TWM484123U - Backlight module - Google Patents

Description

背光模組Backlight module

本新型為有關一種背光模組，尤指一種側光式背光模組。The present invention relates to a backlight module, and more particularly to an edge-lit backlight module.

液晶顯示器主要可分為液晶顯示面板以及背光模組兩大部分，液晶顯示面板為用以提供液晶顯示器顯示的功能，其本身並不具發光的特性，而必需由該背光模組來提供光源，才得以達到顯示的效果。The liquid crystal display can be mainly divided into two parts: a liquid crystal display panel and a backlight module. The liquid crystal display panel is a function for providing a display of the liquid crystal display, and has no illuminating characteristics by itself, and the backlight module is required to provide a light source. Can achieve the effect of the display.

一般的背光模組結構可分為直下式背光模組與側光式背光模組，在側光式背光模組中，主要包含有光源、導光板、反射板以及擴散板，導光板為用以引導光線的傳輸方向，使光線能從導光板均勻射出，反射板為設置於該導光板的底面，其將由導光板底面射出的光線再次反射入該導光板內，增加光線的使用效率，擴散板為設置於導光板相對底面的頂面，令由導光板的頂面射出的光線產生更多的折射、反射與散射現象，使得光線擴散而更加均勻，進而提高液晶顯示器的輝度與均勻性。The general backlight module structure can be divided into a direct type backlight module and an edge light type backlight module. In the edge light type backlight module, the light source, the light guide plate, the reflection plate and the diffusion plate are mainly included, and the light guide plate is used for The direction of light transmission is guided to enable light to be uniformly emitted from the light guide plate. The reflector is disposed on the bottom surface of the light guide plate, and the light emitted from the bottom surface of the light guide plate is reflected into the light guide plate again to increase the use efficiency of the light. In order to be disposed on the top surface of the light guide plate opposite to the bottom surface, the light emitted from the top surface of the light guide plate generates more refraction, reflection and scattering phenomenon, so that the light is diffused and more uniform, thereby improving the brightness and uniformity of the liquid crystal display.

例如在中華民國發明專利公告第I315428號中，即揭示一種液晶顯示器之背光模組，包括一燈管、一導光板、一擴散板及一稜鏡片，該燈管係用以產生一光線，該導光板係配置於該燈管之一側，用以引導該光線，該擴散板及該稜鏡片皆係配置於該導光板上，用以加強該導光板輸出之光線的效率。其中，該稜鏡片包括一主體及數個突出部，而每一個突出部具有一位於主體上之斜面，藉以預防光線效率衰減並確保寬視角。For example, in the Republic of China Invention Patent Publication No. I315428, a backlight module of a liquid crystal display includes a light tube, a light guide plate, a diffusion plate and a cymbal plate for generating a light. The light guide plate is disposed on one side of the light tube for guiding the light, and the diffusion plate and the slab are disposed on the light guide plate for enhancing the efficiency of the light output by the light guide plate. Wherein, the cymbal includes a main body and a plurality of protrusions, and each of the protrusions has a slope on the main body to prevent light efficiency degradation and ensure a wide viewing angle.

然而，在習知技術中，該擴散板上通常還會塗佈複數條狀的擴散膠，以將該光線進一步擴散，提高該背光模組發光的均勻度，不過該擴散膠會額外增加製造成本，且該均勻度仍有改善的空間。However, in the prior art, the diffusion plate is usually coated with a plurality of strips of diffusion glue to further diffuse the light to improve the uniformity of illumination of the backlight module, but the diffusion adhesive additionally increases the manufacturing cost. And there is still room for improvement in this uniformity.

本新型的主要目的，在於解決習知於背光模組的該擴散板塗佈複數條狀擴散膠的技術，具有額外增加製造成本的問題，本新型的另一個目的，在於進一步改善發光的均勻度。The main purpose of the present invention is to solve the problem that the diffusion plate of the backlight module is coated with a plurality of strip diffusion adhesives, which has the problem of additionally increasing the manufacturing cost. Another object of the present invention is to further improve the uniformity of illumination. .

