200835973 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種平面顯示裝置及發光單元，特別關 於一種液晶顯示裝置及發光單元。 【先前技術】 隨著電子科技的進步，尤其在曰常生活中隨身電子產 品的盛行’對於輕薄短小、耗電量低的顯示裝置之需求係 曰益增加。其中，液晶顯示裝置（Liquid crystal Display Apparatus，LCD Apparatus)以其耗電量低、發熱量少、重 量輕、以及非輻射性等等優點，早已被使用於各式各樣的 電子產品中，並且已逐漸地取代傳統的陰極射線管顯示裝 置（Cold Cathode Ray Tube Display，CRT Display )。 請參照圖1，其係為一種習知之液晶顯示裝置1主要 係包括一背光源11、一第一偏光板12、一驅動基板13、 一液晶層14、一彩色濾光基板15以及一第二偏光板16。 其中，驅動基板13上設置有一晝素電極131，彩色濾光基 板15上設置有一共通電極151，共通電極151與晝素電極 131係對應設置。背光源11所發光之光線經過第一偏光板 12選擇，讓一第一預定方向之光線通過夾有液晶層14於 其間之該等基板13、15，藉由驅動液晶層14内液晶分子 141與否，改變液晶分子141之排列方式’來控制光線是 否通過並抵達第二偏光板16,以讓一第二預定方向的光線 通過。而設置於液晶層14 一側之彩色濾光基板15上的彩 5 200835973 色濾光片152係用以過濾光線，並利用人眼視覺暫留的現 象’使光線在分別通過彩色濾光片152上之構成全彩的三 原色紅(R)、綠（G)、藍(B)晝素後，人眼即可獲得彩色晝面。 傳統上，主要係以冷陰極螢光燈（C〇id Cathode Fluorescent Lamp, CCFL )來作為液晶顯示裝置χ之背光源 11 °如圖2所示，習知技術之冷陰極螢光燈2〇係包含一 玻璃管21，玻璃管21内之二端各具有一電極22，玻璃管 21之内壁則均勻塗佈著螢光層（Phosphor Layer) 23。玻 璃管21内係充填有水銀蒸氣及混合鈍氣（例如··氙、氬 之混合氣體）’作為放電介質（Discharge Medium )。點亮 時，電極22經由導線221連接電源而釋出電子，電子經 電場加速碰撞玻璃管21内部之放電介質，使得放電介質 處於激態’然後釋出紫外光以回到基態。其中，放電介質 所釋放之紫外光則會被玻璃管21内部之螢光層23吸收， 而發出可見光。 請參照圖2與圖3所示，其係為冷陰極螢光燈2〇内 之螢光層23的發光頻譜（Spectrum )，三個主要波峰由右 而左分別代表藍色、綠色以及紅色三原色光所在之頻帶。 由圖中可知，由冷陰極螢光燈20之螢光層23所激發出來 的可見光中，還混有除了紅藍綠三原色以外的他色光（如 圖3中箭頭所指處，其係為次要波♦)。其中，介於紅色 光及綠色光之間的波峰（其波長範圍約為 560nm〜590nm)，通常只要冷陰極螢光燈20中有汞蒸氣的 存在’再加上綠色螢光粉體的存在時，即會產生這個次要 6 200835973 波峰。而且，往往會使得冷陰極螢光燈2〇之紅光及綠光 之純度降低，進而造成液晶_示裝置i之色彩飽和户 (Color Saturation)下降。 承上所述，如何提供一種能於冷陰極螢光燈作為背光 源時’減少他色光進入人眼之液晶顯示裝置及發光單元 實為一大課題。 【發明内容】 有鑑於上述課題’本發明之目的為提供一種提高色彩 飽和度之液晶顯示裝置及發光單元。 少 緣疋，為達上述目的，依據本發明之^^種發光單元 其係包含一透光體，發光早元特徵在於··透光體係具有一 頻譜吸收物質，頻譜吸收物質係至少具有一吸收峰介於光 波長560〜590nm之間。 ' 為達上述目的，依據本發明之一種液晶顯示裳置包含 -液晶顯示面板以及-背光模組。其中，液日日日顯示面板係 包含-透规’透光體係具#—頻譜錄㈣，頻譜吸收 物質係至少具有-吸收峰介於光波長56Q〜別⑽之間 光模組係設置於液晶顯示面板之—側。 。承上所述，因依據本發明之一種液晶顯示装置及發光 早7°係利用一透光體包含於-液晶顯示面板或一發光單 =藉= 光體:之_吸收物質吸收麻…〇 忠來吸收波長位於紅光與綠光之間的他色 、’ ’且此透光體係可毁置於光源至進人人㈣光路徑上之 7 200835973 任何位置。相較於習知技術，本發明之液晶顯示裝置及發 光單元藉由透光體中之頻譜吸收物質，以吸收波長位於紅 光與綠光之間之他色光，來達到提昇三原色之純度，進而 提高液晶顯示裝置之色彩飽和度。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之一 種液晶顯示裝置及發光單元，其中相同的元件將以相同的 參照符號加以說明。 請參照圖4所示，依據本發明較佳實施例之一種發光 單元4，其係包含一透光體，透光體係具有一頻譜吸收物 質，頻譜吸收物質係至少具有一吸收峰介於光波長 560nm〜590nm之間，而此頻譜吸收物質例如可為氧化鈦 (Nd203)。在本實施例中，發光單元4係可為一背光模組 或為一曰常照明裝置。以下，係以應用於液晶顯示裝置之 一側向式背光模組來舉例說明依據本發明較佳實施例之 發光單元4，但不以此為限。 如圖4所示，本實施例之發光單元4係包含一光源 41、一導光板42及一光學膜片43，光源41係發出一光線， 光線經由導光板42之一入光面421進入，藉由導光板42 導引進入之光線並使其朝導光板42之一出光面422射 出，再經由光學膜片43而使光線發散均勻、聚光及提高 亮度。在本實施例中，光源41係可為一冷陰極螢光燈 (CCFL)，光學膜片43係可選自一擴散板、一擴散片、一 8 200835973 增亮膜及—稜鏡㈣組成之鮮組的至少其中之一。 玄汊ί本實施例中，透光體係具有透光性，其係可為一玻 埚垃：例如應用於冷陰極螢光燈之玻璃燈管，於此，頻 譜吸收物質係可掺雜或塗佈於製作玻璃燈管之原料中而 形成具有吸收特定波長光之坡璃燈管。當玻璃燈管内之放 電介質作用發射出之可見光，通過此玻璃燈管後即可吸收 介於光波長560nm〜59〇nm之間的光線。 另外，透光體並不僅限於為玻璃燈管，其亦可形成為 一光學膜片，即為一構件設置於發光單元4之中，用以吸 收光源41所發出之光線中的特定波長光。例如，本實施 例之透光體可直接作為導光板42、擴散板、擴散片、增亮 膜或焱鏡片至少其中之一，即例如可將頻譜 或塗佈於料科紐、缝板、難^膜或稜= 片來達成。 另外，如圖5所示，依據本發明較佳實施例之一種液 晶顯示裝置7包含一液晶顯示面板6以及—背光模組5。 在本實施例中，液晶顯示面板6係包含一透光體61、 弟一偏光板62、一驅動基板63、一液晶芦64 濾光基板65及一第二偏光板66。 彩色 背光模組5係設置於液晶顯示面板6之一側，背光模 組5所發出之光線係依序通過第一偏光板犯、驅動基板 63、液晶層64、彩色濾光基板65以及第二偏光板％，藉 由該等偏純62、66選㈣定方向，以及分職置於^ 動基板63與彩色濾、光基板65上的一晝素電極與一共通電 9 200835973 極驅動液晶層64中的液晶分子，來控制光線是否通過， 並、、、二由卷色滤光基板65上之一彩色濾光片65丨達到呈現 全彩晝面之目的。 ^液日日顯7^面板6之透光體61係具有一頻譜吸收物 質，其係至少具有一吸收峰介於光波長56〇nm〜590nm之 間，在本實施例中，頻譜吸收物質係為氧化鈥。如圖5所 示，透光體61係可為一光學膜片，其係可設置於第一偏 光板62與驅動基板63之間，然而，透光體$ 1之設置位 置並不以此為限，其亦可設置於驅動基板63與液晶層64 之間、液晶層64與彩色濾光基板65之間或是彩色濾光基 板65與第二偏光板66之間。 另外’透光體61除了以光學膜片之形式設置於液晶 顯示面板6内之外，透光體61亦可本身即為偏光板62或 66、驅動基板63、液晶層64或彩色濾光基板65，即該等 構件之材質係摻雜或塗佈有吸收光波長位於 560nm〜590nm之間光線的頻譜吸收物質。 % 請參照圖6所示，以透光體61為彩色濾光基板65為 • 例，詳細來說，彩色濾光基板65係包括一玻璃基板652、 一彩色濾光片651及一黑色矩陣層（Black Matrix)653。彩 色濾光片651係位於玻璃基板652之上，彩色濾光片651 係包含複數彩色光阻654，而黑色矩陣層653係定義出複 數次晝素區域（R、G、B)，該等彩色光阻654係分別形 成於該等次晝素區域上，並覆蓋部分之黑色矩陣層653。 於此，頻譜吸收物質係可摻雜或塗佈於玻璃基板652中， 200835973 或是摻雜於彩色濾光片651之至少一該等彩色光阻654 中，例如：氧化鈦頻譜吸收物質係可分別摻雜於綠色光阻 與紅色光阻中。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat display device and a light emitting unit, and more particularly to a liquid crystal display device and a light emitting unit. [Prior Art] With the advancement of electronic technology, especially in the daily life of portable electronic products, the demand for light, thin, low-power display devices has increased. Among them, liquid crystal display devices (LCD Apparatus) have long been used in a wide variety of electronic products due to their low power consumption, low heat generation, light weight, and non-radiation. The conventional cathode ray tube display (CRT Display) has been gradually replaced. Referring to FIG. 1 , a conventional liquid crystal display device 1 mainly includes a backlight 11 , a first polarizing plate 12 , a driving substrate 13 , a liquid crystal layer 14 , a color filter substrate 15 , and a second Polarizing plate 16. A pixel electrode 131 is disposed on the driving substrate 13, and a common electrode 151 is disposed on the color filter substrate 15. The common electrode 151 is disposed corresponding to the pixel electrode 131. The light emitted by the backlight 11 is selected by the first polarizing plate 12 to allow a first predetermined direction of light to pass through the substrates 13 and 15 sandwiching the liquid crystal layer 14 therebetween by driving the liquid crystal molecules 141 in the liquid crystal layer 14 and No, the arrangement of the liquid crystal molecules 141 is changed to control whether the light passes through and reaches the second polarizing plate 16 to allow a second predetermined direction of light to pass. The color 5 200835973 color filter 152 disposed on the color filter substrate 15 on the side of the liquid crystal layer 14 is used to filter light and utilize the phenomenon of persistence of the human eye to make the light pass through the color filter 152 respectively. After forming the full-color three primary colors of red (R), green (G), and blue (B), the human eye can obtain a colored face. Conventionally, a cold cathode fluorescent lamp (CCFL) is mainly used as a backlight of a liquid crystal display device. As shown in FIG. 2, a conventional cold cathode fluorescent lamp 2 is used. A glass tube 21 is included. Each end of the glass tube 21 has an electrode 22, and the inner wall of the glass tube 21 is evenly coated with a phosphor layer 23. The inside of the glass tube 21 is filled with mercury vapor and a mixed inert gas (for example, a mixed gas of neon or argon) as a discharge medium. When lit, the electrode 22 is connected to the power source via the wire 221 to release electrons, and the electrons are accelerated by the electric field to collide with the discharge medium inside the glass tube 21, so that the discharge medium is in an excited state, and then the ultraviolet light is released to return to the ground state. Among them, the ultraviolet light emitted from the discharge medium is absorbed by the