201037417201037417
.1TW 25582twf.doc/n 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種液晶顯示器，且特別是有關於— 種整體厚度較薄的液晶顯示器及其背光模組。 【先前技術】 發光二極體(Light emitting diode，LED)因具有反應速 度快(一般約為1〇9秒之間）、單色性佳、體積小、低耗電 量、低污染（無汞含量）、可靠度高以及製程上適於量產等 優點’因此也漸漸取代液晶顯示器的背光模組中，傳統的 冷陰極螢光燈(cold cathode fluorescence lamp, CCFL)的應 用。 ’ 圖1為習知一種具有光感測器的背光模組的示意圖。 睛參考圖1，因為需要調整背光模組中發光二極體的 色度’因此一般都將光感測器220配置在一單一的電路板 230上面，並且將設置光感測器22〇的電路板23〇配置在 導光板240之其中一出光側242的位置。如此，光感測器 220才此夠感測發光二極體21〇的色度，以即時調整液晶 顯不器的顯不品質。然而，因為電路板23〇的高度及光感 測器220會佔據背光模組内的配置空間，造成背光模組的 整體厚度無法有效下降。因此，對於現今液晶顯示器的發 展趨勢趨向於薄型化，此種光感測器的設置方式並不適用。 【發明内容】 本發明提供一種整體厚度較薄的背光模組。 本發明提供一種整體厚度較薄的液晶顯示器。 MZ1TW 25582twfd〇c/n.1TW 25582twf.doc/n VI. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display, and more particularly to a liquid crystal display having a thin overall thickness and a backlight module thereof. [Prior Art] Light emitting diodes (LEDs) have a fast response speed (generally about 1 to 9 seconds), good monochromaticity, small size, low power consumption, and low pollution (no mercury) The content), high reliability and the advantages of mass production in the process are therefore gradually replacing the application of the conventional cold cathode fluorescent lamp (CCFL) in the backlight module of the liquid crystal display. FIG. 1 is a schematic diagram of a conventional backlight module with a photo sensor. Referring to FIG. 1, since it is necessary to adjust the chromaticity of the light-emitting diodes in the backlight module, the light sensor 220 is generally disposed on a single circuit board 230, and the circuit of the photo sensor 22 is disposed. The plate 23 is disposed at a position of one of the light exiting sides 242 of the light guide plate 240. Thus, the photo sensor 220 can sense the chromaticity of the LED 21 , to instantly adjust the display quality of the LCD display. However, because the height of the circuit board 23 and the light sensor 220 occupy the configuration space in the backlight module, the overall thickness of the backlight module cannot be effectively reduced. Therefore, the trend of the development of liquid crystal displays tends to be thinner, and the arrangement of such photosensors is not applicable. SUMMARY OF THE INVENTION The present invention provides a backlight module having a thin overall thickness. The present invention provides a liquid crystal display having a thin overall thickness. MZ1TW 25582twfd〇c/n
O 〇 .201037417 本發明提出-種背光模組，其 極體模組、—導光板、一導光元件、—命王乂、_ 測器。發光二極體模組配置、—电路板以及一光感 架内，並位於發而導光板配置於框 架内，其餘部分暴露於該_外。位於該框 =，其中入光面與導光板連接，：接:由 板上，並二=二:=旁’而光感測器配置於電路 在本發明之一實施例中， 二。 一背軛，苴由北4 处之框罙包括一本體以及 月板板位於本體下。此外，本 而導光元件穿設於開槽。 /、有開礼， 電路ΐ本發月之只施例中，上述之電路板為一面板控制 ίίΓ之—實施例中，上述之導光元件為光纖。 外以=明之—實施例巾，上述之背光模組更包括配置 =兀：及導光板之間的—介質，其中介質的折射率介 於V光兀件的折射率及導光板的折射率之間。 在本發明之-實施例中，上述之背光模組更包括—配 置於框架上的光學膜片’其中光學膜片為增光片 或擴散片。 乃 本發明另提出-種液晶顯示器，其包括一液晶顯示面 板以及-上述之背絲組’且#光模組位於液晶顯示面板 的一侧。 5 .TW 25582twf.doc/n 201037417 本發明將光感測器配置於電路板上，並且利 件將導光板射出的光導至光感測器，因此光感測器可感： 發光二極體模_輝度與色度。如此，域卿的配置位 J更，性，有利於液晶顯示器中的空間利用，進而降低 背光模組及液晶顯示器的整體厚度。 一 為讓本發明之上述特徵和優點能更明顯易懂，下文 舉較佳實施例，並配合所附圖式，作詳細說明如下。· 【實施方式】 圖2A為本發明一實施例之液晶顯示器的示意圖、圖 触及圖2C分別為圖2A之液晶顯示器不同區域的局部立 歧不意圖’而圖3為將圖2C^A_A，截面示意圖。其中， 圖為圖2A之液晶顯示器的右上角a的放大示意圖， =圖2C為圖2A之液晶顯示n右下側B的放大示意圖。 同日寺參考圖2A、2B、2C及圖3，本實施例之背絲組 1 匕括一框架110、一發光二極體模組120、—導光板 一導光元件130、一電路板140以及一光感測器150。 I光—極體模組12〇及導光板wo皆配置於框架I〗。内， ^^發光二極體模組12〇位於導光板16〇旁。導光元件13〇 鐾冲分位於框架11〇内，其於部分暴露於框架11〇外。此 入光元件130具有一入光面132以及一出光面134，其中 =光面132與導光板160連接。