CN219831569U - VA liquid crystal display with high vertical transmittance - Google Patents
VA liquid crystal display with high vertical transmittance Download PDFInfo
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- CN219831569U CN219831569U CN202321174897.0U CN202321174897U CN219831569U CN 219831569 U CN219831569 U CN 219831569U CN 202321174897 U CN202321174897 U CN 202321174897U CN 219831569 U CN219831569 U CN 219831569U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 92
- 238000002834 transmittance Methods 0.000 title claims abstract description 39
- 239000000758 substrate Substances 0.000 claims abstract description 43
- 239000011521 glass Substances 0.000 claims abstract description 42
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 210000002858 crystal cell Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model provides a VA liquid crystal display with high vertical transmittance, which belongs to the technical field of displays, and comprises an upper polaroid, an upper glass substrate, a liquid crystal box, a lower glass substrate and a lower polaroid which are sequentially arranged from top to bottom; the upper glass substrate is provided with upper friction grains, the lower glass substrate is provided with lower friction grains, and a friction angle formed between the upper friction grains and the lower friction grains is 0-20 degrees; the upper polaroid and the lower polaroid are respectively provided with a liquid crystal compensation film, and the sum of optical compensation values of the liquid crystal compensation films on the upper polaroid and the lower polaroid is 600 nm-950 nm. The liquid crystal display can improve the vertical transmittance of the display by optimizing the polaroid, and has good display effect and simple production process.
Description
Technical Field
The utility model relates to the technical field of displays, in particular to a VA liquid crystal display with high vertical transmittance.
Background
VA (vertical alignment) panels, which can be subdivided into two types, MVA (Multi-domain vertical alignment) and PVA (patterned vertical alignment). Is a panel type with more application of the high-end liquid crystal at present, and belongs to a wide-viewing angle panel. The display device belongs to an 8-bit panel, has the advantages of larger visual angle, convenience for multiple people to watch the screen simultaneously, relatively higher contrast ratio, particularly clear text display and multiple applications in medium-high-end commercial liquid crystal displays. Although the VA product has great advantages in contrast and visual angle range, the VA product has the same obvious defects that the VA product has poor steepness and can only be applied to low-way number character products of about 4 ways and cannot be applied to high-way number dot matrix products like an STN mode, so that the application and popularization of the VA product are greatly limited. In the prior art, a plurality of high-pass VA products are produced in quantity in a material collocation mode, a process and procedure optimizing mode and the like. However, these high road number VA products have low vertical transmittance, i.e., vertical surface brightness of the VA products is low. In order to satisfy the surface brightness of VA product in the vertical direction, the backlight brightness of the product needs to be raised to 10000cd/m 2 Left and right. However, this approach can lead to a significant increase in the cost of the backlight, and at the same time, an increase in the brightness of the backlight can increase the reworking of the light sheet, which can further increase the cost of the product.
Therefore, there is an urgent need to find a way to increase the vertical transmittance of the high-pass VA product.
Disclosure of Invention
In order to overcome the problems in the related art, one of the purposes of the utility model is to provide a VA liquid crystal display with high vertical transmittance, which can improve the vertical transmittance of the display by optimizing a polaroid, and has good display effect and simple production process.
A VA liquid crystal display with high vertical transmittance comprises an upper polarizer, an upper glass substrate, a liquid crystal box, a lower glass substrate and a lower polarizer which are sequentially arranged from top to bottom; the upper glass substrate is provided with upper friction grains, the lower glass substrate is provided with lower friction grains, and a friction angle formed between the upper friction grains and the lower friction grains is 0-20 degrees; the upper polaroid and the lower polaroid are respectively provided with a liquid crystal compensation film, and the sum of optical compensation values of the liquid crystal compensation films on the upper polaroid and the lower polaroid is 600 nm-950 nm.
In a preferred embodiment of the present utility model, the thickness of the liquid crystal cell is 5.0 μm to 6.5 μm.
In a preferred technical scheme of the utility model, the optical compensation value of the liquid crystal compensation film on the upper polarizer is 200 nm-450 nm.
In a preferred technical scheme of the utility model, a sealed space is formed between the upper glass substrate and the lower glass substrate through sealant, and the liquid crystal box is arranged in the sealed space; the liquid crystal box comprises a liquid crystal layer and PI (proportional integral) orientation layers arranged in the liquid crystal layer, wherein two PI orientation layers are arranged in the liquid crystal layer and are parallel to each other, and center powder is arranged in the liquid crystal layer.
In a preferred embodiment of the present utility model, the particle size of the center powder is 5.0 μm to 6.5 μm.
In a preferred technical scheme of the utility model, the liquid crystal refractive index delta n of the liquid crystal layer is 0.12-0.16.
In a preferred technical scheme of the utility model, the thickness of the PI orientation layer is 600-900 angstroms.
In the preferred technical scheme of the utility model, the PI orientation layer is provided with ravines polished by fine flannelette, and the depth of the ravines is 0.25-0.35 mm.
In a preferred technical scheme of the utility model, a backlight layer is arranged at the bottom of the lower glass substrate.
