TWI607182B - Light guide assembly - Google Patents
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- TWI607182B TWI607182B TW106111782A TW106111782A TWI607182B TW I607182 B TWI607182 B TW I607182B TW 106111782 A TW106111782 A TW 106111782A TW 106111782 A TW106111782 A TW 106111782A TW I607182 B TWI607182 B TW I607182B
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Description
本案是關於一種導光組件。 This case relates to a light guiding component.
在液晶顯示裝置中，由於液晶自身不發光，因此需要搭配使用背光模組來提供顯示光源。此外，在電子紙顯示裝置中，由於顯示介質層需藉由反射光線顯示影像，因此通常會設置前光模組提供光線，使電子紙顯示裝置可於環境光源不足的情況下仍可正常顯示。不論是液晶顯示裝置的背光模組或電子紙顯示裝置的前光模組，均可利用導光板將多個點光源換成面光源，其中點光源例如發光二極體(light emitting diode；LED)。 In the liquid crystal display device, since the liquid crystal itself does not emit light, it is necessary to use a backlight module in combination to provide a display light source. In addition, in the electronic paper display device, since the display medium layer needs to display images by reflected light, the front light module is usually provided to provide light, so that the electronic paper display device can display normally under the condition that the ambient light source is insufficient. Whether it is a backlight module of a liquid crystal display device or a front light module of an electronic paper display device, a plurality of point light sources can be replaced with a surface light source by using a light guide plate, such as a light emitting diode (LED) .
一般而言，當於導光板的一側使用點光源時，除非導光板具有足夠的耦光區域才可避免可視區亮度不均的問題，但導光板的體積將會難以縮小。或者，可在導光板的出光面靠近光源處製作疏密不同的微結構，來達到亮度均勻的效果。然而，若顯示裝置具有多個獨立迴路控制多個點光源，則微結構的疏密分佈將無法適用。舉例來說，當兩相鄰點光源A、B被點亮的時機不同時，僅點亮光源A時，則微結構應設計為靠近光源A正前方的區域較疏，靠近光源B正前方的區域 較密。但僅點亮光源B時，則微結構應設計為靠近光源B正前方的區域較密，靠近光源A正前方的區域較疏將。如此一來，對應點光源A、B的微結構分佈將會彼此矛盾。 In general, when a point light source is used on one side of the light guide plate, the problem of uneven brightness of the visible area can be avoided unless the light guide plate has a sufficient coupling area, but the volume of the light guide plate will be difficult to reduce. Alternatively, a dense and different microstructure can be formed on the light-emitting surface of the light guide plate near the light source to achieve uniform brightness. However, if the display device has multiple independent loops to control multiple point sources, the dense distribution of the microstructures will not be applicable. For example, when the timings when the two adjacent point light sources A, B are illuminated are different, when only the light source A is lit, the microstructure should be designed to be closer to the area directly in front of the light source A, close to the front of the light source B. region More dense. However, when only the light source B is lit, the microstructure should be designed to be denser in the area immediately before the light source B, and closer to the area directly in front of the light source A. As a result, the microstructure distributions of the corresponding point sources A, B will contradict each other.
本發明之一技術態樣為一種導光組件。 One aspect of the present invention is a light guiding assembly.
根據本發明一實施方式，一種導光組件包含至少一光源與導光板。導光板具有至少一微結構區、入光面、相對的正面與背面。入光面位於正面與背面之間且鄰接正面與背面。微結構區位於正面或背面上。微結構區靠近入光面。微結構區對應該光源。微結構區其內具有複數個微結構。光源位於導光板外且朝向導光板的入光面。 According to an embodiment of the invention, a light guiding assembly includes at least one light source and a light guide plate. The light guide plate has at least one microstructure region, a light incident surface, and opposite front and back surfaces. The entrance surface is located between the front and back and abuts the front and back. The microstructure area is located on the front or back. The microstructure area is close to the light entrance surface. The microstructure area corresponds to the light source. The microstructure region has a plurality of microstructures therein. The light source is located outside the light guide plate and faces the light incident surface of the light guide plate.
在本發明一實施方式中，上述微結構區與導光板的入光面之間的距離介於1mm至5mm的範圍。 In an embodiment of the invention, the distance between the microstructured region and the light incident surface of the light guide plate is in the range of 1 mm to 5 mm.
