CN113253502A - All-angle integrated black display product - Google Patents
All-angle integrated black display product Download PDFInfo
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- CN113253502A CN113253502A CN202110458078.8A CN202110458078A CN113253502A CN 113253502 A CN113253502 A CN 113253502A CN 202110458078 A CN202110458078 A CN 202110458078A CN 113253502 A CN113253502 A CN 113253502A
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- liquid crystal
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- 239000011521 glass Substances 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 9
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 abstract description 17
- 238000002310 reflectometry Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 9
- 238000010030 laminating Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
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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
-
- 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
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
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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)
- Liquid Crystal (AREA)
Abstract
The invention relates to the technical field of cover plate attaching displays, in particular to a full-angle integral black display product. The full-angle integral black display product comprises a cover plate, an upper polaroid, optical cement, a touch sensing film material and liquid crystal color film glass, wherein ink on the surface of the polaroid is printed to form a visible area, the polaroid is attached to the inner surface of the cover plate on the outermost layer, the optical cement and the touch sensing film material are positioned between the polaroid and the liquid crystal color film glass, the optical cement and the touch screen need to consider the non-birefringence or low-birefringence of materials during material selection, under the design, the reflectivities of the ink area and the visible area have angle dependence and have the same dependence degree, so that the whole laminating product has the opportunity to simultaneously realize the delta E (0) in the H direction and the V direction, and the final integral black effect is very helpful.
Description
Technical Field
The invention relates to the technical field of cover plate attaching displays, in particular to a full-angle integral black display product.
Background
With the accelerated development of automobile intelligence, the vehicle-mounted display is developed towards large size, multi-screen, high definition, interactivity and multi-modality, and higher requirements are also placed on the performance of the display, including high contrast, low reflectivity, wide viewing angle, high brightness, touch control, fast response and the like. In addition, the novel design of the details and the structure of the vehicle-mounted display screen can also play an unexpected role in improving the product competitiveness. Therefore, it is a trend to provide a novel, striking, beautiful and scientific "black" technology for vehicle-mounted display.
"one-piece black" is an evaluation of the effect of the cover sheet-bonded product, and means that the boundary between the ink area and the visible area cannot be seen in the entire bonded product without power. The effect can greatly improve the static aesthetic feeling of the display, the surface of the product looks more beautiful, luxurious and scientific, the quality of the displayed product is improved from the appearance, and better experience is brought to consumers; at the moment of rapid development of vehicle-mounted display technology, "integral black" will become one of the trends.
The product is judged to be 'black in one body', and the measurement can be assisted by the chromaticity difference delta E. The value of L represents the lightness and darkness (black and white), the value of a represents the red and green, the value of b represents the yellow and blue, the value of Delta E ═ V ((L1-L2)2+(a1-a2)2+(b1-b2)2). When the delta E is less than 2 and the L value of the visible area is less than 28, the integral black effect is good; when Delta E is less than or equal to 1, a very good integral black effect can be obtained.
The current approaches to solving the solid black problem include two approaches, one is to adjust the reflective chromaticity value of the visible region (VA region) to match the reflective chromaticity value of the existing ink region; another is to adjust the reflected chromaticity values of the ink zones to match the reflected chromaticity values of the existing visible zones.
However, in some cases, the product with the delta E < 2 still can show obvious color difference, or the integral black effect is not good; by analysis, we found that Δ E in these cases is angle-dependent, i.e. Δ E values are different for different angles; further analysis revealed that this angular dependence originated from the polarizer of the liquid crystal module; the polaroid has an absorption axis and a transmission axis, and the reflectivities of the polaroid in the two directions of the absorption axis and the transmission axis are different, so that the attached product also has different reflectivities in the two directions of the absorption axis and the transmission axis; because the L value in the delta E model is positively correlated with the product reflectivity, the L value of the laminated product in the two directions of the absorption axis and the transmission axis is different; in this case, if we match the ink adjustment for one direction, Δ E < 2 is achieved, and Δ E for the other direction may be > 2.
Disclosure of Invention
The present invention is directed to a display product with black color integrated in all directions, so as to solve the problems mentioned in the background art.
In order to achieve the above object, the present invention provides a full-angle integral black display product, which comprises the following components: the touch panel comprises a cover plate, an upper polaroid, optical cement, a touch sensing film material and liquid crystal color film glass;
printing ink on the surface of the upper polaroid to form a visible area;
the upper polaroid is attached to the inner surface of the cover plate on the outermost layer;
the optical adhesive and the touch sensing film are located between the upper polarizer and the liquid crystal color film glass, and the birefringence of the material needs to be considered when the material is selected for the optical adhesive and the touch screen.
As a further improvement of the technical scheme, the number of the optical adhesives is two, and the two optical adhesives are respectively attached to the upper surface and the lower surface of the touch sensing film.
As a further improvement of the technical scheme, the ink printing area on the surface of the upper polaroid is positioned on the periphery of the outer side of the surface of the upper polaroid.