電路板14〇配置於框架11〇 二，而光感測器150配置在電路板14〇上，並位於導光元 的出光面134旁，其中光感測器150藉由導光元件 以接收由導光板160射出的光線，以感測發光二極體 .201037417O 〇 .201037417 The invention proposes a backlight module, which is a polar body module, a light guide plate, a light guiding component, a singer, a _ detector. The LED module configuration, the circuit board and a light sensor frame are located in the frame, and the light guide plate is disposed in the frame, and the remaining portion is exposed to the outside. Located in the frame =, wherein the light incident surface is connected to the light guide plate, the connection is: on the board, and the second=two:=side' and the light sensor is disposed in the circuit. In one embodiment of the present invention, two. A back yoke, the frame of the north 4 includes a body and the moon board is located under the body. Further, the light guiding member is disposed in the slot. In the embodiment of the circuit, the above-mentioned circuit board is controlled by a panel. In the embodiment, the light guiding element is an optical fiber. In the embodiment, the backlight module further includes a medium between the light source and the light guide plate, wherein the refractive index of the medium is between the refractive index of the V light member and the refractive index of the light guide plate. between. In an embodiment of the invention, the backlight module further includes an optical film disposed on the frame, wherein the optical film is a light-increasing film or a diffusion sheet. The present invention further provides a liquid crystal display comprising a liquid crystal display panel and the above-mentioned backing wire group and wherein the optical module is located on one side of the liquid crystal display panel. 5. TW 25582twf.doc/n 201037417 The invention arranges the light sensor on the circuit board, and the light guides the light emitted from the light guide plate to the light sensor, so the light sensor can sense: the light emitting diode mold _ luminance and chromaticity. In this way, the domain configuration of J is more flexible, which is beneficial to the space utilization in the liquid crystal display, thereby reducing the overall thickness of the backlight module and the liquid crystal display. The above described features and advantages of the present invention will become more apparent from the following description. [Embodiment] FIG. 2A is a schematic diagram of a liquid crystal display according to an embodiment of the present invention, and FIG. 2C is a partial elevational dissimilarity of different regions of the liquid crystal display of FIG. 2A, respectively, and FIG. 3 is a cross-section of FIG. 2C^A_A. schematic diagram. 2A is an enlarged schematic view of the upper right corner a of the liquid crystal display of FIG. 2A, and FIG. 2C is an enlarged schematic view of the lower right side B of the liquid crystal display n of FIG. 2A. Referring to FIG. 2A, FIG. 2B, FIG. 2C and FIG. 3, the back wire group 1 of the present embodiment includes a frame 110, a light emitting diode module 120, a light guide plate-light guiding element 130, a circuit board 140, and A light sensor 150. The I-polar body module 12〇 and the light guide plate are all arranged in the frame I. The ^2 LED module 12 is located beside the light guide plate 16〇. The light guiding element 13 鐾 is located within the frame 11〇, which is partially exposed to the outside of the frame 11〇. The light-receiving element 130 has a light-incident surface 132 and a light-emitting surface 134, wherein the light-emitting surface 132 is connected to the light guide plate 160. The circuit board 14 is disposed on the frame 11 , and the photo sensor 150 is disposed on the circuit board 14 , and is located beside the light emitting surface 134 of the light guide element. The light sensor 150 is received by the light guiding element. Light emitted by the light guide plate 160 to sense the light emitting diode. 201037417
