CN100422810C - Liquid-crystal displaying devices - Google Patents
Liquid-crystal displaying devices Download PDFInfo
- Publication number
- CN100422810C CN100422810C CNB031546420A CN03154642A CN100422810C CN 100422810 C CN100422810 C CN 100422810C CN B031546420 A CNB031546420 A CN B031546420A CN 03154642 A CN03154642 A CN 03154642A CN 100422810 C CN100422810 C CN 100422810C
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- liquid crystal
- polarizer
- crystal indicator
- present
- polarizing plate
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Abstract
The present invention relates to a liquid crystal display device which comprises an upper polarizing plate, a lower polarizing plate, a liquid crystal element and a backlight module train. The present invention is characterized in that the upper polarizing plate is not processed in an anti-dazzle mode, and the lower polarizing plate is processed in an anti-dazzle mode. According to the liquid crystal display device of the present invention, since the upper polarizing plate is not processed in an anti-dazzle mode, the problems of brownish and glittering of the liquid crystal display device of which the upper polarizing plate is processed in an anti-dazzle mode in the prior art do not exist, and the present invention has the visual sense which is approximate to cathode-ray tubes (CRL).
Description
Technical field
The relevant a kind of liquid crystal indicator of the present invention, especially relevant a kind of liquid crystal indicator that is similar to the visual sense of cathode ray tube (CRT) that has.
Background technology
Liquid crystal indicator generally is made up of last Polarizer, liquid crystal cell, following Polarizer and module backlight.Better for the visual character that makes liquid crystal indicator, Jap.P. JP-A one 7-287102 is disclosed in the hardened layer that high index is set on the Polarizer and the reflectivity that reduces panel.But the hardened layer of high index can cause that the film color is inhomogeneous.Therefore U.S. Pat 2001/0035929A1 discloses a kind of Polarizer of going up and is provided with the anti-reflection film with anti-dizzy character, and it can utilize the theoretical reflectivity that reduces of optical interference, causes image to disturb to avoid external image to be presented on the liquid crystal display screen.Yet,, still have shortcoming for example to produce shortcomings such as brownization, passage of scintillation light and contrast (CR, Contrast ratio) reduction though on last Polarizer, resisted dizzy processing to have the advantage that can cover the reaction image and reduce optical reflection.
The inventor promptly carries out broad research based on the shortcoming of available liquid crystal display device, thereby finishes the present invention.
Summary of the invention
The present invention relates to a kind of liquid crystal indicator, comprise Polarizer, a liquid crystal cell and a module backlight up and down, wherein go up Polarizer anti-dizzy processing of Polarizer warp down without anti-dizzy processing.
The present invention relates to a kind of above-mentioned liquid crystal indicator again, wherein should go up Polarizer and have the sclerosis protective seam.
The invention still further relates to a kind of above-mentioned liquid crystal indicator, wherein haze value (Haze value) scope that manifests through the following Polarizer of anti-dizzy processing is between 5 to 50%.
Description of drawings
Fig. 1 shows the formation of liquid crystal indicator of the present invention.
The component symbol simple declaration
1 time Polarizer 11 Bewildering resistance layer
2 liquid crystal cells, 21 chromatic filters
22 liquid-crystal compoundss, 23 thin film transistor (TFT)s
Polarizer on 24 glass substrates 3
31 sclerosis protective seam B/L module backlight
Embodiment
Further specify liquid crystal indicator of the present invention below with reference to graphic.Among Fig. 1, show the formation of liquid crystal indicator of the present invention.Liquid crystal indicator of the present invention comprises a module B/L backlight; Once Polarizer 1, and its below is provided with a Bewildering resistance layer 11; Pull at following polarisation and to be equipped with a liquid crystal cell 2 on 1, this liquid crystal cell is made of glass substrate 24 and chromatic filter 21, and filling liquid crystal compound 22 (LC) also is provided with thin film transistor (TFT) 23 (TFT) in it on this glass plate; On this liquid crystal cell 2, be provided with Polarizer 3 on again, which is provided with a sclerosis protective seam 31.
According to liquid crystal indicator of the present invention, last Polarizer is without anti-dizzy processing, and the visual sensation that prepared liquid crystal indicator is presented be similar to CRT also can solve the brownization of available liquid crystal display device and glimmer problem such as photochemical.But since the liquid crystal indicator skin hardness need reach the specification requirement of 3H and avoid Polarizer in the module back-end process by scratch, therefore on last Polarizer, carry out the hardened layer processing again so that this apparatus surface reaches required specification requirement.
In the liquid crystal indicator of the present invention, last Polarizer can carry out optionally again that anti-reflex treated, anti-soil are handled, anti-refraction is handled etc., only otherwise influencing the character that the present invention desires to reach gets final product.
In the liquid crystal indicator of the present invention, because last Polarizer without anti-dizzy processing, for example produces Newton ring if following Polarizer also then easily produces optical defect without anti-dizzy processing on the backlight liquid crystal panel.In order to eliminate these optical defects, following Polarizer need resist dizzy processing, and preferably, this processing will obtain 5 to 50% haze value, more preferably 20 to 40% haze value.The alleged haze value of this paper is defined as the ratio of diffusion transmitance to full transmitance, can represent by following formula:
Mist degree=(diffusion transmitance)/(full impregnated rate) * 100 (%)
The measurement of haze value can use the haze meter model NDH-2000 of for example NEC's manufacturing to be measured, but the invention is not restricted to these measuring methods.
In the liquid crystal indicator of the present invention, following Polarizer carried out anti-dizzyly is treated to well known in the artly, for example was disclosed in JP-A-7-333404 and the described method of US 2001/0035929 A1 resists dizzy processing.But the present invention is not limited to these methods, all can be used for the present invention as long as can reach any anti-dizzy method of the alleged haze value of the present invention.