為達上述目的，本新型提供一種背光模組，包含有一光源組件、一導光板、一擴散片、一反光片以及複數個折射點。該光源組件發出一光線；該導光板與該光源組件光學連接，並包含一導入該光線的入光端、一導出該光線的出光面以及一導出該光線並與該出光面相對的透光面；該擴散片面對該出光面設置並擴散由該出光面導出的該光線；該反光片面對該透光面設置並反射由該透光面導出的該光線；而該折射點凸設於該擴散片，並分佈於該擴散片上，令由該出光面導出的該光線於該折射點上形成一發散光源。To achieve the above objective, the present invention provides a backlight module including a light source assembly, a light guide plate, a diffusion sheet, a reflective sheet, and a plurality of refraction points. The light source assembly emits a light; the light guide plate is optically coupled to the light source assembly, and includes a light incident end that introduces the light, a light exiting surface that derives the light, and a light transmitting surface that leads the light and is opposite to the light emitting surface The diffusing surface is disposed opposite to the light emitting surface and diffuses the light emitted from the light emitting surface; the reflective sheet is disposed facing the light transmitting surface and reflects the light emitted by the light transmitting surface; and the refractive point is convexly disposed on The diffusion sheet is distributed on the diffusion sheet such that the light guided by the light exit surface forms a divergent light source at the refraction point.

如此一來，本新型藉由將該折射點分佈於該擴散片上，進一步將該光線於該折射點上形成該發散光源，不僅以該折射點大幅減少擴散膠的使用量，降低製造成本，還得以形成該發散光源，提升該背光模組發光的均勻度。In this way, the present invention distributes the refraction point on the diffusion sheet, and further forms the divergent light source on the refraction point, thereby not only greatly reducing the use amount of the diffusion gel by the refraction point, but also reducing the manufacturing cost. The divergent light source is formed to improve the uniformity of illumination of the backlight module.

10‧‧‧光源組件10‧‧‧Light source components

11‧‧‧燈罩11‧‧‧shade

12‧‧‧燈源12‧‧‧Light source

13‧‧‧光線13‧‧‧Light

131‧‧‧發散光源131‧‧‧Divergent light source

20‧‧‧導光板20‧‧‧Light guide

21‧‧‧入光端21‧‧‧Into the light end

22‧‧‧出光面22‧‧‧Glossy

23‧‧‧透光面23‧‧‧Transparent surface

30‧‧‧擴散片30‧‧‧Diffuser

31‧‧‧向光面31‧‧‧Glossy

40‧‧‧反光片40‧‧‧Reflecting film

50‧‧‧折射點50‧‧‧Reflection point

61‧‧‧第一直線61‧‧‧First straight line

62‧‧‧第二直線62‧‧‧Second straight line

63‧‧‧第三直線63‧‧‧ third straight line

64‧‧‧第四直線64‧‧‧fourth straight line

圖1A，為本新型第一實施例的結構示意圖。Fig. 1A is a schematic view showing the structure of a first embodiment of the present invention.

圖1B，為『圖1A』的局部放大圖。Fig. 1B is a partial enlarged view of Fig. 1A.

圖2，為本新型第一實施例折射點於擴散片上的分佈位置示意圖。Fig. 2 is a schematic view showing the distribution position of the refractive point on the diffusion sheet of the first embodiment of the present invention.

圖3，為本新型第二實施例折射點於擴散片上的分佈位置示意圖。Fig. 3 is a schematic view showing the distribution position of the refractive point on the diffusion sheet of the second embodiment of the present invention.

有關本新型的詳細說明及技術內容，現就配合圖式說明如下：The detailed description and technical content of this new model are described below with the following diagram:

請搭配參閱『圖1A』及『圖1B』所示，『圖1A』為本新型第一實施例的結構示意圖，『圖1B』為『圖1A』的局部放大圖，如圖所示：本新型為一種背光模組，包含有一光源組件10、一導光板20、一擴散片30、一反光片40以及複數個折射點50。該光源組件10發出一光線13，在此實施例中，該光源組件10包含一燈罩11以及一燈源12，該燈罩11具有一容置空間以及一與該容置空間連通的開口，該燈源12設置於該容置空間中，並朝向該開口發出該光線13，該燈源12在此可為冷陰極燈管(Cold Cathode Fluorescent Lamp，CCFL)或是發光二極體(Light-Emitting Diode，LED)。Please refer to "FIG. 1A" and "FIG. 1B", and FIG. 1A is a schematic structural view of the first embodiment of the present invention. FIG. 1B is a partial enlarged view of FIG. 1A, as shown in the figure: The invention is a backlight module comprising a light source assembly 10, a light guide plate 20, a diffusion sheet 30, a retroreflective sheet 40, and a plurality of refraction points 50. The light source assembly 10 emits a light 13 . In this embodiment, the light source assembly 10 includes a lamp cover 11 and a light source 12 . The light cover 11 has an accommodating space and an opening communicating with the accommodating space. The source 12 is disposed in the accommodating space and emits the light 13 toward the opening. The light source 12 can be a Cold Cathode Fluorescent Lamp (CCFL) or a Light-Emitting Diode. ,LED).

該導光板20與該光源組件10光學連接，並包含一入光端21、一出光面22以及一透光面23，該入光端21與該開口相鄰設置，用以導入該燈源12所發出的該光線13，該出光面22位於該導光板20的一側而與該入光端21相鄰，用以導出該光線13，該透光面23位於該導光板20的另一側，而與該出光面22相對，亦可導出該光線13，該擴散片30面對該出光面22設置，以擴散由該出光面22導出的該光線13，至於該反光片40則面對該透光面23設置，用以反射由該透光面23導出的該光線13。The light guide plate 20 is optically connected to the light source assembly 10 and includes an light-incident end 21, a light-emitting surface 22 and a light-transmissive surface 23. The light-incident end 21 is disposed adjacent to the opening for introducing the light source 12 The light ray 13 is disposed on a side of the light guide plate 20 adjacent to the light incident end 21 for deriving the light ray 13 on the other side of the light guide plate 20 The light ray 13 is also disposed opposite to the light-emitting surface 22, and the diffusion sheet 30 is disposed facing the light-emitting surface 22 to diffuse the light ray 13 derived from the light-emitting surface 22, and the reflective sheet 40 faces the light-emitting surface The light transmissive surface 23 is disposed to reflect the light ray 13 derived from the light transmissive surface 23.

該折射點50凸設於該擴散片30，並分佈於該擴散片30上，在此實施例中，該擴散片30具有一面對該出光面22的向光面31，該折射點50為設置於該向光面31上，令由該出光面22導出的該光線13於射向該擴散片30的該向光面31時，能直接於該折射點50上形成一發散光源131，再進入該擴散片30之中，進而提升於該擴散片30的光學擴散效果，提高該背光模組發光的均勻度。The refraction point 50 is disposed on the diffusion sheet 30 and is distributed on the diffusion sheet 30. In this embodiment, the diffusion sheet 30 has a light-emitting surface 31 on the light-emitting surface 22, and the refraction point 50 is The light ray 13 led out from the light-emitting surface 22 is disposed on the light-emitting surface 31 of the diffusion sheet 30, and a divergent light source 131 can be formed directly on the refractive point 50. The diffusion sheet 30 is inserted into the diffusion sheet 30 to enhance the optical diffusion effect of the diffusion sheet 30, thereby improving the uniformity of illumination of the backlight module.

另外，尚需說明的是，該折射點50的形狀、尺寸大小以及設置間距，可搭配該擴散片30的尺寸大小而調整，以達到一較佳的光學擴散效果。例如，在本實施例中，以該折射點50為圓形為舉例說明，單一個該折射點50可具有一介於0.12至0.15mm的直徑，相鄰的該折射點50之間則具有介於0.05至0.3mm的間距，但並不以此為該折射點50的形狀、尺寸大小以及設置間距的限制。In addition, it should be noted that the shape, size, and spacing of the refractive dots 50 can be adjusted in accordance with the size of the diffusion sheet 30 to achieve a better optical diffusion effect. For example, in the embodiment, taking the refraction point 50 as a circular shape, a single one of the refraction points 50 may have a diameter of 0.12 to 0.15 mm, and the adjacent refraction point 50 has a A pitch of 0.05 to 0.3 mm, but not as a limitation of the shape, size, and spacing of the refractive point 50.

