CN101794044A - Display device and bright enhancement film thereof - Google Patents
Display device and bright enhancement film thereof Download PDFInfo
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- CN101794044A CN101794044A CN 201010132313 CN201010132313A CN101794044A CN 101794044 A CN101794044 A CN 101794044A CN 201010132313 CN201010132313 CN 201010132313 CN 201010132313 A CN201010132313 A CN 201010132313A CN 101794044 A CN101794044 A CN 101794044A
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- cylindrical lens
- enhancement film
- hexagonal cylindrical
- bright enhancement
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Abstract
The invention relates to a bright enhancement film comprising a substrate and an optical microstructure, wherein the optical microstructure is provided with a plurality of hexangular cylindrical lens which are tightly arrayed on one surface of the substrate in a honeycomb shape; the section areas of the hexangular cylindrical lens are gradually reduced towards the direction away from the substrate from the surface of the substrate, wherein a gap is reserved between any two adjacent hexangular cylindrical lens. In addition, the invention also discloses a display device with the bright enhancement film. With the model of the hexangular cylindrical lens of the bright enhancement film, for incident light of different angles, the display device and the bright enhancement film thereof can force the back and forth of light to transmit through the hexangular cylindrical lens on one hand and can adjust the path from the light to an observer so as to provide stronger light intensity to the observer and thereby provide higher reflected brightness and display performance.
Description
Technical field
The present invention relates to a kind of display device, particularly relate to a kind of display device and bright enhancement film thereof.
Background technology
(Electropherotic display EPD) has a upper substrate, an infrabasal plate and an electrophoresis showed film to conventional electrophoretic formula display module, and the electrophoresis showed film is between upper substrate and infrabasal plate.If the electrophoresis-type display module does not dispose bright enhancement film (Brightness Enhancement Film, BEF) time, then light by upper substrate to electrophoretic display apparatus, can't pass the light that electrophoretic display apparatus reflected back the external world effectively because of upper substrate, cause the luminance shortage of watching the electrophoresis showed film.
When the electrophoresis-type display module configuration has bright enhancement film on the electrophoresis-type display module, in order to improve the brightness of electrophoresis-type display module.Usually, bright enhancement film has a microstructured layers, and microstructured layers is to form a plurality of microstructures with parallel columns on the bright enhancement film surface.
Owing to the light of external light source when the bearing of trend of any parallel columns microstructure of bright enhancement film is incident to the electrophoresis showed film, have gain effect on the brightness improving for the electrophoresis-type display module, to improve the brightness of electrophoresis-type display module; Yet, when the light of external light source and when being incident to the electrophoresis showed film along the bearing of trend of the parallel columns microstructure that strides across a plurality of bright enhancement films, can't have gain effect on the brightness improving to the electrophoresis-type display module on the contrary, and reduce the brightness of electrophoresis-type display module.
Summary of the invention
The object of the present invention is to provide a kind of display device and bright enhancement film thereof, all can reach the external world after reflection,, can effectively solve the defective that exists in the prior art in order to improve the reflecting brightness of display device by the incident light that various angles are provided.
One embodiment of the invention, this bright enhancement film comprise a base material and an optical microstructures.Optical microstructures is become by a plurality of hexagonal cylindricality lens combination, these hexagonal cylindrical lens closely are arranged in the one side of base material with honeycomb ground, these hexagonal cylindrical lens have a maximum secting area respectively at this face of base material, but the variation of the sectional area of these hexagonal cylindrical lens can be respectively be contracted to a minimum sectional area from this face of base material towards the direction away from base material gradually, and the corresponding surface of wherein any two adjacent hexagonal cylindrical lens is separated with a space to each other.