lviZITW 25582twf.d〇c/n 模組120的輝度及色度。 承上述，導光元件130可以是沿著框架11〇設置，且 本實施例之導光元件n〇為光纖。為了能夠固定導光元件 130 ’可以在本體112設置開槽116，並將導光元件⑽配 設於開槽116中。 當開啟背光模組1〇〇時，發光二極體模組π〇會發光， 且發光二極賴組120的光會進人導光板⑽，而因為導 〇 光元件130的入光面132連接導光板160，所以導光元件 130會接收由導光板16〇射出的光。值得一提的是，導光 板160以及‘光元件130的入光面ι32之間有一介質丨8〇, 其中介質18G的折料介於導光板⑽的折射率以及導光 元件130的折射率之間，以使由導光板16〇出射的光能夠 良好地傳遞至導光元们3〇巾，避免全反射的情形發生。 另外，光線在導光元件η〇中傳遞時，並不會有光強度的 哀退’所以位於出光面134旁的光感測器15〇便能夠感測 由導光兀件130之出光面134出射的光線的準確色度及輝 〇 纟’並且將感·回傳至控㈣紐&⑽的光源控制電 路板(未繪示）’以適時地調整背光模組1〇〇的色度及輝度。 此外，本實施例並未限制導光元件13〇的長度，可視 實際需求決定。以本實施例而言，導光元件13〇可以拉至 導光板160相對遠離發光二極體模組13〇的那一側，使其 ^光面132連接導光板160。如此，可以偵測發光二極體 ^組130的各色色光是否在導光板16〇内均勻混光，同時 還可以偵測導光板160於遠離發光二極體模組13〇處的亮 25582twf.doc/n 201037417 w —— Λ iw 度是否不足而影響顯示效果，並且適時地將偵測結果回 饋’使光源控制電路板適時地調整發光二極體模組的 亮度。 v 特別的是，由於本實施例是於背光模組1〇〇中設置導 光兀件130以將導光板160出射的光導至光感測器15〇， 所以導光元件130及光感測器15〇的位置便可以依照需求 而變更，如本實施例直接將光感測器15〇設置在液晶'顯示 裔300原有的電路板丨4〇(面板控制電路板)上。與習知相 較，可減少習知中為了配置光感測器而另外設置的電路 板，且可有效地減少背光模組1〇〇之整體厚度。 由上述可知，藉由導光元件13〇，光感測器15〇的設 置位置可以依照*計上的實際需求而變更，也因此背光模 組100的設計也更具有彈性。 、 接著清繼縯參考圖3，為了提升背光模組100的光學 口口貝+，因此背光模組100更包括一配置於框架11〇上的光 學膜片170，而此光學膜片17〇可以是增光片、稜鏡片或 、將此为光模組100配置在一液晶顯示面板200之下， ，組立成-液晶顯示器獨，由於背光模組⑽能夠自動 調权其色度及輝度，因此液晶顯示器，可以具有 顯示品質。 土在另未繪不的實施例中，導光元件130可以直接在 =發光二極體她12Q處便與導光板⑽相連接，以節 省光元件130的材料成本。導光元件13〇與導光板⑽ 201037417,柳 25582twf.doc/n 的連，方式可參考圖2Β，便不㈣示及詳加說明。 在背ΐΐ所述，在本發明之背光模組中，將光感測器配置 先模_有的電路板上’並賴料光轉將從 合:”光感測器處，不但可減少習知中需另外配 感測器而配置在出光侧的電路板，同時進而減少背光 、、且的整體厚度，也因為光感測器的位置配置更具有彈 Ο 因此能夠更為有效利用背光模組内的空間。此外，由 於光線在導光元件中傳遞並不會有光強度衰退的情形發 生’因此光感測器仍能準確地感測發光二極體模組的色^ 及輝度’並使背光模組適時地調整其色度及輝度。因此， 使用此背光模組的液晶顯示器可具有良好的顯示品質。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限疋本發明’任何所屬技術領域中具有通常知識者，在不 脫離本發明之精神和範圍内’當可作些許之更動與潤飾，lviZITW 25582twf.d〇c/n The luminance and chromaticity of the module 120. In the above, the light guiding element 130 may be disposed along the frame 11A, and the light guiding element n〇 of the embodiment is an optical fiber. In order to be able to fix the light guiding element 130', a groove 116 may be provided in the body 112, and the light guiding element (10) may be disposed in the slot 116. When the backlight module 1 is turned on, the light emitting diode module π 〇 emits light, and the light of the light emitting diode 120 enters the light guide plate (10), and the light incident surface 132 of the light guiding device 130 is connected. Since the light guide plate 160 is received, the light guiding element 130 receives the light emitted by the light guide plate 16. It is worth mentioning that there is a dielectric 丨8〇 between the light guide plate 160 and the light incident surface ι32 of the light element 130, wherein the refractive index of the medium 18G is between the refractive index of the light guide plate (10) and the refractive index of the light guiding element 130. In order to prevent the total reflection from occurring, the light emitted from the light guide plate 16 can be transmitted to the light guides 3 well. In addition, when the light is transmitted through the light guiding element η〇, there is no light intensity slamming. Therefore, the light sensor 15 located beside the light emitting surface 134 can sense the light emitting surface 134 of the light guiding element 130. The accurate chromaticity and brilliance of the emitted light is transmitted to the light source control circuit board (not shown) of the control (4) New & (10) to adjust the chromaticity of the backlight module 1 适 and Brightness. In addition, this embodiment does not limit the length of the light guiding element 13〇, which can be determined according to actual needs. In this embodiment, the light guiding element 13 can be pulled to the side of the light guide plate 160 relatively far from the light emitting diode module 13A, so that the light surface 132 is connected to the light guiding plate 160. In this way, it is possible to detect whether the color lights of the light-emitting diode group 130 are evenly mixed in the light guide plate 16〇, and also detect the brightness of the light guide plate 160 away from the light-emitting diode module 13〇25582twf.doc /n 201037417 w —— Λ The iw degree is insufficient to affect the display effect, and the detection result is fed back in time to enable the light source control circuit board to adjust the brightness of the LED module in a timely manner. In particular, in this embodiment, the light guiding element 130 is disposed in the backlight module 1 to guide the light emitted from the light guiding plate 160 to the photo sensor 15 , so the light guiding element 