CN100495163C - Liquid crystal display device with optical compensation - Google Patents
Liquid crystal display device with optical compensation Download PDFInfo
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- CN100495163C CN100495163C CNB2004101007536A CN200410100753A CN100495163C CN 100495163 C CN100495163 C CN 100495163C CN B2004101007536 A CNB2004101007536 A CN B2004101007536A CN 200410100753 A CN200410100753 A CN 200410100753A CN 100495163 C CN100495163 C CN 100495163C
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- liquid crystal
- compensating plate
- phase compensating
- substrate
- optical compensation
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Abstract
The invention discloses a LCD of optical compensation, which comprises the following parts: first base plate, second base plate, liquid crystal layer, the first-phase compensating plate, second-phase compensation plate, optical compensation film, first polarizing plate and second polarizing plate, wherein the liquid crystal array pattern of liquid crystal layer displays optical compensation bent pattern; the first-phase compensating plate is set on the exterior of the first base plate; the second-phase compensation plate is set on the exterior of second base plate; multilayer non-cylinder liquid crystal is contained in the first-phase compensation plate and second-phase compensation plate, which reduces the dark mesh-light of liquid crystal layer; the optical compensation film adapts the single-axle extension delaying-piece on the exterior of the first-phase compensation plate, which reduces the incidence mesh-light of two pieces of orthogonal polarizing plate. The invention improves the LCD comparison and aspect angle effectively.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator of tool optical compensation, the liquid crystal indicator of particularly a kind of light compensated bend of tool optical compensation (Optical Compensated Bend) pattern.
Background technology
LCD is through in recent years fast development, its every performance index have all had significant raising, therefore replaced the cathode-ray tube display that is applied to computing machine gradually, and further striden into the application of LCD TV, because the increase in demand of video display, therefore LCD must possess better reaction velocity to avoid that ghost takes place when the video display, and, because conventional liquid crystal differs greatly in the being seen image quality of different angles, for providing many people to watch simultaneously, LCD also must adopt the wide viewing angle technology to be looked the picture unanimity to guarantee each user in different angles.
Please refer to Figure 1A, Figure 1A is depicted as a known smooth compensated bend mode LCD, it comprises one first substrate 14, one second substrate 16, one liquid crystal layer 15, one first Polarizer 10 and one second Polarizer 18, wherein this second substrate 16 be arranged in parallel with this first substrate 14, this liquid crystal layer 15 is arranged between this first substrate 14 and this second substrate 16, and the liquid crystal arrangement pattern of this liquid crystal layer 15 is a light compensated bend pattern, this first Polarizer 10 is arranged at this first substrate, 14 outsides, this second Polarizer 18 is arranged at this second substrate, 16 outsides, the absorption axes quadrature of the absorption axes of this first Polarizer 10 and this second Polarizer 18, above-mentioned smooth compensated bend mode LCD has the rapid-action characteristic, therefore the utmost point is suitable for video display, and because its self-compensating characteristic, in the phenomenon of the also unlikely generation gray-scale inversion of different visual angles.
Please refer to Figure 1B, Figure 1B is depicted as the full visual angle figure of known smooth compensated bend mode LCD, the line of correlation 19 expression contrasts that wait among the figure are the field of view of 10:1, though above-mentioned smooth compensated bend mode LCD has the rapid-action characteristic, yet the only about 30:1 to 40:1 of its center contrast, probe into its reason, when being urged to dark attitude voltage when this light compensated bend mode LCD, owing to the optical anisotropy (Optical Anisotropy) of liquid crystal molecule produces dark attitude light leak, in addition, these two cross-polarized light plates also can produce the phenomenon of oblique light leak, so that reduce it to visual angle when.
As mentioned above, the dark attitude light leak of liquid crystal layer and the oblique light leak of two cross-polarized light plates all can reduce a smooth compensated bend mode LCD to visual angle when, therefore above-mentioned light leakage phenomena must be overcome.
In view of this, if can propose a kind of scheme that reduces dark attitude light leak and oblique light leak, must effectively solve aforesaid defective.
Summary of the invention
Fundamental purpose of the present invention is to utilize the mode of optical compensation to reduce the light leakage phenomena of a smooth compensated bend mode LCD, this light leakage phenomena comprises the dark attitude light leak of liquid crystal layer and the oblique light leak of two cross-polarized light plates, so as to improve this light compensated bend mode LCD to visual angle when.
