CN114839812A - Brightening cornea and backlight module - Google Patents
Brightening cornea and backlight module Download PDFInfo
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- CN114839812A CN114839812A CN202210570394.9A CN202210570394A CN114839812A CN 114839812 A CN114839812 A CN 114839812A CN 202210570394 A CN202210570394 A CN 202210570394A CN 114839812 A CN114839812 A CN 114839812A
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
本发明公开一种增亮视角膜及背光模组，增亮视角膜包括基底及并排分布在基底上的若干个棱镜结构，棱镜结构设有第一斜面、第二斜面、垂直面和底面，第一斜面的下端与底面的一端连接，第一斜面与底面之间形成底角，底角为锐角，第一斜面的上端与第二斜面的上端连接，第一斜面与第二斜面之间形成顶角，第二斜面的下端与垂直面的上端连接，所述第二斜面与垂直面之间形成夹角，夹角与顶角相等，且均为钝角，垂直面的下端与底面的另一端连接，垂直面与底面之间形成直角。本发明通过将视角膜表面传统所采用的直角梯形棱镜结构改进成具有两个斜面的结构，从而使视角膜可呈现出两个方向的视角角度的同时，相对于传统的直角梯形棱镜结构具有一定的增亮效果。
The invention discloses a viewing angle enhancement film and a backlight module. The viewing angle enhancement film comprises a base and a plurality of prism structures arranged side by side on the base. The prism structures are provided with a first inclined surface, a second inclined surface, a vertical surface and a bottom surface. The lower end of an inclined surface is connected to one end of the bottom surface, a bottom angle is formed between the first inclined surface and the bottom surface, the bottom angle is an acute angle, the upper end of the first inclined surface is connected with the upper end of the second inclined surface, and a top is formed between the first inclined surface and the second inclined surface. Angle, the lower end of the second inclined surface is connected with the upper end of the vertical surface, an included angle is formed between the second inclined surface and the vertical surface, the included angle is equal to the top angle, and both are obtuse angles, and the lower end of the vertical surface is connected with the other end of the bottom surface , forming a right angle between the vertical surface and the bottom surface. The present invention improves the right-angled trapezoidal prism structure traditionally used on the surface of the viewing angle film into a structure with two inclined surfaces, so that the viewing angle film can present viewing angles in two directions, and at the same time, compared with the traditional right-angled trapezoidal prism structure, it has certain brightening effect.
Description
Technical Field
The invention relates to the technical field of viewing films, in particular to a brightening viewing film and a backlight module.
Background
The viewing film refers to a film or sheet which is applied to a TFT LCD backlight module and aims to change the light-emitting angle of the whole backlight system. The viewing film can realize specific light-emitting angles, multiple viewing angles and wide viewing angles in the TFT-LCD backlight module, and the special prism structure of the viewing film is utilized to concentrate light rays in all directions to specific direction angles through optical principles such as refraction, total reflection, light accumulation and the like, so that the viewing angle of the LCD panel is controlled.
Traditional cornea surface prism structure adopts right triangle structure or right trapezoid structure more, and the right triangle structure can only present the visual angle of a direction, and the right trapezoid structure although can present the visual angle of two directions, but the luminance presentation effect is lower, can't satisfy customer's demand.
Disclosure of Invention
The present invention is directed to overcome the disadvantages of the prior art, and provides a cornea and a backlight module for brightening a viewing angle in two directions.
The technical scheme of the invention is as follows:
the utility model provides a brightening cornea of looking at, includes the basement and distributes a plurality of prism structure on the basement side by side, prism structure is equipped with first inclined plane, second inclined plane, perpendicular and bottom surface, the lower extreme on first inclined plane is connected with the one end of bottom surface, form the base angle between first inclined plane and the bottom surface, the base angle is the acute angle, the upper end on first inclined plane is connected with the upper end on second inclined plane, form the apex angle between first inclined plane and the second inclined plane, the lower extreme on second inclined plane is connected with the upper end on perpendicular, form the contained angle between second inclined plane and the perpendicular, the contained angle equals with the apex angle, and is the obtuse angle, the lower extreme on perpendicular is connected with the other end of bottom surface, form the right angle between perpendicular and the bottom surface.