fluorescent layer 23 inside the glass tube 21 to emit visible light. Referring to FIG. 2 and FIG. 3, it is a spectrum of the fluorescent layer 23 in the cold cathode fluorescent lamp 2, and the three main peaks represent the blue, green and red primary colors from right to left. The frequency band in which the light is located. As can be seen from the figure, the visible light excited by the fluorescent layer 23 of the cold cathode fluorescent lamp 20 is mixed with other colors other than the red, blue and green primary colors (as indicated by the arrow in Fig. 3, the system is Want to wave ♦). Wherein, the peak between the red light and the green light (the wavelength range is about 560 nm to 590 nm), usually as long as there is the presence of mercury vapor in the cold cathode fluorescent lamp 20 plus the presence of the green fluorescent powder That will produce this secondary 6 200835973 wave crest. Moreover, the purity of the red and green light of the cold cathode fluorescent lamp is often lowered, which causes the color saturation of the liquid crystal display device i to decrease. As described above, how to provide a liquid crystal display device and a light-emitting unit that can reduce the color light entering the human eye when a cold cathode fluorescent lamp is used as a backlight is a major issue. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a liquid crystal display device and a light-emitting unit that improve color saturation. In order to achieve the above object, the light-emitting unit according to the present invention comprises a light-transmitting body, and the light-emitting element is characterized in that the light-transmitting system has a spectrum absorbing material, and the spectrum absorbing material has at least one absorption. The peak is between the wavelengths of 560 and 590 nm. In order to achieve the above object, a liquid crystal display panel according to the present invention comprises a liquid crystal display panel and a backlight module. Wherein, the liquid daily display panel comprises: a transparent permeable 'transparent system with a # spectrum recording (four), the spectrum absorbing material has at least - an absorption peak between the optical wavelength 56Q and another (10), and the optical module is disposed in the liquid crystal The side of the display panel. . According to the above description, a liquid crystal display device according to the present invention and a light-emitting 7° system are included in a liquid crystal display panel or a light-emitting single-battery light source. To absorb the wavelength between the red and green light, '' and this light transmission system can be destroyed anywhere in the light source to the person (4) light path 7 200835973 anywhere. Compared with the prior art, the liquid crystal display device and the light-emitting unit of the present invention enhance the purity of the three primary colors by absorbing the color light of the wavelength between the red light and the green light by the spectrum absorbing material in the light-transmitting body. Improve the color saturation of the liquid crystal display device. [Embodiment] Hereinafter, a liquid crystal display device and a light-emitting unit according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein the same elements will be described