在本發明一實施方式中，上述微結構所構成的輪廓為矩形、圓形、橢圓形、三角形或梯形。 In an embodiment of the invention, the microstructure formed by the microstructure is rectangular, circular, elliptical, triangular or trapezoidal.
在本發明一實施方式中，上述微結構區內的微結構為凸點或凹點。 In an embodiment of the invention, the microstructures in the microstructure region are bumps or pits.
在本發明一實施方式中，上述導光組件更包含光調整元件。當微結構區位於導光板的正面時，光調整元件位於正面且覆蓋微結構區。當微結構區位於導光板的背面時，光調整元件位於背面且覆蓋該結構區。 In an embodiment of the invention, the light guiding component further includes a light adjusting component. When the microstructure region is located on the front side of the light guide plate, the light adjustment element is located on the front side and covers the microstructure region. When the microstructure region is located on the back side of the light guide plate, the light adjustment member is located on the back surface and covers the structure region.
在本發明一實施方式中，上述光調整元件具有相對的第一邊緣與第二邊緣，第一邊緣與第二邊緣之間的距離不 小於微結構區的寬度。 In an embodiment of the invention, the light adjusting component has a first edge and a second edge, and the distance between the first edge and the second edge is not Less than the width of the microstructured zone.
在本發明一實施方式中，光調整元件具有一黏著層與一吸光層，黏著層位於吸光層與導光板之間。 In an embodiment of the invention, the light adjusting component has an adhesive layer and a light absorbing layer, and the adhesive layer is located between the light absorbing layer and the light guide plate.
在本發明一實施方式中，光調整元件具有一黏著層與一散光層，黏著層位於散光層與導光板之間。 In an embodiment of the invention, the light adjusting component has an adhesive layer and an astigmatism layer, and the adhesive layer is located between the astigmatism layer and the light guide plate.
在本發明一實施方式中，上述黏著層之折射率與導光板之折射率的差異介於0.1至0.7的範圍。 In an embodiment of the invention, the difference between the refractive index of the adhesive layer and the refractive index of the light guide plate is in the range of 0.1 to 0.7.
在本發明一實施方式中，上述導光組件更包含蓋體。蓋體覆蓋微結構區、光源與導光板的遮蔽區。 In an embodiment of the invention, the light guiding component further includes a cover. The cover covers the microstructured area, the light source and the shielding area of the light guide plate.
在本發明一實施方式中，上述微結構區位於導光板的遮蔽區中。 In an embodiment of the invention, the microstructured region is located in a shielding area of the light guide plate.
在本發明一實施方式中，上述導光組件具有複數個光源，且這些光源電性連接至少兩驅動元件。 In an embodiment of the invention, the light guiding component has a plurality of light sources, and the light sources are electrically connected to at least two driving components.
在本發明一實施方式中，上述光源的第一部分具有第一色溫，光源的第二部分具有第二色溫，且光源的第一部分與第二部分分別電性連接兩驅動元件。 In an embodiment of the invention, the first portion of the light source has a first color temperature, the second portion of the light source has a second color temperature, and the first portion and the second portion of the light source are electrically connected to the two driving elements.
在本發明一實施方式中，上述光源的第一部分具有第一顏色，光源的第二部分具有第二顏色，且光源的第一部分與第二部分分別電性連接兩驅動元件。 In an embodiment of the invention, the first portion of the light source has a first color, the second portion of the light source has a second color, and the first portion and the second portion of the light source are electrically connected to the two driving elements, respectively.
在本發明上述實施方式中，由於微結構區位於導光板的正面或背面上，且微結構區對應光源，因此當光源發光時，微結構區可破壞光線的全反射，使光線在微結構區折射出光，以避免在光源正前方的導光板區域產生亮區。也就是說，導光板藉由微結構區的設計來降低其靠近光源之區域的能 量，使光線傳遞到導光板的可視區時各位置能量均勻，減少熱點的光不均(hot spot mura)現象。 In the above embodiment of the present invention, since the microstructure region is located on the front or back surface of the light guide plate, and the microstructure region corresponds to the light source, when the light source emits light, the microstructure region may destroy the total reflection of the light, so that the light is in the microstructure region. The light is refracted to avoid bright areas in the area of the light guide directly in front of the light source. That is to say, the light guide plate reduces the energy of the region close to the light source by the design of the microstructure region The amount of energy is evenly distributed when the light is transmitted to the visible area of the light guide plate, thereby reducing the hot spot mura phenomenon of the hot spot.