The beneficial effects of the utility model are as follows:
the utility model provides a VA liquid crystal display with high vertical transmittance, which comprises an upper polarizer, an upper glass substrate, a liquid crystal box, a lower glass substrate and a lower polarizer which are sequentially arranged from top to bottom; the upper glass substrate is provided with upper friction grains, the lower glass substrate is provided with lower friction grains, and a friction angle formed between the upper friction grains and the lower friction grains is 0-20 degrees. The liquid crystal display can improve the vertical transmittance of the display by optimizing the polaroid, and has good display effect and simple production process.
Drawings
Fig. 1 is a schematic structural diagram of a VA liquid crystal display with high vertical transmittance according to the present utility model.
Reference numerals:
1. a polaroid is arranged on the upper surface of the substrate; 2. a top glass substrate; 3. a lower glass substrate; 4. a lower polarizer; 5. a liquid crystal cell; 51. a PI orientation layer; 52. a liquid crystal layer; 53. center powder; 54. an ITO conductive layer; 55. and (5) sealing glue.
Detailed Description
Preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the utility model. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Examples
Because the vertical transmittance of the existing high-road-number VA product is very low, namely the vertical surface brightness of the VA product is very low. In order to satisfy the surface brightness of VA product in the vertical direction, the backlight brightness of the product needs to be raised to 10000cd/m 2 Left and right. However, this approach can lead to a significant increase in the cost of the backlight, and at the same time, an increase in the brightness of the backlight can increase the reworking of the light sheet, which can further increase the cost of the product. In order to overcome the defects, the utility model provides a VA liquid crystal display with high vertical transmittance.
As shown in fig. 1, the VA liquid crystal display with high vertical transmittance includes an upper polarizer 1, an upper glass substrate 2, a liquid crystal cell 5, a lower glass substrate 3 and a lower polarizer 4 sequentially arranged from top to bottom; the upper glass substrate 2 is provided with upper friction lines, the lower glass substrate 3 is provided with lower friction lines, a friction angle formed between the upper friction lines and the lower friction lines is 0-20 degrees, and the transmittance of the VA product is kept unchanged within the range of the friction angle. More specifically, the bottom of the lower glass substrate 3 is provided with a backlight layer. The backlight layer comprises a backlight light source and a light guide plate, and the backlight light source adopts an LED light source. Since the liquid crystal molecules themselves cannot emit light, the backlight source provides light for the display screen to the liquid crystal cell 5.
The lower glass substrate 3 is parallel to the lower glass substrate 3, and a friction angle formed between the upper friction grain and the lower friction grain is an included angle between the friction grains on the two glass substrates in the horizontal direction.
In a specific embodiment, the upper polarizer 1 and the lower polarizer 4 are respectively provided with a liquid crystal compensation film, and the sum of optical compensation values of the liquid crystal compensation films on the upper polarizer 1 and the lower polarizer 4 is 600 nm-800 nm. Further, the optical compensation value of the liquid crystal compensation film on the upper polarizer 1 is 200 nm-450 nm. The liquid crystal compensation film can compensate the display effect of the LCD at high and low temperatures, namely, the light transmitted through the LCD. The larger the compensation value of the liquid crystal compensation film, the higher the vertical transmittance of the liquid crystal display. The sum of the optical compensation values of the liquid crystal compensation films on the upper polarizer 1 and the lower polarizer 4 is 600 nm-800 nm, so that the higher the vertical transmittance of the liquid crystal display can be obviously improved. In practical applications, the sum of the optical compensation values of the liquid crystal compensation films on the upper polarizer 1 and the lower polarizer 4 is 950nm at most, regardless of the production cost.
The VA liquid crystal display with high vertical transmittance comprises an upper polarizer 1, an upper glass substrate 2, a liquid crystal box 5, a lower glass substrate 3 and a lower polarizer 4 which are sequentially arranged from top to bottom; the upper glass substrate 2 is provided with upper friction grains, the lower glass substrate 3 is provided with lower friction grains, and a friction angle formed between the upper friction grains and the lower friction grains is 0-20 degrees. The liquid crystal display can improve the vertical transmittance of the display by optimizing the polaroid, and has good display effect and simple production process. The optimized polaroid has large compensation value and high vertical transmittance, and is matched with the upper glass substrate 2, the liquid crystal box 5, the lower glass substrate 3 and other parts to form the VA product with high transmittance.
Further, the thickness of the liquid crystal cell 5 is 5.0 μm to 6.5 μm. Further, the particle diameter of the center powder 53 is 5.0 μm to 6.5 μm. The larger the thickness of the box is, the larger the particle size of the central powder 53 is, the higher the vertical transmittance of the liquid crystal display is, but when the thickness of the liquid crystal box 5 is increased, the response speed of the product at normal temperature and low temperature is reduced, and when the response speed is too low, tailing is possibly generated when the product displays different pictures, namely, when the next picture comes out, the last picture is not completely finished, which can affect the normal use of customers. In order to ensure a certain response speed, the thickness of the liquid crystal box 5 cannot be too large, and in order to ensure the vertical transmittance, the thickness of the liquid crystal box 5 cannot be too small, so that the thickness of the liquid crystal box 5 is 5.0-6.5 mu m, and the response speed is ensured while the vertical transmittance is improved.