In a technical scheme, form 62 degrees base angles between first inclined plane and the bottom surface, the length on first inclined plane is 54.8um, the length on bottom surface is 50um, form 104 degrees apex angle between first inclined plane and the second inclined plane, the projection length that the second inclined plane corresponds the bottom surface is 24.3um, form 104 degrees contained angles between second inclined plane and the perpendicular.
In a technical scheme, form 55 degrees base angles between first inclined plane and the bottom surface, the length on first inclined plane is 45.6um, the length on bottom surface is 50um, form 108 degrees apex angles between first inclined plane and the second inclined plane, the projection length that the second inclined plane corresponds the bottom surface is 23.8um, form 108 degrees contained angles between second inclined plane and the perpendicular.
In a technical scheme, form 45 degrees base angles between first inclined plane and the bottom surface, the length on first inclined plane is 38.1um, the length on bottom surface is 50um, form 113 degrees apex angles between first inclined plane and the second inclined plane, the projection length that the second inclined plane corresponds the bottom surface is 23.1um, form 113 degrees contained angles between second inclined plane and the perpendicular.
In a technical scheme, form 40 degrees base angles between first inclined plane and the bottom surface, the length on first inclined plane is 35.7um, the length on bottom surface is 50um, form 115 degrees apex angles between first inclined plane and the second inclined plane, the projection length that the second inclined plane corresponds the bottom surface is 22.7um, form 115 degrees contained angles between second inclined plane and the perpendicular.
In a technical scheme, form 30 degrees base angles between first inclined plane and the bottom surface, the length on first inclined plane is 32.7um, the length on bottom surface is 50um, form 120 degrees apex angle between first inclined plane and the second inclined plane, the projection length that the second inclined plane corresponds the bottom surface is 21.7um, form 120 degrees contained angles between second inclined plane and the perpendicular.
Wherein, the interval between the apex angle of two adjacent prism structures is 10 ~ 200 um.
Wherein, the height of prism structure is 5 ~ 100 um.
Wherein, the thickness of basement is 10 ~ 300 um.
A backlight module comprises at least one brightening cornea, wherein the prism structure of the brightening cornea faces forward or backward to a liquid crystal screen.
Compared with the prior art, the invention has the beneficial effects that: the invention improves the traditional right-angle trapezoidal prism structure on the surface of the viewing film into a structure with two inclined surfaces, so that the viewing film can present viewing angles in two directions and has a certain brightening effect compared with the traditional right-angle trapezoidal prism structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a cornea with a conventional right-angle trapezoidal prism structure;
FIG. 2 is a schematic view of a structure for brightening a cornea according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 2, the present invention provides a brightening cornea, including a substrate 1 and a plurality of prism structures 2 distributed on the substrate 1 side by side, the thickness of the substrate 1 is 10 to 300um, the height H of the prism structures 2 is 5 to 100um, the distance P between the vertex angles of two adjacent prism structures 2 is 10 to 200um, the prism structure 2 is provided with a first inclined plane 21, a second inclined plane 22, a vertical plane 23 and a bottom plane 24, the lower end of the first inclined plane 21 is connected with one end of the bottom plane 24, a bottom angle a1 is formed between the first inclined plane 21 and the bottom plane 24, a bottom angle a1 is an acute angle, the upper end of the first inclined plane 21 is connected with the upper end of the second inclined plane 22, a vertex angle a2 is formed between the first inclined plane 21 and the second inclined plane 22, the lower end of the second inclined plane 22 is connected with the upper end of the vertical plane 23, an included angle A3 is formed between the second inclined plane 22 and the vertical plane 23, an included angle A3 is equal to the vertex angle a2, and is an obtuse angle, the lower end of the bottom plane 23 is connected with the other end of the bottom plane 24, the vertical surface 23 forms a right angle a4 with the bottom surface 24. The brightening cornea is improved into a structure with two inclined planes by improving a right-angle trapezoidal prism structure which is traditionally adopted on the surface of a viewing film shown in figure 1, so that the cornea can present viewing angles in two directions and has certain brightening effect compared with the traditional right-angle trapezoidal prism structure.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example one
In the embodiment, a base angle a1 of 62 degrees is formed between the first inclined plane 21 and the bottom plane 24 of the brightening corneal surface prism structure, the length D1 of the first inclined plane 21 is 54.8um, the length D2 of the bottom plane 24 is 50um, a vertex angle a2 of 104 degrees is formed between the first inclined plane 21 and the second inclined plane 22, the projection length D3 of the second inclined plane 22 corresponding to the bottom plane 24 is 24.3um, and an included angle A3 of 104 degrees is formed between the second inclined plane 22 and the vertical plane 23.