For achieving the above object, the invention provides a kind of liquid crystal indicator of tool optical compensation, this liquid crystal indicator adopts light compensated bend pattern, and it comprises: one first substrate; One second substrate be arranged in parallel with this first substrate; One liquid crystal layer is arranged between this first substrate and this second substrate, and the liquid crystal arrangement pattern of this liquid crystal layer is a light compensated bend pattern; One first phase compensating plate directly is arranged at this first substrate lateral surface, and this first phase compensating plate has multilayer liquid crystal; One second phase compensating plate directly is arranged at this second substrate lateral surface, and this second phase compensating plate has multilayer liquid crystal; One uniaxial extension retardation plate, directly be arranged at this first phase compensating plate outside, wherein the retardation axis of this uniaxial extension retardation plate with this first mutually the angle of the absorption axes of compensating plate be 90 to spend, and optical phase put-off numerical value circle of this uniaxial extension retardation plate is between 100 nanometer to 150 nanometers; One first Polarizer directly is arranged at this optical compensation films lateral surface; And one second Polarizer, directly be arranged at this second phase compensating plate lateral surface, wherein the angle of the absorption axes of the absorption axes of this first Polarizer and this second Polarizer is 90 degree.
According to above-mentioned conception, wherein optical phase put-off numerical value circle of this liquid crystal layer is between 400 nanometer to 800 nanometers.
According to above-mentioned conception, wherein tilt angle circle of this liquid crystal layer is between 6 degree are spent to 10.
According to above-mentioned conception, the liquid crystal of the wherein said first phase compensating plate is non-column liquid crystal.
According to above-mentioned conception, the multilayer liquid crystal of the wherein said first phase compensating plate is spent between 40 degree in 30 in the circle, liquid crystal inclination angle near this first substrate-side.
According to above-mentioned conception, the multilayer liquid crystal of the wherein said first phase compensating plate is spent between 5 degree in 0 in the circle, liquid crystal inclination angle away from this first substrate-side.
According to above-mentioned conception, wherein optical phase put-off numerical value circle of this its thickness direction of first phase compensating plate is between 120 nanometer to 200 nanometers.
According to above-mentioned conception, wherein this second phase compensating plate has multilayer liquid crystal.
According to above-mentioned conception, the liquid crystal of the wherein said second phase compensating plate is non-column liquid crystal.
According to above-mentioned conception, the multilayer liquid crystal of the wherein said second phase compensating plate is spent between 40 degree in 30 in the circle, liquid crystal inclination angle near this second substrate-side.
According to above-mentioned conception, the multilayer liquid crystal of the wherein said second phase compensating plate is spent between 5 degree in 0 in the circle, liquid crystal inclination angle away from this second substrate-side.
According to above-mentioned conception, wherein optical phase put-off numerical value circle of this its thickness direction of second phase compensating plate is between 120 nanometer to 200 nanometers.
According to above-mentioned conception, wherein this optical compensation films is the uniaxial extension retardation plate.
According to above-mentioned conception, wherein the retardation axis of this uniaxial extension retardation plate with this first mutually the angle of the absorption axes of compensating plate be 90 the degree.
According to above-mentioned conception, wherein optical phase put-off numerical value circle of this uniaxial extension retardation plate is between 100 nanometer to 150 nanometers.
According to above-mentioned conception, wherein the angle of the absorption axes of the absorption axes of this first Polarizer and this second Polarizer is 90 degree.
The light compensated bend mode LCD of tool optical compensation of the present invention, it comprises one first substrate, one second substrate, one liquid crystal layer, one first phase compensating plate, one second phase compensating plate, one optical compensation films, one first Polarizer and one second Polarizer, the absorption axes quadrature of the absorption axes of this first Polarizer and this second Polarizer, it utilizes this first phase compensating plate and this second phase compensating plate to reduce the dark attitude light leak of this liquid crystal layer, and utilize this optical compensation films to reduce the oblique light leak of these two cross-polarized light plates, to improve this contrast of LCD and visual angle.
The liquid crystal indicator of tool optical compensation of the present invention, this liquid crystal indicator adopts light compensated bend pattern, therefore has the rapid-action advantage, therefore and utilize two phase compensating plates and an optical compensation films to reduce the dark attitude light leak of this liquid crystal indicator liquid crystal layer and the oblique light leak of two cross-polarized light plates, have high the advantage of wide viewing angle when.