100、100a~100j‧‧‧導光組件 100, 100a~100j‧‧‧Light guide components
102a、102b‧‧‧驅動元件 102a, 102b‧‧‧ drive components
110、110a~110e‧‧‧導光板 110, 110a~110e‧‧‧Light guide plate
111、111a~111e‧‧‧微結構區 111, 111a~111e‧‧‧microstructured area
112‧‧‧入光面 112‧‧‧Into the glossy surface
114、114a~114e‧‧‧正面 114, 114a~114e‧‧‧ positive
116‧‧‧背面 116‧‧‧Back
117‧‧‧可視區 117‧‧‧visible area
118‧‧‧遮蔽區 118‧‧‧shaded area
120a、120b‧‧‧光源 120a, 120b‧‧‧ light source
130、130a‧‧‧光調整元件 130, 130a‧‧‧Light adjustment components
131‧‧‧第一邊緣 131‧‧‧First edge
133‧‧‧第二邊緣 133‧‧‧ second edge
136‧‧‧黏著層 136‧‧‧Adhesive layer
138‧‧‧吸光層 138‧‧‧Light absorbing layer
139‧‧‧散光層 139‧‧‧ astigmatism
140‧‧‧蓋體 140‧‧‧ cover
2-2、6-6‧‧‧線段 2-2, 6-6‧‧‧ segments
d1、d2‧‧‧距離 D1, d2‧‧‧ distance
D‧‧‧方向 D‧‧‧ Direction
L1~L7‧‧‧光線 L1~L7‧‧‧Light
第1圖繪示根據本發明一實施方式之導光組件的俯視圖。 1 is a top plan view of a light guiding assembly according to an embodiment of the present invention.
第2圖繪示第1圖之導光組件沿線段2-2的剖面圖。 Figure 2 is a cross-sectional view of the light guiding assembly of Figure 1 taken along line 2-2.
第3圖繪示根據本發明一實施方式之導光組件的剖面圖。 3 is a cross-sectional view of a light guiding assembly in accordance with an embodiment of the present invention.
第4圖繪示根據本發明一實施方式之導光組件的剖面圖。 4 is a cross-sectional view of a light directing assembly in accordance with an embodiment of the present invention.
第5圖繪示根據本發明一實施方式之導光組件的俯視圖。 FIG. 5 is a top plan view of a light guiding assembly according to an embodiment of the present invention.
第6圖繪示第5圖之導光組件沿線段6-6的剖面圖。 Figure 6 is a cross-sectional view of the light guiding assembly of Figure 5 taken along line 6-6.
第7圖繪示根據本發明一實施方式之導光組件的剖面圖。 7 is a cross-sectional view of a light guiding assembly in accordance with an embodiment of the present invention.
第8圖繪示根據本發明一實施方式之導光組件的剖面圖。 8 is a cross-sectional view of a light guiding assembly in accordance with an embodiment of the present invention.
第9圖繪示根據本發明一實施方式之導光組件的剖面圖。 9 is a cross-sectional view of a light guiding assembly in accordance with an embodiment of the present invention.
第10圖繪示根據本發明一實施方式之導光組件的俯視圖。 FIG. 10 is a top plan view of a light guiding assembly according to an embodiment of the present invention.
第11圖繪示根據本發明一實施方式之導光組件的俯視圖。 11 is a top plan view of a light guiding assembly according to an embodiment of the present invention.
第12圖繪示根據本發明一實施方式之導光組件的俯視圖。 FIG. 12 is a top plan view of a light guiding assembly according to an embodiment of the present invention.
第13圖繪示根據本發明一實施方式之導光組件的俯視圖。 Figure 13 is a plan view of a light guiding assembly in accordance with an embodiment of the present invention.
以下配合圖式說明本發明之複數個實施方式，為 簡化圖式，一些習知慣用的結構與元件將以簡單示意的方式繪示之。 Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. Simplified drawings, some of the conventional structures and elements will be shown in a simplified schematic manner.