Example two
In the embodiment, a 55-degree base angle a1 is formed between the first inclined surface 21 and the bottom surface 24 of the brightening corneal surface prism structure, the length D1 of the first inclined surface 21 is 45.6um, the length D2 of the bottom surface 24 is 50um, a 108-degree apex angle a2 is formed between the first inclined surface 21 and the second inclined surface 22, the projection length D3 of the second inclined surface 22 corresponding to the bottom surface 24 is 23.8um, and a 108-degree included angle A3 is formed between the second inclined surface 22 and the vertical surface 23.
EXAMPLE III
In the embodiment, a 45-degree base angle a1 is formed between the first inclined surface 21 and the bottom surface 24 of the brightening corneal surface prism structure, the length D1 of the first inclined surface 21 is 38.1um, the length D2 of the bottom surface 24 is 50um, a 113-degree apex angle a2 is formed between the first inclined surface 21 and the second inclined surface 22, the projection length D3 of the second inclined surface 22 corresponding to the bottom surface 24 is 23.1um, and a 113-degree included angle A3 is formed between the second inclined surface 22 and the vertical surface 23.
Example four
In the embodiment, a bottom angle a1 of 40 degrees is formed between the first inclined surface 21 and the bottom surface 24 of the brightening corneal surface prism structure, the length D1 of the first inclined surface 21 is 35.7um, the length D2 of the bottom surface 24 is 50um, a vertex angle a2 of 115 degrees is formed between the first inclined surface 21 and the second inclined surface 22, the projection length D3 of the second inclined surface 22 corresponding to the bottom surface 24 is 22.7um, and an included angle A3 of 115 degrees is formed between the second inclined surface 22 and the vertical surface 23.
EXAMPLE five
In the embodiment, a base angle a1 of 30 degrees is formed between the first inclined surface 21 and the bottom surface 24 of the cornea surface brightening prismatic structure, the length D1 of the first inclined surface 21 is 32.7um, the length D2 of the bottom surface 24 is 50um, a 120-degree apex angle a2 is formed between the first inclined surface 21 and the second inclined surface 22, the projection length D3 of the second inclined surface 22 corresponding to the bottom surface 24 is 21.7um, and a 120-degree included angle A3 is formed between the second inclined surface 22 and the vertical surface 23.
The experimental results of examples one to five are shown in the following table:
the data show that compared with the traditional right-angle trapezoid prism structure designed by the same Pitch, the brightness of the first embodiment is improved by 0.6%, the brightness of the second embodiment is improved by 2.8%, the brightness of the third embodiment is improved by 3.5%, the brightness of the fourth embodiment is improved by 3.4%, and the brightness of the fifth embodiment is improved by 3.6%.
