經濟部智慧財產局員工消費合作社印製 1294〇54 五、發明說明（1 ) 發明背景 1.發明領域 本發明關於一用於液晶顯示裝置之背光總成以及一具有 該背光總成之液晶顯示裝置。較特別地，本發明關於一具新穎 結構光導引板之液晶顯示裝置，其中色散粒子分佈於光導引板 中且一光散射圖形形成於該光導引板之背面部件上，因此改善 了該液晶裝置之亮度及光效能。 2 ·相關技藝之描述 陰極射線管通常用於電視機、測量儀器、資訊設備之螢 幕。然而陰極射線管具有相當的重量以及大尺寸，陰極射線管 並不符合電子設備最小化以及輕量需求的趨勢。 為了解決以上問題，產生了由使用液晶填入一液晶顯示面 板之電子與光學的特徵顯示資訊的液晶顯示裝置。該液晶顯示 裝置不僅符合電子設備最小化與輕量的需求，而且可減少電力 的浪費。近來，該液晶顯示裝置用於一平面顯示面板裝置中。 在液晶顯示裝置中，一電壓應用於預先測定該液晶的分子 排列以便改變其液晶的分子排列。藉由改變該液晶的分子排 列，該液晶胞的光學特徵諸如雙折射、極化作用、二色性與光 散射特徵改變以至使一影像能各自地顯示。即是，該液晶顯示 裝置藉由使用該液晶胞調節該光。該液晶示裝置歸類為一扭轉 向列型與一超扭轉向列型。此外，該液晶顯示裝置可由依據驅 動的方式歸類為一使用開關裝置與扭轉向列型液晶的主動矩 陣顯示型以及一使用超扭轉向列型液晶的被動矩陣顯示型。 該填入於一 TFT(薄膜電晶體）基板與一彩色濾光器基板之 本紙張尺錢财關家標釐 -----------* --------訂---------線^^ Γ I (請先閱讀背面之注意事項再填寫本頁) 1294054 A7 經濟部智慧財產局員工消費合作社印製 B7 五、發明說明（2 ) 間的液晶為一光接受物質，該物質藉由調整入射自外部的光量 顯示資訊於一螢幕，因此該液晶顯示裝置需要一分離光源，諸 如一發射該光進入該液晶顯示面板之背光總成。 然而該背光總成在該液晶顯示裝置中使用大量的能源，該 背光總成的尺寸及光效能與該液晶顯示裝置的機械/光學特 徵息息相關。近來，發展各種不同的背光總成以改良該背光總 成的亮度與光效能，並減少電力的浪費。該背光總成依據光源 的位置分為一垂直型與一邊緣型，以及依據光導引板的外形分 為一平面型以及一傾斜型。 較佳地，一具有傾斜光導引板之邊緣型背光總成使用於減 少重量、改善亮度以及使發射光均勻。 該液晶顯示器的例子揭露於一名為「用於LCD螢幕之光源 冷卻器」之美國專利第5,502,582號發明與一名為「具LCD螢幕 之小型個人電腦」之美國專利第5,825,614號發明 依據反射至光源的距離，輸入至該背光總成之光導引板的 光量不同。因此，不僅其光均勻性降低，而且離光源偏遠的光 導引板區域其亮度較低。為了解決上述問題，第5，178,447號美 國專利揭露了改善光的亮度且能均勻分布LCD面板之光進行 方向的光導引板。 第1圖為一表示用於液晶顯示裝置之一般背光總成透視 圖，且第2圖為第1圖中該液晶顯示器沿” A1_A2，，線切割之截面 圖。 參照第1、2圖，一液晶顯示裝置之該背光總成由一燈單元 100以及-光導引單元所組成。該燈導引單㈣〇包括—用 氏張尺度適用中國國豕標準（CNS)A4規格（210 X 297公爱 --------------------訂---------線 ' * (請先閱讀背面之注意事項再填寫本頁) 1294054 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（ 於產生光之燈110以及包圍該燈丨之燈反射器丨2〇。 該燈11〇較佳為使用一冷陰極管。產生自該燈11〇的光輸入 至一光導引板210。 此時，由於產生自該燈110的光為全方向發射，該發射至 光導引板210相反方向的光其藉由該燈反射器12〇反射至該光 導引板210以增進光效能。 光導引單元200包括一反射板22〇、該光導引板21〇、一散 射片以及一多數的光聚焦片240。 該光導引板210由一如丙烯樹脂之透明塑膠材料所組成。 忒光導引板210為具有一傾斜背面、一水平光輸出面、一光入 射面及一側面的形狀。產生自燈u〇的光經由該光導引板21〇 之光輸出面行進至一液晶顯示裝置（未表示）。 此時，為了變換該光至液晶顯示器之方向，一散射油墨212 以一點狀圖形的形式印刷於光導引板21〇的後面上。藉由該散 射油墨圖形212,該輸入至該光導引板21〇的光為混亂地反射。 於是’該輸入至該光輸出面的光具有一小於該光導引板21〇臨 界角度之入射角，以至於該光能輕易導引至一液晶顯示面板 (未表示）。 為了改善該光輸入至該液晶顯示面板的一致性，形成於光 導引板煮面之該散射油墨圖形212的密度為相異地。也就是， 散射油墨圖形212的密度在離該光源較遠時為較高。 該反射板220形成於光導引板21〇的背面。該散射片230與 該聚焦片240為連續地堆疊於該光導引板21〇上。 該反射板220不藉由散射油墨212而朝該光導引板之光輸 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------訂---------^ AW - i (請先閱讀背面之注意事項再填寫本頁) 1294054 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（4) 出面反射該光，因此當光輸入至該液晶顯示器時能減少光損 失，且增進該光導引板210之光輸出面的光散佈之一致性。 位於該光導引板210與光聚焦片240間的散射片230朝該液 晶顯示面板反射該輸出光，該光具有反射至該光輸出面之預先 測定的斜角，因此改善其正面的亮度。 該等光聚焦片240位於散射片230與液晶顯示面板間。該等 光聚焦片240為一多數之預定排列的之三角形棱柱片。該等光 聚焦片240為彼此以一預定的角度相抵。該等光聚焦片240減少 該光自散射片230入射的可視角，以至於改善輸入至該液晶顯 示面板之光的前面亮度。於是能節約電力。通常該等光聚焦片 240包括一用於保護該棱柱片之保護片。該液晶顯示面板安裝 於該保護片上。 然而，常見的背光總成中，光源位於光導引板之一侧或兩 側，因此輸入至光導引板的光可部分經由該光導引板之側面漏 出’該側面位於該光入射面之對面。於是，該液晶顯示面板的 亮度以及光效能降低。 特別地，由於該作為螢幕之液晶顯示面板具有厚於作為筆 記型個人電腦液晶顯示面板的厚度，其光的損失量增加以至於 該液晶顯示裝置的光效能惡化。 發明之概述 本發明為解決習知技藝的問題而製造，且因此本發明之第 一目標提供一液晶顯示裝置，其避免該光由該光導引板之側面 漏出，該側面位於該光入射面之對面，因此改善光效能以及亮 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ----------——mwi------訂、—-----線· - ί (請先閱讀背面之注意事項再填寫本頁) 1294054 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（5 ) 度。 本發明第二目標為提供一聚光導引板之背光總成，其可避 免該光由該光導引板之側面漏出，該側面位於該光入射面之對 面。 為完成本發明之第一目標，提供有一包含背光總成之液晶 顯示器’該背光總成包含一產生光之光源、與一位於該光源一 側之光導引板、一顯示影像之顯示單元與一容納該背光總成與 該顯示單元的容器組件。 該光導引板包括一自該光源接收光的光入射面、一位於光 入射面對面之側面、一用於輸出光的光輸出面、以及一位於該 光輸出面對面之背面。該背面形成具有一光散射部件用於使該 產生自該光源的光均勻地輸出至該光輸出面。該光導引板形成 在其内部形成一具有用於分散該輸入至該光導引板的光之光 分散元件。 為完成本發明之第二目標，提供有一用於一顯示裝置之背 光總成，該顯示裝置包含一用於產生光之光源以及一位於該光 源一侧之光導引板。該光導引板包括一自該光源接收光的光入 射面、一位於光入射面對面之側面、一用於輸出光的光輸出 面、以及一位於該光輸出面對面之背面。該背面形成具有一光 散射部件用於使該產生自該光源的光均勻地輸出至該光輸出 面。該光導引板在其内部形成一具有用於分散該輸入至該光導 引板的光之光分散元件。 依據本發明，該由側面漏出光藉由製造該光分散元件分散 粒子的接觸，輸出至該輸出面，因此改善其光效能及亮度。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) [294054BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight assembly for a liquid crystal display device and a liquid crystal display device having the backlight assembly. . More particularly, the present invention relates to a liquid crystal display device having a novel structure light guiding plate in which dispersed particles are distributed in a light guiding plate and a light scattering pattern is formed on a back surface member of the light guiding plate, thereby improving The brightness and light efficiency of the liquid crystal device. 2·Description of related art The cathode ray tube is usually used for the screen of televisions, measuring instruments, and information equipment. However, cathode ray tubes have considerable weight and large size, and cathode ray tubes do not conform to the trend of minimization and light weight of electronic equipment. In order to solve the above problems, a liquid crystal display device which displays information by electronic and optical characteristics in which a liquid crystal display panel is filled with liquid crystal is produced. The liquid crystal display device not only meets the minimization and light weight requirements of electronic devices, but also reduces power waste. Recently, the liquid crystal display device is used in a flat display panel device. In the liquid crystal display device, a voltage is applied to measure the molecular arrangement of the liquid crystal in advance to change the molecular arrangement of the liquid crystal. By changing