TWI843293B - Optical color transforming structure - Google Patents
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Abstract
Description
本發明係為一種顏色轉換結構，特別是指一種可以將光線散射霧化的光學顏色轉換結構。The present invention is a color conversion structure, and in particular, an optical color conversion structure that can scatter and atomize light.
目前面板均使用LED背光模組，其係以導光板將LED的光線橫向或垂直傳輸，使得光線出射到面板的光線是均勻的。然而，若是將LED背光模組使用在電子產品表面LOGO處或是設計的一圖案處的話，例如蘋果(Apple Inc.)筆記型電腦或是智慧型手機的外表面上所設計的一蘋果形狀的LOGO處，由於此LOGO並不是顯示螢幕，僅為發光所表示的一品牌LOGO，因此以背光模組當作光源的話，成本很高。Currently, all panels use LED backlight modules, which use light guide plates to transmit LED light horizontally or vertically, so that the light emitted to the panel is uniform. However, if the LED backlight module is used in the logo or a designed pattern on the surface of an electronic product, such as the apple-shaped logo designed on the outer surface of an Apple Inc. notebook or smartphone, since this logo is not a display screen but only a brand logo that emits light, the cost of using the backlight module as a light source is very high.
再者，由於要根據使用者或是市場的趨勢，從蘋果型LOGO所發出的光的顏色需要有所不同，以供使用者或市場進行選擇，因此，不能僅由白光的LED直接出射到該LOGO，必須進行出射光的顏色的轉換。Furthermore, the color of the light emitted from the apple-shaped LOGO needs to be different according to the user or market trend for the user or the market to choose. Therefore, the white light cannot be directly emitted from the LED to the LOGO, and the color of the emitted light must be converted.
請參考中國第CN112820811A號公開的發明專利，其揭露一種提升模組顏色一致性的方法。其主要技術是將顏料與液態介質混合得到著色劑，並將著色劑製備成膠膜，再將膠膜附著於基板上並覆蓋發光晶片。然而，以壓合方式將膠膜附著於基板上並覆蓋發光晶片時，膠膜會發生應力與厚度變化，容易導致光線經過時的不均勻以及不均勻的色溫。Please refer to the invention patent No. CN112820811A published in China, which discloses a method for improving the color consistency of a module. The main technology is to mix the pigment with a liquid medium to obtain a colorant, and prepare the colorant into a film, and then attach the film to the substrate and cover the light-emitting chip. However, when the film is attached to the substrate and covers the light-emitting chip by pressing, the film will have stress and thickness changes, which can easily lead to uneven light and uneven color temperature.
另外，由於一般導光結構(例如前述的擋光模組)裡的各層需要讓光穿透進行傳輸，因此其各層大部分都是透明的，若是使用在前述電子產品表面LOGO處或是設計的圖案處顯示的話，容易讓使用者直接看到裡面的結構，因此需要加以改善。In addition, since each layer in a general light-guiding structure (such as the aforementioned light-blocking module) needs to allow light to penetrate for transmission, most of the layers are transparent. If it is used to display the logo or design pattern on the surface of the aforementioned electronic product, it is easy for the user to directly see the internal structure, so it needs to be improved.
為了解決上述先前技術的缺點，本發明揭露一種光學顏色轉換結構，其可應用在電子產品表面LOGO處或是設計的一圖案處，以取代目前常用的導光模組，藉此以達到降低成本。In order to solve the above-mentioned shortcomings of the prior art, the present invention discloses an optical color conversion structure, which can be applied to the logo or a designed pattern on the surface of an electronic product to replace the currently commonly used light guide module, thereby achieving cost reduction.