The brightening cornea is applied to a backlight module, the number of layers of the brightening cornea can be one or two, and the prism structure of the brightening cornea can be arranged in a forward direction or a backward direction of a liquid crystal screen.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210570394.9A CN114839812B (en) | 2022-05-24 | 2022-05-24 | A brightening viewing angle film and backlight module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210570394.9A CN114839812B (en) | 2022-05-24 | 2022-05-24 | A brightening viewing angle film and backlight module |
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| CN114839812A true CN114839812A (en) | 2022-08-02 |
| CN114839812B CN114839812B (en) | 2024-11-15 |
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| CN202210570394.9A Active CN114839812B (en) | 2022-05-24 | 2022-05-24 | A brightening viewing angle film and backlight module |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136349A (en) * | 1993-11-05 | 1996-11-20 | 联合讯号公司 | Backside illuminator using array of microprisms |
| JPH1184110A (en) * | 1997-09-12 | 1999-03-26 | Bridgestone Corp | Prism sheet and back light |
| CN1289065A (en) * | 1999-08-11 | 2001-03-28 | 株式会社半导体能源研究所 | Front lighting and electronics |
| KR20080007950A (en) * | 2006-07-19 | 2008-01-23 | 삼성전자주식회사 | A brightness enhancing film, a light guide plate, a backlight unit including the same, and a liquid crystal display including the same |
| WO2013022699A1 (en) * | 2011-08-05 | 2013-02-14 | Technical Graphics, Inc. | A method for producing complex color shifting effects |
| CN103984048A (en) * | 2013-07-30 | 2014-08-13 | 友达光电股份有限公司 | Optical film and display device with same |
| CN105511179A (en) * | 2016-03-03 | 2016-04-20 | 京东方科技集团股份有限公司 | Liquid crystal display |
| US20170023725A1 (en) * | 2015-07-23 | 2017-01-26 | Stanley Electric Co., Ltd. | Surface light source device and prism sheet |
| US20180231203A1 (en) * | 2015-08-04 | 2018-08-16 | Sharp Kabushiki Kaisha | Daylighting member, daylighting device, and installation method for daylighting member |
| US20210132422A1 (en) * | 2019-10-31 | 2021-05-06 | Samsung Display Co., Ltd. | Optical film and display device including the same |
| CN215729193U (en) * | 2021-07-16 | 2022-02-01 | 合肥京东方光电科技有限公司 | Backlight module and display device |
| CN217787550U (en) * | 2022-05-24 | 2022-11-11 | 东莞市光志光电有限公司 | Brightening cornea and backlight module |
-
2022
- 2022-05-24 CN CN202210570394.9A patent/CN114839812B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136349A (en) * | 1993-11-05 | 1996-11-20 | 联合讯号公司 | Backside illuminator using array of microprisms |
| JPH1184110A (en) * | 1997-09-12 | 1999-03-26 | Bridgestone Corp | Prism sheet and back light |
| CN1289065A (en) * | 1999-08-11 | 2001-03-28 | 株式会社半导体能源研究所 | Front lighting and electronics |
| KR20080007950A (en) * | 2006-07-19 | 2008-01-23 | 삼성전자주식회사 | A brightness enhancing film, a light guide plate, a backlight unit including the same, and a liquid crystal display including the same |
| WO2013022699A1 (en) * | 2011-08-05 | 2013-02-14 | Technical Graphics, Inc. | A method for producing complex color shifting effects |
| CN103984048A (en) * | 2013-07-30 | 2014-08-13 | 友达光电股份有限公司 | Optical film and display device with same |
| US20170023725A1 (en) * | 2015-07-23 | 2017-01-26 | Stanley Electric Co., Ltd. | Surface light source device and prism sheet |
| US20180231203A1 (en) * | 2015-08-04 | 2018-08-16 | Sharp Kabushiki Kaisha | Daylighting member, daylighting device, and installation method for daylighting member |
| CN105511179A (en) * | 2016-03-03 | 2016-04-20 | 京东方科技集团股份有限公司 | Liquid crystal display |
| US20210132422A1 (en) * | 2019-10-31 | 2021-05-06 | Samsung Display Co., Ltd. | Optical film and display device including the same |
| CN215729193U (en) * | 2021-07-16 | 2022-02-01 | 合肥京东方光电科技有限公司 | Backlight module and display device |
| CN217787550U (en) * | 2022-05-24 | 2022-11-11 | 东莞市光志光电有限公司 | Brightening cornea and backlight module |
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| Publication number | Publication date |
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| CN114839812B (en) | 2024-11-15 |
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Address after: 523477 Guangdong Province, Dongguan City, Hengli Town, Hengli East Ring Road No. 4 Patentee after: DONGGUAN LIGHT CHI PHOTOELECTRIC CO.,LTD. Country or region after: China Address before: 523000 First and Second Floors of No. 64 Dezheng Middle Road, Xiaobian Community, Chang'an Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN LIGHT CHI PHOTOELECTRIC CO.,LTD. Country or region before: China |
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