the molecular arrangement of the liquid crystal, optical characteristics of the liquid crystal cell such as birefringence, polarization, dichroism, and light scattering characteristics are changed so that an image can be displayed separately. That is, the liquid crystal display device adjusts the light by using the liquid crystal cell. The liquid crystal display device is classified into a twisted nematic type and a super twisted nematic type. Further, the liquid crystal display device can be classified into an active matrix display type using a switching device and a twisted nematic liquid crystal and a passive matrix display type using a super twisted nematic liquid crystal in a driving manner. The paper is filled in a TFT (thin film transistor) substrate and a color filter substrate, and the paper size is set by the money------------------- ------- Line ^^ Γ I (Please read the note on the back and fill out this page) 1294054 A7 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed B7 V. Invention description (2) The liquid crystal is one The light-receiving substance displays information on a screen by adjusting the amount of light incident from the outside, so the liquid crystal display device requires a separate light source, such as a backlight assembly that emits the light into the liquid crystal display panel. However, the backlight assembly uses a large amount of energy in the liquid crystal display device, and the size and light efficiency of the backlight assembly are closely related to the mechanical/optical characteristics of the liquid crystal display device. Recently, various backlight assemblies have been developed to improve the brightness and light efficiency of the backlight assembly and to reduce power waste. The backlight assembly is divided into a vertical type and an edge type according to the position of the light source, and is divided into a flat type and a tilt type according to the shape of the light guiding plate. Preferably, an edge type backlight assembly having an inclined light guiding plate is used to reduce weight, improve brightness, and make the emitted light uniform. An example of such a liquid crystal display is disclosed in U.S. Patent No. 5,502,582, the disclosure of which is incorporated herein by reference. The distance of the light source is different from the amount of light input to the light guide plate of the backlight assembly. Therefore, not only is the light uniformity lowered, but also the area of the light guiding plate which is remote from the light source is low in brightness. In order to solve the above problems, U.S. Patent No. 5,178,447 discloses a light guiding plate which improves the brightness of light and uniformly distributes the direction of light of the LCD panel. 1 is a perspective view showing a general backlight assembly for a liquid crystal display device, and FIG. 2 is a cross-sectional view of the liquid crystal display taken along line A1_A2 in Fig. 1. Referring to Figures 1 and 2, The backlight assembly of the liquid crystal display device is composed of a lamp unit 100 and a light guiding unit. The lamp guiding unit (four) 〇 includes - using the Chinese standard (CNS) A4 specification (210 X 297 gong) Love -------------------- Order --------- Line ' * (Please read the notes on the back and fill out this page) 1294054 A7 B7 Ministry of Economic Affairs, Intellectual Property Bureau, Staff Consumer Cooperatives, Printing, V. Inventions (in the light lamp 110 and the lamp reflector 包围2〇 surrounding the lamp urn. The lamp 11 〇 preferably uses a cold cathode tube. The light of the lamp 11 is input to a light guiding plate 210. At this time, since the light generated from the lamp 110 is emitted in all directions, the light emitted to the opposite direction of the light guiding plate 210 is guided by the lamp reflector 12 The light is reflected to the light guiding plate 210 to enhance the light efficiency. The light guiding unit 200 includes a reflecting plate 22, the light guiding plate 21, a scattering sheet, and A plurality of light focusing sheets 240. The light guiding plate 210 is composed of a transparent plastic material such as acrylic resin. The light guiding plate 210 has an inclined back surface, a horizontal light output surface, a light incident surface and a side surface. The light generated from the lamp u〇 travels through the light output surface of the light guiding plate 21 to a liquid crystal display device (not shown). At this time, in order to change the direction of the light to the liquid crystal display, a scattering ink 212 Printed on the back of the light guiding plate 21A in the form of a dot pattern. By the scattering ink pattern 212, the light input to the light guiding plate 21 is disorderly reflected. Then the input to the light The light of the output surface has an incident angle smaller than a critical angle of the light guiding plate 21 so that the light can be easily guided to a liquid crystal display panel (not shown). To improve the uniformity of the light input to the liquid crystal display panel The density of the scattering