CN106338851B - Curved surface liquid crystal display panel and curved surface liquid crystal display - Google Patents
Curved surface liquid crystal display panel and curved surface liquid crystal display Download PDFInfo
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- CN106338851B CN106338851B CN201610933473.6A CN201610933473A CN106338851B CN 106338851 B CN106338851 B CN 106338851B CN 201610933473 A CN201610933473 A CN 201610933473A CN 106338851 B CN106338851 B CN 106338851B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 127
- 238000005452 bending Methods 0.000 claims abstract description 46
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 210000001508 eye Anatomy 0.000 description 3
- 240000004282 Grewia occidentalis Species 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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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
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The invention provides a curved liquid crystal panel and a curved liquid crystal display. The transverse section curve of the curved liquid crystal panel presents non-uniform curvature by adopting a forced displacement curve (C2) or a mode of dividing an arc section (C3) and a tangent line section (L1), so that the traditional uniform arc curvature is replaced, the bending stress generated by the liquid crystal panel due to bending deformation can be reduced, the problem of dark state light leakage at four corners is solved, the optical grade displayed by the curved surface is improved, and the product competitiveness is increased.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a curved liquid crystal panel and a curved liquid crystal display.
Background
Liquid Crystal Displays (LCDs) have many advantages such as thin body, power saving, no radiation, and the like, and are widely used. Such as: liquid crystal televisions, mobile phones, Personal Digital Assistants (PDAs), digital cameras, computer screens, notebook computer screens, or the like.
Generally, a liquid crystal display device includes a housing, a liquid crystal panel disposed in the housing, and a Backlight module (Backlight module) disposed in the housing. The liquid crystal panel has the working principle that liquid crystal molecules are placed in two parallel glass substrates, a plurality of vertical and horizontal fine electric wires are arranged between the two glass substrates, the liquid crystal molecules are controlled to change directions by electrifying or not, and light rays of the backlight module are refracted out to generate pictures.
In recent years, with the development of liquid crystal display technology, curved liquid crystal displays such as curved televisions have been successively introduced by various manufacturers. The curved surface TV set has obvious differentiation in appearance with traditional flat screen television, and its curved surface structure more accords with people's eye eyeball structure, and the picture can not have distortion when actually watching the program, gives people the telepresence and the picture parcel of super high quality and feels, and in addition, curved surface TV set can let user's viewing distance elongate, reaches better viewing experience. Therefore, compared with the common flat liquid crystal display, the curved liquid crystal display has great advantages: 1. differentiation of brands; 2. a wider viewing angle; 3. reducing the distortion of near viewing.
As shown in fig. 1, the liquid crystal panel of the conventional curved-surface tv or other curved-surface liquid crystal display is usually designed into a segment of uniform and continuous arc with radius R, so the curvature of the conventional curved-surface liquid crystal panel is 1/R, i.e. the curvature is uniform, such design has the advantage of keeping the distance between the eyes and the picture uniform, and the disadvantage is that the dark-state four-corner light leakage problem shown in fig. 2 is caused, because the curved-surface liquid crystal panel has bending stress due to bending deformation compared with the planar state, and according to the photoelasticity theory and light leakage mechanism, the larger the bending stress, the larger the light leakage intensity is, and the light leakage is accumulated near the four corners of the panel.
How to solve the problem of light leakage at four corners of the dark state of the curved-surface liquid crystal panel becomes a great research direction for various manufacturers.
Disclosure of Invention
The invention aims to provide a curved liquid crystal panel, which can solve the problem of light leakage at four corners in a dark state, improve the optical grade of curved display and increase the product competitiveness.
Another objective of the present invention is to provide a curved-surface lcd, which has less light leakage at four corners of the dark state of the lcd panel and higher optical quality of curved-surface display.
To achieve the above object, the present invention provides a curved liquid crystal panel, wherein a transverse cross-sectional curve of the curved liquid crystal panel has a variable curvature.
The transverse section curve of the curved liquid crystal panel is a forced displacement curve formed by a three-point forced bending mode.
The radius of each part of the forced displacement curve is smaller than the radius of a uniform circular arc corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel.
The transverse section curve of the curved liquid crystal panel is divided into an arc section and a tangent line section tangent to the arc section from the edge of the panel to the maximum bending arch height.
The radius of the arc section is smaller than that of a uniform arc corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel.
The distance between the tangent point of the arc segment and the tangent line segment and the edge of the panel is more than or equal to L/3, and L is the total length of the curved liquid crystal panel.