Description of drawings
Figure 1A is known smooth compensated bend mode LCD.
Figure 1B is the full visual angle figure of known smooth compensated bend mode LCD.
Fig. 2 A puts for the light compensated bend mode liquid crystal demonstration that the present invention has the phase compensating plate.
Fig. 2 B has the phase compensation principle synoptic diagram of the light compensated bend mode LCD of phase compensating plate for the present invention.
Fig. 2 C has the full visual angle figure of the light compensated bend mode LCD of phase compensating plate for the present invention.
Fig. 3 A has the light compensated bend mode LCD of phase compensating plate and optical compensation films for the present invention.
Fig. 3 B is the full visual angle figure of preferred embodiment of the present invention.
Wherein, description of reference numerals is as follows:
10 first Polarizers, 14 first substrates
15 liquid crystal layers, 16 second substrates
18 second Polarizers, 19 line of correlation such as grade
20 first Polarizers, 23 first phase compensating plates
The discoid liquid crystal layer of the discoid liquid crystal layer 23b of 23a
Discoid liquid crystal layer 24 first substrates of 23c
25 liquid crystal layer 25a column liquid crystal layers
25b column liquid crystal layer 25c column liquid crystal layer
26 second substrates, 27 second phase compensating plates
28 second Polarizers, 29 line of correlation such as grade
30 first Polarizers, 31 optical compensation films
33 first phase compensating plates, 34 first substrates
35 liquid crystal layers, 36 second substrates
37 second phase compensating plates, 38 second Polarizers
39 line of correlation such as grade
Embodiment
Please refer to Fig. 2 A, Fig. 2 A is depicted as the light compensated bend mode LCD that the present invention has the phase compensating plate, it comprises one first substrate 24, one second substrate 26, one liquid crystal layer 25, one first phase compensating plate 23, one second phase compensating plate 27, one first Polarizer 20 and one second Polarizer 28, wherein this second substrate 26 be arranged in parallel with this first substrate 24, this liquid crystal layer 25 is arranged at 26 of this first substrate 24 and this second substrates, the liquid crystal arrangement pattern of this liquid crystal layer 25 is a light compensated bend pattern, this first phase compensating plate 23 is arranged at this first substrate, 24 outsides, this second phase compensating plate 27 is arranged at this second substrate, 26 outsides, this first phase compensating plate 23 and this second phase compensating plate 27 include the non-column liquid crystal of multilayer (Discotic Liquid Crystal), this non-column liquid crystal is in the form of annular discs, in order to reduce the dark attitude light leak of this liquid crystal layer 25, and then improve this contrast of LCD and visual angle, this first Polarizer 20 is arranged at the first phase compensating plate, 23 outsides, this second Polarizer 28 is arranged at this second phase compensating plate, 27 outsides, the absorption axes quadrature of the absorption axes of this first Polarizer 20 and this second Polarizer 28.
Please refer to Fig. 2 B, Fig. 2 B is depicted as the phase compensation principle synoptic diagram that the present invention has the light compensated bend mode LCD of phase compensating plate, the liquid crystal arrangement pattern of this liquid crystal layer 25 is a light compensated bend pattern, the liquid crystal arrangement of this light compensated bend pattern presents a symmetrical arrangement mode, in this synoptic diagram, one half side column liquid crystal layer of this liquid crystal layer 25 comprises the 25a layer, 25b layer and 25c layer, this first phase compensating plate 23 includes multi-layer discs shape liquid crystal, in this synoptic diagram, it comprises the 23a layer away from this first substrate 24, be positioned at the 23b layer of central authorities and near the 23c layer of this first substrate 24, its inclination angle (TiltAngle) is increased gradually by 23a layer to 23c layer, make this 23a layer compensate the phase differential that this 25a layer produces, this 23b layer compensates the phase differential that this 25b layer produces, this 23c layer compensates the phase differential that this 25c layer produces, so as to reducing the dark attitude light leak of this liquid crystal layer 25, identical, these liquid crystal layer 25 another half side phase differential that produce can be compensated by this second phase compensating plate 27, please refer to Fig. 2 C, Fig. 2 C is depicted as the full visual angle figure of the light compensated bend mode LCD with phase compensating plate, the line of correlation 29 expression contrasts that wait among the figure are the field of view of 10:1, compared to Figure 1B, it obviously improves visual angle when.