再者，本發明的光學顏色轉換結構具有一顏色轉換層，以將LED所發射出的第一色光轉換為不同顏色的第二色光而出射，藉此以提供可顯示不同顏色的LOGO提供使用者進行選擇，進而提高市場銷售量。同時，由於該顏色轉換層設置在該透明膠膜層上，僅以該透明膠膜層壓合到該電路板上，因此不會影響光線經過該顏色轉換層的均勻性，並能維持色溫的均勻。Furthermore, the optical color conversion structure of the present invention has a color conversion layer to convert the first color light emitted by the LED into a second color light of a different color for emission, thereby providing a LOGO that can display different colors for users to choose from, thereby increasing market sales. At the same time, since the color conversion layer is disposed on the transparent adhesive film layer, only the transparent adhesive film layer is pressed onto the circuit board, so it will not affect the uniformity of light passing through the color conversion layer, and the uniformity of color temperature can be maintained.
另外，本發明的光學顏色轉換結構具有例如一霧化層的一透光覆蓋層，以將由該顏色轉換層所轉換為不同顏色而出射的第二色光進行霧化(或部分遮蔽)，避免使用者從外觀看到該光學顏色轉換結構裡面的細部結構。In addition, the optical color conversion structure of the present invention has a light-transmitting covering layer such as an atomizing layer to atomize (or partially shield) the second color light converted by the color conversion layer into a different color and emitted, thereby preventing the user from seeing the detailed structure inside the optical color conversion structure from the outside.
因此，本發明揭露一種光學顏色轉換結構，包括一電路板；一或多個光源，設置在該電路板上，並與該電路板電性連接；一透明膠膜層，設置在該電路板上並包覆該一或多個光源；以及一顏色轉換層，設置在該透明膠膜層上，該顏色轉換層具有一光學入射面以及一光學出射面，該光學入射面面對該一或多個光源設置，該光學出射面設置在該光學入射面的相對側處，該光學入射面接觸該透明膠膜層。該一或多個光源朝向該顏色轉換層發射一第一色光，該第一色光從該光學入射面而入射到該顏色轉換層內，並經過該顏色轉換層而從該光學出射面而朝向該霧化層出射一第二色光，該第二色光的顏色不同於該第一色光的顏色。Therefore, the present invention discloses an optical color conversion structure, including a circuit board; one or more light sources, which are arranged on the circuit board and electrically connected to the circuit board; a transparent adhesive film layer, which is arranged on the circuit board and covers the one or more light sources; and a color conversion layer, which is arranged on the transparent adhesive film layer, and the color conversion layer has an optical incident surface and an optical exit surface, the optical incident surface is arranged facing the one or more light sources, the optical exit surface is arranged at the opposite side of the optical incident surface, and the optical incident surface contacts the transparent adhesive film layer. The one or more light sources emit a first color light toward the color conversion layer. The first color light is incident into the color conversion layer from the optical incident surface, and passes through the color conversion layer and emits a second color light from the optical exit surface toward the atomization layer. The color of the second color light is different from the color of the first color light.
在一些實施例中，該透明膠膜層以壓模方式與該電路板壓合在一起。In some embodiments, the transparent adhesive film layer is pressed together with the circuit board by compression molding.
在一些實施例中，該電路板為一可撓性電路板，且該一或多個光源是mini LED。In some embodiments, the circuit board is a flexible circuit board, and the one or more light sources are mini LEDs.
在一些實施例中，該透明膠膜層是由高分子樹脂所製成。In some embodiments, the transparent rubber film layer is made of polymer resin.
在一些實施例中，該透明膠膜層的一厚度為160µm。In some embodiments, a thickness of the transparent adhesive film layer is 160 μm.
在一些實施例中，該顏色轉換層由無機材料或有機材料所製成。In some embodiments, the color conversion layer is made of inorganic material or organic material.
在一些實施例中，該顏色轉換層包括多個量子點或螢光粉顆粒。In some embodiments, the color conversion layer includes a plurality of quantum dots or fluorescent powder particles.
在一些實施例中，該光學顏色轉換結構還包括一透光覆蓋層，設置在該顏色轉換層的該光學出射面上。In some embodiments, the optical color conversion structure further includes a light-transmitting cover layer disposed on the optical output surface of the color conversion layer.
在一些實施例中，該透光覆蓋為一霧化層，該第二色光經過該透光覆蓋層而進行霧化(或部分遮蔽)，該霧化層遠離該顏色轉換層的表面上形成有一光擴散結構。In some embodiments, the light-transmitting cover is an atomizing layer, the second color light is atomized (or partially shielded) by the light-transmitting cover, and a light diffusion structure is formed on the surface of the atomizing layer away from the color conversion layer.