Another aspect of the present invention, this kind display device comprise a reflective display module, a bright enhancement film and a substratum transparent.This kind bright enhancement film comprises a base material and an optical microstructures.Optical microstructures is made up of a plurality of hexagonal cylindrical lens, these hexagonal cylindrical lens closely are arranged in the one side of base material with honeycomb ground, these hexagonal cylindrical lens have a maximum secting area respectively at this face of base material, but the variation of the sectional area of these hexagonal cylindrical lens can be respectively be contracted to a minimum sectional area from this face of base material towards the direction away from base material gradually, and the corresponding surface of wherein any two adjacent hexagonal cylindrical lens is separated with a space to each other.Substratum transparent is fixed these hexagonal cylindrical lens on this reflective display module in order to adhesion.
In sum, when display device of the present invention and bright enhancement film thereof are faced the incident light of multiple different angles, external form by the hexagonal cylindrical lens of bright enhancement film, can force coming and going of light on the one hand all via the hexagonal cylindrical lens, adjustable light is to beholder's path on the other hand, so that the beholder to be provided stronger light luminance, and then provide higher reflecting brightness of display device and display performance.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, appended graphic being described in detail as follows:
Fig. 1 is display device of the present invention and bright enhancement film thereof the synoptic diagram at an embodiment;
Fig. 2 is for being watched the arrangement position synoptic diagram of optical microstructures towards the direction of bright enhancement film by the substratum transparent of Fig. 1;
Fig. 3 is the 3-3 diagrammatic cross-section of Fig. 2 and the light synoptic diagram of advancing;
Fig. 4 is the synoptic diagram of bright enhancement film of the present invention at another embodiment;
Fig. 5 is the illumination gain diagram of bright enhancement film of the present invention and existing bright enhancement film.
100: display device 225: terminal surface
200: bright enhancement film 226: adjacent side
210: base material 300: reflective display module
211: the first 400: substratum transparent
212: the second L: external light source
220: optical microstructures θ: angle
221: hexagonal cylindrical lens P, W: length
222: corresponding side surface V: the beholder
223: the space
Embodiment
Below will and describe in detail with diagram and clearly demonstrate spirit of the present invention, after understanding embodiments of the invention, when can be by the technology of teachings of the present invention, change and modification break away from spirit of the present invention and scope as person skilled in the art person.
See also Fig. 1, Fig. 2 and shown in Figure 3.Fig. 1 is the synoptic diagram of display device 100 of the present invention at an embodiment.Fig. 2 is for being watched the arrangement position synoptic diagram of optical microstructures 220 towards the direction of bright enhancement film 200 by the substratum transparent 400 of Fig. 1.Fig. 3 is the 3-3 diagrammatic cross-section of Fig. 2 and the light synoptic diagram of advancing.
The present invention proposes a kind of display device 100 and bright enhancement film 200 thereof.This display device 100 comprises a bright enhancement film 200, one a reflective display module 300 and a substratum transparent 400.
The reflection type liquid crystal display module is loaded onto reflectorized material below liquid crystal panel, replace the luminescent material or the backlight module of transmissive liquid crystal display module, in the ambient light abundance, can utilize the light through direct reflection to illuminate screen.Owing to be merely able to the passive reflection environment light of accepting of energy, therefore be referred to as the passive type LCD MODULE again.
Electrophoresis display module, it is the reflected displaying device that utilizes the swimming principle, the principle of work of its demonstration is that the electron ion that leans against among transparent or the colour liquid moves, charged particle moves with the electrode of itself opposite charge in electric field, pixel is brightened or deepening through upset or mobile particulate, and can be fabricated on glass, metal or the plastic base.
Hexagonal cylindrical lens 221 is extended towards the direction away from base material 210 respectively, and the variation of the sectional area of these hexagonal cylindrical lens 221 is respectively from second 212 of base material 210 and towards dwindling gradually away from the direction of base material 210, perhaps be contracted to a minimum sectional area gradually towards direction near substratum transparent 400, it is long-pending to make that these hexagonal cylindrical lens 221 have maximum hexagonal section respectively on second 212 of base material 210, and it is long-pending that its terminal surface 225 away from base material 210 has minimum hexagonal section respectively.This means, be separated with a space 223 (Fig. 3) to each other between the corresponding side surface 222 of any two adjacent hexagonal cylindrical lens 221.