130 and the light sensor The position of 15 便 can be changed according to requirements. For example, the photo sensor 15 直接 is directly disposed on the original circuit board 面板 4 〇 (panel control circuit board) of the liquid crystal display 300. Compared with the conventional one, the circuit board additionally provided for arranging the photo sensor can be reduced, and the overall thickness of the backlight module 1 can be effectively reduced. As can be seen from the above, the position of the photosensor 15A can be changed by the light guide element 13A, and the design of the backlight module 100 is also more flexible. Referring to FIG. 3, in order to enhance the optical port of the backlight module 100, the backlight module 100 further includes an optical film 170 disposed on the frame 11〇, and the optical film 17 can be The light module 100 is disposed under a liquid crystal display panel 200, and is assembled as a liquid crystal display. Since the backlight module (10) can automatically adjust its chromaticity and luminance, the liquid crystal The display can have display quality. In an otherwise unillustrated embodiment, the light guiding element 130 can be directly connected to the light guide plate (10) at the 12Q of the light emitting diode to save the material cost of the light element 130. The light guiding element 13 is connected to the light guide plate (10) 201037417, Liu 25582twf.doc/n, and the method can be referred to FIG. 2, and it is not shown in detail. In the backlight module of the present invention, in the backlight module of the present invention, the light sensor is configured on the first mode _ some of the circuit board and the light is transferred from the light sensor to the light sensor, which can reduce the In addition, it is necessary to provide a sensor on the light-emitting side of the circuit board, and at the same time reduce the overall thickness of the backlight, and also because the position of the light sensor is more elastic, so that the backlight module can be more effectively utilized. In addition, since the light is transmitted through the light guiding element, there is no case where the light intensity is degraded. Therefore, the light sensor can accurately sense the color and luminance of the light emitting diode module and The backlight module adjusts its chromaticity and luminance in a timely manner. Therefore, the liquid crystal display using the backlight module can have good display quality. Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. 'Anyone of ordinary skill in the art can make a few changes and refinements without departing from the spirit and scope of the invention.
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。 【圖式簡單說明】 圖1為習知一種具有光感測器的背光模組的示意圖。 圖2Α為本發明一實施例之液晶顯示器的示意圖。 圖2Β為圖2Α之液晶顯示器的右上角Α的放大示音 圖2C為圖2A之液晶顯示器右下側B的放大示音圖 圖3為將圖2C之A-A’截面示意圖。 9 201037417irw 25582twf.doc/n 【主要元件符號說明】 100 :背光模組 110 :框架 112 :本體 114 :背板 116 :開槽 120、210 :發光二極體模組 130 :導光元件 132 :入光面 134 :出光面 140、230 :電路板 150、220 :光感測器 160 :導光板 170 :光學膜片 200 :液晶顯示面板 242 :出光側 300 .液晶顯不斋Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional backlight module having a photo sensor. 2 is a schematic view of a liquid crystal display according to an embodiment of the present invention. 2 is an enlarged view of the upper right corner of the liquid crystal display of FIG. 2A. FIG. 2C is an enlarged view of the lower right side B of the liquid crystal display of FIG. 2A. FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 2C. 9 201037417irw 25582twf.doc/n [Main component symbol description] 100: backlight module 110: frame 112: body 114: back plate 116: slot 120, 210: light emitting diode module 130: light guiding element 132: Smooth surface 134: light-emitting surface 140, 230: circuit board 150, 220: light sensor 160: light guide plate 170: optical film 200: liquid crystal display panel 242: light-emitting side 300. liquid crystal display is not fast