第1圖繪示根據本發明一實施方式之導光組件100的俯視圖。第2圖繪示第1圖之導光組件100沿線段2-2的剖面圖。同時參閱第1圖與第2圖，導光組件100包含導光板110與光源120a、120b。導光板110具有至少一微結構區111、入光面112、相對的正面114與背面116。入光面112位於正面114與背面116之間且鄰接正面114與背面116。在本實施方式中，微結構區111位於導光板110的背面116上。但在其他實施方式中，微結構區111也可位於導光板110的正面114上，並不用以限制本發明。微結構區111靠近入光面112且與光源120a、120b大致對齊。微結構區111其內具有複數個微結構，可供光線通過。在本發明實施例中，微結構區111中是以具有複數個凸點為例，但本發明不以此為限，亦可為複數個凹點(未圖示)。 FIG. 1 is a top plan view of a light guiding assembly 100 in accordance with an embodiment of the present invention. 2 is a cross-sectional view of the light guide assembly 100 of FIG. 1 taken along line 2-2. Referring also to FIGS. 1 and 2, the light guide assembly 100 includes a light guide plate 110 and light sources 120a, 120b. The light guide plate 110 has at least one microstructure region 111, a light incident surface 112, and an opposite front surface 114 and a back surface 116. The light incident surface 112 is located between the front side 114 and the back side 116 and abuts the front side 114 and the back side 116. In the present embodiment, the microstructure region 111 is located on the back surface 116 of the light guide plate 110. However, in other embodiments, the microstructure region 111 may also be located on the front surface 114 of the light guide plate 110, and is not intended to limit the present invention. The microstructure region 111 is adjacent to the light incident surface 112 and is substantially aligned with the light sources 120a, 120b. The microstructure region 111 has a plurality of microstructures therein for allowing light to pass therethrough. In the embodiment of the present invention, the plurality of bumps are exemplified in the microstructure region 111. However, the present invention is not limited thereto, and may be a plurality of pits (not shown).
光源120a、120b位於導光板110外，且光源120a、120b朝向導光板110的入光面112。光源120a、120b可以為點光源，例如發光二極體(LED)。導光板110的正面114與背面116可作為導光板110的出光面。舉例來說，當導光組件100應用於液晶顯示裝置時，導光組件100為背光模組，導光板110的正面114為出光面，其上方可設置液晶顯示面板。當導光組件100應用於電子紙顯示裝置時，導光組件100為前光模組，導光板110的背面116為出光面，其下方可設置電子紙顯示面板。 The light sources 120a and 120b are located outside the light guide plate 110, and the light sources 120a and 120b face the light incident surface 112 of the light guide plate 110. Light sources 120a, 120b can be point sources, such as light emitting diodes (LEDs). The front surface 114 and the back surface 116 of the light guide plate 110 can serve as a light exit surface of the light guide plate 110. For example, when the light guiding component 100 is applied to a liquid crystal display device, the light guiding component 100 is a backlight module, and the front surface 114 of the light guiding plate 110 is a light emitting surface, and a liquid crystal display panel can be disposed above the light guiding panel 110. When the light guiding component 100 is applied to the electronic paper display device, the light guiding component 100 is a front light module, and the back surface 116 of the light guiding plate 110 is a light emitting surface, and an electronic paper display panel can be disposed under the light guiding plate 110.
當光源120a、120b發光時，由於微結構區111位 於導光板110上且分別與光源120a、120b對齊，因此具有微結構的微結構區111可破壞光線的全反射，使光線在微結構區111折射出光，以避免在光源120a、120b正前方的導光板110區域產生亮區。舉例來說，當光線L1傳遞至背面116的微結構區111時，可讓光線L1在微結構區111折射出光形成光線L2，而不會在導光板110中發生全反射。導光板110是藉由微結構區111的設計來降低其靠近光源120a、120b之區域的能量，使光線傳遞到導光板110的可視區117時各位置能量均勻，減少熱點的光不均(hot spot rmura)現象。 When the light sources 120a, 120b emit light, due to the microstructure area 111 On the light guide plate 110 and respectively aligned with the light sources 120a, 120b, the microstructured region 111 having a microstructure can destroy the total reflection of the light, so that the light refracts light in the microstructure region 111 to avoid being directly in front of the light sources 120a, 120b. A bright area is created in the area of the light guide plate 110. For example, when the light ray L1 is transmitted to the microstructure region 111 of the back surface 116, the light ray L1 can be made to refract the light forming light ray L2 in the microstructure region 111 without causing total reflection in the light guide plate 110. The light guide plate 110 is designed to reduce the energy of the region close to the light sources 120a, 120b by the design of the microstructure region 111, so that the light is transmitted to the visible region 117 of the light guide plate 110, and the energy at each position is uniform, thereby reducing the unevenness of the hot spot. Spot rmura) phenomenon.