with the same reference numerals. Referring to FIG. 4, a light-emitting unit 4 according to a preferred embodiment of the present invention includes a light-transmitting body, the light-transmitting system has a spectrum absorbing material, and the spectrum absorbing material has at least one absorption peak at a wavelength of light. Between 560 nm and 590 nm, and the spectrum absorbing material can be, for example, titanium oxide (Nd203). In this embodiment, the light unit 4 can be a backlight module or a constant illumination device. Hereinafter, the light-emitting unit 4 according to the preferred embodiment of the present invention is exemplified by a side-lit backlight module applied to a liquid crystal display device, but is not limited thereto. As shown in FIG. 4, the light-emitting unit 4 of the present embodiment includes a light source 41, a light guide plate 42, and an optical film 43. The light source 41 emits a light, and the light enters through the light-incident surface 421 of one of the light guide plates 42. The light entering the light guide plate 42 is guided to the light exit surface 422 of the light guide plate 42, and the light is diffused uniformly, concentrated, and brightness enhanced by the optical film 43. In this embodiment, the light source 41 can be a cold cathode fluorescent lamp (CCFL), and the optical film 43 can be selected from a diffusion plate, a diffusion sheet, an 8 200835973 brightness enhancement film, and a 稜鏡 (4). At least one of the fresh groups. In this embodiment, the light-transmitting system has light transmissivity, and the light-transmitting system may be a glass bulb: for example, a glass bulb used in a cold cathode fluorescent lamp, where the spectrum absorption material may be doped or coated. The cloth is formed in the raw material of the glass bulb to form a glazed tube having light for absorbing a specific wavelength. When the discharge medium in the glass tube emits visible light, the glass tube can absorb light between 560 nm and 59 〇 nm. In addition, the light-transmitting body is not limited to a glass tube, and may be formed as an optical film, that is, a member is disposed in the light-emitting unit 4 for absorbing light of a specific wavelength in the light emitted by the light source 41. For example, the light-transmitting body of the embodiment can be directly used as at least one of the light guide plate 42, the diffusion plate, the diffusion sheet, the brightness enhancement film or the 焱 lens, that is, for example, the spectrum or the coating can be applied to the material, the seam plate, and the hard surface. ^ Membrane or rib = piece to achieve. In addition, as shown in FIG. 5, a liquid crystal display device 7 according to a preferred embodiment of the present invention includes a liquid crystal display panel 6 and a backlight module 5. In the present embodiment, the liquid crystal display panel 6 includes a light transmissive body 61, a polarizing plate 62, a driving substrate 63, a liquid crystal reed 64 filter substrate 65, and a second polarizing plate 66. The color backlight module 5 is disposed on one side of the liquid crystal display panel 6. The light emitted by the backlight module 5 passes through the first polarizing plate, drives the substrate 63, the liquid crystal layer 64, the color filter