Substratum transparent 400 is positioned at the one side of reflective display module 300, and closely the terminal surface 225 of these hexagonal cylindrical lens 221 is sticked together and be fixed on this reflective display module 300 (Fig. 3).The material of substratum transparent 400 can for example be ultraviolet sclerosis glue (UV glue) or epoxy resin (epoxy).
So, see Fig. 3, no matter environment light source or external light source L provide the incident light of various orientation angles to reflective display module 300, bright enhancement film 200 of the present invention is by the external form of hexagonal cylindrical lens 221 and the space 223 between the hexagonal cylindrical lens 221, can force coming and going of light on the one hand all via hexagonal cylindrical lens 221, can adjust the path of reflection ray on the other hand to beholder V, so that beholder V to be provided stronger light luminance, and then provide display device 100 higher reflecting brightness and display performance.
An alternate embodiments of the present invention, optical microstructures 220 can be formed in one with base material 210, and wherein the material of bright enhancement film 200 for example is the transparent plastic material.That is to say, the hexagonal section of the maximum of these hexagonal cylindrical lens 221, be to be closely aligned each other with honey comb like arrangement mode, and the hex end face 225 of these hexagonal cylindrical lens 221, being its minimum hexagonal section, then is to be arranged on the substratum transparent 400 with gap with honey comb like arrangement mode each other or to be embedded in the substratum transparent 400.
This transparent plastic material for example can be polymethylmethacrylate (PolymethylMethacrylate, PMMA), polystyrene (Polystyrene, PS), polycarbonate (Polycarbonate, PC), polyethylene terephthalate (Polyethylene Terephthalate, PET) or pi (Polyimide).
Another alternate embodiments of the present invention sees also Fig. 1 and shown in Figure 4.Fig. 4 is the synoptic diagram of bright enhancement film of the present invention at another embodiment.
Wherein the material of base material 210 for example can be the transparent plastic material.This transparent plastic material for example can for polyethylene terephthalate (Polyethylene Terephthalate, PET) or polycarbonate (Polycarbonate PC) waits transparent material.Optical microstructures 220 can be ultraviolet ray (Ultravioletray, UV) curable material, for example polymethylacrylic acid (Polymethacrylic Acid) resin or the like.
For instance, base material 210 is a polyethylene terephthalate (PolyethyleneTerephthalate, PET) film.Optical microstructures 220 is formed through rolling out hexagonal cylindrical lens 221 by the ultraviolet light glue-line.
See also Fig. 2 and shown in Figure 3.Another alternate embodiments of the present invention, the change in size of these hexagonal cylindrical lens 221 can be:
(1) scope of the corresponding surface angle theta to each other of any two adjacent hexagon prism shape lens 221 be 10 degree to 45 degree, i.e. any angle numerical value of angle theta between 10 degree are spent with 45.
(2) scope of the length P between any two parallel edges of these hexagonal cylindrical lens 221 on second 212 (being in its maximum secting area) of base material 210 be 30 microns (μ m) to 160 microns (μ m), i.e. any numerical value of length P between 30 microns and 160 microns.The scope of the length W of any two parallel edges of the terminal surface 225 of these hexagonal cylindrical lens 221 (being in its minimum sectional area) is 12 microns to 96 microns, i.e. length W any one numerical value between 12 microns and 96 microns.
(3) like this, the ratio of the length P between any two parallel edges in the length W of any two parallel edges in the minimum sectional area of these hexagonal cylindrical lens 221 and the maximum secting area is between 0.4 and 0.6.This hexagonal cylindrical lens 221 embodiment above-mentioned any embodiment that can arrange in pairs or groups, make hexagonal cylindrical lens 221 have outside length P, W and the angle theta, the above-mentioned optical microstructures 220 of more can arranging in pairs or groups can be formed in one with base material 210 or independent moulding after the embodiment of recombinant.