在一些實施例中，該光擴散結構是微結構、微透鏡陣列結構、稜鏡陣列結構或由散射粒子構成的結構。In some embodiments, the light diffusion structure is a microstructure, a microlens array structure, a prism array structure, or a structure composed of scattering particles.
上文已相當廣泛地概述本揭露之技術特徵及優點，俾使下文之本揭露詳細描述得以獲得較佳瞭解。構成本揭露之申請專利範圍標的之其它技術特徵及優點將描述於下文。本揭露所屬技術領域中具有通常知識者應瞭解，可相當容易地利用下文揭示之概念與特定實施例可作為修改或設計其它結構或製程而實現與本揭露相同之目的。本揭露所屬技術領域中具有通常知識者亦應瞭解，這類等效建構無法脫離後附之申請專利範圍所界定之本揭露的精神和範圍。The above has been a fairly broad overview of the technical features and advantages of the present disclosure, so that the detailed description of the present disclosure below can be better understood. Other technical features and advantages that constitute the subject matter of the patent application scope of the present disclosure will be described below. Those with ordinary knowledge in the technical field to which the present disclosure belongs should understand that the concepts and specific embodiments disclosed below can be easily used to modify or design other structures or processes to achieve the same purpose as the present disclosure. Those with ordinary knowledge in the technical field to which the present disclosure belongs should also understand that such equivalent constructions cannot deviate from the spirit and scope of the present disclosure as defined by the attached patent application scope.
以下結合具體情況對本發明的具體實施方式作詳細說明。The specific implementation of the present invention is described in detail below in conjunction with specific situations.
圖1表示本發明一些實施例的光學顏色轉換結構的剖視示意圖。圖2表示本發明一些實施例的光學顏色轉換結構的剖視分解示意圖。圖3表示本發明一些實施例的光學顏色轉換結構於製作時的一階段的示意圖。Fig. 1 is a schematic cross-sectional view of an optical color conversion structure according to some embodiments of the present invention. Fig. 2 is a schematic cross-sectional exploded view of an optical color conversion structure according to some embodiments of the present invention. Fig. 3 is a schematic view of an optical color conversion structure according to some embodiments of the present invention at a stage of manufacture.
請參考圖1及圖2，本發明的光學顏色轉換結構100包括一電路板1、一或多個光源2、一透明膠膜層3、一顏色轉換層4以及一透光覆蓋層5。1 and 2 , the optical
電路板1可電性連接到一控制器(圖未示)。在一些實施例中，電路板1可為印刷電路板(PCB)或是可撓性電路板(FPC)，但並不以此為限。The
光源2可安裝或設置在電路板1上，並與電路板1電性連接。在一些實施例中，光源2可為發光二極體(LED)或mini LED，但並不以此為限。電路板20可被該控制器(圖未示)驅動而控制光源2的發光與否。光源2在被點亮而發光時可發出一第一色光L1。The
透明膠膜層3可設置在電路板20上且覆蓋光源2。在一些實施例中，透明膠膜層3可由高分子樹脂所製成，但並不以此為限。在一些實施例中，較佳者，透明膠膜層3的厚度可為160 µm。在一些實施例中，如圖3所示，透明膠膜層3可以用壓模方式與電路板1壓合在一起，但並不以此為限。The