As a further improvement of the technical scheme, a glass substrate is attached to the bottom surface of the liquid crystal color film glass, and the shape of the glass substrate is the same as that of the liquid crystal color film glass, and the volume of the glass substrate is the same.
Compared with the prior art, the invention has the beneficial effects that:
1. in the all-angle integral black display product, ink on the surface of the polaroid is printed to form a visible area, the polaroid is attached to the inner surface of the cover plate on the outermost layer, the optical adhesive and the touch sensing film are positioned between the polaroid and the liquid crystal color film glass, the optical adhesive and the touch screen need to consider no birefringence or low birefringence of materials when materials are selected, under the design, the reflectivities of the ink area and the visible area have angle dependence, and the dependence degrees are the same, so that the integral black display product has the opportunity to realize that delta E is 0 in the H direction and the V direction at the same time, and the integral black display product is very helpful for the final integral black effect.
2. In the all-angle integral black display product, the problem of angle dependence of delta E values of the attached display product is solved through special structural design and material type selection, and the reflectivity of the whole product is reduced while the all-angle integral black effect is realized, so that the high ambient light contrast is realized.
Drawings
FIG. 1 is a schematic view of the entire structure of embodiment 1;
FIG. 2 is a schematic view of a laminate structure of a conventional conformable product of example 1;
FIG. 3 is a schematic view of a laminate of the conformable product of the present invention of example 1;
FIG. 4 is a graph of two different reflectivity patterns typical of the transfer-bonded product of example 1;
FIG. 5 is a schematic view of an ink-printed polarizer and a laminated structure according to example 1;
FIG. 6 is a schematic view of reflected light analysis of a generic laminate structure bonding product of example 1;
fig. 7 is a schematic representation of a reflected light analysis of a bonded product of the invention of example 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1 an all-angle integral black display product
FIG. 2 is a schematic view of a laminated structure of a conventional bonded product, which includes a cover plate, an optical adhesive and a polarizer from outside to inside; FIG. 3 is a schematic view of a laminated product based on an ink printed polarizer, which is also a cover plate, an upper polarizer and an optical adhesive from the outside to the inside; besides different positions of the laminated structures, sizes of the polarizers in the two schemes are different, the size of the upper polarizer used in the invention is larger, and in addition, the upper polarizer provided by the invention is printed with ink so as to form a visible area of the whole attached product after being attached.
In a traditional laminated product, the polarizer has two different directions of an absorption axis and a transmission axis, and the reflectivities R in the two directions are different, so that the reflectivity of the liquid crystal module has angle dependence, and the angle dependence of the reflectivity of the whole laminated product can be further caused after lamination; as shown in fig. 4, for the vehicle-mounted display product, in order to avoid the problem that the display is not visible when the driver wears sunglasses, the absorption axis of the display is in the horizontal direction (defined as H direction) along the long side, and correspondingly, the short side direction perpendicular to the absorption axis is defined as V direction, and the reflectivity of the visible region can define two directions, namely RH and RV.
For ease of understanding, subscripts 1 and 2 are defined herein to correspond to the visible and ink zone parameters, respectively, and in conjunction with the above analysis, conventional conformable products have reflectivities RH and RV in the H and V directions that are different and typically have RH1 < RV 1; on the other hand, for conventional solutions, the ink areas are printed directly on the cover plate, and their reflectivity is not angle-dependent, i.e. RH2 — RV2 for the cover plate ink.
Currently, the model widely used in the art for evaluating color difference (e.g., black-in-one effect) is the CIE1976 uniform chromaticity system with evaluation value Δ E ═ ((L1 × -L2) ^2+ (a1 × -a 2) ^2+ (b1 × -b 2) ^2) ^ 0.5; in particular to applications in the art, L has a positive correlation with the reflectivity of the product surface, so for the final fit product:
the chromaticity parameters of the reflected light of the visible area are as follows: LH1 and LV1, wherein LH1 is less than LV 1;
the chroma parameters of the reflected light of the ink area are as follows: LH2 and LV2, wherein LH2 is LV 2;
therefore, regardless of the values of a and b, it is assumed that LH1 is LH2 by ink formulation design, when Lv1 > Lv 2. The delta E value in the H direction of the entire fit product meets the requirements, but the delta E value in the V direction does not. The angle dependence of the reflectivity caused by the polarizer makes the integral black (Δ E) design of the entire product difficult.