In addition, because substratum transparent 400 closely is fixed on terminal surface 225 adhesions of these hexagonal cylindrical lens 221 on this reflective display module 300, make and do not have the gap between the reflective therewith display module 300 of terminal surface 225 of these hexagonal cylindrical lens 221, can prevent that the light that reflective here display module 300 is returned produces total reflection phenomenon, and then keep the light intensity of these reflective display module 300 passbacks.
Particularly, the scope of the refractive index of the refractive index of these hexagonal cylindrical lens 221 and substratum transparent 400 is all between 1.4 and 1.7.Between the reflective therewith display module 300 of the terminal surface 225 of these hexagonal cylindrical lens 221, do not have under the situation in gap, promptly can be considered these hexagonal cylindrical lens 221 and have identical or approaching refractive index with substratum transparent 400, be an integral body, can prevent that the light that reflective here display module 300 is returned produces total reflection phenomenon, and then keep the light intensity of these reflective display module 300 passbacks.
See also Fig. 1 and shown in Figure 5.Fig. 5 is the illumination gain diagram of bright enhancement film 200 of the present invention with prior art.The curve A of Fig. 5, B, C are respectively in the environment that the display module in a prior art does not dispose in the environment of bright enhancement film, the display module configuration of a prior art has an existing bright enhancement film and a display device 100 of the present invention disposes in the environment of bright enhancement film 200 of hexagonal cylindrical lens 221, and a test findings that all becomes 45 incident lights of spending to do with X-axis, Y-axis and Z axle is provided.
Like this, as shown in Figure 5, when the display module of prior art does not dispose bright enhancement film 200, the light intensity that is spread out of when then the display module of this prior art is zero degree at the visual angle, the light intensity that is spread out of when having existing bright enhancement film to be zero degree at the visual angle less than the display module configuration of prior art.See conversely, when display device 100 of the present invention disposes the bright enhancement film 200 of hexagonal cylindrical lens 221, the light intensity that is spread out of when then display module 300 is zero degree at the visual angle, the light intensity that is spread out of when having existing bright enhancement film to be zero degree at the visual angle greater than the display module configuration of prior art.So, thus can inference, the bright enhancement film 200 that the present invention has a hexagonal cylindrical lens 221 has a parallel columns microstructure compared to prior art bright enhancement film can provide preferable light intensity at the visual angle during for zero degree.
In sum, when display device 100 of the present invention and bright enhancement film 200 thereof are faced the incident light of multiple different angles, external form by the hexagonal cylindrical lens 221 of bright enhancement film 200, can force coming and going of light on the one hand all via hexagonal cylindrical lens 221, adjustable light is to the path of beholder V on the other hand, so that beholder V to be provided stronger light luminance, and then provide display device 100 higher reflecting brightness and display performance, particularly have higher reflecting brightness and display performance during for zero degree at the visual angle.
Among disclosed each embodiment as above of the present invention; be not in order to limit the present invention; anyly be familiar with this skill those skilled in the art; without departing from the spirit and scope of the present invention; when can doing various changes and modification, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (11)
1. a bright enhancement film is characterized in that, comprising:
One base material; And
One optical microstructures, formed by a plurality of hexagonal cylindrical lens, described hexagonal cylindrical lens closely is arranged in the one side of described base material with honeycomb ground, described hexagonal cylindrical lens has a maximum secting area respectively in the described one side of described base material, and described hexagonal cylindrical lens faces sectional area to a minimum sectional area that dwindles described hexagonal cylindrical lens away from the direction of described base material gradually from described one of described base material respectively, and the corresponding surface of wherein any two adjacent described hexagonal cylindrical lens is separated with a space to each other.
2. bright enhancement film as claimed in claim 1 is characterized in that, described optical microstructures and described base material are formed in one.
3. bright enhancement film as claimed in claim 1 is characterized in that described optical microstructures is formed on the described base material.
4. bright enhancement film as claimed in claim 3 is characterized in that, described optical microstructures is the resin of ultraviolet-curing.
5. bright enhancement film as claimed in claim 1 is characterized in that, any two adjacent described hexagonal cylindrical lens at interval the described two corresponding surfaces angle to each other in described space between 10 degree are spent with 45.
