CN101089694A - Light module and optical diaphragm assembly using the light module - Google Patents
Light module and optical diaphragm assembly using the light module Download PDFInfo
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- CN101089694A CN101089694A CN 200610091876 CN200610091876A CN101089694A CN 101089694 A CN101089694 A CN 101089694A CN 200610091876 CN200610091876 CN 200610091876 CN 200610091876 A CN200610091876 A CN 200610091876A CN 101089694 A CN101089694 A CN 101089694A
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- brightening piece
- light guide
- optical diaphragm
- light
- prism
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Abstract
An optical membrane component used on light guide module is prepared as forming micro-prism structure on the first light intensification plate, using diffusion plate to avoid the first light intensification plate to reprint prism fringe onto the second light intensification plate and to atomize light to avoid Newton ring to be formed for greatly raising yield of product.
Description
Technical field
The present invention relates to a kind of light guide module, refer to a kind of optical diaphragm assembly of avoiding the light guide module of transfer printing prism line and Newton ring formation and being used for this light guide module especially.
Background technology
Fig. 1 is for showing the component decomposition map of a known light guide module.As shown in Figure 1, light guide module 100 is made up of with a posting 106 of ccontaining this optical diaphragm group 102 and this light guide plate 104 optical diaphragm group 102, light guide plate 104.As shown in Figure 2, optical diaphragm group 102 comprises a diffusion sheet (diffuser) 108 that covers light guide plate 104 surfaces and two brightening pieces (brightnessenhancement film) 112 and 114 that are covered in diffusion sheet 108 surfaces for placing the stacked structure that a plurality of diaphragm constituted on the light guide plate 104.Be to improve the light extraction efficiency of light guide module 100, in this to the brightening piece that is superimposed with each other in, the brightening piece 112 that is positioned at lower floor adopts the prism brightening piece with micro-prism structure, for example a thin type brightening piece (thin brightness enhancement film usually; TBEF); And the brightening piece 114 that is positioned at the upper strata adopts one can reflect specific skewness reflection of light formula brightening piece (dual brightness enhancement film usually; DBEF) or combined type brightening piece (multi-function brightness enhancement film).
Yet, on be set forth on the light guide plate 104 design of piling up diffusion sheet 108, lower floor's brightening piece 112 and upper strata brightening piece 114 in regular turn towards away from light guide plate 104 directions, cause following shortcoming easily.
At first, in general hand-held (handheld backlight backlight; HHBL) all need carry out high temperature resistant test in the manufacture process, but brightening piece can't bear usually in the high temperature of this test environment more than 85 ℃.Therefore, for example, under the situation that the reflective brightening piece in upper strata (DBEF) and lower floor's thin type brightening piece (TBEF) are arranged in pairs or groups, the influence that is subjected to high temperature can make the slight distortion of material production, cause the layers of prisms of thin type brightening piece to thrust reflective brightening piece, and make the surface formation prism angle transfer printing striped 116 as shown in Figure 3 of reflective brightening piece.
On the other hand, because of brightening piece belongs to plastic rubber substrate, itself be subjected to the external environment factor affecting of temperature for example or humidity easily or because of gap and the not good out-of-flatness phenomenon that causes warpage (waving) of anchor point control.As shown in Figure 4, when producing curved surface 118 when the brightening piece out-of-flatness, when light wave I is incident to 118 on light guide plate plane 120 and brightening piece curved surface, part light beam R1 is in the interface reflection of curved surface 118 with air, another part light beam R2 then is incident upon reflection again behind the light guide plate plane 120, this two parts light wave can interfere phenomenon, and presents the Newton ring phenomenon of a series of concentric colored circle on the brightening piece surface.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of light guide module is provided and is used for the optical diaphragm assembly of light guide module, it can avoid brightening piece to produce lines because of high temperature transfer, and can prevent that Newton ring from forming, with effective lifting finished product yield.