微結構區111與導光板110的入光面112之間的距離d1可介於1mm至5mm的範圍，使微結構區111能有效破壞光源120a、120b正前方之導光板110區域中的全反射。在本實施方式中，微結構區111內的微結構所構成的輪廓為矩形或正方形，但在其他實施方式中，微結構區111內的微結構所構成的輪廓也可為圓形、橢圓形、三角形或梯形，並不用以限制本發明。 The distance d1 between the microstructure region 111 and the light incident surface 112 of the light guide plate 110 may be in the range of 1 mm to 5 mm, so that the microstructure region 111 can effectively destroy the total reflection in the region of the light guide plate 110 directly in front of the light sources 120a, 120b. . In this embodiment, the microstructure formed by the microstructures in the microstructure region 111 is rectangular or square, but in other embodiments, the microstructure formed by the microstructures in the microstructure region 111 may also be circular or elliptical. , triangular or trapezoidal, is not intended to limit the invention.
在本實施方式中，光源120a、120b分別電性連接驅動元件102a、102b，因此光源120a、120b屬不同迴路而可分別被驅動元件102a、102b點亮或熄滅。在第1圖中，光源120a的數量為三，可視為光源的第一部分；光源120b的數量為二，可視為光源的第二部分。光源120a可具有第一色溫(例如6000K)，光源120b可具有第二色溫(例如4000K)。或者，光源120a可具有第一顏色(例如紅色)，光源120b可具有第二顏色(例如藍色)。由於導光板110之微結構區111的位置分別對 應光源120a、120b的位置，因此每一光源120a、120b正前方的光線可從對應位置的微結構區111折射出光。在本文中，位置上的「對應」關係意指大致對齊的意思。當光源120a點亮而光源120b熄滅時，光源120a正前方的光線從對齊光源120a的微結構區111折射出光，對齊光源120b的微結構區111並不會影響光源120a的光線。當光源120b點亮而光源120a熄滅時，光源120b正前方的光線從對齊光源120b的微結構區111折射出光，對齊光源120a的微結構區111並不會影響光源120b的光線。 In the present embodiment, the light sources 120a and 120b are electrically connected to the driving elements 102a and 102b, respectively. Therefore, the light sources 120a and 120b are different circuits and can be turned on or off by the driving elements 102a and 102b, respectively. In Fig. 1, the number of light sources 120a is three, which can be regarded as the first part of the light source; the number of light sources 120b is two, which can be regarded as the second part of the light source. Light source 120a can have a first color temperature (eg, 6000K) and light source 120b can have a second color temperature (eg, 4000K). Alternatively, light source 120a can have a first color (eg, red) and light source 120b can have a second color (eg, blue). Since the positions of the microstructure regions 111 of the light guide plate 110 are respectively opposite The position of the light sources 120a, 120b is such that light rays directly in front of each of the light sources 120a, 120b can refract light from the microstructured regions 111 at corresponding locations. In this context, a "correspondence" relationship at a location means substantially aligned. When the light source 120a is turned on and the light source 120b is turned off, the light directly in front of the light source 120a is refracted from the microstructure region 111 of the alignment light source 120a, and the alignment of the microstructure region 111 of the light source 120b does not affect the light of the light source 120a. When the light source 120b is turned on and the light source 120a is turned off, the light directly in front of the light source 120b is refracted from the microstructure region 111 of the alignment light source 120b, and the alignment of the microstructure region 111 of the light source 120a does not affect the light of the light source 120b.
應瞭解到，已敘述過的元件連接關係與功效將不再重複贅述，合先敘明。在以下敘述中，將說明其他形式的導光組件。 It should be understood that the relationship and function of the components that have been described will not be repeated, and will be described first. In the following description, other forms of light guiding components will be described.
第3圖繪示根據本發明一實施方式之導光組件100a的剖面圖。導光組件100a包含導光板110a與光源120a。與第2圖實施方式不同的地方在於：第3圖的微結構區111a是位於導光板110a的正面114a上。這樣的設計，導光組件100a仍可具有前述第1圖、第2圖之導光組件100的功效。 3 is a cross-sectional view of a light guiding assembly 100a according to an embodiment of the present invention. The light guide assembly 100a includes a light guide plate 110a and a light source 120a. The difference from the embodiment of Fig. 2 is that the microstructure region 111a of Fig. 3 is located on the front surface 114a of the light guide plate 110a. With such a design, the light guiding unit 100a can still have the functions of the light guiding unit 100 of the first and second figures.