Please refer to Fig. 3 A, Fig. 3 A is depicted as the light compensated bend mode LCD that the present invention has phase compensating plate and optical compensation films, it comprises one first substrate 34, one second substrate 36, one liquid crystal layer 35, one first phase compensating plate 33, one second phase compensating plate 37, one optical compensation films 31, one first Polarizer 30 and one second Polarizer 38, wherein this second substrate 36 be arranged in parallel with this first substrate 34, this liquid crystal layer 35 is arranged at 36 of this first substrate 34 and second substrates, the liquid crystal arrangement pattern of this liquid crystal layer 35 is a light compensated bend pattern, this first phase compensating plate 33 is arranged at this first substrate, 34 outsides, this second phase compensating plate 37 is arranged at this second substrate, 36 outsides, this first phase compensating plate 33 and this second phase compensating plate 37 include the non-column liquid crystal of multilayer, this non-column liquid crystal is in the form of annular discs, in order to reduce the dark attitude light leak of this liquid crystal layer 35, and then improve this contrast of LCD and visual angle, this optical compensation films 31 is arranged at this first phase compensating plate, 33 outsides, this first Polarizer 30 is arranged at this these optical compensation films 31 outsides, this second Polarizer 38 is arranged at this second phase compensating plate, 37 outsides, the absorption axes quadrature of the absorption axes of this first Polarizer 30 and this second Polarizer 38, this optical compensation films 31 can adopt uniaxial extension retardation plate (A-Plate), and its retardation axis with this first mutually the angle of the absorption axes of compensating plate 33 be 90 degree, with the oblique light leak of two Polarizers that reduce above-mentioned quadrature.
A preferred embodiment of the present invention, its cel-gap (Cell Gap) is 4.5 microns (μ m), the optical phase put-off of this liquid crystal layer 35 (Retardation) numerical value is 625 nanometers (nm), its preferred values circle is between 400 nanometer to 800 nanometers, the tilt angle of this liquid crystal layer 35 (Pretilt angle) is 8 degree, its preferred values circle is between 6 degree are spent to 10, this first phase compensating plate 33 is 0 degree away from the discoid liquid crystal inclination angle of this first substrate 35, its preferred values circle is between 0 degree is spent to 5, this first phase compensating plate 33 is 35 degree near the discoid liquid crystal inclination angle of this first substrate 35, its preferred values circle is between 30 degree are spent to 40, this second phase compensating plate 37 is 0 degree away from the discoid liquid crystal inclination angle of this second substrate 36, its preferred values circle is between 0 degree is spent to 5, this second phase compensating plate 37 is 35 degree near the discoid liquid crystal inclination angle of this second substrate 36, its preferred values circle is between 30 degree are spent to 40, the optical phase put-off numerical value (Rth) of this first phase compensating plate 33 and these second phase compensating plate, 37 thickness directions is 160 nanometers, its preferred values circle is between 120 nanometer to 200 nanometers, the optical phase put-off numerical value (Re) of this optical compensation films 31 is 135 nanometers, its preferred values circle is between 100 nanometer to 150 nanometers, please refer to Fig. 3 B, Fig. 3 B is depicted as the full visual angle figure of preferred embodiment of the present invention, the line of correlation 39 expression contrasts that wait among the figure are the field of view of 10:1, compared to Fig. 2 C, it further is improved to visual angle when.
As mentioned above, the present invention reduces the dark attitude light leak and the oblique light leak of a smooth compensated bend mode LCD by two phase compensating plates and an optical compensation films, compared to well known practice, has possessed remarkable efficacy and has promoted.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those of ordinary skill in the art, without departing from the spirit and scope of the present invention; can do some and change and retouching, so protection scope of the present invention defines and is as the criterion when looking claim.
