TWI448784B - Backlight module - Google Patents
Backlight module Download PDFInfo
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- TWI448784B TWI448784B TW100122859A TW100122859A TWI448784B TW I448784 B TWI448784 B TW I448784B TW 100122859 A TW100122859 A TW 100122859A TW 100122859 A TW100122859 A TW 100122859A TW I448784 B TWI448784 B TW I448784B
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Description
本發明是有關於一種背光模組。The invention relates to a backlight module.
液晶面板被廣泛的運用於現今的生活中，由於液晶面板本身不發光，所以一般採用背光模組來提供液晶面板光源，又背光模組因為光源入射的方向，可分為直下式背光模組和側光式背光模組。The liquid crystal panel is widely used in today's life. Since the liquid crystal panel itself does not emit light, the backlight module is generally used to provide the liquid crystal panel light source, and the backlight module can be divided into a direct type backlight module because of the direction in which the light source is incident. Sidelight type backlight module.
而在側光式背光模組中，導光板是背光模組中的一關鍵元件，其作用在於導引光線。目前背光模組朝著薄型化發展，所以將導光板的厚度變薄是目前各研發廠努力的一個方向。但是，將導光板變薄的同時，也是將導光板的入光面變薄，隨著入光量的變少，使得必須面對導光板輝度下降的問題，所以如何將光源有效利用並且導入薄型化後的導光板，是必須思考並解決的。In the edge-lit backlight module, the light guide plate is a key component in the backlight module, and its function is to guide light. At present, the backlight module is developing toward thinning, so thinning the thickness of the light guide plate is one of the efforts of various R&D plants. However, when the light guide plate is thinned, the light incident surface of the light guide plate is also thinned, and as the amount of light entering is reduced, it is necessary to face the problem that the brightness of the light guide plate is lowered. Therefore, how to effectively use the light source and introduce the thinned light. The rear light guide plate must be considered and solved.
因此，本發明之目的，即在提供一種將光源做更有效利用的背光模組。Accordingly, it is an object of the present invention to provide a backlight module that utilizes a light source more efficiently.
於是，一種背光模組，包含一光源、一反射片、一導光板及一反射件。該反射片具有一形成有多個微結構的第一表面與一相反的第二表面。該導光板為光固化性光學材料塗佈於該反射片的第一表面固化形成，該導光板包括一靠近該光源的入光部及一自該入光部一側延伸的平板狀出光部，且該出光部的厚度小於該光源的厚度，該入光部具有一與該反射片第一表面結合的第三表面及一相反的第四表面。該反射件覆設於該光源及該導光板的入光部的第四表面上，且該反射件距離該反射片的高度由靠近該光源朝該出光部逐漸縮小。Therefore, a backlight module includes a light source, a reflective sheet, a light guide plate and a reflective member. The reflective sheet has a first surface formed with a plurality of microstructures and an opposite second surface. The light guide plate is formed by applying a photocurable optical material to the first surface of the reflective sheet. The light guide plate includes a light incident portion adjacent to the light source and a flat light exit portion extending from a side of the light incident portion. And the thickness of the light exit portion is smaller than the thickness of the light source, and the light incident portion has a third surface combined with the first surface of the reflective sheet and an opposite fourth surface. The reflector is disposed on the fourth surface of the light source and the light incident portion of the light guide plate, and the height of the reflector from the light source is gradually reduced toward the light exit portion.
較佳地，該導光板的入光部靠近該光源一側的厚度大於靠近該出光部一側的厚度。Preferably, the thickness of the light incident portion of the light guide plate near the light source side is greater than the thickness near the light exit portion side.
較佳地，該導光板入光部靠近該光源的一側的厚度等於該光源的厚度，且該入光部整體成楔形。Preferably, the thickness of the light incident portion of the light guide plate adjacent to the light source is equal to the thickness of the light source, and the light incident portion is integrally formed in a wedge shape.
較佳地，該反射件為弧形狀與傾斜狀兩者其中之一。Preferably, the reflecting member is one of an arc shape and a slope shape.