ink pattern 212 formed on the cooking surface of the light guiding plate is different. That is, the density of the scattering ink pattern 212 is higher when it is farther from the light source. The reflecting plate 220 is formed on the light guide. Guide plate 21〇 The backing plate 230 and the focusing piece 240 are continuously stacked on the light guiding plate 21A. The reflecting plate 220 is not applied to the light guiding plate of the light guiding plate by the scattering ink 212. China National Standard (CNS) A4 Specification (210 X 297 mm) --------Book ---------^ AW - i (Please read the note on the back and fill out this page) 1294054 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed A7 B7 V. Invention Description (4) Reflecting the light, so that when light is input to the liquid crystal display, the light loss can be reduced, and the light output of the light guiding plate 210 can be improved. The consistency of the surface light spread. The diffusing sheet 230 located between the light guiding plate 210 and the light focusing sheet 240 reflects the output light toward the liquid crystal display panel, and the light has a predetermined bevel angle reflected to the light output surface, thereby improving the brightness of the front surface thereof. The light focusing sheets 240 are located between the diffusion sheet 230 and the liquid crystal display panel. The light focusing sheets 240 are a plurality of triangular prism sheets of a predetermined arrangement. The light focusing sheets 240 are offset from each other by a predetermined angle. The light focusing sheets 240 reduce the view angle at which the light is incident from the diffusion sheet 230, so as to improve the front luminance of the light input to the liquid crystal display panel. This can save power. Typically, the light focusing sheets 240 include a protective sheet for protecting the prism sheets. The liquid crystal display panel is mounted on the protective sheet. However, in a common backlight assembly, the light source is located on one side or both sides of the light guiding plate, so that light input to the light guiding plate may partially leak out through the side of the light guiding plate. Opposite. Thus, the brightness and light efficiency of the liquid crystal display panel are lowered. In particular, since the liquid crystal display panel as a screen has a thickness thicker than that of a pen-type personal computer liquid crystal display panel, the amount of light loss thereof is increased so that the light performance of the liquid crystal display device is deteriorated. SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and thus the first object of the present invention is to provide a liquid crystal display device which prevents the light from leaking from the side of the light guiding plate, the side being located on the light incident surface Opposite, therefore improving the light efficiency and the standard of the paper is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ----------------mwi------ -----Line· - ί (Please read the note on the back and fill out this page) 1294054 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed A7 B7 V. Invention description (5) degrees. A second object of the present invention is to provide a backlight assembly for a concentrating guide plate that prevents the light from leaking out from the side of the light guiding plate, the side being located opposite the light incident surface. In order to accomplish the first object of the present invention, a liquid crystal display including a backlight assembly is provided. The backlight assembly includes a light source for generating light, a light guiding plate on one side of the light source, and a display unit for displaying images. A container assembly housing the backlight assembly and the display unit. The light guiding plate includes a light incident surface for receiving light from the light source, a side surface facing the light incident surface, a light output surface for outputting light, and a back surface facing the light output facing surface. The back surface is formed with a light scattering member for uniformly outputting the light generated from the light source to the light output surface. The light guiding plate is formed with a light dispersing element having a light therein for dispersing the light input to the light guiding plate. In order to accomplish the second object of the present invention, there is provided a backlight assembly for a display device, the display device comprising a light source for generating light and a light guiding plate on a side of the light source. The light guiding plate includes a light incident surface for receiving light from the light source, a side surface facing the light incident face, a light output surface for outputting light, and a back surface facing the light output face. The back surface is formed with a light scattering member for uniformly outputting the light generated from the light source to the light output surface. The light guiding plate has a light dispersing element having a light therein for dispersing the light input to the light guiding plate. According to the present invention, the light leaking from the side is output to the output surface by the contact of the dispersed particles of the light-dispersing element, thereby improving the light efficiency and brightness. This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) -------------------- Order--------- Line (Please read the notes on the back and fill out this page) [294054