顏色轉換層4可設置在透明膠膜層3上。在一些實施例中，顏色轉換層4為一非軟性材質所製。顏色轉換層4可具有一光學入射面41以及一光學出射面42。光學入射面41面對光源2設置，而光學出射面42設置在光學入射面41的相對側處。而光學入射面41接觸透明膠膜層3，且光學出射面42接觸透光覆蓋層5。The
顏色轉換層4可包括一透明材料層43和多個激發粒子44。該等激發粒子44均勻地分布在透明材料層43內。舉例來說，激發粒子44可為有機材料或無機材料的量子點或螢光粉顆粒，但並不以此為限。具體來說，該等激發粒子44是由II-VI族化合物、III-V族化合物、IV-VI族化合物、IV族化合物或其化合物之混合物所形成，但並不以此為限。
The
舉例來說，形成該等激發粒子44的II-VI族化合物是由CdSe、CdTe、ZnS、ZnSe、ZnTe、ZnO、HgS、HgSe、HgTe、CdSeS、CdSeTe、CdSTe、ZnSeS、ZnSeTe、ZnSTe、HgSeS、HgSeTe、HgSTe、CdZnS、CdZnSe、CdZnTe、CdHgS、CdHgSe、CdHgTe、HgZnS、HgZnSe、HgZnTe、CdZnSeS、CdZnSeTe、CdZnSTe、CdHgSeS、CdHgSeTe、CdHgSTe、HgZnSeS、HgZnSeTe、HgZnSTe或其他II-VI族化合物所形成，但並不以此為限。
For example, the II-VI compounds forming the
舉例來說，形成該等激發粒子44的III-V族化合物是由GaN、GaP、GaAs、GaSb、AlN、AlP、AlAs、AlSb、InN、InP、InAs、InSb、GaNP、GaNAs、GaNSb、GaPAs、GaPSb、AlNP、AlNAs、AlNSb、AlPAs、AlPSb、InNP、InNAs、InNSb、InPAs、InPSb、GaAlNP、GaAlNAs、GaAlNSb、GaAlPAs、GaAlPSb、GaInNP、GaInNAs、GaInNSb、GaInPAs、GaInPSb、InAlNP、InAlNAs、InAlNSb、InAlPAs、InAlPSb或III-V族化合物所形成，但並不以此為限。
For example, the III-V compounds forming the
舉例來說，形成該等激發粒子44的IV-VI族化合物是由SnS、SnSe、SnTe、PbS、PbSe、PbTe、SnSeS、SnSeTe、SnSTe、PbSeS、PbSeTe、PbSTe、SnPbS、SnPbSe、SnPbTe、SnPbSSe、SnPbSeTe、SnPbSTe或其他IV-VI族化合物所形成，但並不以此為限。
For example, the IV-VI group compounds forming the
舉例來說，形成該等激發粒子44的IV族化合物是由Si、Ge、SiC、SiGe或其他IV族化合物所形成，但並不以此為限。
For example, the IV group compounds forming the
透光覆蓋層5為人眼可視的，設置在顏色轉換層4的光學出射面42上且接觸光學出射面42。在一些實施例中，透光覆蓋層5可為白色的霧化層或是黑色的透光層，而本發明係以霧化層為例進行說明，並不以此為限。在一些實施例中，如霧化層的透光覆蓋層5遠離顏色轉換層4的一側的表面(即出光表面)上形成有一光擴散結構51。在本實施例中，舉例來說，如霧化層的透光
覆蓋層5是在該出光表面具有微結構的膜層，或是出光表面分布有散射粒子的擴散膜，但並不以此為限。或者，在其他實施例中，如霧化層的透光覆蓋層5亦可改成是在出光表面具有微透鏡陣列結構的膠膜，或是在出光表面具有稜鏡陣列結構的增亮膜，但並不以此為限。
The light-transmitting
根據上述的結構，控制器(圖未示)驅動電路板1，以點亮光源2而發光，使光源2發出一第一色光L1。接著，由光源2發出的第一色光L1會穿過透明膠膜層3而來到顏色轉換層4。之後，光源2朝向顏色轉換層4所發射第一色光L1則從光學入射面41入射到顏色轉換層4內，並經過顏色轉換層4而從光學出射面42朝向透光覆蓋層5出射而形成一第二色光L2，第二色光L2的顏色不同於第一色光L1的顏色。然後，第二色光L2會進入透光覆蓋層5而進行均勻地霧化。
According to the above structure, the controller (not shown) drives the
圖4表示應用本發明光學顏色轉換結構100的外觀示意圖。請參考圖4，其即展現出應用於筆記型電腦200外表面的LOGO 210處，意即，本發明中第二色光L2會進入如霧化層的透光覆蓋層5而進行均勻地霧化或部分遮蔽所產生的LOGO 210。
FIG4 shows a schematic diagram of the appearance of the optical
圖5表示應用本發明光學顏色轉換結構100在一電子產品上的設計圖案的外觀示意圖。請參考圖5，其即展現出應用於智慧型手機300背面的心型設計圖案310處，意即，本發明中第二色光L2會進入如霧化層的透光覆蓋層5而進行均勻地霧化或部分遮蔽所產生的心型設計圖案310。
FIG5 is a schematic diagram showing the appearance of a design pattern of an electronic product using the optical