較佳地，該反射件為一內層可反光的燈罩，該燈罩包覆該光源及反射片的至少部分第二表面。Preferably, the reflector is an inner reflective film cover that covers at least a portion of the second surface of the light source and the reflective sheet.
較佳地，該反射件也可以是一層高反射率材質製成的反射板。Preferably, the reflector can also be a reflector made of a high reflectivity material.
本發明之功效在於：利用導光板的入光部和反射件的設計，使光源能夠盡量的進入導光板中，而達到整體導光板輝度提升的效果。The utility model has the advantages that the light source part of the light guide plate and the reflector are designed to enable the light source to enter the light guide plate as much as possible, thereby achieving the effect of improving the brightness of the whole light guide plate.
有關本發明之前述及其他技術內容、特點與功效，在以下配合參考圖式之四個較佳實施例的詳細說明中，將可清楚的呈現。The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention.
在本發明被詳細描述之前，要注意的是，在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.
參閱圖1，本發明背光模組之較佳實施例，包含一光源1、一反射片2、一導光板3、一反射件4及一光學膜組5。該反射片2為發泡式聚對苯二甲酸乙二酯(MCPET)製成，並且具有一形成有多個微結構211的第一表面21與一相反的第二表面22。Referring to FIG. 1 , a preferred embodiment of a backlight module of the present invention comprises a light source 1 , a reflective sheet 2 , a light guide plate 3 , a reflective member 4 , and an optical film assembly 5 . The reflection sheet 2 is made of foamed polyethylene terephthalate (MCPET) and has a first surface 21 formed with a plurality of microstructures 211 and an opposite second surface 22.
該導光板3為光固化性光學材料塗佈於該反射片2的第一表面21固化形成，導光板3包括一靠近光源1的入光部31及一自入光部31一側延伸的平板狀出光部32。該入光部31具有一與反射片2第一表面21結合的第三表面311及一相反的第四表面312。由於導光板3是利用塗佈光固化性光學材料且固化後形成，因此便於控制厚度及形狀。本實施例之設計是使導光板3的出光部32的厚度小於光源1的厚度，入光部31靠近光源1的一側厚度等於該光源1的厚度，並且導光板3入光部31的厚度朝著出光部32逐漸縮小，使入光部31整體成楔形。The light guide plate 3 is formed by applying a photocurable optical material to the first surface 21 of the reflective sheet 2. The light guide plate 3 includes a light incident portion 31 adjacent to the light source 1 and a flat plate extending from the side of the light incident portion 31. The light exit portion 32 is formed. The light incident portion 31 has a third surface 311 combined with the first surface 21 of the reflective sheet 2 and an opposite fourth surface 312. Since the light guide plate 3 is formed by applying a photocurable optical material and curing, it is easy to control the thickness and shape. The design of the embodiment is such that the thickness of the light exit portion 32 of the light guide plate 3 is smaller than the thickness of the light source 1. The thickness of the light incident portion 31 close to the light source 1 is equal to the thickness of the light source 1, and the thickness of the light guide plate 3 into the light portion 31. The light exit portion 32 is gradually reduced, and the light incident portion 31 is formed into a wedge shape as a whole.
反射件4覆設於該光源1及該導光板3的入光部31的第四表面312上。本實施例的反射件4是一內層可反光且包覆該光源1及反射片2的部分第二表面22的燈罩，例如：由一金屬罩體和一反射層製成。當然，該燈罩也可以視產品設計而異，例如完整包覆光源1以及反射片2的第二表面22。反射件4的覆設於該導光板3之入光部31第四表面312上的部分，距離反射片2的高度由靠近光源1朝出光部32逐漸縮小，而成弧形狀，其主要目的是為了能夠將光源1發出的光有效反射進導光板3的入光部31，且在本實施例中反射件4弧面的曲率半徑越大效果越佳。The reflector 4 is disposed on the fourth surface 312 of the light source 1 and the light incident portion 31 of the light guide plate 3. The reflector 4 of the present embodiment is an inner cover that is reflective and covers a portion of the second surface 22 of the light source 1 and the reflective sheet 2, for example, made of a metal cover and a reflective layer. Of course, the lampshade can also vary depending on the product design, such as completely covering the light source 1 and the second surface 22 of the reflective sheet 2. The portion of the reflector 4 that is disposed on the fourth surface 312 of the light incident portion 31 of the light guide plate 3 is gradually reduced in size from the light source 1 toward the light exit portion 32, and is formed into an arc shape. In order to effectively reflect the light emitted from the light source 1 into the light incident portion 31 of the light guide plate 3, the larger the radius of curvature of the curved surface of the reflector 4 in the present embodiment, the better the effect.