The invention also provides a curved liquid crystal display, which comprises a curved liquid crystal panel, wherein the transverse section curve of the curved liquid crystal panel has variable curvature.
The transverse section curve of the curved liquid crystal panel is a forced displacement curve formed by a three-point forced bending mode, and the radius of each part of the forced displacement curve is smaller than that of a uniform circular arc corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel.
The transverse section curve of the curved liquid crystal panel is divided into an arc section and a tangent line section tangent to the arc section from the edge of the panel to the maximum bending arch height, and the radius of the arc section is smaller than that of a uniform arc corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel.
The distance between the tangent point of the arc segment tangent line segment and the edge of the panel is more than or equal to L/3, and L is the total length of the curved liquid crystal panel.
The invention has the beneficial effects that: according to the curved liquid crystal panel and the curved liquid crystal display, the transverse section curve of the curved liquid crystal panel presents non-uniform curvature by adopting a forced displacement curve or a mode of dividing an arc section and a tangent section, so that the traditional uniform arc curvature is replaced, the bending stress generated by the liquid crystal panel due to bending deformation can be reduced, the problem of dark state light leakage at four corners is solved, the optical grade of curved display is improved, and the product competitiveness is increased.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a schematic diagram of a transverse cross-sectional curve of a conventional curved liquid crystal panel;
FIG. 2 is a schematic diagram illustrating a dark-state four-corner light leakage problem of a conventional curved-surface liquid crystal panel;
FIG. 3 is a schematic diagram of a transverse cross-sectional curve of a curved liquid crystal panel according to the present invention;
FIG. 4 is a schematic diagram of a process of forming a forced displacement curve by a three-point forced bending method;
FIG. 5 is a schematic diagram of the dark state display effect of the curved liquid crystal panel according to the present invention when the transverse cross-sectional curve of the curved liquid crystal panel is a forced displacement curve;
fig. 6 is a schematic diagram of the dark-state display effect of the liquid crystal panel corresponding to the division of the arc segment and the segment by the transverse cross-sectional curve of the curved liquid crystal panel.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
The invention firstly provides a curved liquid crystal panel, which is different from the prior art that the liquid crystal panel of a curved television or other curved liquid crystal displays is designed into a circular arc with uniform curvature as shown in fig. 1, and the transverse section curve of the curved liquid crystal panel has variable curvature on the premise of keeping the same maximum bending arch height as the corresponding uniform circular arc with uniform curvature, namely the bending specification of the panel, namely the curvature of the transverse section curve of the curved liquid crystal panel is non-uniform.
Referring to fig. 3, the non-uniformity of the curvature of the transversal cross-section of the curved liquid crystal panel according to the present invention can be achieved by two embodiments (fig. 3 shows the transversal cross-section of the curved liquid crystal panel 1/2 from the panel edge to the maximum curvature camber, and the transversal cross-section of the curved liquid crystal panel 1/2 is symmetrical to the corresponding curve of fig. 3).
The first embodiment: the transverse section curve of the curved liquid crystal panel adopts a forced displacement curve C2 formed by a three-point forced bending mode.
Specifically, as shown in fig. 4, the three-point forced bending method fixes two edges of the curved liquid crystal panel, and applies an external force to the middle portion of the curved liquid crystal panel to forcibly displace the curved liquid crystal panel, so as to obtain a forced displacement curve. As shown in fig. 3, the forced displacement curve C2 is located above the uniform arc C1 corresponding to the maximum curved arch height of the transverse sectional curve of the curved liquid crystal panel, and the radii of the forced displacement curve C2 at each point are smaller than the radius of the uniform arc C1 corresponding to the maximum curved arch height of the transverse sectional curve of the curved liquid crystal panel. The forced displacement curve C2 with non-uniform curvature is adopted to replace the traditional uniform circular arc C1 with uniform curvature, so that the bending stress generated by the bending deformation of the liquid crystal panel can be reduced, the dark state display effect of the liquid crystal panel is shown in figure 5, the problem of light leakage of four corners in a dark state can be solved, the optical grade of curved surface display can be improved, and the product competitiveness can be increased.
The second embodiment: as shown in fig. 3, the transverse cross-sectional curve of the curved liquid crystal panel is divided into an arc segment C3 and a tangent segment L1 tangent to the arc segment C3 from the panel edge to the maximum curved camber, and the radius of the arc segment C3 is smaller than the radius of the uniform arc C1 corresponding to the maximum curved camber of the transverse cross-sectional curve of the curved liquid crystal panel.