五、發明說明（6 ) 經濟部智慧財產局員工消費合作社印製 凰式之簡要說明 、本發明上述目標以及其他優點藉由詳細描述具體實施例 並參照該附屬圖式將變的明顯，其中： 第1圖為-表示用於液晶顯示裝置之—般背光總成透視 131 · 圃， 第2圖為第1圖中所示之該背光總成沿”ai_a2，，線切割之 載面圖； 第3圖為表π -依據本發明一具體實施例的液晶顯示裝置 略圖； 第4圖為一表不一依據本發明一具體實施例的液晶顯示裝 置概略分解圖； 第5圖為-表示-依據本發明—具體實施例的背光總成之 戴面圖；以及 第6A至6DSI為常見的背光總成與本發明之背光總成間的 亮度比較圖。 趋體實施例之；fe 於本發明中，本發明將參照伴隨的圖式詳述之。在本申請 案中使用於電腦螢幕中的背光總成被解釋為該等背光總成 之一例。 第3圖為一依據本發明之具體實施例之液晶顯示裝置概略 分解圖 多…、第3圖，一電腦系統9〇〇有一輸入裝置5〇〇，該輸入裝 :297公釐） ----------*—--------訂---------線 - * (請先閱讀背面之注意事項再填寫本頁) 1294054 經濟部智慧財產局員工消費合作社印製 A7 B7__ 五、發明說明（7 ) 置500具有一鍵盤510以及一滑鼠520，一具有邏輯與計算電路 及儲存裝置的機體600，以及一用於顯示影像資訊的螢幕700。 藉由輸入裝置500輸入的資料由機體600的邏輯與計算電 路處理且存於該儲存裝置或輸出至該螢幕700。 該螢幕700為一可減少電力浪費、與一輕量及一薄結構之 液晶顯示裝置。該液晶顯示裝置包括一影像顯示部件A以及一 用於容納該影像顯示部件A之框400。一支持板450形成於該框 400較低部件以支持該螢幕700。該框400擁有具長方形環狀之 容納空間之底部架420以及具一開口部件之頂部架410用於設 置該影像顯示部件A。該底部架420偶合至該頂部架410以形成 該框400。 第4圖為依據本發明之一具體實施例之一液晶顯示裝置概 略分解圖。 參照第4圖，該液晶顯示裝置700包括一用於顯示影像之顯 示單元100、一用於提供光至該顯示單元100之背光總成200、 用於容納該顯示單元100與該背光總成200之底部架420、以及 用於固定該顯示單元與該背光總成於該底部架420之頂部架 410 ° 該顯示單元100包括一用於顯示該影像之液晶顯示面板 110、一用於提供驅動訊號至數據列之源側印刷電路板120、一 用於提供偵測該數據驅動訊號時間之源側帶狀媒介組121、一 用於提供驅動訊號至一閘極列之閘極側軟線路板130、以及一 提供偵測該閘極驅動訊號時間之閘極側帶狀媒介組131。該液 晶顯示面板110由一薄膜電晶體基板111、一彩色濾波器基板 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -----!.f------- *訂---------線· (請先閱讀背面之注意事項再填寫本頁) -10- 1294054 經濟部智慧財產局員工消費合作社印製 A7 B7_ 五、發明說明（8 ) 112、以及介於該薄膜電晶體基板111與該彩色濾波器基板112 間之一液晶（未表示）所組成。 該薄膜電晶體基板111為一透玻璃基板與矩陣式薄膜電晶 體所形成。該數據列為連接至該薄膜電晶體基板111之源極端 以及該閘極列為連接至該薄膜電晶體基板111之閘極端。此 外，一由銦錫氧化物（ITO)製造之像素電極為連接至該薄膜電 晶體基板111之汲極端。 該光通過該彩色濾波器基板112，其紅綠藍像素為藉由一 薄膜製造方法所形成。一由ITO製造之常見的電極覆蓋於該彩 色濾波器基板112之前部件上。 當電力提供至薄膜電晶體基板111之閘極端與源極端時， 一電場形成於彩色濾波器基板112之像素電極與常見電極間。 該電場改變介於薄膜電晶體基板111與彩色濾波器基板112間 液晶顆粒的角度，故該光傳送率改變而得到所欲的像素。 此時，為了控制該提供至該數據列與該閘極之驅動訊號與 計時訊號，提供了具一驅動積體電路之源側帶狀媒介組121以 及閘極側帶狀媒介組。 該被光總成200提供於該顯示單元100之下以便均勻地發 射該光至該顯示單元100。該被光總成200由一燈單元與一光導 引單元所組成。該燈單元包括一用於生成光之燈210與用於包 圍該燈之光反射器212。該光導引單元包括一光導引板220、一 反射板230以及一光學片240。 該燈210較佳地為一冷陰極射線管。該燈位於該光導引板 220之一側或兩側。生成自該燈210光輸入至該光導引板220。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ------------------訂---------- *5^ (請先閱讀背面之注意事項再填寫本頁) -11- A7 1294054 B7 __ 五、發明說明（9 ) 該燈反射器212反射該光至該光導引板220。 該光導引板220為一符合該液晶顯示面板110尺寸的大 小，且位於位於液晶顯示面板110之下。生成自該燈210的光由 該光導引板220被導至該顯示單元100。 為了轉變光的方向到該液晶顯示面板110，一具有點狀形 式之散射圖形印刷於該光導引板220之背面上。用於分散該光 之分散顆粒分佈於該光導引板上。 因此，直進至該光導引板220的光藉由與該分散顆粒接觸 而分散，且藉由該散射圖形朝該光輸出面散射，以避免光的洩 漏並改善光的亮度。 用以增進光效能之反射面板230位於該光導引板220之 下。該反射板230朝該光導引板220反射洩漏自光導引板220的 光。多數的光學片240提供於該光導引板20之上，使自該光導 引板220入射至該液晶顯示面板的光其亮度均勻地形成。該光 學片240包括一用於散射輸入至該該光導引板220的光的散射 片、一用於以一垂直方向聚焦該散射光至液晶顯示面板110之 光聚焦片，以及一用於保護該光聚焦片表面之保護片。 該包括於底部架420之背光總成200與顯示單元100大體上 為堆疊於該底部架420之底部。該底部架420具有一六角形盒之 外型或一長方形環狀外型，且該底部架420之上部為開放的。 即是，該底部架420具有四邊的壁以及一底面。容許該電力轉 換至該燈210之一開口部行程於該邊壁。 在顯示單元100與背光總成200收納於該底部件420後，該 頂部件410偶合至該底部件420以便固定顯示單元100與背光總 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） ----------I --------訂---------線 ^一^ (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 -12- 1294054 經濟部智慧財產局員工消費合作社印製 A7 B7__ 五、發明說明（l〇) 成200於該底部件420之底部。該頂部件410亦具有合於該底部 件420之一六角形外型。該頂部件410之一上部為開放的以暴露 該液晶顯示面板110，且該頂部件410之一側壁為垂直彎曲以便 覆蓋該顯示單元210之上周圍部件。用於支持該頂部件410之支 持板為與該頂部件410—體成型。 如上所述，藉由偶合該頂部件410至含有該顯示單元100 與該背光總成200之底部件420，本發明之該液晶顯示裝置700 的組裝得以完成。 以下，將詳述該液晶顯示面板220的結構以及功能。 第5圖為一表示依據本發明一具體實施例的背光總成之剖 面圖。 如上所述，該背光總成200具有一預定厚度之平面型光導 引板22，與位於該光導引板220兩側端之一對燈210。 該光導引板220導引來自該燈210的光朝向該顯示單元 100。為了變換朝向該液晶顯示面板110之光的方向，一具有細 點外型之散射圖形224印刷於該光導引板220之背面。用於分散 該光之分散顆粒220分佈於該光導引板220上。 該光散射圖形224實質上由聚甲基丙烯酸甲酯（PMMA)所 組成。為了增進其黏著力，添加聚乙烯醇（PVA)至PMMA。在 藉由使用一有機溶劑溶解PMMA與PVA之後，一混合光分散劑 的墨水以絲網印刷法印於該光導引板220之背面。亦可直接形 成分散元件至該光導引板220。此外，該入射光能經由一棱柱 形的孔反射。該光能藉由在該反射面塗覆一分散劑而輸出。該 孔可為不同的形狀如凸透鏡形、梯形、或一六角形。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -------------------訂---------線^|^ (請先閱讀背面之注意事項再填寫本頁) -13- 1294054 A7 五、發明說明（11) (請先閱讀背面之注意事項再填寫本頁) 該光反射圖形224混亂地反射輸入至該光導引板220之 光。因此，輸入至該光導引板220之光輸出面的光具有一小於 該光導引板210臨界角之入射角，以致改善朝該液晶顯示面板 110輸出的光的品質。此外，該光散射圖形224的尺寸為其連接 至該燈210之區域為相對地小以致朝該輸出面的散射光量減 少。另一方面，遠離該燈210之該光散射圖形224為相對地大以 致朝該輸出面的散射光量增加。因此，改良了該光導引板220 輸出面的光均勻性。 此外，該分佈於光導引板220之分散顆粒222與該光導引板 220為一體成型。該分散顆粒222為包含如PMMA之有機聚合 物，該有機聚合物對該光的特徵發揮影響力且能改變該洩漏光 的方向。由於該分散顆粒222由使用細顆粒所形成，該分散顆 粒222具有高分散效能且在該光導引板22〇内不需大的空間。較 佳地，該分散顆粒222的總量不多於該光導引板220總量的百分 之10 〇 經濟部智慧財產局員工消費合作社印製 此外，該分散顆粒於光入射面之分佈密度高於該分散顆粒 於該側面之分佈密度，以至於光的均勻度能進一步改善。在光 導引板220中’光繼續直線行進與該分散顆粒222接觸且通過由 該光導引板220的輸出面輸出。否則，該光朝該背面行進且在 通過該光導引板220輸出之前該光由光散射圖形224分散。因為 分散顆粒222的密度在離該光入射面較遠時為較高，輸出光的 密度在離該光入射面較遠時亦為較高。因此，入射光面與遠離 該光入射區域之區域的密度能均勻地形成。 藉著在光導引板222該光散射圖形224的形成，以及藉著於 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -14- 1294054 A7 B7 五、發明說明（12) (請先閱讀背面之注意事項再填寫本頁) 光輸出面與背面之間内部該分散顆粒222的分佈，光的洩漏減 少且改善光的亮度。在光輸入至光導引板220之中，直接反射 自該光散射圖形224之光I以及光III通過該光導引板220之輸出 面輸出。朝光導引板220之輸出面行進之光I以及光IV與分散顆 粒222接觸。然後光1通過該光導引板220之輸出面輸出，且光 IV朝該光導引板220背面行進並在光VI通過該光之輸出面輸出 之前自光分散圖形224反射。 