In the liquid crystal indicator of the present invention, used liquid crystal cell is known liquid crystal cell, comprising chromatic filter, liquid crystal, thin film transistor (TFT) (TFT) device etc., these elements can use knows that this area habitually practises, used liquid crystal kind is also unrestricted, can be any liquid crystal, for example stable twisted nematic (TN type), vertical orientation type (VA type), transverse electric field effect type (IPS type), optical phase offset-type (OCB type) etc.
In the liquid crystal indicator of the present invention, used upper and lower Polarizer does not also have any restriction, can be thin polarizer, general Polarizer, if need the wide viewing angle function, then can add view film, super view film, A-plate, C one plate and biaxial compensation film etc. again.
In the liquid crystal indicator of the present invention, the absorption axes angle of used upper and lower Polarizer can change in 0 ° to 180 ° scope, but the absorption axes angle that respectively has of Polarizer needs vertical each other up and down.
Through combing dizzy processing and the following Polarizer known liquid crystal indicator without anti-dizzy processing, liquid crystal indicator of the present invention can promote optical characteristics as improving center contrast, maximum-contrast and visual angle, the left and right sides compared to last Polarizer.Its maximum-contrast is promoted to 727.8 (the present invention) by 398 (known liquid crystal indicators), reach the center contrast and be promoted to 311.7 by 265.2, and visual angle, the left and right sides is promoted to 46/45 (left side/right side) by 44.5/43 (left side/right side).
According to above-mentioned explanation, of the present invention as can be known go up Polarizer without anti-dizzy processing and down polarisation pull the liquid crystal indicator that is made up through anti-dizzy processing fluid,matching crystal cell and module backlight and have the optical characteristics of improvement and can solve available liquid crystal display device common brownization and passage of scintillation light problem under display frame.Moreover, represent the visual sense that approaches cathode ray tube (CRT) according to liquid crystal indicator of the present invention, and can further promote the quality of liquid crystal display picture.
The present invention's above-mentioned particular instance of mat is illustrated, and only above-mentioned particular instance is an illustrative only, is not in order to limit the scope of the invention.In view of the above, allly know this skill person, all belong to scope of the present invention in without departing from the spirit or scope of the invention interior various modifications, the improvement of doing.
Claims (5)
1. liquid crystal indicator comprises Polarizer on, once Polarizer, a liquid crystal cell and a module backlight, it is characterized in that, on this Polarizer without anti-dizzy processing and down Polarizer through anti-dizzy processing.
2. liquid crystal indicator as claimed in claim 1 is characterized in that Polarizer has the sclerosis protective seam again on this.
3. liquid crystal indicator as claimed in claim 1 is characterized in that, the haze value that this time Polarizer represents after anti-dizzy processing is in 5 to 50% scope.
4. liquid crystal indicator as claimed in claim 3 is characterized in that, the haze value that this time Polarizer represents after anti-dizzy processing is in 20 to 40% scope.
5. the described liquid crystal indicator of arbitrary as described above claim is characterized in that the absorption axes angle of upper and lower Polarizer can change in 0 ° to 180 ° scope, but the absorption axes angle that respectively has of Polarizer needs vertical each other up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031546420A CN100422810C (en) | 2003-08-21 | 2003-08-21 | Liquid-crystal displaying devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031546420A CN100422810C (en) | 2003-08-21 | 2003-08-21 | Liquid-crystal displaying devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584692A CN1584692A (en) | 2005-02-23 |
| CN100422810C true CN100422810C (en) | 2008-10-01 |
Family
ID=34598003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031546420A Expired - Lifetime CN100422810C (en) | 2003-08-21 | 2003-08-21 | Liquid-crystal displaying devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100422810C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04175727A (en) * | 1990-11-09 | 1992-06-23 | Hitachi Ltd | Liquid crystal display device |
| CN1319778A (en) * | 2000-03-31 | 2001-10-31 | 夏普株式会社 | LCD device |
| US20010035929A1 (en) * | 2000-03-28 | 2001-11-01 | Kazuhiro Nakamura | Anti-glare and anti-reflection film, polarizing plate, and image display device |
| US6559915B1 (en) * | 1999-07-19 | 2003-05-06 | Fuji Photo Film Co., Ltd. | Optical films having matt property, films having a high transmittance, polarizing plates and liquid crystal display devices |
| CN2679711Y (en) * | 2003-08-21 | 2005-02-16 | 广辉电子股份有限公司 | LCD device |
-
2003
- 2003-08-21 CN CNB031546420A patent/CN100422810C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04175727A (en) * | 1990-11-09 | 1992-06-23 | Hitachi Ltd | Liquid crystal display device |
| US6559915B1 (en) * | 1999-07-19 | 2003-05-06 | Fuji Photo Film Co., Ltd. | Optical films having matt property, films having a high transmittance, polarizing plates and liquid crystal display devices |
| US20010035929A1 (en) * | 2000-03-28 | 2001-11-01 | Kazuhiro Nakamura | Anti-glare and anti-reflection film, polarizing plate, and image display device |
| CN1319778A (en) * | 2000-03-31 | 2001-10-31 | 夏普株式会社 | LCD device |
| CN2679711Y (en) * | 2003-08-21 | 2005-02-16 | 广辉电子股份有限公司 | LCD device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1584692A (en) | 2005-02-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YOUDA PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: GUANGHUI ELECTRONIC CO., LTD. Effective date: 20080215 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20080215 Address after: Hsinchu City, Taiwan, China Applicant after: AU OPTRONICS Corp. Address before: Taiwan, China Applicant before: QUANTA DISPLAY INCORPORATION |
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| CX01 | Expiry of patent term |
Granted publication date: 20081001 |