6. bright enhancement film as claimed in claim 1 is characterized in that, the length between any two parallel edges in the described maximum secting area of described hexagonal cylindrical lens is between 30 microns and 160 microns.
7. bright enhancement film as claimed in claim 1 is characterized in that, the length between any two parallel edges in the described minimum sectional area of described hexagonal cylindrical lens is between 12 microns and 96 microns.
8. bright enhancement film as claimed in claim 1, it is characterized in that the ratio of the length of any two parallel edges in the length between any two parallel edges in the described maximum secting area of described hexagonal cylindrical lens and the described minimum sectional area of described hexagonal cylindrical lens is between 0.4 and 0.6.
9. a display device is characterized in that, comprising:
One reflective display module;
Just like any described bright enhancement film in the claim 1 to 8; And
One substratum transparent is in order to stick together fixing described hexagonal cylindrical lens on described reflective display module.
10. display device as claimed in claim 9 is characterized in that, the refractive index of described hexagonal cylindrical lens and the refractive index of described substratum transparent are between 1.4 and 1.7.
11. display device as claimed in claim 10 is characterized in that, described reflective display module is a reflection type liquid crystal display module or an electrophoresis display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010132313 CN101794044A (en) | 2010-03-12 | 2010-03-12 | Display device and bright enhancement film thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010132313 CN101794044A (en) | 2010-03-12 | 2010-03-12 | Display device and bright enhancement film thereof |
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| CN101794044A true CN101794044A (en) | 2010-08-04 |
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| CN 201010132313 Pending CN101794044A (en) | 2010-03-12 | 2010-03-12 | Display device and bright enhancement film thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543570A (en) * | 2012-07-17 | 2014-01-29 | 希毕克斯影像有限公司 | Light-enhancing structure for electrophoretic display |
| CN110928098A (en) * | 2019-12-04 | 2020-03-27 | 中山大学 | High-contrast electronic paper display structure and electronic paper display device |
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| US20050124713A1 (en) * | 2003-12-04 | 2005-06-09 | Jones Clinton L. | Brightness enhancing film composition |
| US20060204676A1 (en) * | 2005-03-11 | 2006-09-14 | Jones Clinton L | Polymerizable composition comprising low molecular weight organic component |
| CN101008684A (en) * | 2006-01-24 | 2007-08-01 | 科桥电子股份有限公司 | Light-increase dispersal structure and manufacture process therefor |
| CN201037887Y (en) * | 2007-05-21 | 2008-03-19 | 台湾奈普光电科技股份有限公司 | Backlight module structure with reproducibility |
| CN100385316C (en) * | 2006-01-05 | 2008-04-30 | 友达光电股份有限公司 | Matric full image backlight module having optical grating point |
| CN101191868A (en) * | 2006-11-20 | 2008-06-04 | 鸿富锦精密工业（深圳）有限公司 | Optical plate and preparation method thereof |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050124713A1 (en) * | 2003-12-04 | 2005-06-09 | Jones Clinton L. | Brightness enhancing film composition |
| US20060204676A1 (en) * | 2005-03-11 | 2006-09-14 | Jones Clinton L | Polymerizable composition comprising low molecular weight organic component |
| CN100385316C (en) * | 2006-01-05 | 2008-04-30 | 友达光电股份有限公司 | Matric full image backlight module having optical grating point |
| CN101008684A (en) * | 2006-01-24 | 2007-08-01 | 科桥电子股份有限公司 | Light-increase dispersal structure and manufacture process therefor |
| CN101191868A (en) * | 2006-11-20 | 2008-06-04 | 鸿富锦精密工业（深圳）有限公司 | Optical plate and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543570A (en) * | 2012-07-17 | 2014-01-29 | 希毕克斯影像有限公司 | Light-enhancing structure for electrophoretic display |
| CN110928098A (en) * | 2019-12-04 | 2020-03-27 | 中山大学 | High-contrast electronic paper display structure and electronic paper display device |
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Application publication date: 20100804 |