substrate 65, and the second. The polarizing plate % is selected by the partial pure 62, 66 (4) direction, and the monolithic electrode and the co-energized 9 200835973 pole driving liquid crystal layer which are separately placed on the substrate 63 and the color filter and the optical substrate 65 The liquid crystal molecules in 64 are used to control whether or not the light passes, and the color filter 65 on the color filter substrate 65 reaches the full color surface. The light-transmitting body 61 of the liquid crystal display panel 6 has a spectrum absorbing material having at least one absorption peak between the wavelengths of 56 〇 nm and 590 nm, and in this embodiment, the spectrum absorbing material is It is yttrium oxide. As shown in FIG. 5, the light transmitting body 61 can be an optical film, which can be disposed between the first polarizing plate 62 and the driving substrate 63. However, the position of the light transmitting body $1 is not Alternatively, it may be disposed between the driving substrate 63 and the liquid crystal layer 64, between the liquid crystal layer 64 and the color filter substrate 65, or between the color filter substrate 65 and the second polarizing plate 66. In addition, the translucent body 61 may be a polarizing plate 62 or 66, a driving substrate 63, a liquid crystal layer 64 or a color filter substrate, in addition to being disposed in the liquid crystal display panel 6 in the form of an optical film. 65, that is, the material of the members is doped or coated with a spectrum absorbing material that absorbs light having a wavelength of between 560 nm and 590 nm. %, as shown in FIG. 6, the light-transmitting body 61 is a color filter substrate 65 as an example. In detail, the color filter substrate 65 includes a glass substrate 652, a color filter 651, and a black matrix layer. (Black Matrix) 653. The color filter 651 is located on the glass substrate 652, the color filter 651 includes a plurality of color photoresists 654, and the black matrix layer 653 defines a plurality of pixel regions (R, G, B). A photoresist 654 is formed on the sub-tenoxine region and covers a portion of the black matrix layer 653. Here, the spectrum absorbing material may be doped or coated in the glass substrate 652, 200835973 or at least one of the color photoresists 654 doped with the color filter 651, for example, a titanium oxide spectrum absorbing material may be They are doped in green photoresist and red photoresist, respectively.
承上，再請參照圖7所示，其係顯示頻譜吸收物質之 光吸收頻譜。由圖中顯示，頻譜吸收物質於光波長 56〇nm~590nm之間具有一吸收峰，換言之，當光線由背光 模組5發出進入彩色遽光片651後，彩色濾光片651之頻 譜吸收物質即可吸收原本於綠光及紅光之間所具有的他 色光之吸收峰，因此增加液晶顯示裝置7的色彩飽和度。 综上所述，因依據本發明之一種液晶顯示裝置及發光 單元係利用一透光體包含於一液晶顯示面板或一發光單 元中，藉由透光體中之頻譜吸收物質吸收56〇nm至59〇nm 之間的光波長，來吸收波長位於紅光與綠光之間的他色 光，且此透光體係可設置於光源至進入人眼的光路徑上之 任何位置。相較於習知技術，本發明之液晶顯示裝置及發 光單元藉由透光體中之頻譜吸收物質，以吸收波長位於紅 光與綠光之間之他色光，來達到提昇三原色之純度，進而 提鬲液晶顯示裝置之色彩飽和度。 以上職僅鱗娜1麵限触者。 本备明之精神與_，而對其進行之等效修 應包含於後附之申請專利範圍中。 5艾 二 【圖式簡單說明】 圖； 圖1為顯示習知之一種液曰曰，示裝置的示意 11 200835973 圖2為顯示習知之一種冷陰極螢光燈的示意圖； 圖3為顯示習知之一種冷陰極螢光燈的發光頻譜圖； 圖4為顯示依據本發明較佳實施例之一種發光單元的 示意圖； 圖5為顯示依據本發明較佳實施例之一種液晶顯示裝 置的示意圖； 圖6為顯示依據本發明較佳實施例之一種液晶顯示裝 置之彩色濾光基板的示意圖；以及 圖7為顯示依據本發明較佳實施例之一種液晶顯示裝 置中頻譜吸收物質的光吸收頻譜圖。 