CN105158938B - The choosing method of Polarizer Used for Liquid Crystal Display - Google Patents
The choosing method of Polarizer Used for Liquid Crystal Display Download PDFInfo
- Publication number
- CN105158938B CN105158938B CN201510548223.6A CN201510548223A CN105158938B CN 105158938 B CN105158938 B CN 105158938B CN 201510548223 A CN201510548223 A CN 201510548223A CN 105158938 B CN105158938 B CN 105158938B
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- CN
- China
- Prior art keywords
- polaroid
- blackness
- liquid crystal
- crystal display
- light source
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
Classifications
-
- 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
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
Abstract
A kind of choosing method of Polarizer Used for Liquid Crystal Display, it the steps include: that blackness tester LED light source, the first polaroid, benchmark check sheet, the second polaroid are placed on right angle platform by opsition dependent relationship, and keep blackness tester LED light source vertical with benchmark check sheet, the second polaroid respectively；The second polaroid is rotated, blackness is made to reach specified value, draw lines L1 and L2；Whether two both ends to draw lines meet deviation requirement after judging doubling, cut by setting-out to the second polaroid if meeting.The present invention can detect the relative permeability of upper polaroid and down polaroid before attachment, it can guarantee for consistent two polarisations up and down of relative blackness to be mounted on the same liquid crystal display, to make the LCD products blackness color variation range produced in 0.5 color number.
Description
Technical field
The present invention relates to technical field of liquid crystal display, especially a kind of method for choosing Polarizer Used for Liquid Crystal Display.
Background technique
In technical field of liquid crystal display it is common to liquid crystal product have liquid crystal display, liquid crystal light valve etc., wherein liquid crystal
Show that device is one of commonly used electronic product.It is well known that the imaging of liquid crystal display must rely on polaroid, liquid crystal display
Basic structure as shown in Figure 1, comprising top glass substrate 1, COM electrode 2, upper polaroid 3, lower glass substrate 4, SEG electrode 5,
Liquid crystal layer 6 and down polaroid 7, upper polaroid is tightly attached in top glass substrate, and down polaroid is tightly attached in lower glass substrate.When
When two polaroid optical axises are parallel, luminous flux is maximum, as most bright state；When two polaroid optical axises are vertical, luminous flux
Minimum, as most black state；When two polaroid optical axis included angles are between 0-90 degree, luminous flux is also between minimum and maximum
State.If liquid crystal display has lacked any polaroid in process of production, liquid crystal display is all that can not show figure
Picture.
Same liquid crystal light valve also be unable to do without polaroid, and requirement of the liquid crystal light valve than general display device to polaroid is also
Want high；Such as the liquid crystal display used on electric welder's helmet, it is easy to if blackness and visual angle do not reach requirement to operator
Eyes damage.
However, the polarizing axis of each polaroid might not all be one in component used in liquid crystal display product production
It causes, this is resulted in process of production, even if with product using same polaroid and using same angle to polarisation
Piece is cut, but the consistency of the blackness for the liquid crystal display product produced, visual angle and blackness all has difference, nothing
Method meets the quality requirement of product.
Summary of the invention
The object of the present invention is to provide a kind of choosing methods of Polarizer Used for Liquid Crystal Display, it can be in liquid crystal display
Pass through the selection of upper polaroid and down polaroid in production process, guarantee two up and down be mounted on the same liquid crystal display
Polarisation relative blackness is consistent, thus make the LCD products blackness color variation range produced in 0.5 color number, it is full
The quality requirement of sufficient product.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of choosing method of Polarizer Used for Liquid Crystal Display, the method use a right angle platform, benchmark check sheet
And blackness tester, and operate according to the following steps:
A. blackness tester LED light source is opened；
B. the first polaroid is attached to above benchmark check sheet, and benchmark check sheet is placed below blackness tester,
Make the first polaroid perpendicular to LED light source；
C. the second polaroid is placed on right angle platform, and is located at issuing for benchmark check sheet, while making the second polarisation
Piece is vertical with LED light source；
D. the second polaroid is rotated, so that blackness is reached specified value, and draw first line L1；
E. the second polaroid is placed on right angle platform again；
F. the second polaroid is rotated, blackness is made to reach specified value, and draws Article 2 line L2；
G. perpendicular to setting-out the second polaroid of L1 or L2 doubling；
H. judge whether the deviation at two setting-out both ends after doubling is respectively less than 1mm, such as respectively less than 1mm, then carry out step I；
Otherwise return step C；
I. the second polaroid is cut by setting-out, can be obtained and meets two of liquid crystal display blackness requirement partially
Mating plate.