綜上所述，本發明的光學顏色轉換結構100可應用在非顯示螢幕的LOGO 210及心型設計圖案310處，以取代目前常用的導光模組，藉此可降低成本。而本發明的顏色轉換層4可將光線轉換為不同顏色而出射，以提供可顯示不同顏色的LOGO給使用者進行選擇，進而提高市場銷售量。同時，由於顏色轉換層4設置在透明膠膜層3上，僅以透明膠膜層3壓合到電路板1上，因此不會影響光線經過顏色轉換層4的均勻性，並能維持色溫的均勻。再者，透光覆蓋層5可將由顏色轉換層4所轉換為不同顏色而出射的光進行霧化或部分遮蔽，避免使用者(即人眼)從外觀看到光學顏色轉換結構100裡面的細部結構。
In summary, the optical
100:光學顏色轉換結構 100:Optical color conversion structure
1:電路板 1: Circuit board
2:光源 2: Light source
3:透明膠膜層 3: Transparent adhesive film layer
4:顏色轉換層 4: Color conversion layer
41:光學入射面 41: Optical incident surface
42:光學出射面 42: Optical exit surface
43:透明材料層 43: Transparent material layer
44:激發粒子 44: Excitation particles
5:透光覆蓋層 5: Translucent covering layer
51:光擴散結構 51: Light diffusion structure
200:筆記型電腦 200: Laptop computer
210:LOGO 210:LOGO
300:智慧型手機 300: Smartphone
310:心型設計圖案 310: Heart-shaped design
L1:第一色光 L1: First color light
L2:第二色光 L2: Second color light
圖1表示本發明一些實施例的光學顏色轉換結構的剖視示意圖。 圖2表示本發明一些實施例的光學顏色轉換結構的剖視分解示意圖。 圖3表示本發明一些實施例的光學顏色轉換結構於製作時的一階段的示意圖。 圖4表示應用本發明光學顏色轉換結構在一電子產品上的LOGO的外觀示意圖。 圖5表示應用本發明光學顏色轉換結構在一電子產品上的設計圖案的外觀示意圖。 FIG. 1 is a schematic cross-sectional view of an optical color conversion structure of some embodiments of the present invention. FIG. 2 is a schematic cross-sectional view of an optical color conversion structure of some embodiments of the present invention. FIG. 3 is a schematic view of a stage of manufacturing an optical color conversion structure of some embodiments of the present invention. FIG. 4 is a schematic view of the appearance of a LOGO on an electronic product using the optical color conversion structure of the present invention. FIG. 5 is a schematic view of the appearance of a design pattern on an electronic product using the optical color conversion structure of the present invention.
100:光學顏色轉換結構 100:Optical color conversion structure
1:電路板 1: Circuit board
2:光源 2: Light source
3:透明膠膜層 3: Transparent adhesive film layer
4:顏色轉換層 4: Color conversion layer
5:透光覆蓋層 5: Translucent covering layer
51:光擴散結構 51: Light diffusion structure
L1:第一色光 L1: First color light
L2:第二色光 L2: Second color light
Claims (8)
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI843293B true TWI843293B (en) | 2024-05-21 |
| TW202422911A TW202422911A (en) | 2024-06-01 |
Family
ID=
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW202238239A (en) | 2021-03-26 | 2022-10-01 | 群創光電股份有限公司 | Backlight module and display device |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW202238239A (en) | 2021-03-26 | 2022-10-01 | 群創光電股份有限公司 | Backlight module and display device |
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