元件符號說明： I 液晶顯示裝置 II 背光源 12 第一偏光板 13 基板 131 晝素電極 14 液晶層 141 液晶分子 15 彩色濾光基板 151 共通電極 152 彩色濾光片 16 第二偏光板 20 冷陰極螢光燈 12 玻璃管 電極 導線 螢光層 發光單元 光源 導光板 入光面 出光面 光學膜片 背光模組 液晶顯示面板 透光體 偏光板 驅動基板 液晶層 彩色滤光基板 彩色濾光片 玻璃基板 黑色矩陣層 彩色光阻 第二偏光板 藍 綠 13 200835973 R 紅 7 液晶顯示裝置 14Further, please refer to Fig. 7, which shows the light absorption spectrum of the spectrum absorbing material. As shown in the figure, the spectrum absorbing material has an absorption peak between 56 nm and 590 nm of the light wavelength. In other words, when the light is emitted from the backlight module 5 into the color filter 651, the spectrum absorption material of the color filter 651 The absorption peak of the other color light originally existing between the green light and the red light can be absorbed, thereby increasing the color saturation of the liquid crystal display device 7. In summary, a liquid crystal display device and a light-emitting unit according to the present invention are contained in a liquid crystal display panel or a light-emitting unit by using a light-transmitting body, and the spectrum absorption material in the light-transmitting body absorbs 56 nm to The wavelength of light between 59 〇 nm absorbs the color of the light between the red and green light, and the light transmission system can be placed anywhere on the light path into the human eye. Compared with the prior art, the liquid crystal display device and the light-emitting unit of the present invention enhance the purity of the three primary colors by absorbing the color light of the wavelength between the red light and the green light by the spectrum absorbing material in the light-transmitting body. Improve the color saturation of the liquid crystal display device. The above positions are only limited to one person. The spirit of this statement and _, and the equivalent modifications thereto are included in the scope of the appended patent application. 5Ai 2 [Simple description of the drawing] Fig. 1 is a schematic diagram showing a liquid helium, showing the device 11 200835973 Fig. 2 is a schematic view showing a conventional cold cathode fluorescent lamp; Fig. 3 is a view showing a conventional one FIG. 4 is a schematic view showing a light emitting unit according to a preferred embodiment of the present invention; FIG. 5 is a schematic view showing a liquid crystal display device according to a preferred embodiment of the present invention; A schematic diagram showing a color filter substrate of a liquid crystal display device according to a preferred embodiment of the present invention; and FIG. 7 is a view showing a light absorption spectrum of a spectrum absorbing material in a liquid crystal display device according to a preferred embodiment of the present invention. DESCRIPTION OF REFERENCE NUMERALS: I liquid crystal display device II backlight 12 first polarizing plate 13 substrate 131 halogen electrode 14 liquid crystal layer 141 liquid crystal molecule 15 color filter substrate 151 common electrode 152 color filter 16 second polarizing plate 20 cold cathode fluorescent Light 12 Glass tube electrode wire Fluorescent layer Light-emitting unit Light source Light guide plate Light-emitting surface Light-emitting surface Optical film Backlight module Liquid crystal display panel Light-transmitting polarizer Driving substrate Liquid crystal layer Color filter substrate Color filter Glass substrate Black matrix Layer color photoresist second polarizer blue green 13 200835973 R red 7 liquid crystal display device 14