Technical solution of the present invention is: a kind of optical diaphragm assembly that is used for light guide module comprises one first brightening piece, one second brightening piece and is located at a diffusion sheet between first and second brightening piece.First brightening piece is formed with micro-prism structure, and second brightening piece can be the multi-layer film structure of the specific skewness light of reflection to improve light extraction efficiency.
The present invention also proposes a kind of light guide module, comprises a posting, a light guide plate, a prism brightening piece, a diffusion sheet and a reflective brightening piece.In ccontaining this posting of light guide plate, and the prism brightening piece is stacked and placed on this light guide plate, and diffusion sheet is stacked and placed on this prism brightening piece, and reflective brightening piece is stacked and placed on this diffusion sheet.
Characteristics of the present invention and advantage are: by design of the present invention, and because of diffusion sheet is located between first brightening piece and second brightening piece, can be so have first brightening piece of micro-prism structure because of on high temperature transfer prism line to the second brightening piece.On the other hand, send and pass through the light of first brightening piece by light guide plate, before arriving at second brightening piece in advance by being arranged at diffusion sheet between the two, the interference that the effect of light atomizing can be destroyed light wave by diffusion sheet prevents that Newton ring from forming, therefore, the structural design of optical diaphragm assembly of the present invention can effectively avoid transfer printing prism line and Newton ring to form, and significantly promotes the finished product yield.
Description of drawings
Fig. 1 is for showing the component decomposition map of a known light guide module.
Fig. 2 is the stacked structure synoptic diagram of known optical diaphragm group design.
Fig. 3 is for showing the synoptic diagram of prism angle transfer printing striped.
Fig. 4 forms the synoptic diagram of principle for the explanation Newton ring.
Fig. 5 is the light guide module element three-dimensional exploded view of one embodiment of the invention.
Fig. 6 is the optical diaphragm group stacked structure synoptic diagram of one embodiment of the invention.
The main element symbol description:
10 light guide modules, 12 optical diaphragm group
14 light guide plate, 16 postings
18 diffusion sheets, 22,24 brightening pieces
100 light guide modules, 102 optical diaphragm group
104 light guide plate, 106 postings
108 diffusion sheets, 112,114 brightening pieces
116 transfer printing stripeds, 118 brightening piece curved surfaces
120 light guide plate planar I light waves
R1, R2 light beam
Embodiment
Fig. 5 is the light guide module 10 element three-dimensional exploded views of one embodiment of the invention.As shown in Figure 5, light guide module comprises a posting 16 of an optical diaphragm group 12, light guide plate 14 and ccontaining optical diaphragm group 12 and light guide plate 14.
Fig. 6 is a synoptic diagram, the stacked structure that a plurality of diaphragm constituted of display optical diaphragm group 12.
As shown in Figure 6, design according to present embodiment, optical diaphragm group 12 is made up of a diffusion sheet (diffuser) 18, one first brightening piece (brightness enhancement film), 22 and 1 second brightening piece 24, and this diffusion sheet 18 is located between this first brightening piece 22 and this second brightening piece 24, and the one side that this first brightening piece 22 differs from diffusion sheet 18 is covered on the surface of light guide plate 14.
According to present embodiment, be stacked in undermost first brightening piece 22 and adopt a for example thin type brightening piece (thin brightness enhancement film; TBEF) prism brightening piece, its surface is formed with micro-prism structure, reaches the effect of blast with the travel angle of management light.Second brightening piece 24 that is stacked in the superiors adopts a reflecting type polarizing brightening piece (dual brightness enhancementfilm; DBEF) or a combined type brightening piece (multi-function BEF), it has multi-layer film structure and is recycled to reflect specific skewness light, reaches the effect of comprehensively adding lustre to.The combined type brightening piece for example can be a reflection polar biased formula brightening piece (reflective polarizer BEF; BEF-RP).