第6 A至6 D圖為常見的背光總成與本發明背光總成之間亮 度的比較圖。 第6A圖為表示一具有光導引板而無光散射圖形與分散顆 粒之第一背光總成的亮度圖。第6B圖為表示一具有形成光分散 圖形的光導引板之第二背光總成的亮度圖。第6C圖表示一具有 形成該分散顆粒的光導引板之第三背光總成的亮度圖。第6D 圖為表示一具有形成光分散圖形與分散顆粒的光導引板之第 四背光總成的亮度圖。 通常當該第二背光總成的亮度設為100%時，該第一、第 三以及第四背光總成的亮度經測量相對為1〇%、4〇%以及 120%。 經濟部智慧財產局員工消費合作社印製 因此’相較於該等第一至第三背光總成。該具有形成光分 散圖形與分散顆粒的光導引板之第四背光總成的亮度獲得改 善。 一具有形成該分散顆粒的光導引板之第三背光總成不能 藉由與該分散顆粒的接觸以該光輸出面的方向輸出朝該光導 引板背面分散的光，以至於亮度降低。在具有形成光分散圖形 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -15· 1294054 A7 Γ ^ -----------—-—一——----------- 五、發明說明（I3) 之第二背光總成中，光通過光導引板側洩漏以至於光效能降 低。 然而，在具有形成光分散圖形與分散顆粒的光導引板之第 四背光總成中，該朝光導引板背面分散的光其藉由與該分散顆 粒的接觸能以該輸出面的方向由散射圖形輸出該光，因此改善 亮度。此外，避免光由光分散顆粒通過光導引板洩漏，因此改 善光效能。 本發明之背光總成能應用於不同的電子設備，如筆記型電 腦、電子計算機以及具解碼器之數位相機。 雖然本發明之較佳具體實施例已描述’經由本發明熟習此 技藝者將了解不限於描述之較佳具體實施例，可藉由所附申請 專利範圍所定義之本發明的精神及領域做不同的改變與調整。 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） •16- 1294054 A7 B7 五、發明說明（I4) 元件標號對照 420 底部架 450 支持板 100 燈單元、顯示單元 500 輸入裝置 110 燈、顯示面板 510 鍵盤 111 薄膜電晶體基板 520 滑鼠 112 彩色渡波1§基板 600 機體 120 燈反射器、源側印刷 700 螢幕 電路板 900 電腦系統 121 源側帶狀媒介組 A 顯示部件 經濟部智慧財產局員工消費合作社印製 130 閘極側軟線路板 131 閘極側帶狀媒介組 200 光導引單元、背光總 成 210 光導引板、燈 212 散射油墨圖形、燈反 射器 220 反射板、光導引板 222 分散顆粒 224 散射圖形 230 散射片、反射板 240 光聚焦片、光學片 400 框 410 頂部架 --------------------訂---------線^^ (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -17-V. DESCRIPTION OF THE INVENTION (6) Brief Description of the Printed Phoenix of the Intellectual Property Office of the Intellectual Property Office of the Ministry of Economic Affairs, the above objects and other advantages of the present invention will become apparent by the detailed description of the specific embodiments and with reference to the accompanying drawings, wherein: 1 is a view showing a general backlight assembly perspective 131 for a liquid crystal display device, and FIG. 2 is a front view of the backlight assembly shown in FIG. 1 along "ai_a2," a line cut; 3 is a schematic view of a liquid crystal display device according to an embodiment of the present invention; FIG. 4 is a schematic exploded view of a liquid crystal display device according to an embodiment of the present invention; The present invention is a front view of a backlight assembly of a specific embodiment; and 6A to 6DSI are brightness comparison diagrams between a common backlight assembly and the backlight assembly of the present invention. The present invention will be described in detail with reference to the accompanying drawings. The backlight assembly used in the computer screen in the present application is explained as an example of the backlight assemblies. FIG. 3 is a specific embodiment according to the present invention. Liquid crystal display A schematic exploded view of the device is shown in Fig. 3, a computer system 9 has an input device 5 〇〇, the input device is 297 mm) ----------*------ ---Order---------Line-* (Please read the note on the back and fill out this page) 1294054 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed A7 B7__ V. Invention description (7) The 500 has a keyboard 510 and a mouse 520, a body 600 having logic and computing circuits and storage means, and a screen 700 for displaying image information. The data input by the input device 500 is calculated and calculated by the body 600. The circuit is processed and stored in the storage device or output to the screen 700. The screen 700 is a liquid crystal display device capable of reducing power waste, and a lightweight and thin structure. The liquid crystal display device includes an image display component A and a A frame 400 for accommodating the image display unit A. A support plate 450 is formed on the lower part of the frame 400 to support the screen 700. The frame 400 has a bottom frame 420 having a rectangular annular receiving space and an opening member The top frame 410 is used to set the image display component A. The bottom frame 420 is coupled to the top frame 410 to form the frame 400. Fig. 4 is a schematic exploded view of a liquid crystal display device according to an embodiment of the present invention. Referring to Fig. 4, the liquid crystal display device 700 includes a display unit 100 for displaying an image, a backlight assembly 200 for providing light to the display unit 100, a bottom frame 420 for accommodating the display unit 100 and the backlight assembly 200, and for fixing the display The unit and the backlight assembly are disposed on the top frame 410 of the bottom frame 420. The display unit 100 includes a liquid crystal display panel 110 for displaying the image, a source side printed circuit board 120 for providing a driving signal to the data column, a source side strip medium group 121 for detecting the data driving signal time, a gate side flexible circuit board 130 for providing a driving signal to a gate column, and a detecting the gate driving signal The gate side media group 131 of the time. The liquid crystal display panel 110 is composed of a thin film transistor substrate 111 and a color filter substrate. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -----!.f----- -- *Book --------- Line · (Please read the note on the back and fill out this page) -10- 1294054 Ministry of Economic Affairs Intellectual Property Bureau employee consumption cooperative printed A7 B7_ V. Invention description (8 And a liquid crystal (not shown) interposed between the thin film transistor substrate 111 and the color filter substrate 112. The thin film transistor substrate 111 is formed of a glass transparent substrate and a matrix thin film transistor. The data is listed as a source terminal connected to the thin film transistor substrate 111 and the gate column is connected to the gate terminal of the thin film transistor substrate 111. Further, a pixel electrode made of indium tin oxide (ITO) is connected to the anode terminal of the thin film transistor substrate 111. The light passes through the color filter substrate 112, and the red, green and blue pixels are formed by a thin film manufacturing method. A common electrode made of ITO is overlaid on the front part of the color filter substrate 112. When electric power is supplied to the gate terminal and the source terminal of the thin film transistor substrate 111, an electric field is formed between the pixel electrode of the color filter substrate 112 and the common electrode. The electric field changes the angle between the liquid crystal particles between the thin film transistor substrate 111 and the color filter substrate 112, so that the light transmission rate is changed to obtain a desired pixel. At this time, in order to control the driving signal and the timing signal supplied to the data column and the gate, a source side strip-shaped medium group 121 having a driving integrated circuit and a gate side strip-shaped medium group are provided. The lighted assembly 200 is provided below the display unit 100 to uniformly emit the light to the display unit 100. The light assembly 200 is composed of a light unit and a light guide unit. The lamp unit includes a lamp 210 for generating light and a light reflector 212 for enclosing the lamp. The light guiding unit includes a light guiding plate 220, a reflecting plate 230, and an optical sheet 240. The lamp 210 is preferably a cold cathode ray tube. The lamp is located on one or both sides of the light guiding plate 220. Light is generated from the lamp 210 and input to the light guiding plate 220. This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) ------------------ Order---------- *5 ^ (Please read the note on the back and fill out this page) -11- A7 1294054 B7___ V. Description of the Invention (9) The lamp reflector 212 reflects the light to the light guiding plate 220. The light guiding plate 220 is a size corresponding to the size of the liquid crystal display panel 110 and is located below the liquid crystal display panel 110. Light generated from the lamp 210 is guided to the display unit 100 by the light guiding plate 220. In order to shift the direction of light to the liquid crystal display panel 110, a scattering pattern having a dot pattern is printed on the back surface of the light guiding plate 220. Dispersed particles for dispersing the light are distributed on the light guiding plate. Therefore, the light straight into the light guiding plate 220 is dispersed by being in contact with the dispersed particles, and is scattered toward the light output surface by the scattering pattern to prevent light leakage and improve the brightness of the light. A reflective panel 230 for enhancing light efficiency is located below the light guiding plate 220. The reflecting plate 230 reflects the light leaking from the light guiding plate 220 toward the light guiding plate 220. A plurality of optical sheets 240 are provided on the light guiding plate 20 such that light incident from the light guiding plate 220 to the liquid crystal display panel is uniformly formed. The optical sheet 240 includes a diffusion sheet for scattering light input to the light guiding plate 220, a light focusing sheet for focusing the scattered light to the liquid crystal display panel 110 in a vertical direction, and a protection for The protective sheet on the surface of the light focusing sheet. The backlight assembly 200 and the display unit 100 included in the bottom frame 420 are substantially stacked on the bottom of the bottom frame 420. The bottom frame 420 has an outer shape of a hexagonal box or a rectangular annular shape, and the upper portion of the bottom frame 420 is open. That is, the bottom frame 420 has four walls and a bottom surface. This power is allowed to be switched to the opening of one of the lamps 210 to the side wall. After the display unit 100 and the backlight assembly 200 are received in the bottom member 420, the top member 410 is coupled to the bottom member 420 to fix the display unit 100 and the backlight total paper size to the Chinese National Standard (CNS) A4 specification (210 X). 