第4圖繪示根據本發明一實施方式之導光組件100b的剖面圖。導光組件100b包含導光板110與光源120a。與第2圖實施方式不同的地方在於：導光組件100b還包含蓋體140。導光板110被蓋體140遮蔽的部分為遮蔽區118，未被蓋體140遮蔽的部分為可視區117。蓋體140覆蓋光源120a與導光板110的微結構區111與遮蔽區118。換句話說，蓋體140與光源120a、導光板110的遮蔽區118、微結構區111重疊。導光 板110的微結構區111位於遮蔽區118中。微結構區111可確保光源120a的光線傳遞至導光板110可視區117時的亮度是均勻的。 4 is a cross-sectional view of a light guiding assembly 100b according to an embodiment of the present invention. The light guiding assembly 100b includes a light guide plate 110 and a light source 120a. The difference from the embodiment of Fig. 2 is that the light guiding unit 100b further includes a cover 140. The portion of the light guide plate 110 that is shielded by the cover 140 is the shielding area 118, and the portion that is not covered by the cover 140 is the visible area 117. The cover 140 covers the light source 120a and the microstructured region 111 and the shielding region 118 of the light guide plate 110. In other words, the cover 140 overlaps with the light source 120a, the shielding area 118 of the light guide plate 110, and the microstructure area 111. Light guide The microstructured region 111 of the panel 110 is located in the masking region 118. The microstructure region 111 ensures that the light of the light source 120a is uniform when the light is transmitted to the visible region 117 of the light guide plate 110.
第5圖繪示根據本發明一實施方式之導光組件100c的俯視圖。第6圖繪示第5圖之導光組件100c沿線段6-6的剖面圖。為求簡潔，在第5圖、第10圖至第13圖將省略第1圖的驅動元件102a、102b。同時參閱第5圖與第6圖，導光組件100c包含導光板110與光源120a、120b。與第1圖、第2圖實施方式不同的地方在於：導光組件100c還包含光調整元件130。在本實施方式中，微結構區111位於導光板110的背面116，光調整元件130位於背面116且覆蓋微結構區111。光調整元件130具有黏著層136與吸光層138。黏著層136位於吸光層138與導光板110的背面116之間。黏著層136之折射率與導光板110之折射率的差異可介於0.1至0.7的範圍。舉例來說，由於導光板110的折射率為1.58，空氣的折射率為1，因此當黏著層136的折射率為1.52時，可進一步提升光的臨界角，讓小於臨界角的光線(例如光線L3)可折射穿過導光板110至黏著層136(例如形成光線L4)，進而被吸光層138吸收。在本實施方式中，吸光層138可以為深色(例如黑色)，有助於吸收光線。 FIG. 5 is a top plan view of a light guiding assembly 100c according to an embodiment of the present invention. Figure 6 is a cross-sectional view of the light guiding assembly 100c of Figure 5 taken along line 6-6. For the sake of brevity, the driving elements 102a and 102b of Fig. 1 will be omitted in Figs. 5 and 10 to 13. Referring to FIGS. 5 and 6, the light guide assembly 100c includes a light guide plate 110 and light sources 120a, 120b. The difference from the first and second embodiments is that the light guiding unit 100c further includes a light adjusting element 130. In the present embodiment, the microstructure region 111 is located on the back surface 116 of the light guide plate 110, and the light adjustment element 130 is located on the back surface 116 and covers the microstructure region 111. The light adjustment element 130 has an adhesive layer 136 and a light absorbing layer 138. The adhesive layer 136 is located between the light absorbing layer 138 and the back surface 116 of the light guide plate 110. The difference between the refractive index of the adhesive layer 136 and the refractive index of the light guide plate 110 may range from 0.1 to 0.7. For example, since the refractive index of the light guide plate 110 is 1.58 and the refractive index of the air is 1, when the refractive index of the adhesive layer 136 is 1.52, the critical angle of the light can be further increased to make the light smaller than the critical angle (for example, light). L3) can be refracted through the light guide plate 110 to the adhesive layer 136 (for example, to form the light L4), and is absorbed by the light absorbing layer 138. In the present embodiment, the light absorbing layer 138 may be dark (eg, black) to help absorb light.