The second polaroid side of rotation described in the choosing method of above-mentioned Polarizer Used for Liquid Crystal Display, step D and step F
Method are as follows: by the LED light source of the upper left hand corner section alignment blackness tester of the second polaroid, hold the lower right corner rotation of the second polaroid
Turn the second polaroid.
Due to using above technical scheme, the invention technological progress is as follows.
The present invention can in production process of liquid crystal displays, to before attachment upper polaroid and down polaroid relatively thoroughly
The rate of mistake is detected, it is ensured that consistent two polarisations up and down of relative blackness is mounted on the same liquid crystal display, from
And make the LCD products blackness color variation range produced in 0.5 color number, meet the quality requirement of product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of liquid crystal display；
Fig. 2 is the position view of each test component of the present invention；
Fig. 3 is flow chart of the invention.
Each label indicates in figure are as follows: 1, top glass substrate, 2, COM electrode, 3, upper polaroid, 4, lower glass substrate, 5, SEG
Electrode, 6, liquid crystal layer, 7, down polaroid, 8, LED light source, 9, benchmark check sheet, the 10, second polaroid, 11, square, 12,
Right angle platform.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be described in further detail.
The choosing method of Polarizer Used for Liquid Crystal Display provided by the invention is by upper and lower on testing liquid crystal display
Lumen fraction minimum, that is, blackness of two polaroids meets same liquid crystal display for maximum value to obtain two blackness colors number
The polaroid of requirement.Test component includes right angle platform 12, benchmark check sheet 9, square 11 and blackness tester, quilt
Test component is the first polaroid and the second polaroid.The flow chart of detection method as shown in figure 3, specifically includes the following steps:
A. blackness tester LED light source 8 is opened.Blackness tester uses ADVANTEST Q8221 in the present invention
OPTICAL MULTI POWER METER。
B. the first polaroid is cut by N degree, the first polaroid cut is attached to above benchmark check sheet, and will
Benchmark check sheet is placed below blackness tester, places the first polaroid perpendicular to LED light source.
C. whole the second polaroid is placed on right angle platform 12, and the benchmark check sheet for posting the first polaroid is put
It is placed between the LED light source of blackness tester and the second polaroid, while keeping the second polaroid vertical with LED light source.
Blackness tester LED light source 8, the first polaroid, benchmark check sheet 9, the second polaroid 10 and right angle platform 12
Positional relationship it is as shown in Figure 2.
D. by the LED light source of the upper left hand corner section alignment blackness tester of the second polaroid, the right side of the second polaroid is held
Inferior horn rotates the second polaroid, and blackness tester is made to measure most black value, then fixes the second polaroid and with square 11 the
First line L1 is drawn on two polaroids, as the first label.The present invention is used cooperatively using right angle platform and square, not only may be used
To guarantee the plane relative level where the second polaroid, it can also be ensured that the square of setting-out is straight Relative vertical
In angular coordinate system, detection accuracy is improved.
E. the second polaroid is placed on right angle platform again.
F. by the LED light source of the upper left hand corner section alignment blackness tester of the second polaroid, the right side of the second polaroid is held
Inferior horn rotates the second polaroid, so that blackness is reached specified value, and draw Article 2 line L2, as the second label.The survey of this test
Pilot is different from the test point position of first time test, to guarantee that straight line L1 and Article 2 line L2 will not be overlapped.
G. perpendicular to setting-out the second polaroid of L1 or L2 doubling.
H. judge whether the deviation at two setting-out both ends after doubling is respectively less than 1mm, such as respectively less than 1mm, then carry out step I；
Otherwise return step C retests setting-out, until the setting-out on two labels meets deviation requirement.
I. the second polaroid is cut by setting-out, can be obtained and meets two of liquid crystal display blackness requirement partially
Mating plate.Then two polaroids are attached on liquid crystal display device, that is, can guarantee the blackness color of liquid crystal display each batch product
Number variation range can meet the quality requirement of European CE certification in 0.5 color number.