接著，請分別參閱『圖2』及『圖3』所示，『圖2』為本新型第一實施例折射點於擴散片上的分佈位置示意圖，『圖3』為本新型第二實施例折射點於擴散片上的分佈位置示意圖，在第一實施例中，如『圖2』所示，一部分該折射點50於該擴散片30上沿一第一直線61排列，一部分該折射點50於該擴散片30上沿一第二直線62排列，該第二直線62為與該第一直線61相鄰且平行，位於該第一直線61上的該折射點50與位於該第二直線62上的該折射點50之間為相互對齊；在第二實施例中，如『圖3』所示，一部分該折射點50於該擴散片30上亦沿一第三直線63排列，一部分該折射點50於該擴散片30上沿一第四直線64排列，該第四直線64為與該第三直線63相鄰且平行，相較於第一實施例，第二實施例的差異在於位於該第三直線63上的該折射點50與位於該第四直線64上的該折射點50之間為相互錯位，要說明的是，上述兩種排列方式，皆可於該擴散片30達到良好的光學擴散效果，但不以此為排列位置的限制。Next, please refer to FIG. 2 and FIG. 3 respectively. FIG. 2 is a schematic view showing the distribution position of the refractive index on the diffusion sheet according to the first embodiment of the present invention, and FIG. 3 is a refraction of the second embodiment of the present invention. A schematic diagram of a distribution position on the diffusion sheet. In the first embodiment, as shown in FIG. 2, a part of the refraction point 50 is arranged on the diffusion sheet 30 along a first line 61, and a part of the refraction point 50 is diffused. The sheet 30 is arranged along a second line 62 which is adjacent to and parallel with the first line 61. The refraction point 50 on the first line 61 and the refraction point on the second line 62 50 is mutually aligned; in the second embodiment, as shown in FIG. 3, a part of the refraction point 50 is also arranged on the diffusion sheet 30 along a third line 63, and a part of the refraction point 50 is diffused. The sheet 30 is arranged along a fourth line 64 which is adjacent to and parallel with the third line 63. The second embodiment differs from the first embodiment in that the third line 63 is located on the third line 63. The point of refraction 50 between the point of refraction 50 and the point of refraction 50 on the fourth line 64 is Mutual offset, to show that the above two arrangements, can be on the diffusion sheet 30 to achieve good optical diffusion effect, but not limited to the arrangement position.

綜上所述，由於本新型藉由將該折射點分佈於該擴散片上，進一步將該光線於該折射點上形成該發散光源，據此，相較習知使用條狀的該擴散膠，可減少該擴散膠35%以上的使用量，降低製造成本，另外，所形成的該發散光源，提升該背光模組15%以上的發光均勻度，因此本新型極具進步性及符合申請新型專利的要件，爰依法提出申請，祈 鈞局早日賜准專利，實感德便。In summary, since the present invention distributes the refraction point on the diffusion sheet, the light is further formed on the refraction point to form the divergent light source. Accordingly, the strip-shaped diffusion adhesive can be used. The use amount of the diffusion adhesive is reduced by more than 35%, and the manufacturing cost is reduced. In addition, the divergent light source formed improves the uniformity of illumination of the backlight module by more than 15%, so the novel is highly progressive and conforms to the application for a new patent. The essentials, the application of the law, the praying office to grant the patent as soon as possible, the real sense of virtue.

以上已將本新型做一詳細說明，惟以上所述者，僅爲本新型的一較佳實施例而已，當不能限定本新型實施的範圍。即凡依本新型申請範圍所作的均等變化與修飾等，皆應仍屬本新型的專利涵蓋範圍內。The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited. That is, the equal changes and modifications made in accordance with the scope of this new application shall remain within the scope of the patent of this new type.