光調整元件130與微結構區111均可破壞導光板110之高能量區的內全反射，可進一步使光調整元件130與微結構區111右側之導光板110區域(例如不被蓋體遮蔽的可視區117)的亮度分佈均勻。此外，光調整元件130可避免因光源 120a、120b的組裝公差、微結構區111的製作公差造成導光板110產生的不規則亮紋，且能解決穿出微結構區111之光線產生的漏光問題。 Both the light adjusting component 130 and the microstructure region 111 can destroy the total total reflection of the high energy region of the light guide plate 110, and further the light adjusting component 130 and the light guide plate 110 on the right side of the microstructure region 111 (for example, not covered by the cover) The brightness distribution of the visible area 117) is uniform. In addition, the light adjustment component 130 can avoid the light source The assembly tolerances of 120a, 120b and the manufacturing tolerances of the microstructured region 111 cause irregular light lines generated by the light guide plate 110, and can solve the light leakage problem caused by the light passing through the microstructure region 111.
在本實施方式中，光調整元件130的長度方向與導光板110的入光面112的長度方向相同(均為方向D)，且光調整元件130的長度與導光板110的寬度大致相同。光調整元件130具有相對的第一邊緣131與第二邊緣133。光調整元件130的第一邊緣131鄰接導光板110的入光面112，且第一邊緣131與第二邊緣133之間的距離d2大於等於微結構區111的寬度而能覆蓋住微結構區111，在一實施例中距離d2介於3mm至7mm的範圍，使光調整元件130除了能有破壞導光板110高能量區的全反射，還可避免過度吸收光線，影響導光板110整體亮度。 In the present embodiment, the longitudinal direction of the light adjustment element 130 is the same as the longitudinal direction of the light incident surface 112 of the light guide plate 110 (all in the direction D), and the length of the light adjustment element 130 is substantially the same as the width of the light guide plate 110. The light adjustment element 130 has opposing first and second edges 131, 133. The first edge 131 of the light adjusting component 130 abuts the light incident surface 112 of the light guide plate 110, and the distance d2 between the first edge 131 and the second edge 133 is greater than or equal to the width of the microstructure region 111 to cover the microstructure region 111. In one embodiment, the distance d2 is in the range of 3 mm to 7 mm, so that the light adjusting component 130 can avoid excessive absorption of light and affect the overall brightness of the light guide plate 110, in addition to destroying the total reflection of the high energy region of the light guide plate 110.
第7圖繪示根據本發明一實施方式之導光組件100d的剖面圖。導光組件100d包含導光板110a與光源120a。與第6圖實施方式不同的地方在於：導光板110a的微結構區111a位於導光板110a的正面114a，且光調整元件130位於導光板110a的正面114a且覆蓋微結構區111a。這樣的設計，導光組件100d仍可具有前述第5圖、第6圖之導光組件100c的功效。 FIG. 7 is a cross-sectional view of a light guiding assembly 100d according to an embodiment of the present invention. The light guiding assembly 100d includes a light guide plate 110a and a light source 120a. The difference from the embodiment of FIG. 6 is that the microstructure region 111a of the light guide plate 110a is located on the front surface 114a of the light guide plate 110a, and the light adjustment element 130 is located on the front surface 114a of the light guide plate 110a and covers the microstructure region 111a. With such a design, the light guiding component 100d can still have the functions of the light guiding component 100c of the aforementioned fifth and sixth figures.
第8圖繪示根據本發明一實施方式之導光組件100e的剖面圖。導光組件100e包含導光板110、光源120a與光調整元件130a。與第6圖實施方式不同的地方在於：光調整元件130a具有黏著層136與散光層139，且黏著層136位於散光層139與導光板110之間。在本實施方式中，微結構區111 位於導光板110的背面116，光調整元件130a位於背面116且覆蓋微結構區111。黏著層136之折射率與導光板110之折射率的差異可介於0.1至0.7的範圍。黏著層136可進一步提升導光板110中光的臨界角，讓小於臨界角的光線(例如光線L5)可折射穿過導光板110至黏著層136(例如形成光線L6)，進而被散光層139散射而霧化(例如形成多個光線L7)，使光調整元件130a與微結構區111右側之導光板110區域的亮度分佈均勻。在本實施方式中，散光層139可以為淺色(例如白色)，有助於散射與霧化光線。 FIG. 8 is a cross-sectional view of a light guiding assembly 100e according to an embodiment of the present invention. The light guide assembly 100e includes a light guide plate 110, a light source 120a, and a light adjustment element 130a. The difference from the embodiment of FIG. 6 is that the light adjusting element 130a has the adhesive layer 136 and the astigmatism layer 139, and the adhesive layer 136 is located between the astigmatism layer 139 and the light guide plate 110. In the present embodiment, the microstructure region 111 Located on the back side 116 of the light guide plate 110, the light adjustment element 130a is located on the back surface 116 and covers the microstructure region 111. The difference between the refractive index of the adhesive layer 136 and the refractive index of the light guide plate 110 may range from 0.1 to 0.7. The adhesive layer 136 can further raise the critical angle of light in the light guide plate 110, so that light smaller than the critical angle (for example, the light L5) can be refracted through the light guide plate 110 to the adhesive layer 136 (for example, forming the light L6), and then scattered by the astigmatism layer 139. The atomization (for example, forming a plurality of light rays L7) makes the light distribution of the light adjusting element 130a and the region of the light guide plate 110 on the right side of the microstructure region 111 uniform. In the present embodiment, the astigmatism layer 139 may be a light color (for example, white) to facilitate scattering and atomizing light.