該光學膜組5為擴散片、稜鏡片等等光學膜的組合，並裝設於導光板3的出光部32上，其用意為使光源1發出的光線經導光板3傳導後，自出光部32發出的光均勻性更佳及亮度更好。The optical film group 5 is a combination of an optical film such as a diffusion sheet, a cymbal sheet, and the like, and is disposed on the light-emitting portion 32 of the light guide plate 3, which is intended to cause the light emitted from the light source 1 to be conducted through the light guide plate 3, and then the self-light-emitting portion. 32 produces better light uniformity and better brightness.
由於為了滿足導光板3變薄的需求，可能降低入光量而使背光模組的輝度降低。藉由本實施例之設計，光源1發出的光可充分進入導光板3入光部31，再加上反射件4確保光線反射進入導光板3，使進入導光板3的入光量增多，而增加了背光模組的輝度。In order to satisfy the demand for thinning of the light guide plate 3, it is possible to reduce the amount of light incident and lower the luminance of the backlight module. With the design of the embodiment, the light emitted by the light source 1 can enter the light-input portion 31 of the light guide plate 3 sufficiently, and the reflection member 4 ensures that the light is reflected into the light guide plate 3, so that the amount of light entering the light guide plate 3 is increased, and the amount of light entering the light guide plate 3 is increased. The brightness of the backlight module.
參閱圖2，本發明第二較佳實施例與第一較佳實施例的差別在於，導光板3的入光部31的厚度跟出光部32的厚度一樣，主要藉由反射件4確保光線反射進入導光板3而提高入光量。Referring to FIG. 2, the difference between the second preferred embodiment of the present invention and the first preferred embodiment is that the thickness of the light incident portion 31 of the light guide plate 3 is the same as the thickness of the light exit portion 32, and the light reflection is mainly ensured by the reflector 4. The light guide plate 3 is entered to increase the amount of light incident.
參閱圖3，本發明第三較佳實施例與第一較佳實施例的差別在於，反射件4並非內層可反光且包覆該光源1及反射片2的第二表面22的燈罩，而是一層用聚對苯二甲酸乙二酯(PET)高反射率材質製成的反射板，直接貼附於導光板3的入光部31。Referring to FIG. 3, the third preferred embodiment of the present invention differs from the first preferred embodiment in that the reflector 4 is not a lampshade in which the inner layer is reflective and covers the second surface 22 of the light source 1 and the reflection sheet 2, and It is a reflecting plate made of polyethylene terephthalate (PET) high reflectivity material, and is directly attached to the light incident portion 31 of the light guide plate 3.
參閱圖4，本發明第四較佳實施例與第三較佳實施例的差別在於，導光板3的入光部31的厚度跟出光部32的厚度一樣，而第三較佳實施例導光板3的入光部31整體成楔形。Referring to FIG. 4, the difference between the fourth preferred embodiment of the present invention and the third preferred embodiment is that the thickness of the light incident portion 31 of the light guide plate 3 is the same as the thickness of the light exit portion 32, and the light guide plate of the third preferred embodiment The light incident portion 31 of the third portion has a wedge shape as a whole.
綜上所述，光源1發出的光因為導光板3入光部31的設計，再加上反射件4，使進入導光板3出光部32的入光量增多，而增加了背光模組的輝度，故確實能達成本發明之目的。In summary, the light emitted by the light source 1 is increased in the amount of light entering the light exit portion 32 of the light guide plate 3 due to the design of the light incident portion 31 of the light guide plate 3, and the reflection member 4 is added, thereby increasing the brightness of the backlight module. Therefore, the object of the present invention can be achieved.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.