Claims (11)
1. the liquid crystal indicator of a tool optical compensation, this liquid crystal indicator adopt light compensated bend pattern, and it comprises:
One first substrate;
One second substrate be arranged in parallel with this first substrate;
One liquid crystal layer is arranged between this first substrate and this second substrate, and the liquid crystal arrangement pattern of this liquid crystal layer is a light compensated bend pattern;
One first phase compensating plate directly is arranged at this first substrate lateral surface, and this first phase compensating plate has multilayer liquid crystal;
One second phase compensating plate directly is arranged at this second substrate lateral surface, and this second phase compensating plate has multilayer liquid crystal;
One uniaxial extension retardation plate, directly be arranged at this first phase compensating plate outside, wherein the retardation axis of this uniaxial extension retardation plate with this first mutually the angle of the absorption axes of compensating plate be 90 degree, and optical phase put-off numerical value circle of this uniaxial extension retardation plate is between 100 nanometer to 150 nanometers;
One first Polarizer directly is arranged at this uniaxial extension retardation plate lateral surface; And
One second Polarizer directly is arranged at this second phase compensating plate lateral surface, and wherein the angle of the absorption axes of the absorption axes of this first Polarizer and this second Polarizer is 90 degree.
2. the liquid crystal indicator of tool optical compensation as claimed in claim 1, optical phase put-off numerical value circle that it is characterized in that this liquid crystal layer is between 400 nanometer to 800 nanometers.
3. the liquid crystal indicator of tool optical compensation as claimed in claim 1, tilt angle circle that it is characterized in that this liquid crystal layer is between 6 degree are spent to 10.
4. the liquid crystal indicator of tool optical compensation as claimed in claim 1, the liquid crystal that it is characterized in that the described first phase compensating plate are non-column liquid crystal.
5. the liquid crystal indicator of tool optical compensation as claimed in claim 1 is characterized in that the multilayer liquid crystal of the described first phase compensating plate is spent between 40 degree in 30 in the circle, liquid crystal inclination angle near this first substrate-side.
6. the liquid crystal indicator of tool optical compensation as claimed in claim 1 is characterized in that the multilayer liquid crystal of the described first phase compensating plate is spent between 5 degree in 0 in the circle, liquid crystal inclination angle away from this first substrate-side.
7. the liquid crystal indicator of tool optical compensation as claimed in claim 1, optical phase put-off numerical value circle that it is characterized in that this its thickness direction of first phase compensating plate is between 120 nanometer to 200 nanometers.
8. the liquid crystal indicator of tool optical compensation as claimed in claim 1, the liquid crystal that it is characterized in that the described second phase compensating plate are non-column liquid crystal.
9. the liquid crystal indicator of tool optical compensation as claimed in claim 1 is characterized in that the multilayer liquid crystal of the described second phase compensating plate is spent between 40 degree in 30 in the circle, liquid crystal inclination angle near this second substrate-side.
10. the liquid crystal indicator of tool optical compensation as claimed in claim 1 is characterized in that the multilayer liquid crystal of the described second phase compensating plate is spent between 5 degree in 0 in the circle, liquid crystal inclination angle away from this second substrate-side.
11. the liquid crystal indicator of tool optical compensation as claimed in claim 1, optical phase put-off numerical value circle that it is characterized in that this its thickness direction of second phase compensating plate is between 120 nanometer to 200 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101007536A CN100495163C (en) | 2004-12-13 | 2004-12-13 | Liquid crystal display device with optical compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101007536A CN100495163C (en) | 2004-12-13 | 2004-12-13 | Liquid crystal display device with optical compensation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1790135A CN1790135A (en) | 2006-06-21 |
| CN100495163C true CN100495163C (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004101007536A Expired - Fee Related CN100495163C (en) | 2004-12-13 | 2004-12-13 | Liquid crystal display device with optical compensation |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104714330B (en) * | 2015-04-07 | 2018-07-17 | 京东方科技集团股份有限公司 | A kind of curved surface liquid crystal display panel and its manufacturing method |
| CN105652500A (en) | 2016-03-25 | 2016-06-08 | 京东方科技集团股份有限公司 | Curved surface liquid crystal display panel and display device |
| CN105911771B (en) * | 2016-07-07 | 2019-06-14 | 京东方科技集团股份有限公司 | A kind of LCD assembly and liquid crystal display device |
| CN114839815A (en) * | 2021-02-01 | 2022-08-02 | 中强光电股份有限公司 | Display device |
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- 2004-12-13 CN CNB2004101007536A patent/CN100495163C/en not_active Expired - Fee Related
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| CN1790135A (en) | 2006-06-21 |
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