第9圖繪示根據本發明一實施方式之導光組件100f的剖面圖。導光組件100f包含導光板110a與光源120a。與第8圖實施方式不同的地方在於：導光板110a的微結構區111a位於導光板110a的正面114a，且光調整元件130a位於導光板110a的正面114a且覆蓋微結構區111a。這樣的設計，導光組件100f仍可具有前述第8圖之導光組件100e的功效。 FIG. 9 is a cross-sectional view of a light guiding assembly 100f according to an embodiment of the present invention. The light guide assembly 100f includes a light guide plate 110a and a light source 120a. The difference from the embodiment of FIG. 8 is that the microstructure region 111a of the light guide plate 110a is located on the front surface 114a of the light guide plate 110a, and the light adjustment member 130a is located on the front surface 114a of the light guide plate 110a and covers the microstructure region 111a. With such a design, the light guiding assembly 100f can still have the efficacy of the light guiding assembly 100e of the aforementioned Fig. 8.
第10圖繪示根據本發明一實施方式之導光組件100g的俯視圖。導光組件100g包含導光板110b與光源120a、120b。與第5圖實施方式不同的地方在於：導光板110b之微結構區111b內的微結構所構成的輪廓為圓形。同時參考第11圖~第13圖，其分別繪示根據本發明不同實施方式之導光組件的俯視圖。與第10圖實施方式不同的地方在於：導光板之微結構區內的微結構所構成的輪廓分別可為橢圓形、三角形、梯形。 FIG. 10 is a top plan view of a light guiding assembly 100g according to an embodiment of the present invention. The light guide assembly 100g includes a light guide plate 110b and light sources 120a, 120b. The difference from the embodiment of Fig. 5 is that the microstructure formed by the microstructures in the microstructure region 111b of the light guide plate 110b is circular. Referring to FIG. 11 to FIG. 13 simultaneously, FIG. 11 is a top plan view of a light guiding assembly according to various embodiments of the present invention. The difference from the embodiment of FIG. 10 is that the microstructures formed by the microstructures in the microstructure region of the light guide plate may be elliptical, triangular or trapezoidal, respectively.
雖然本發明已以實施方式揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和 範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and those skilled in the art, without departing from the spirit of the invention, In the scope of the invention, the scope of the invention is defined by the scope of the appended claims.
100‧‧‧導光組件 100‧‧‧Light guiding components
102a、102b‧‧‧驅動元件 102a, 102b‧‧‧ drive components
110‧‧‧導光板 110‧‧‧Light guide plate
111‧‧‧微結構區 111‧‧‧Microstructured area
112‧‧‧入光面 112‧‧‧Into the glossy surface
114‧‧‧正面 114‧‧‧ positive
117‧‧‧可視區 117‧‧‧visible area
120a、120b‧‧‧光源 120a, 120b‧‧‧ light source
2-2‧‧‧線段 2-2‧‧‧ segments
d1‧‧‧距離 D1‧‧‧ distance
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| TW201122576A (en) * | 2009-12-25 | 2011-07-01 | Coretronic Corp | Light guide plate and backlight module |
| TW201617549A (en) * | 2014-11-12 | 2016-05-16 | 元太科技工業股份有限公司 | Light emitting module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201122576A (en) * | 2009-12-25 | 2011-07-01 | Coretronic Corp | Light guide plate and backlight module |
| TW201617549A (en) * | 2014-11-12 | 2016-05-16 | 元太科技工業股份有限公司 | Light emitting module and display device |
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