Further, a sealed space is formed between the upper glass substrate 2 and the lower glass substrate 3 through a sealant 55, and the liquid crystal cell 5 is disposed in the sealed space; the liquid crystal box 5 comprises a liquid crystal layer 52 and PI alignment layers 51 arranged in the liquid crystal layer 52, wherein two PI alignment layers 51 are arranged in the liquid crystal layer 52, the two PI alignment layers 51 are parallel to each other, a central powder 53 is arranged in the liquid crystal layer 52, and the particle size of the central powder 53 is 5.0-6.5 mu m. Specifically, an ITO conductive layer 54 is provided between the liquid crystal layer 52 and each of the upper glass substrate 2 and the lower glass substrate 3.
In one embodiment, the liquid crystal layer 52 has a liquid crystal refractive index Δn of 0.12 to 0.16. When the particle diameter of the center powder 53 of the liquid crystal layer 52 is constant, the transmittance of the VA liquid crystal display increases as the liquid crystal refractive index Δn increases. In a more preferred embodiment, the refractive index of the liquid crystal may be greater than 0.16.
In one embodiment, the PI orientation layer 51 has a thickness of 600 angstroms to 900 angstroms. The PI alignment layer 51 can effectively reduce friction between the metal inner shell and the pressure-sensitive polyester film, and ensure stable reliability of the liquid crystal cell 5.
In one embodiment, the PI orientation layer 51 is provided with ravines polished by fine flannelette, and the depth of the ravines is 0.25mm to 0.35mm. The depth of the grooves, that is, the amount of friction fit, is in a range where the magnitude of the amount of friction fit is positively correlated with the transmittance of the product. However, too high a friction press-in amount lowers the transmittance of the product. The friction press-in amount of the utility model is 0.25 mm-0.35 mm, and the transmittance of the product can be kept at a higher level.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures. The foregoing description of the preferred embodiments of the utility model is merely exemplary in nature and is in no way intended to limit the utility model,
various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. A high vertical transmittance VA liquid crystal display, characterized in that: the liquid crystal display device comprises an upper polaroid, an upper glass substrate, a liquid crystal box, a lower glass substrate and a lower polaroid which are sequentially arranged from top to bottom; the upper glass substrate is provided with upper friction grains, the lower glass substrate is provided with lower friction grains, and a friction angle formed between the upper friction grains and the lower friction grains is 0-20 degrees; the upper polaroid and the lower polaroid are respectively provided with a liquid crystal compensation film, and the sum of optical compensation values of the liquid crystal compensation films on the upper polaroid and the lower polaroid is 600 nm-950 nm.
2. The high vertical transmittance VA liquid crystal display device of claim 1, wherein:
the thickness of the liquid crystal box is 5.0 mu m-6.5 mu m.
3. The high vertical transmittance VA liquid crystal display device of claim 1, wherein:
the optical compensation value of the liquid crystal compensation film on the upper polaroid is 200 nm-450 nm.
4. A VA liquid-crystal display device of high vertical transmittance according to any one of claims 1 to 3, characterized in that:
a sealed space is formed between the upper glass substrate and the lower glass substrate through sealant, and the liquid crystal box is arranged in the sealed space; the liquid crystal box comprises a liquid crystal layer and PI (proportional integral) orientation layers arranged in the liquid crystal layer, wherein two PI orientation layers are arranged in the liquid crystal layer and are parallel to each other, and center powder is arranged in the liquid crystal layer.
5. The high vertical transmittance VA liquid crystal display device of claim 4, wherein:
the particle size of the center powder is 5.0-6.5 mu m.
6. The high vertical transmittance VA liquid crystal display device of claim 4, wherein:
the liquid crystal refractive index delta n of the liquid crystal layer is 0.12-0.16.
7. The high vertical transmittance VA liquid crystal display device of claim 4, wherein:
the thickness of the PI orientation layer is 600-900 angstroms.
8. The high vertical transmittance VA liquid crystal display device of claim 4, wherein:
and the PI orientation layer is provided with ravines polished by fine flannelette, and the depth of the ravines is 0.25-0.35 mm.
9. The high vertical transmittance VA liquid crystal display device of claim 1, wherein:
and a backlight layer is arranged at the bottom of the lower glass substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321174897.0U CN219831569U (en) | 2023-05-16 | 2023-05-16 | VA liquid crystal display with high vertical transmittance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321174897.0U CN219831569U (en) | 2023-05-16 | 2023-05-16 | VA liquid crystal display with high vertical transmittance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219831569U true CN219831569U (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321174897.0U Active CN219831569U (en) | 2023-05-16 | 2023-05-16 | VA liquid crystal display with high vertical transmittance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219831569U (en) |
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2023
- 2023-05-16 CN CN202321174897.0U patent/CN219831569U/en active Active
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