297 mm) ----------I -------- order --------- line ^ one ^ (please read the notes on the back and fill out this page) Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed -12- 1294054 Ministry of Economic Affairs Intellectual Property Bureau Staff Consumer Cooperative Printed A7 B7__ V. Invention Description (l〇) 200 is at the bottom of the bottom part 420. The top member 410 also has a hexagonal shape that fits into the bottom member 420. An upper portion of the top member 410 is open to expose the liquid crystal display panel 110, and one of the sidewalls of the top member 410 is vertically curved to cover a surrounding member of the display unit 210. A support plate for supporting the top member 410 is integrally formed with the top member 410. As described above, the assembly of the liquid crystal display device 700 of the present invention is completed by coupling the top member 410 to the bottom member 420 including the display unit 100 and the backlight assembly 200. Hereinafter, the structure and function of the liquid crystal display panel 220 will be described in detail. Figure 5 is a cross-sectional view showing a backlight assembly in accordance with an embodiment of the present invention. As described above, the backlight assembly 200 has a planar light guide plate 22 of a predetermined thickness, and a pair of lamps 210 located at both side ends of the light guide plate 220. The light guiding plate 220 guides light from the lamp 210 toward the display unit 100. In order to change the direction of the light toward the liquid crystal display panel 110, a scattering pattern 224 having a fine outline is printed on the back surface of the light guiding plate 220. The dispersed particles 220 for dispersing the light are distributed on the light guiding plate 220. The light scattering pattern 224 consists essentially of polymethyl methacrylate (PMMA). In order to increase its adhesion, polyvinyl alcohol (PVA) is added to PMMA. After dissolving PMMA and PVA by using an organic solvent, an ink of a mixed optical dispersant is printed on the back surface of the light guiding plate 220 by screen printing. It is also possible to directly form a dispersing member to the light guiding plate 220. In addition, the incident light can be reflected via a prismatic aperture. The light energy is output by coating a dispersing agent on the reflecting surface. The holes may be of different shapes such as a convex lens shape, a trapezoidal shape, or a hexagonal shape. This paper scale applies to China National Standard (CNS) A4 specification (210 X 297 mm) ------------------- Order--------- Line ^ |^ (Please read the note on the back and fill out this page) -13- 1294054 A7 V. Invention Description (11) (Please read the note on the back and fill in this page first) The light reflection pattern 224 is confusingly reflected to the input. The light of the light guiding plate 220. Therefore, the light input to the light output face of the light guiding plate 220 has an incident angle smaller than the critical angle of the light guiding plate 210, so that the quality of light outputted toward the liquid crystal display panel 110 is improved. Moreover, the size of the light scattering pattern 224 is such that the area of the light-scattering pattern 224 is relatively small such that the amount of scattered light toward the output surface is reduced. On the other hand, the light scattering pattern 224 remote from the lamp 210 is relatively large such that the amount of scattered light toward the output surface increases. Therefore, the light uniformity of the output surface of the light guiding plate 220 is improved. Further, the dispersed particles 222 distributed on the light guiding plate 220 are integrally formed with the light guiding plate 220. The dispersed particles 222 are organic polymers containing, for example, PMMA, which exert an influence on the characteristics of the light and can change the direction of the leaked light. Since the dispersed particles 222 are formed by using fine particles, the dispersed particles 222 have high dispersion efficiency and do not require a large space in the light guiding plate 22〇. Preferably, the total amount of the dispersed particles 222 is not more than 10% of the total amount of the light guiding plate 220. The Ministry of Economic Affairs, the Intellectual Property Office, the employee consumption cooperative, and the distribution density of the dispersed particles on the light incident surface. It is higher than the distribution density of the dispersed particles on the side surface, so that the uniformity of light can be further improved. In the light guiding plate 220, the light continues to travel straight in contact with the dispersed particles 222 and is output by the output face of the light guiding plate 220. Otherwise, the light travels toward the back side and is scattered by the light scattering pattern 224 before being output through the light guiding plate 220. Since the density of the dispersed particles 222 is higher when it is farther from the light incident surface, the density of the output light is also higher when it is farther from the light incident surface. Therefore, the density of the incident light surface and the region away from the light incident region can be uniformly formed. By the formation of the light-scattering pattern 224 on the light guiding plate 222, and