1, as shown in Figure 3,4, the high full dot matrix VA type monochrome LCD of number, including LCD liquid crystal cell, back light unit 5,
First polaroid 1, the second polaroid 4, wherein LCD liquid crystal cell includes upper glass 2, lower glass 3；
First polarizer sheet sticking in the upper surface of upper glass, the second polarizer sheet sticking below the lower glass of LCD liquid crystal cell,
Back light unit is located at below the second polaroid；
The optical path difference △ n*d value of LCD liquid crystal cell is 550nm~600nm, wherein △ n is liquid-crystal refractive-index, and d is LCD liquid
Brilliant box box is thick,
△ n=ne-no
Wherein, ne is extraordinary ray refractive index, and no is ordinary refraction index；
LCD liquid crystal cell box thickness is the gap formed between two sheet glass of liquid crystal cell.
Optical path difference △ n*d is also referred to as retardation, in different display types, play the role of it is very important, according to not
It arranges in pairs or groups technique in different polaroid and box with design value.
Back light unit is TFT backlight, brightness >=4000cd/m of TFT backlight2。
First polaroid 1 is compensation polaroid, degree of polarization >=99.9% of the second polaroid 4 or the first polaroid 1
Degree of polarization >=99.9%, the second polaroid 4 is compensation polaroid；
Compensating polaroid is a kind of polaroid for being exclusively used in the full dot matrix VA type monochrome LCD of high number, is accompanied with phase difference value
Polaroid for the polaroid of 440nm compensation film, this high offset can compensate visual angle, contrast and the background color of LCD, so that
The high full dot matrix VA product of number accomplishes that high contrast, more black background color and broader visual angle are provided simultaneously with high durable reliability and want
It asks, reliability meets：85 DEG C of * 85%RH*500H, 95 DEG C of * 500H, -40 DEG C of * 500H.
The present invention has the advantages that：Product transmitance promoted 2 times or more, product maximum-contrast promoted 2 times with
On, product visual angle increases 20 ° or more, effectively improves the light-proofness and blackness of product, has high reliability.
Embodiment 2, the production method of the high full dot matrix VA type monochrome LCD of number described in first embodiment, including,
Step 1, LCD liquid crystal cell is made, in manufacturing process, the friction process technology controlling and process breadth that rubs is 7~8mm, friction
Number is 1-2 times；
Step 2, the LCD liquid crystal cell made for step 1, according to the optical path difference △ n*d value range of LCD liquid crystal cell
550nm~600nm prepares liquid crystal, wherein △ n is liquid-crystal refractive-index, and d is that LCD liquid crystal cell box is thick；
Step 3, liquid crystal injects LCD liquid crystal cell；
Step 4, conventional appearance and functional test are to belong to the in-plant routine inspection step of LCD, and visual examination is to check
In LCD box with the presence or absence of foreign matter, stain, white point, rainbow, size is exceeded, collapses situations such as angle, functional test is dedicated using LCD
Electric logging device tests LCD electrical property, if has scarce pen section, lacks and draw, short circuit, show the problems such as abnormal；
Step 5, patch process, the upper surface of upper glass of LCD liquid crystal cell attach the first polaroid, the lower glass of LCD liquid crystal cell
The second polaroid is attached below glass；
First polaroid is compensation polaroid, degree of polarization >=99.9% of the second polaroid or the first polaroid it is inclined
Luminosity >=99.9%, the second polaroid is compensation polaroid；
Compensation polaroid is the polaroid for being 440nm compensation film with phase difference value；
Step 6, it completing LCM and binds IC and FPC process, LCM binding IC is the binding procedure of liquid crystal module and control chip,
FPC process is flexible circuit board welding sequence；
Step 7, back light unit 5 is installed to below the second polaroid 4, completes the assembling of LCD, back light unit 5 uses
TFT backlight, brightness >=4000cd/m of TFT backlight2；
Step 8, entire production and equipment are completed.
Due to the interference effect by liquid crystal birefringence, optical activity and natural light, only in eyes face LCD, sight and
Under the complete perpendicular condition of LCD, it appears that background color is black, and actual displayed effect cannot accomplish complete black matrix, different perspectives bottom
Color cannot accomplish complete black, all be to belong in blue or bluish violet, in the present invention △ n*d between 550nm~600nm,
This section of wavelength color is to belong to partially red, and down polaroid fluid,matching crystalline substance molecules align direction LCD on, theory in spectrum colour system figure
Design is black, and natural light is realized polarization by polaroid, plays complete shading, in addition to normal viewing angles, sight face LCD,
In different perspectives, inclination angle goes to see up and down, and by the interference effect of liquid crystal birefringence, optical activity and natural light, background color is presented
Blue or bluish violet.