1．．．光源1. . . light source
2．．．反射片2. . . A reflective sheet
21．．．第一表面twenty one. . . First surface
211．．．微結構211. . . microstructure
22．．．第二表面twenty two. . . Second surface
3．．．導光板3. . . Light guide
31．．．入光部31. . . Light entering department
311．．．第三表面311. . . Third surface
312．．．第四表面312. . . Fourth surface
32．．．出光部32. . . Light exit
4．．．反射件4. . . Reflector
5．．．光學膜組5. . . Optical film set
圖1是一示意圖，說明本發明背光模組的第一較佳實施例；1 is a schematic view showing a first preferred embodiment of a backlight module of the present invention;
圖2是一示意圖，說明本發明背光模組的第二較佳實施例；2 is a schematic view showing a second preferred embodiment of the backlight module of the present invention;
圖3是一示意圖，說明本發明背光模組的第三較佳實施例；及3 is a schematic view showing a third preferred embodiment of the backlight module of the present invention; and
圖4是一示意圖，說明本發明背光模組的第四較佳實施例。4 is a schematic view showing a fourth preferred embodiment of the backlight module of the present invention.
1．．．光源1. . . light source
2．．．反射片2. . . A reflective sheet
21．．．第一表面twenty one. . . First surface
211．．．微結構211. . . microstructure
22．．．第二表面twenty two. . . Second surface
3．．．導光板3. . . Light guide
31．．．入光部31. . . Light entering department
311．．．第三表面311. . . Third surface
312．．．第四表面312. . . Fourth surface
32．．．出光部32. . . Light exit
4．．．反射件4. . . Reflector
5．．．光學膜組5. . . Optical film set
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100122859A TWI448784B (en) | 2011-06-29 | 2011-06-29 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100122859A TWI448784B (en) | 2011-06-29 | 2011-06-29 | Backlight module |
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| Publication Number | Publication Date |
|---|---|
| TW201300897A TW201300897A (en) | 2013-01-01 |
| TWI448784B true TWI448784B (en) | 2014-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100122859A TWI448784B (en) | 2011-06-29 | 2011-06-29 | Backlight module |
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| Country | Link |
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| TW (1) | TWI448784B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103487874B (en) * | 2013-10-14 | 2015-08-12 | 博昱科技（丹阳）有限公司 | A kind of method for making of the light guide sheet containing gradient thickness region |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200730960A (en) * | 2005-10-17 | 2007-08-16 | Philips Lumileds Lighting Co | Illumination system using phosphor remote from light source |
| TWM319423U (en) * | 2007-03-05 | 2007-09-21 | Innolux Display Corp | Liquid crystal display |
| CN201210211Y (en) * | 2008-06-16 | 2009-03-18 | 亚通光电科技(深圳)有限公司 | Back light module having wedge light conducting structure |
| US7572045B2 (en) * | 2002-03-28 | 2009-08-11 | Koninklijke Philips Electronics N.V. | Compact lighting system and display device |
| TW200941085A (en) * | 2008-03-31 | 2009-10-01 | Au Optronics Corp | Lampshade and backlight module having the same |
| TW201011403A (en) * | 2008-08-07 | 2010-03-16 | Omron Tateisi Electronics Co | Surface light source device |
-
2011
- 2011-06-29 TW TW100122859A patent/TWI448784B/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7572045B2 (en) * | 2002-03-28 | 2009-08-11 | Koninklijke Philips Electronics N.V. | Compact lighting system and display device |
| TW200730960A (en) * | 2005-10-17 | 2007-08-16 | Philips Lumileds Lighting Co | Illumination system using phosphor remote from light source |
| TWM319423U (en) * | 2007-03-05 | 2007-09-21 | Innolux Display Corp | Liquid crystal display |
| TW200941085A (en) * | 2008-03-31 | 2009-10-01 | Au Optronics Corp | Lampshade and backlight module having the same |
| CN201210211Y (en) * | 2008-06-16 | 2009-03-18 | 亚通光电科技(深圳)有限公司 | Back light module having wedge light conducting structure |
| TW201011403A (en) * | 2008-08-07 | 2010-03-16 | Omron Tateisi Electronics Co | Surface light source device |
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| TW201300897A (en) | 2013-01-01 |
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