Claims (2)
1. the choosing method of Polarizer Used for Liquid Crystal Display, which is characterized in that the method utilizes right angle platform (12), a base
Pre-check piece (9), square (11) and blackness tester, and operate according to the following steps:
A. blackness tester LED light source is opened；
B. the first polaroid is attached to above benchmark check sheet, and benchmark check sheet is placed below blackness tester, make the
One polaroid is perpendicular to LED light source；
C. the second polaroid is placed on right angle platform, and be located at benchmark check sheet lower section, while make the second polaroid with
LED light source is vertical；
D. the second polaroid is rotated, so that blackness is reached specified value, and draw first line L1；
E. the second polaroid is placed on right angle platform again；
F. the second polaroid is rotated, blackness is made to reach specified value, and draws Article 2 line L2；
G. perpendicular to setting-out the second polaroid of L1 or L2 doubling；
H. judge whether the deviation at two setting-out both ends after doubling is respectively less than 1mm, such as respectively less than 1mm, then carry out step I；Otherwise
Return step C；
I. the second polaroid is cut by setting-out, can be obtained two polaroids for meeting liquid crystal display blackness requirement；
Two polaroids are attached on liquid crystal display device, that is, can guarantee the blackness color number variation of liquid crystal display each batch product
Range is in 0.5 color number.
2. the choosing method of Polarizer Used for Liquid Crystal Display according to claim 1, which is characterized in that the step D and
The method of the second polaroid of rotation described in step F are as follows: by the LED of the upper left hand corner section alignment blackness tester of the second polaroid
Light source, the lower right corner for holding the second polaroid rotate the second polaroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510548223.6A CN105158938B (en) | 2015-08-31 | 2015-08-31 | The choosing method of Polarizer Used for Liquid Crystal Display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510548223.6A CN105158938B (en) | 2015-08-31 | 2015-08-31 | The choosing method of Polarizer Used for Liquid Crystal Display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105158938A CN105158938A (en) | 2015-12-16 |
| CN105158938B true CN105158938B (en) | 2019-04-23 |
Family
ID=54799845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510548223.6A Expired - Fee Related CN105158938B (en) | 2015-08-31 | 2015-08-31 | The choosing method of Polarizer Used for Liquid Crystal Display |
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| Country | Link |
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| CN (1) | CN105158938B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969906B (en) * | 2017-04-26 | 2019-05-03 | 武汉华星光电技术有限公司 | A kind of the colorimetry calculation method and chrominance distortion method of display |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003344302A (en) * | 2002-05-31 | 2003-12-03 | Sumitomo Chem Co Ltd | Inspection method and inspection equipment for polarizing film |
| CN101369059A (en) * | 2007-08-13 | 2009-02-18 | 中华映管股份有限公司 | Detection device and detection method |
| CN101566738A (en) * | 2008-04-25 | 2009-10-28 | 上海广电Nec液晶显示器有限公司 | Method for detecting right side and back side of polarizing plate |
| CN101915661A (en) * | 2010-09-03 | 2010-12-15 | 无锡市奥达光电子有限责任公司 | Method and device for detecting optical axis angle of polarization property component |
| CN202024877U (en) * | 2011-03-16 | 2011-11-02 | 中国科学院上海技术物理研究所 | Device used for calibrating transmission axes of polaroid |
| CN102279094A (en) * | 2011-03-16 | 2011-12-14 | 中国科学院上海技术物理研究所 | Apparatus and method for calibrating transmission axis of polaroid |
| CN103697836A (en) * | 2013-12-19 | 2014-04-02 | 合肥京东方光电科技有限公司 | Axial angle measuring device for polaroid |
-
2015
- 2015-08-31 CN CN201510548223.6A patent/CN105158938B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003344302A (en) * | 2002-05-31 | 2003-12-03 | Sumitomo Chem Co Ltd | Inspection method and inspection equipment for polarizing film |
| CN101369059A (en) * | 2007-08-13 | 2009-02-18 | 中华映管股份有限公司 | Detection device and detection method |
| CN101566738A (en) * | 2008-04-25 | 2009-10-28 | 上海广电Nec液晶显示器有限公司 | Method for detecting right side and back side of polarizing plate |
| CN101915661A (en) * | 2010-09-03 | 2010-12-15 | 无锡市奥达光电子有限责任公司 | Method and device for detecting optical axis angle of polarization property component |
| CN202024877U (en) * | 2011-03-16 | 2011-11-02 | 中国科学院上海技术物理研究所 | Device used for calibrating transmission axes of polaroid |
| CN102279094A (en) * | 2011-03-16 | 2011-12-14 | 中国科学院上海技术物理研究所 | Apparatus and method for calibrating transmission axis of polaroid |
| CN103697836A (en) * | 2013-12-19 | 2014-04-02 | 合肥京东方光电科技有限公司 | Axial angle measuring device for polaroid |
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| Publication number | Publication date |
|---|---|
| CN105158938A (en) | 2015-12-16 |
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Granted publication date: 20190423 |