By design of the present invention, in the stacked structure of optical diaphragm group 12, be located between first brightening piece 22 and second brightening piece 24 because of diffusion sheet 18 is situated between, thus the micro-prism structure of first brightening piece 22 of lower floor not can because of high temperature transfer prism line to second brightening piece 24 on upper strata.On the other hand, send and pass through the light of first brightening piece 22 of lower floor by light guide plate 14, before second brightening piece 24 that arrives at the upper strata in advance by being arranged at diffusion sheet 18 between the two, by the effect of diffusion sheet 18, can destroy the interference of light wave and prevent that Newton ring from forming light atomizing.Therefore, the structural design of optical diaphragm group 12 of the present invention can effectively avoid transfer printing prism line and Newton ring to form, and significantly promotes the finished product yield.
Though the present invention discloses with specific embodiment; but it is not in order to limit the present invention; any those skilled in the art; the displacement of the equivalent assemblies of under the prerequisite that does not break away from design of the present invention and scope, having done; or, all should still belong to the category that this patent is contained according to equivalent variations and modification that scope of patent protection of the present invention is done.
Claims (7)
1. an optical diaphragm assembly that is used for light guide module is characterized in that, comprises:
One first brightening piece, this first brightening piece is formed with micro-prism structure;
One second brightening piece, this second brightening piece tool reflects the multi-layer film structure of specific skewness light; And
One diffusion sheet is located between this first brightening piece and this second brightening piece.
2. optical diaphragm assembly as claimed in claim 1 is characterized in that, this first brightening piece is a thin type brightening piece.
3. optical diaphragm assembly as claimed in claim 1 is characterized in that, this second brightening piece is a reflective brightening piece.
4. optical diaphragm assembly as claimed in claim 1 is characterized in that, this second brightening piece is a combined type brightening piece.
5. optical diaphragm assembly as claimed in claim 4 is characterized in that, this combined type brightening piece is a reflection polar biased formula brightening piece.
6. optical diaphragm assembly as claimed in claim 1 is characterized in that, the one side that this first brightening piece differs from this diffusion sheet is provided with a light guide plate.
7. a light guide module is characterized in that, comprises:
One posting;
One light guide plate is in ccontaining this posting;
One prism brightening piece is stacked and placed on this light guide plate;
One diffusion sheet is stacked and placed on the one side that this prism brightening piece differs from this light guide plate; And
One reflective brightening piece is stacked and placed on the one side that this diffusion sheet differs from this prism brightening piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610091876 CN101089694A (en) | 2006-06-13 | 2006-06-13 | Light module and optical diaphragm assembly using the light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610091876 CN101089694A (en) | 2006-06-13 | 2006-06-13 | Light module and optical diaphragm assembly using the light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101089694A true CN101089694A (en) | 2007-12-19 |
Family
ID=38943109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610091876 Pending CN101089694A (en) | 2006-06-13 | 2006-06-13 | Light module and optical diaphragm assembly using the light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101089694A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029416A (en) * | 2011-10-10 | 2013-04-10 | 靖江市永盛光电科技有限公司 | Backlight material attaching test method |
| CN105068163A (en) * | 2015-09-10 | 2015-11-18 | 中航华东光电有限公司 | High/low-temperature membrane wrinkling prevention membrane group structure and production method thereof |
| CN110989067A (en) * | 2019-05-28 | 2020-04-10 | 中国电子科技集团公司第五十五研究所 | Low-cost high-reliability optical combination structure |
-
2006
- 2006-06-13 CN CN 200610091876 patent/CN101089694A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029416A (en) * | 2011-10-10 | 2013-04-10 | 靖江市永盛光电科技有限公司 | Backlight material attaching test method |
| CN105068163A (en) * | 2015-09-10 | 2015-11-18 | 中航华东光电有限公司 | High/low-temperature membrane wrinkling prevention membrane group structure and production method thereof |
| CN110989067A (en) * | 2019-05-28 | 2020-04-10 | 中国电子科技集团公司第五十五研究所 | Low-cost high-reliability optical combination structure |
| CN110989067B (en) * | 2019-05-28 | 2020-12-15 | 中国电子科技集团公司第五十五研究所 | Low-cost high-reliability optical combination structure |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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