Specifically, since the maximum curved arch height is not changed, in order to make the sight line as uniform as possible, the distance between the tangent point of the arc segment C3 and the tangent line segment L1 and the edge of the panel, that is, the distance between the segmentation point and the edge of the panel is not less than L/3, and L is the total length of the curved liquid crystal panel.
The arc segment C3 and the tangent segment L1 are positioned between the uniform arc C1 corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel and the forced displacement curve C2, and the feeling of human eyes on the curved picture cannot be influenced because the arc segment C3 and the tangent segment L1 are in uniform transition. The traditional uniform arc C1 with uniform curvature is replaced by the arc section C3 with non-uniform curvature and the tangent line section L1, so that the bending stress generated by bending deformation of the liquid crystal panel can be reduced, the dark state display effect of the liquid crystal panel is shown in figure 6, the problem of light leakage of four visible corners in a dark state is solved, the optical grade of curved surface display can be improved, and the product competitiveness is increased.
The invention also provides a curved liquid crystal display, which comprises a curved liquid crystal panel and a backlight module. Different from the prior art which adopts circular arcs with uniform curvatures, the transverse section curve of the curved liquid crystal panel has variable curvatures on the premise of keeping the same maximum bending arch height as the corresponding uniform circular arc with uniform curvatures, namely the bending specification of the panel, namely the curvature of the transverse section curve of the curved liquid crystal panel presents non-uniformity; the structure of the backlight module is the same as that of the prior art, but the shape of the backlight module is matched with that of the curved liquid crystal panel.
Referring to fig. 3, the non-uniformity of the curvature of the transversal cross-section of the curved liquid crystal panel of the curved liquid crystal display according to the present invention can be achieved by two embodiments (fig. 3 shows the transversal cross-section of the curved liquid crystal panel of 1/2 from the panel edge to the maximum curvature camber, and the transversal cross-section of the curved liquid crystal panel of 1/2 is symmetrical to the corresponding curve of fig. 3).
The first embodiment: the transverse section curve of the curved liquid crystal panel adopts a forced displacement curve C2 formed by a three-point forced bending mode.
Specifically, as shown in fig. 4, the three-point forced bending method fixes two edges of the curved liquid crystal panel, and applies an external force to the middle portion of the curved liquid crystal panel to forcibly displace the curved liquid crystal panel, so as to obtain a forced displacement curve. As shown in fig. 3, the forced displacement curve C2 is located above the uniform arc C1 corresponding to the maximum curved arch height of the transverse sectional curve of the curved liquid crystal panel, and the radii of the forced displacement curve C2 at each point are smaller than the radius of the uniform arc C1 corresponding to the maximum curved arch height of the transverse sectional curve of the curved liquid crystal panel. The forced displacement curve C2 with non-uniform curvature is adopted to replace the traditional uniform arc C1 with uniform curvature, so that the bending stress generated by the bending deformation of the liquid crystal panel can be reduced, the dark state display effect of the liquid crystal panel is shown in figure 5, and the problem of light leakage of four corners in a dark state can be improved.
The second embodiment: as shown in fig. 3, the transverse cross-sectional curve of the curved liquid crystal panel is divided into an arc segment C3 and a tangent segment L1 tangent to the arc segment C3 from the panel edge to the maximum curved camber, and the radius of the arc segment C3 is smaller than the radius of the uniform arc C1 corresponding to the maximum curved camber of the transverse cross-sectional curve of the curved liquid crystal panel.
Specifically, since the maximum curved arch height is not changed, in order to make the sight line as uniform as possible, the distance between the tangent point of the arc segment C3 and the tangent line segment L1 and the edge of the panel, that is, the distance between the segmentation point and the edge of the panel is not less than L/3, and L is the total length of the curved liquid crystal panel.
The arc segment C3 and the tangent segment L1 are positioned between the uniform arc C1 corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel and the forced displacement curve C2, and the feeling of human eyes on the curved picture cannot be influenced because the arc segment C3 and the tangent segment L1 are in uniform transition. The traditional uniform arc C1 with uniform curvature is replaced by the arc segment C3 with non-uniform curvature and the tangent segment L1, so that the bending stress generated by bending deformation of the liquid crystal panel can be reduced, the dark state display effect of the liquid crystal panel is shown in FIG. 6, and the problem of light leakage of four corners in a dark state can be improved.
In summary, according to the curved liquid crystal panel and the curved liquid crystal display of the present invention, the transverse cross-sectional curve of the curved liquid crystal panel exhibits a non-uniform curvature by using a forced displacement curve or a method of dividing an arc segment and a tangent segment, so as to replace the conventional uniform arc curvature, reduce the bending stress generated by the liquid crystal panel due to bending deformation, improve the problem of dark state light leakage at four corners, improve the optical quality of curved display, and increase the product competitiveness.