In order to overcome the problem of angle dependence of the delta E value, the invention designs the structure, the position and the matching and selection of other materials around the polarizer, which specifically comprises the following steps:
1. as shown in fig. 5, unlike the conventional cover plate attachment product, the upper polarizer is attached to the inner surface of the outermost cover plate, and the ink printing area on the surface of the polarizer is located on the periphery of the outer side of the surface of the polarizer;
2. as shown in fig. 5, unlike the conventional cover plate attaching product, the present invention prints ink constituting a visible region on an upper polarizer;
3. as shown in fig. 1, different from a conventional cover plate bonded product, in the present invention, two optical adhesives and two touch sensing film materials are located between a polarizer and a liquid crystal color film glass, the two optical adhesives are respectively attached to the upper and lower surfaces of the touch sensing film material, a glass substrate is attached to the bottom surface of the liquid crystal color film glass, the shape of the glass substrate is the same as that of the liquid crystal color film glass, and the volume of the glass substrate is the same, and when the optical adhesives, the touch glass and the touch sensing film materials are selected, the birefringence Δ n of the materials needs to be considered (one reference value is that the corresponding optical path difference Δ d is less than 100nm, where Δ d is d × Δ n, and d is the thickness of the material);
in this design, the reflectance (or L) of both the ink and visible areas will have an angular dependence and the same degree of dependence, so there are now:
the chromaticity parameters of the reflected light of the visible area are as follows: LH1 and LV1, wherein LH1 is less than LV 1;
the chroma parameters of the reflected light of the ink area are as follows: LH2 and LV2, wherein LH2 is less than LV 2;
in this case, the ink on the polarizer may be adjusted to LH 1-LH 2 to simultaneously realize Lv 1-Lv 2. In theory, this has the opportunity to achieve Δ E of 0 in both the H and V directions for the entire laminated product, which is very helpful for the final integral black effect.
In addition, the design can also reduce the reflectivity of the visible area (namely, the ink area) of the whole attached product and improve the ambient light contrast of the product;
FIG. 6 is a schematic view of a reflection analysis of a conventional laminated structure bonded product, wherein A, B, C and D are the light rays reflected by different reflective surfaces respectively; in the reflection analysis of the bonded product of the present invention shown in fig. 7, it is obvious that the reflected lights B, C and D are greatly reduced compared to the conventional structure because of the existence of the upper polarizer (the natural light transmittance is 50%, the reflected lights cause polarization change, and there is a transmittance effect when these reflected lights with changed polarization state pass through the polarizer again).
Finally, the above description is based on the simplest LCM plus optical glue plus cover structure analysis, and actually, the analysis manner and the result are the same for other structures such as GG structure (LCM plus optical glue plus touch glass plus optical glue plus cover plate), GFF (LCM plus optical glue plus touch film plus optical glue plus cover plate), etc., but it should be noted here that the touch film material used in the GFF structure generally uses common PET, and common PET has a certain birefringence due to its stretching process.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A full-angle integral black display product comprises the following parts: the touch panel comprises a cover plate, an upper polaroid, optical cement, a touch sensing film material and liquid crystal color film glass;
printing ink on the surface of the upper polaroid to form a visible area;
the upper polaroid is attached to the inner surface of the cover plate on the outermost layer;
the optical adhesive and the touch sensing film are located between the upper polarizer and the liquid crystal color film glass.
2. The all-angle black-integrated display product according to claim 1, wherein: the touch sensing film comprises a touch sensing film material, and is characterized in that two optical adhesives are arranged and are respectively attached to the upper surface and the lower surface of the touch sensing film material.
3. The all-angle black-integrated display product according to claim 1, wherein: and the ink printing area on the surface of the upper polaroid is positioned on the periphery of the outer side of the surface of the upper polaroid.
4. The all-angle black-integrated display product according to claim 1, wherein: the bottom surface of the liquid crystal color film glass is attached with a glass substrate, and the shape of the glass substrate is the same as that of the liquid crystal color film glass, and the volume of the glass substrate is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458078.8A CN113253502A (en) | 2021-04-27 | 2021-04-27 | All-angle integrated black display product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458078.8A CN113253502A (en) | 2021-04-27 | 2021-04-27 | All-angle integrated black display product |
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| CN113253502A true CN113253502A (en) | 2021-08-13 |
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| CN202110458078.8A Pending CN113253502A (en) | 2021-04-27 | 2021-04-27 | All-angle integrated black display product |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985640A (en) * | 2021-12-15 | 2022-01-28 | 睿合科技有限公司 | Functional multilayer composite rubber material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941132A (en) * | 2017-02-27 | 2017-07-11 | 广东小天才科技有限公司 | OLED display screen and manufacturing method thereof |
| CN207133546U (en) * | 2017-09-22 | 2018-03-23 | 信利光电股份有限公司 | A kind of black protecgulum, black touch-screen and liquid crystal module |
-
2021
- 2021-04-27 CN CN202110458078.8A patent/CN113253502A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941132A (en) * | 2017-02-27 | 2017-07-11 | 广东小天才科技有限公司 | OLED display screen and manufacturing method thereof |
| CN207133546U (en) * | 2017-09-22 | 2018-03-23 | 信利光电股份有限公司 | A kind of black protecgulum, black touch-screen and liquid crystal module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113985640A (en) * | 2021-12-15 | 2022-01-28 | 睿合科技有限公司 | Functional multilayer composite rubber material |
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Application publication date: 20210813 |