10‧‧‧光源組件 10‧‧‧Light source components

11‧‧‧燈罩 11‧‧‧shade

12‧‧‧燈源 12‧‧‧Light source

13‧‧‧光線 13‧‧‧Light

20‧‧‧導光板 20‧‧‧Light guide

21‧‧‧入光端 21‧‧‧Into the light end

22‧‧‧出光面 22‧‧‧Glossy

23‧‧‧透光面 23‧‧‧Transparent surface

30‧‧‧擴散片 30‧‧‧Diffuser

31‧‧‧向光面 31‧‧‧Glossy

40‧‧‧反光片 40‧‧‧Reflecting film

50‧‧‧折射點 50‧‧‧Reflection point

Claims (6)

【第1項】[Item 1] 一種背光模組，包含有：
一發出一光線的光源組件；
一與該光源組件光學連接的導光板，該導光板包含一導入該光線的入光端、一導出該光線的出光面以及一導出該光線並與該出光面相對的透光面；
一面對該出光面設置並擴散由該出光面導出的該光線的擴散片；
一面對該透光面設置並反射由該透光面導出的該光線的反光片；以及
複數個凸設於該擴散片的折射點，該折射點分佈於該擴散片上，令由該出光面導出的該光線於該折射點上形成一發散光源。A backlight module comprising:
a light source assembly that emits a light;
a light guide plate optically connected to the light source assembly, the light guide plate includes a light incident end for introducing the light, a light exiting surface for guiding the light, and a light transmitting surface for guiding the light and facing the light emitting surface;
a diffusing sheet that is disposed on the light-emitting surface and diffuses the light emitted from the light-emitting surface;
a reflective sheet disposed on the light transmissive surface and reflecting the light beam derived from the light transmissive surface; and a plurality of refraction points protruding from the diffusing surface, the refraction point being distributed on the diffusing sheet, and the light emitting surface is The derived light forms a divergent light source at the point of refraction. 【第2項】[Item 2] 如申請專利範圍第1項所述的背光模組，其中該光源組件包含一燈罩以及一燈源，該燈罩具有一容置空間以及一與該容置空間連通並朝向該入光端的開口，該燈源設置於該容置空間並朝向該開口發出該光線。The backlight module of claim 1, wherein the light source assembly comprises a lamp cover and a light source, the lamp cover has an accommodating space and an opening communicating with the accommodating space and facing the light incident end, The light source is disposed in the accommodating space and emits the light toward the opening. 【第3項】[Item 3] 如申請專利範圍第1項所述的背光模組，其中該擴散片具有一面對該出光面的向光面，該折射點設置於該向光面上。The backlight module of claim 1, wherein the diffusion sheet has a light-facing surface facing the light-emitting surface, and the refractive point is disposed on the light-facing surface. 【第4項】[Item 4] 如申請專利範圍第1項所述的背光模組，其中該折射點為圓形，單一個該折射點具有一介於0.12至0.15mm的直徑，相鄰的該折射點之間具有介於0.05至0.3mm的間距。The backlight module of claim 1, wherein the refraction point is circular, and the single refraction point has a diameter of 0.12 to 0.15 mm, and the adjacent refraction point has a range of 0.05 to 0.3mm pitch. 【第5項】[Item 5] 如申請專利範圍第1項所述的背光模組，其中一部分該折射點於該擴散片上沿一第一直線排列，一部分該折射點於該擴散片上沿一與該第一直線相鄰且平行的第二直線排列，且位於該第一直線上的該折射點與位於該第二直線上的該折射點之間為相互對齊。The backlight module of claim 1, wherein a part of the refraction point is arranged along the first straight line on the diffusion sheet, and a part of the refraction point is on the diffusion sheet along a second parallel and parallel with the first line. The lines are aligned, and the point of refraction located on the first line and the point of refraction located on the second line are aligned with each other. 【第6項】[Item 6] 如申請專利範圍第1項所述的背光模組，其中一部分該折射點於該擴散片上沿一第三直線排列，一部分該折射點於該擴散片上沿一與該第三直線相鄰且平行的第四直線排列，且位於該第三直線上的該折射點與位於該第四直線上的該折射點之間為相互錯位。The backlight module of claim 1, wherein a part of the refraction point is arranged along a third line on the diffusion sheet, and a part of the refraction point is adjacent to the third line and adjacent to the diffusion line. The fourth straight line is arranged, and the refraction point on the third line and the refraction point on the fourth line are mutually misaligned.