by the Chinese paper standard (CNS) A4 specification (210 X 297 mm) by the paper scale, -14-1294054 A7 B7 12) (Please read the precautions on the back and fill in this page.) The distribution of the dispersed particles 222 inside the light output surface and the back surface reduces light leakage and improves the brightness of the light. In the light input to the light guiding plate 220, the light I and the light III directly reflected from the light scattering pattern 224 are output through the output surface of the light guiding plate 220. The light I and the light IV traveling toward the output surface of the light guiding plate 220 are in contact with the dispersed particles 222. Light 1 is then output through the output face of the light guide plate 220, and light IV travels toward the back of the light guide plate 220 and is reflected from the light dispersion pattern 224 before the light VI is output through the output face of the light. Figures 6A through 6D are graphs comparing the brightness between a conventional backlight assembly and the backlight assembly of the present invention. Fig. 6A is a graph showing the luminance of a first backlight assembly having a light guiding plate without a light scattering pattern and dispersed particles. Fig. 6B is a graph showing the luminance of a second backlight assembly having a light guiding plate forming a light-scattering pattern. Fig. 6C is a view showing the luminance of a third backlight assembly having a light guiding plate for forming the dispersed particles. Fig. 6D is a graph showing the luminance of a fourth backlight assembly having a light guiding plate which forms a light-scattering pattern and dispersed particles. Generally, when the brightness of the second backlight assembly is set to 100%, the luminances of the first, third, and fourth backlight assemblies are measured to be relatively 1%, 4%, and 120%. The Intellectual Property Office of the Ministry of Economic Affairs printed the employee cooperatives so that it is compared to the first to third backlight assemblies. The brightness of the fourth backlight assembly having the light guiding plate forming the light-scattering pattern and the dispersed particles is improved. A third backlight assembly having a light guiding plate for forming the dispersed particles cannot output light dispersed toward the back surface of the light guiding plate in the direction of the light output surface by contact with the dispersed particles, so that the brightness is lowered. In the paper with the formation of light dispersion pattern, the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -15· 1294054 A7 Γ ^ ----------------------- ---------- V. In the second backlight assembly of the invention (I3), light leaks through the side of the light guiding plate to reduce the light efficiency. However, in the fourth backlight assembly having the light guiding plate forming the light dispersing pattern and the dispersed particles, the light dispersed toward the back surface of the light guiding plate can be in the direction of the output surface by contact with the dispersed particles This light is output by the scattering pattern, thus improving the brightness. In addition, light is prevented from leaking from the light-scattering particles through the light guiding plate, thereby improving light efficiency. The backlight assembly of the present invention can be applied to various electronic devices such as notebook computers, electronic computers, and digital cameras with decoders. Although the preferred embodiment of the present invention has been described, it will be understood by those skilled in the art that the present invention is not limited to the description of the preferred embodiments. Changes and adjustments. (Please read the notes on the back and fill out this page.) Ministry of Economic Affairs, Intellectual Property Bureau, Staff and Consumer Cooperatives Printed on this paper scale, applicable to China National Standard (CNS) A4 specification (210 X 297 mm) • 16-1294054 A7 B7 V. DESCRIPTION OF THE INVENTION (I4) Component Label Control 420 Bottom Rack 450 Support Plate 100 Lamp Unit, Display Unit 500 Input Device 110 Lamp, Display Panel 510 Keyboard 111 Thin Film Transistor Substrate 520 Mouse 112 Color Wave 1 § Substrate 600 Body 120 Lamp Reflector , source side printing 700 screen circuit board 900 computer system 121 source side strip medium group A display parts economic department intellectual property bureau employee consumption cooperative printing 130 gate side flexible circuit board 131 gate side strip medium group 200 light guide Unit, backlight assembly 210 light guiding plate, lamp 212 scattering ink pattern, lamp reflector 220 reflecting plate, light guiding plate 222 dispersed particles 224 scattering pattern 230 scattering sheet, reflecting plate 240 light focusing sheet, optical sheet 400 frame 410 Top frame -------------------- Order --------- Line ^^ (Please read the note on the back and fill in this page) Paper scale Applicable to China National Standard (CNS) A4 specification (210 X 297 mm) -17-