The present invention has the advantages that：Pass through the LCD's of high number full dot matrix VA type monochrome LCD production method production
Transmitance is 4~5%, and maximum-contrast >=200, angular field of view is wide, under the conditions of CR=100, main perspective >=40 degree, and difference view
Angle background color is in blue or bluish violet, and product light-proofness is good, and background color is more black, and yields and common low path number VA type monochrome LCD differ nothing
It is several, have can production, than the full dot matrix VA type monochrome LCD product effect of the high number that conventional method is made obviously than get well,
It makes product to verify by failtests, is suitable for the full dot matrix VA type monochrome LCD product of high number, other exceptions will not be generated
It is bad；
Those skilled in the art is not under conditions of departing from the spirit and scope of the present invention that claims determine, also
Various modifications can be carried out to the above content.Therefore the scope of the present invention is not limited in above explanation, but by
The range of claims determines.
Claims (10)
1. a kind of full dot matrix VA type monochrome LCD of high number, which is characterized in that partially including LCD liquid crystal cell, back light unit (5), first
Mating plate (1), the second polaroid (4), wherein LCD liquid crystal cell includes upper glass (2), lower glass (3)；
First polaroid (1) is attached at the upper surface of described upper glass (2), and second polaroid (4) is attached at the LCD
Below the lower glass (3) of liquid crystal cell, the back light unit (5) is located at below second polaroid (4)；
The optical path difference △ n*d value of the LCD liquid crystal cell is 550nm~600nm, wherein △ n is liquid-crystal refractive-index, and d is LCD liquid
Brilliant box box is thick；
The back light unit (5) is TFT backlight.
2. the full dot matrix VA type monochrome LCD of high number according to claim 1, which is characterized in that the TFT backlight it is bright
Degree >=4000cd/m2。
3. the full dot matrix VA type monochrome LCD of high number according to claim 1, which is characterized in that first polaroid (1)
To compensate polaroid, degree of polarization >=99.9% of second polaroid (4).
4. the full dot matrix VA type monochrome LCD of high number according to claim 1, which is characterized in that first polaroid (1)
Degree of polarization >=99.9%, second polaroid (4) be compensation polaroid.
5. the full dot matrix VA type monochrome LCD of high number according to claim 3 or 4, which is characterized in that the compensation polaroid
For the polaroid for phase difference value being 440nm compensation film.
6. a kind of full dot matrix VA type monochrome LCD production method of high number, which is characterized in that including,
Step 1, LCD liquid crystal cell is made, in manufacturing process, the friction process technology controlling and process breadth that rubs is 7~8mm, Rubbing number
It is 1-2 times；
Step 2, for step 1 make LCD liquid crystal cell, according to the optical path difference △ n*d value range 550nm of LCD liquid crystal cell~
600nm prepares liquid crystal, wherein △ n is liquid-crystal refractive-index, and d is that LCD liquid crystal cell box is thick；
Step 3, liquid crystal injects LCD liquid crystal cell；
Step 4, conventional appearance and functional test；
Step 5, patch process, the upper surface of upper glass (2) of LCD liquid crystal cell attach the first polaroid (1), under LCD liquid crystal cell
The second polaroid (4) are attached below glass (3)；
Step 6, it completes LCM and binds IC and FPC process；
Step 7, back light unit (5) is installed to below second polaroid (4), completes the assembling of LCD；
Step 8, entire production and equipment are completed.
7. the full dot matrix VA type monochrome LCD production method of high number according to claim 6, which is characterized in that the backlight
Unit (5) uses TFT backlight, brightness >=4000cd/m of the TFT backlight2。
8. the full dot matrix VA type monochrome LCD production method of high number according to claim 6, which is characterized in that described first
Polaroid (1) is compensation polaroid, degree of polarization >=99.9% of second polaroid (4).
9. the full dot matrix VA type monochrome LCD production method of high number according to claim 6, which is characterized in that described first
Degree of polarization >=99.9% of polaroid (1), second polaroid (4) are compensation polaroid.
10. the full dot matrix VA type monochrome LCD of high number according to claim 8 or claim 9, which is characterized in that the compensation polarisation
Piece is the polaroid for being 440nm compensation film with phase difference value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710332696.1A CN108873467A (en) | 2017-05-12 | 2017-05-12 | A kind of full dot matrix VA type monochrome LCD of high number and production method |
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