As described above, it will be apparent to those skilled in the art that various other changes and modifications can be made based on the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.
Claims (6)
1. A curved liquid crystal panel is characterized in that a transverse section curve of the curved liquid crystal panel has a variable curvature;
the transverse section curve of the curved liquid crystal panel is a forced displacement curve (C2) formed by a three-point forced bending mode;
the radius of each part of the forced displacement curve (C2) is smaller than the radius of a uniform circular arc (C1) corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel;
the transverse section curve of the curved liquid crystal panel keeps a uniform circular arc (C1) with uniform curvature and equal maximum bending arch height.
2. A curved liquid crystal panel is characterized in that a transverse section curve of the curved liquid crystal panel has a variable curvature;
the transverse section curve of the curved liquid crystal panel is divided into an arc section (C3) and a tangent line section (L1) tangent to the arc section (C3) from the edge of the panel to the maximum bending arch height;
the radius of the arc segment (C3) is smaller than that of a uniform arc (C1) corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel.
3. The curved liquid crystal panel of claim 2, wherein the distance between the tangent point of the circular arc segment (C3) and the tangent line segment (L1) and the edge of the panel is not less than L/3, and L is the total length of the curved liquid crystal panel.
4. A curved liquid crystal display is characterized by comprising a curved liquid crystal panel, wherein the transverse section curve of the curved liquid crystal panel has a variable curvature;
the transverse section curve of the curved liquid crystal panel is a forced displacement curve (C2) formed by a three-point forced bending mode, and the radius of each part of the forced displacement curve (C2) is smaller than the radius of a uniform circular arc (C1) corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel;
the transverse section curve of the curved liquid crystal panel keeps a uniform circular arc (C1) with uniform curvature and equal maximum bending arch height.
5. A curved liquid crystal display is characterized by comprising a curved liquid crystal panel, wherein the transverse section curve of the curved liquid crystal panel has a variable curvature;
the transverse section curve of the curved liquid crystal panel is divided into an arc section (C3) and a tangent line section (L1) tangent to the arc section (C3) from the edge of the panel to the maximum bending arch height, and the radius of the arc section (C3) is smaller than that of a uniform arc (C1) corresponding to the maximum bending arch height of the transverse section curve of the curved liquid crystal panel.
6. The curved liquid crystal display of claim 5, wherein the distance between the tangent point of the circular arc segment (C3) and the tangent line segment (L1) and the edge of the panel is greater than or equal to L/3, and L is the total length of the curved liquid crystal panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610933473.6A CN106338851B (en) | 2016-10-31 | 2016-10-31 | Curved surface liquid crystal display panel and curved surface liquid crystal display |
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| CN201610933473.6A CN106338851B (en) | 2016-10-31 | 2016-10-31 | Curved surface liquid crystal display panel and curved surface liquid crystal display |
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| CN106338851B true CN106338851B (en) | 2019-12-24 |
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| CN106950742B (en) * | 2017-05-24 | 2019-08-27 | 京东方科技集团股份有限公司 | A kind of curved-surface display device and preparation method thereof |
| CN108182876B (en) * | 2018-02-01 | 2020-05-05 | 惠州市华星光电技术有限公司 | Display screen |
| CN110794601B (en) * | 2019-11-19 | 2022-08-30 | 深圳市铁幕电子竞技科技有限公司 | Method and equipment for manufacturing large-curvature curved-surface liquid crystal display and display |
| CN114023202B (en) * | 2021-10-26 | 2023-12-05 | 惠州华星光电显示有限公司 | Display panel and display terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010048887A (en) * | 2008-08-19 | 2010-03-04 | Hitachi Displays Ltd | Display |
| KR101319543B1 (en) * | 2012-05-17 | 2013-10-21 | 삼성디스플레이 주식회사 | Curved dispaly apparatus and multi display apparatus including the same |
| KR101749728B1 (en) * | 2014-04-01 | 2017-06-22 | 삼성디스플레이 주식회사 | Curved display device |
| CN104385757B (en) * | 2014-12-12 | 2016-06-08 | 合肥鑫晟光电科技有限公司 | A kind of laminating apparatus and corresponding applying method |
| CN104570448A (en) * | 2015-01-27 | 2015-04-29 | 京东方科技集团股份有限公司 | Display panel and display device |
| KR102296749B1 (en) * | 2015-04-03 | 2021-09-03 | 삼성디스플레이 주식회사 | Display device |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |