TWI220936B

TWI220936B - Polarized light source device and backlight module for LCD

Info

Publication number: TWI220936B
Application number: TW91136762A
Authority: TW
Inventors: Wei-Chou Chen; Kei-Hsiung Yang
Original assignee: Hannstar Display Corp
Priority date: 2002-12-16
Filing date: 2002-12-16
Publication date: 2004-09-11
Also published as: TW200411216A

Abstract

There is provided a polarized light source device, which includes: a light source, a reflector, a transparent substrate, an anti-reflective layer and plural metal grids. The reflector surrounds the light source for reflecting light, and the reflector has an opening to enable light to pass through. The transparent substrate is configured on the opening. The anti-reflective layer is configured on the transparent substrate. The metal grids are configured on the anti-reflective layer to enable light with specific polarized direction to pass through the metal grids.

Description

1220936 案號 911367621220936 Case number 91136762

五、發明說明（1) 【發明所屬之技術領域】本發明係關於一種偏極光源裝置，更特別係有關用於液晶顯示器之一種背光模組，用以提供偏極化光線並具有高的穿透率。、…间 [先前技術】如第1圖所示’其顯示習用液晶顯示器（L c d )裝置之結構。一般而言’該液晶顯示器裝置包含一液晶二示器=板 1 〇，其包含兩基板中間設有液晶材料、一背光模組2 〇配置於該液晶面板1 0之下方、以及外殼11及1 2。該背光模組2 0係配置以將一光源所發出之光線，均勾的分配至該液晶面板1 0之表面上。用於液晶顯示器之背光模組2 0 —般可分為直下光源型式，以及側邊光源型式。第2圖係顯示該背光模組2 0為一種直下式背光模組2 1，即為沿著第1圖中剖面線2 - 2之剖面視圖。該直下式背光模組21包含一外殼70，其具有一反射片60配置於其底部表面，以及諸如冷陰極管之類的燈管5 0，位於其内部、一擴散片40位於該外殼70上、以及棱鏡片30配置於該擴散片40 上。 ’、第3圖係顯示該背光模組2 〇為一種側邊式背光模組2 2，即為沿著第1圖中剖面線2-2之剖面視圖。該側邊式背光模組22包含一導光板8〇、一燈管5〇加裝於該導光板go之至少一側邊、以及一U形反射器61環繞該燈管50。該反射器61 之一開口部分係固定於該導光板8 〇之側邊，一反射片6 0係固定於該導光板80之底部，一擴散片40固定於該導光板80V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a polarized light source device, and more particularly to a backlight module for a liquid crystal display, which is used to provide polarized light and has a high transmittance. Transmission rate. ... [Prior art] As shown in Fig. 1 ', it shows the structure of a conventional liquid crystal display (L c d) device. Generally speaking, the liquid crystal display device includes a liquid crystal display device = board 1 0, which includes a liquid crystal material disposed between two substrates, a backlight module 20 disposed below the liquid crystal panel 10, and housings 11 and 1. 2. The backlight module 20 is configured to evenly distribute light emitted from a light source to the surface of the liquid crystal panel 10. The backlight module set 20 for liquid crystal displays can be generally divided into a direct light source type and a side light source type. FIG. 2 shows that the backlight module 20 is a direct type backlight module 21, that is, a cross-sectional view taken along the section line 2-2 in FIG. The direct type backlight module 21 includes a housing 70 having a reflecting sheet 60 disposed on a bottom surface thereof, and a lamp tube 50 such as a cold cathode tube, which is located inside thereof, and a diffusion sheet 40 located on the housing 70. The prism sheet 30 is disposed on the diffusion sheet 40. ′, FIG. 3 shows that the backlight module 20 is a side-type backlight module 22, that is, a cross-sectional view taken along section line 2-2 in FIG. The side-type backlight module 22 includes a light guide plate 80, a lamp tube 50 attached to at least one side of the light guide plate go, and a U-shaped reflector 61 surrounding the lamp tube 50. An opening portion of the reflector 61 is fixed to the side of the light guide plate 80, a reflection sheet 60 is fixed to the bottom of the light guide plate 80, and a diffusion sheet 40 is fixed to the light guide plate 80.

第4頁 00597-2.ptc 1220936 案號 91136762 曰修- 五、發明說明（2) 上，及一稜鏡片30固定於該擴散板4〇上。該導光板80具有一印刷的點狀或V形凹槽的圖案82，位於其中至少一表面上，用以將該導光板8 〇中之光線散射而照党該液晶顯示器面板1 〇。一般而言，導光板8 〇上之點狀、V形凹槽之圖案82可以PMMA壓延方式或射出方式成形。該擴散片40係配置於該導光板80上，通常該擴散片4〇係以半透明之PET或聚碳酸酯（p〇iyCarb〇nate ;pC)、聚對笨二甲酸二乙醋塑膠（PET)所製造，用以使由該導光板射出的光線更加均勻化。該稜鏡片3 0係配置於該擴散片4 〇上，用以將該擴散片4 0所射出之光線，聚集在垂直於該稜鏡片30的方向上。 ' 綜前所述，由於液晶顯示器面板10具有偏光板，用以將特定偏光方向之光線導入該液晶顯示器面板丨〇，並吸收另一偏光方向之光線’故光線通過偏光板時將損失約5 〇 %的光學能量。因此’ 一偏光循環膜（p〇larizati〇n Recycle Film)35典型上會配置於該稜鏡片3〇上，用以反射該另一偏光方向之光線’在藉由下方光學元件的反射，變化偏光方向後’再加以循環利用，藉此提高液晶顯示器之亮度。然而’说述之偏光循環膜，通常係購自美國明尼蘇達州之 3MTM 公司’商品名為Dual Brightness Enhancement Film (DBEF)，且相對上可增加液晶顯示器的亮度至大約 1 6 0 -1 7 0 % ’但該偏光循環膜係相當昂貴的，且在液晶面板愈來愈大尺寸發展下，該製造成本將大幅增加。一般而言’液晶顯示器之背光模組必須滿足高的能量效Page 4 00597-2.ptc 1220936 Case No. 91136762 Revision-V. Description of the invention (2), and a cymbal 30 is fixed on the diffusion plate 40. The light guide plate 80 has a printed dot-shaped or V-shaped groove pattern 82 on at least one of the surfaces thereof for scattering the light in the light guide plate 80 to illuminate the liquid crystal display panel 10. In general, the dot-shaped, V-groove pattern 82 on the light guide plate 80 can be formed by the PMMA rolling method or the projection method. The diffusion sheet 40 is disposed on the light guide plate 80. Generally, the diffusion sheet 40 is made of translucent PET or polycarbonate (p0yyCarbonate; pC), polyethylene terephthalate (PET) ) To make the light emitted by the light guide plate more uniform. The diaphragm 30 is disposed on the diffusion sheet 40 to collect the light emitted by the diffusion sheet 40 in a direction perpendicular to the prism sheet 30. '' In summary, since the liquid crystal display panel 10 has a polarizing plate for introducing light of a specific polarization direction into the liquid crystal display panel and absorbing light of another polarization direction ', the light will lose about 5 when passing through the polarizing plate. 〇% optical energy. Therefore, 'a polarization recycling film (p〇larization Recycle Film) 35 is typically arranged on the cymbal 30 to reflect the light in the other polarization direction', and the polarization is changed by the reflection of the optical element below. After the direction ', it is recycled to improve the brightness of the LCD. However, 'the polarized recycling film is usually purchased from 3MTM, Minnesota, USA' under the trade name Dual Brightness Enhancement Film (DBEF), and can relatively increase the brightness of the liquid crystal display to about 16 0 -1 7 0% 'But the polarizing recycling film system is quite expensive, and the manufacturing cost will increase significantly with the growing size of liquid crystal panels. Generally speaking, the backlight module of a liquid crystal display must meet high energy efficiency.

00597-2.ptc 第5頁 !22〇936 ___案號91136762_年月曰铬庀__ 五、發明說明（3) 率、增加螢幕亮度、提供均勻照度、降低電能消耗、降低製造成本、同時減小體積等等的需求。先前技術中已有許多的努力以試圖滿足前述的要求，舉例而言，諸如2 0 0 〇年 12月26日頒予Lee之美國專利第6, 1 64, 790號、1 995年12月 1 9日頒予Hooker等人之美國專利第5,477,422號、以及 1 99 6年1月16日頒予Ciupke等人之美國專利第5, 485, 354 號。再者，於2000年9月19日頒予Perkins等人之美國專利第 6，122，103號專利’標題為”用於可見光光譜之寬頻帶金屬格線偏光器（Broadband Wire Grid Polarizer For The Visible Spectrum)”，併入本文以為參考，其揭示一種金屬格線之偏光器，於整個可見光光譜皆提供高的穿透及反射效率。本申請人於20 02年7月26日提出申請之第〇9 1 1 1 7235號申請案’標題為’’平面光源裝置及用於液晶顯示器之背光模組π ’揭示一種背光模組，具有金屬格線之偏光器，此一專利申請案併入本文以為參考。習用之金屬格線偏光器9 〇大體上具有玻璃製造之一透明基板92與配置於其上之金屬格線94，顯示於第4圖中。再參考第5圖，其係為該金屬格線94對於垂直於金屬格線極化光（P-polarization)及平行金屬格線極化光 (S-p〇larizati〇n)之穿透率（Tp、Ts)及反射率、Rs)對應於該金屬格線94之寬度w與間距p之比例q之圖形，其中。亥金屬格線94之厚度T約為〇·ι ，入射光波長為0.545 //00597-2.ptc Page 5! 22〇936 ___Case No. 91136762_Year Cr__ V. Description of the invention (3) rate, increase screen brightness, provide uniform illumination, reduce power consumption, reduce manufacturing costs, At the same time reduce the need for volume and so on. Many efforts have been made in the prior art to attempt to meet the aforementioned requirements, such as, for example, U.S. Patent No. 6,164,790 issued to Lee on December 26, 2000, December 1, 995 U.S. Patent No. 5,477,422 issued to Hooker et al. On 9th, and U.S. Patent No. 5,485,354 issued to Ciupke et al. On January 16, 1996. Furthermore, U.S. Patent No. 6,122,103 issued to Perkins et al. On September 19, 2000 entitled "Broadband Wire Grid Polarizer For The Visible" for the visible light spectrum Spectrum ", incorporated herein by reference, discloses a polarizer with a metal grid that provides high transmission and reflection efficiency throughout the visible light spectrum. The applicant's application No. 091 1 1 7235, filed on July 26, 2002, entitled 'Planar light source device and backlight module for liquid crystal display π' discloses a backlight module having A metal grid polarizer, this patent application is incorporated herein by reference. The conventional metal grid polarizer 90 has a transparent substrate 92 made of glass and a metal grid 94 disposed thereon, as shown in FIG. 4. Referring to FIG. 5 again, it is the transmission rate (Tp, Tp, Ts), reflectance, and Rs) correspond to the graph of the ratio q of the width w to the pitch p of the metal grid line 94, among which. The thickness T of the Hai metal grid line 94 is about 0 · ι, and the incident light wavelength is 0.545 //

00597-2.ptc 第6頁 Ϊ220936 ---案號91136762 年月日修正 — ..................... 1 ·'· ~ 一五、發明說明（4) m (綠光）。該比例Ω為0 · 5〜0 · 6之間，係製造上較易於達成之範圍，然而垂直於金屬格線極化光（P - ρ 〇 1 a r i z a t i ο η)之穿透率Tp於此一範圍係相對上較低的。有鑑於此，便有需要提供一種光源及/或背光模組，用於液晶顯示器中，能夠克服前述的缺點。【發明内容】本發明之一目的係提供一種偏極化光源，用以照亮液晶顯示器面板，藉此提高該液晶顯示器之能量利用率。為達上述目的，本發明提供一種偏極化光源裝置，包含：一光源、一反射器、一透明基板、一抗反射層、以及複數個金屬格線。該反射器係環繞該光源，用以反射光線，且該反射器具有一開口，使該光線穿過。該透明基板係配置於該開口處。該抗反射層係配置於該透明基板上。該金屬格線係配置於該抗反射層上，用以使具有特定偏極方向之光線通過該金屬格線。根據本發明之該偏極化光源係可安裝於一液晶顯示器中’用以照亮該液晶顯示器之液晶顯示器面板。因此，根據本發明之偏極化光源，由於具有偏光元件，故可提供偏極化的光線，且不致降低能量的利用率。又，此一偏極化之光線可直接通過液晶顯示器之偏光膜，而、咸少遠偏光膜所吸收之光線’並因此提高整體液晶顯示哭之能量利用率。故，根據本發明之背光模組或光源，其^需要使用昂貴的光學膜片，便能夠提高整體液晶顯示器之能量利用率、增加液晶顯示器之照度、並降低該液晶顯示器00597-2.ptc Page 6Ϊ220936 --- Amendment No. 91136762 Month-Day Amendment-..................... Explanation (4) m (green light). The ratio Ω is between 0 · 5 ~ 0 · 6, which is a relatively easy range in manufacturing. However, the transmittance Tp of polarized light (P-ρ 〇 1 arizati ο η) perpendicular to the metal grid is here. The range is relatively low. In view of this, there is a need to provide a light source and / or a backlight module for use in a liquid crystal display, which can overcome the aforementioned disadvantages. SUMMARY OF THE INVENTION An object of the present invention is to provide a polarized light source for illuminating a liquid crystal display panel, thereby improving the energy efficiency of the liquid crystal display. To achieve the above object, the present invention provides a polarized light source device, including: a light source, a reflector, a transparent substrate, an anti-reflection layer, and a plurality of metal grid lines. The reflector surrounds the light source to reflect light, and the reflector has an opening through which the light passes. The transparent substrate is disposed at the opening. The anti-reflection layer is disposed on the transparent substrate. The metal grid lines are arranged on the anti-reflection layer, so that light having a specific polarization direction can pass through the metal grid lines. The polarized light source according to the present invention can be installed in a liquid crystal display 'to illuminate the liquid crystal display panel of the liquid crystal display. Therefore, according to the polarized light source of the present invention, since it has a polarizing element, it can provide polarized light without reducing the energy utilization rate. In addition, this polarized light can directly pass through the polarizing film of the liquid crystal display, and the light absorbed by the polarizing film can increase the energy utilization rate of the entire liquid crystal display. Therefore, according to the backlight module or the light source of the present invention, expensive optical films are needed, which can improve the energy utilization rate of the overall liquid crystal display, increase the illumination of the liquid crystal display, and reduce the liquid crystal display.

00597-2.ptc 第7頁 1220936 年修正月曰案號 911367fi? 五、發明說明（5) 之製造成本。為了 a襄本發明之上述和其他目的、特徵、和優點能更明顯，下文特舉本發明較佳實施例，並配合所附圖示，作詳細說明如下。【實施方式】現請茶考第6圖，其顯示根據本發明之偏極化光源裝置 1 0 0。该偏極化光源裝置丨〇〇包含一光源，例如一燈管 1 j 0、一反射器1 6 1環繞該燈管丨5 〇、及一偏光器丨9 2。該燈官150可為冷陰極射線管（c〇1(i cath〇de nu〇rescent lamp; CCFL) 〇再麥考第8圖，其顯示該偏極化光源裝置丨〇〇之該偏光器 192。该偏光器192具有一透明基板194、一抗反射層191配置於该透明基板1 9 4上、及金屬格線1 9 〇配置於該抗反射層 1 91上。該燈管1 5 〇所放射之光線入射至該透明基板丨9 4，再經過該抗反射層191，再由該金屬格線19〇射出。該透明基板1 9 4係由透明之材料所製造，諸如玻璃及壓克力樹脂 (Acrylic Resin ;ΡΜΜΑ)，其折射率為&。該抗反射層191 係由透明之介電材料所製造，諸如氮矽化物（s丨_Νχ )，其折射率為心。圖示之該抗反射層1 91係為一單一薄膜塗覆於该透明基板1 94上，但精於本技藝者將可瞭解，該抗反射層191亦可為多層膜，塗覆於該透明基板194上。該抗反射層1 9 1之折射率係介於該透明基板之折射率與複數個金屬格線組成之等效折射率屯之間，亦即& > n/'>na。就較佳之情況而言，該抗反射層1 9 1之折射率〜符合下列公式：00597-2.ptc Page 7 1220936 Amended month No. 911367fi? 5. The manufacturing cost of invention description (5). In order to make the above and other objects, features, and advantages of the present invention more apparent, the following describes the preferred embodiments of the present invention and the accompanying drawings in detail, as follows. [Embodiment] Please refer to FIG. 6 of the tea test, which shows a polarized light source device 100 according to the present invention. The polarized light source device includes a light source, such as a lamp tube 1 j 0, a reflector 16 1 surrounds the lamp tube 5 0, and a polarizer 9 2. The lamp officer 150 may be a cold cathode ray tube (c〇1 (i cath〇de nuorescent lamp; CCFL)), and then McCaw FIG. 8, which shows the polarizer 192 of the polarized light source device 丨〇〇 The polarizer 192 has a transparent substrate 194, an anti-reflection layer 191 disposed on the transparent substrate 194, and a metal grid line 190 disposed on the anti-reflection layer 191. The lamp tube 150 The radiated light is incident on the transparent substrate 9 4, passes through the anti-reflection layer 191, and is emitted from the metal grid line 19. The transparent substrate 1 9 4 is made of transparent materials such as glass and acrylic Resin (Acrylic Resin; PMMA), whose refractive index is &. The anti-reflection layer 191 is made of a transparent dielectric material, such as nitrogen silicide (s 丨 _Νχ), and its refractive index is at the heart. The anti-reflection layer 1 91 is a single thin film coated on the transparent substrate 1 94, but those skilled in the art will understand that the anti-reflection layer 191 may also be a multilayer film coated on the transparent substrate 194. The refractive index of the anti-reflection layer 191 is between the refractive index of the transparent substrate and a plurality of metal grid lines The equivalent refractive index between the village, i.e. & > n / '> na terms of preferred case, the refractive index of the antireflective layer 191 comply with the following formula ~:.

第8頁Page 8

I1H 00597-2.ptc 1220936 案號 91136762 五、發明說明（6) nm ^ /" ( na X ns ) 該抗反射層1 9 1之厚度d係符合下列公式： d ^ 1/4 X λ / nm 其中λ係為入射光之波長。實際上，對於玻璃或壓克力製造之該透明基板194及該金屬格線190，該抗反射層191較佳係以折射率大於丨.5之材料所製造，諸如折射率介於1 · 5與3之間。该金屬格線1 9 0係平行於該燈管1 5 0，並間隔開的成形於該抗反射層1 9 1上，如此使得垂直於該金屬線方向（亦即，垂直於該燈管150之縱向方向）之偏極光（p —p〇larizati〇n) 通過’並使的平行金屬線方向之極化光（S_p〇lariza^i〇n) 反射。根據本發明，該金屬格線1 9 〇較佳係由鋁、銀、銅、或合金金屬製造’其中敢佳者係為以銘製造。就較佳的情況而言，該金屬格線190之間距P係小於約300ηιη，該金屬格線190之厚度T係由約30至約20〇nm之間，且該金屬格線19() 之寬度W與該間距p之比例係由約〇 · 1至約〇 · 8之間。再請參考第9圖，其係為根據本發明之該偏光器1 9 2對於垂直於金屬格線極化光（P-po lari zat ion)及平行金屬格線極化光（S-polarization)之穿透率（Tp、Ts)及反射率 (Rp、Rs)對應於該金屬格線190之寬度w與間距p之比例Q 之圖形。該透明基板1 9 4係為玻璃所製，該金屬格線丨9 〇之厚度T約為〇·1 ’入射光波長為0.545 //m(綠光），且該抗反射層191係由氮矽化物（Si-Nx)所製造，其厚度d為I1H 00597-2.ptc 1220936 Case No. 91136762 V. Description of the invention (6) nm ^ / " (na X ns) The thickness d of the anti-reflection layer 1 9 1 conforms to the following formula: d ^ 1/4 X λ / nm where λ is the wavelength of the incident light. In fact, for the transparent substrate 194 and the metal grid line 190 made of glass or acrylic, the anti-reflection layer 191 is preferably made of a material with a refractive index greater than 1.5, such as a refractive index between 1.5 Between 3. The metal grid line 190 is parallel to the lamp tube 150, and is formed on the anti-reflection layer 191 at intervals, so as to be perpendicular to the direction of the metal wire (that is, perpendicular to the lamp tube 150). The polarized aurora (p — p〇larizati〇n) in the longitudinal direction) is reflected by the polarized light (S_p〇lariza ^ i〇n) in the direction of parallel metal lines. According to the present invention, the metal grid line 190 is preferably made of aluminum, silver, copper, or an alloy metal. Among them, the best one is made with an inscription. In a better case, the distance P between the metal grid lines 190 is less than about 300 nm, the thickness T of the metal grid lines 190 is from about 30 to about 20 nm, and the metal grid lines 190 are The ratio of the width W to the pitch p ranges from about 0.1 to about 0.8. Please refer to FIG. 9 again, which shows that the polarizer 1 9 2 according to the present invention is polarized light (P-po lari zat ion) perpendicular to the metal grid and S-polarization light (parallel metal grid). The transmittance (Tp, Ts) and reflectance (Rp, Rs) correspond to the pattern of the ratio Q of the width w of the metal grid line 190 to the pitch p. The transparent substrate 194 is made of glass, and the thickness T of the metal grid 丨 90 is about 0.1. The incident light wavelength is 0.545 // m (green light), and the anti-reflection layer 191 is made of nitrogen. Made of silicide (Si-Nx), its thickness d is

HH

00597-2.ptc 第9頁 1220936 __案號91136762___年月日_^_ 五、發明說明（7) 7 0nm。如圖所示，當該比例□位於〇· 5〜0· 6之間，垂直於金屬格線極化光之穿透率TP，可由於該抗反射層191的存在而提南。再參考第7圖，其顯示根據本發明之另一實施例之偏極化光源裝置1 0 0 ’ 。該光源裝置1 〇〇，與該光源裝置1 〇〇相類似，包含一燈管1 5 0 ’、一反射器1 6 1，環繞該燈管1 5 0，、及一偏光器192’ 。該偏光器192，具有金屬格線190,係垂直於該燈管1 5 0 ’，並間隔開的成形於該抗反射層丨9丨，上，如此使得平行於該金屬線方向之極化光（S-polarization)反射，並使得垂直於該金屬線方向（亦即，平行於該燈管1 5 〇之縱向方向）之偏極、光（P-p〇larizati〇n)通過。請參考第1 0圖，其顯示利用根據本發明之該偏極化光源裝置1 0 0之液晶顯示器2 0 0。該液晶顯示器2 0 0包含一液晶顯示器面板2 1 0以及一背光模組2 2 0。該液晶顯示器面板 2 1 0具有兩透明基板2 1 2、2 1 4，以及液晶材料2 1 6配置於其中。該液晶顯示器面板2 1 0之透明基板2 1 2、2 1 4之外側表面上分別具有偏光膜2 1 8、2 1 9，且其内側表面上具有開關元件（switching element)，用以改變液晶分子之排列，藉此產生影像。該背光模組220係為一側邊式背光模組，且作用為一平面光源，均勻的照射該液晶顯示器面板2 1 0。該背光模組 220包含根據本發明之該偏極化光源裝置1〇〇、一導光板 280大體上係為模形、以及多層之光學膜片，諸如擴散片 240及稜鏡片230。該擴散片240係用以使光線更加均勻。00597-2.ptc Page 9 1220936 __Case No. 91136762 _______________ 5. Description of the invention (7) 70 nm. As shown in the figure, when the ratio □ is between 0.5 and 0.6, the transmittance TP of polarized light perpendicular to the metal grid line can be raised to the south due to the existence of the anti-reflection layer 191. Referring again to FIG. 7, it shows a polarized light source device 100 'according to another embodiment of the present invention. The light source device 100 is similar to the light source device 100, and includes a lamp tube 150 ', a reflector 16 61, surrounding the lamp tube 150, and a polarizer 192'. The polarizer 192 has a metal grid line 190, which is perpendicular to the lamp tube 150 ′, and is formed on the anti-reflection layer 丨 9 丨 spaced apart, so that the polarized light parallel to the direction of the metal line (S-polarization) reflects and makes the polarized light and light (Pplarization) perpendicular to the direction of the metal line (that is, parallel to the longitudinal direction of the lamp tube 150) pass. Please refer to FIG. 10, which shows a liquid crystal display 2000 using the polarized light source device 100 according to the present invention. The liquid crystal display 200 includes a liquid crystal display panel 210 and a backlight module 220. The liquid crystal display panel 2 10 has two transparent substrates 2 1 2, 2 1 4 and a liquid crystal material 2 1 6 arranged therein. The transparent substrate 2 1 2 and 2 1 4 of the liquid crystal display panel 2 1 have polarizing films 2 1 8 and 2 1 9 on the outer surface and a switching element on the inner surface to change the liquid crystal. The arrangement of molecules produces an image. The backlight module 220 is a side-type backlight module, and functions as a planar light source to uniformly illuminate the liquid crystal display panel 210. The backlight module 220 includes the polarized light source device 100 according to the present invention, a light guide plate 280, which is generally in the shape of a mold, and a plurality of layers of optical films, such as a diffusion sheet 240 and a cymbal 230. The diffusion sheet 240 is used to make the light more uniform.

00597-2.ptc 第10頁 1220936 ____案號 91136762__年月_g_修正___ 五、發明說明（8) 該稜鏡片230可購自3MTM公司，商品名為BEF II (Brightness Enhancement Fi lm I I )，係用以使光線集中於垂直方向。該偏極化光源裝置1 〇〇所射出之光線，係經由該導光板 280之一入射面284射入該導光板280中。該導光板280具有散射元件2 8 2，諸如點狀圖案或v形凹槽的圖案，位於該導光板280之下表面上，用以將該導光板28〇中之光線散射而由該導光板2 80之上表面或出射面285射出，而成為一均勻的面光源’且照焭該液晶顯示器面板2 1 〇。該散射元件2 8 2 一般可以PMM A壓延方式或射出方式成形。該導光板28〇另具有反射鏡260、265，配置於其底面及末端，用以將光線反射回該導光板280。當然精於本技藝者將可瞭解，該液晶顯示器面板21〇上之偏光膜2 1 9之偏極方向應與該偏極化光源裝置1 〇〇之偏極方向相對應’如此以提咼該液晶顯示器1 〇〇之照度。一般而言，因為液晶顯示器之配置，故本發明之背光模組2 2 〇將特別適合用於橫向電場效應（In —plane —Switching)、垂直配向（Vertical A1 ignment)、及多區域垂直配向 (Multi-Domain Vertical Alignment)之薄膜電晶體（Thin00597-2.ptc Page 10 1220936 ____Case No. 91136762__Year Month_g_Amendment ___ 5. Description of the invention (8) The cymbal 230 can be purchased from 3MTM company under the trade name BEF II (Brightness Enhancement Fi lm II) is used to concentrate light in a vertical direction. The light emitted by the polarized light source device 100 is incident on the light guide plate 280 through an incident surface 284 of the light guide plate 280. The light guide plate 280 has a diffusing element 2 8 2, such as a dot pattern or a v-shaped groove pattern, which is located on the lower surface of the light guide plate 280 for scattering the light in the light guide plate 28. 2 80 is emitted from the upper surface or emitting surface 285, and becomes a uniform surface light source ', and illuminates the liquid crystal display panel 2 1 0. The scattering element 2 8 2 can be generally formed by a PMM A calendering method or an injection method. The light guide plate 28 has reflectors 260 and 265, which are arranged on the bottom surface and the ends thereof to reflect light back to the light guide plate 280. Of course, those skilled in the art will understand that the polarizing direction of the polarizing film 2 19 on the liquid crystal display panel 21 should correspond to the polarizing direction of the polarized light source device 100. Illumination of LCD monitor 1000. Generally speaking, because of the configuration of the liquid crystal display, the backlight module 2 2 0 of the present invention will be particularly suitable for use in lateral electric field effects (In-plane-Switching), vertical alignment (Vertical A1 ignment), and multi-region vertical alignment ( Multi-Domain Vertical Alignment)

Fi lm Transistor)液晶顯示器面板。凊參考第11圖，其顯示利用根據本發明之該偏極化光源叙置1 0 0之液晶顯不3 0 0。該液晶顯示器3 〇〇係大體上類似於6亥液曰曰顯示器2 0 0 ’其中相似的元件標示以相似的標號。該液晶顯示器300包含一液晶顯示器面板丨1〇以及一背Film Transistor) LCD panel.凊 Referring to FIG. 11, it is shown that a liquid crystal of 100 is displayed as 300 using the polarized light source according to the present invention. The liquid crystal display 300 is substantially similar to the display 60 ', and similar components are marked with similar numbers. The liquid crystal display 300 includes a liquid crystal display panel and a back panel.

00597-2.ptc 第11頁 1220936 且具有外殼370 ，可以提液晶顯示此，根據光學膜增加液晶〇非用以限之精神和之保護範 00597-2.ptc 案號 91136762 五、發明說明（9) 光模組320。該背光模組320係為直下式背光模組複數個偏極光源1〇〇(圖中所示為4個），配置於一中。 ' 綜前所述，根據本發明之背光模組或偏極光源 f偏極化的光線。此一偏極化之光線可直接通過器之偏光膜，而減少該偏光膜所吸收之光線。因本發明之背光模組或平面光源不需要使用昂貴的片:便能夠提高整體液晶顯示器之能量利用率、顯不器之照度、並降低該液晶顯示器之雖然本發明已以前述較佳實施；^ m任何熟習此技藝者，★不脫離；發；圍=;可作各種之更動與修改，本發明圍虽視後附之巾請專利範®所界定者為準。 1 第12頁 1220936 修正00597-2.ptc Page 11 1220936 and has a housing 370, you can mention the liquid crystal display, according to the optical film to increase the liquid crystal. ○ Non-limiting spirit and protection range 00597-2.ptc Case number 91136762 V. Description of the invention (9 ) Optical module 320. The backlight module 320 is a direct type backlight module. A plurality of polarized light sources 100 (four are shown in the figure) are arranged in one. '' In summary, the backlight module or polarized light source f according to the present invention is polarized light. This polarized light can directly pass through the polarizing film of the device, thereby reducing the light absorbed by the polarizing film. Because the backlight module or the flat light source of the present invention does not require the use of expensive sheets: it can improve the energy utilization rate of the overall liquid crystal display, the illuminance of the display, and reduce the liquid crystal display. ^ m Anyone who is familiar with this skill, ★ Do not leave; Send; Wai =; Various changes and modifications can be made. Although the present invention is subject to the attached towel, please define as defined in Patent Fan®. 1 Page 12 1220936 Corrections

MM 91136762 圖式簡單說明【圖式簡單說明】體透視展開意圖第1圖為根據先前技術之液晶顯示器之立MM 91136762 Brief description of the drawings [Simplified description of the drawings] Expansion of the body perspective Intention Figure 1 shows the standing position of a liquid crystal display according to the prior art.

圖為根據先前技術之直下式背光模組之沿面線2-2之剖面示意圖。 T 第3圖為根據先前技術之側邊式背光模組之沿幻圖面線2 - 2之剖面示意圖。第4圖為習用之金屬格線偏光器之剖面示意圖。第5圖為第4圖所示之金屬格線偏光器之穿透率及反射率對應於該金屬格線之寬度與間距之比例Q之圖形。第6圖為根據本發明之第—實施例之偏極化光源之橫剖面示意圖。第7圖為根據本發明之第二實施例之偏極化光源之橫剖面示意圖。第8圖為第6圖所示之該偏極化光源之偏光器之部分放大剖面示意圖。第9圖為第6圖所示之該偏極化光源之偏光器之穿透率及反射率對應於該金屬格線之寬度與間距之比例Ω之圖形。第1 〇圖為利用本發明之該偏極化光源之一液晶顯示器之剖面示意圖。第1 1圖為利用本發明之該偏極化光源之另一液晶顯示為之剖面示意圖。圖號說明： 1〇液晶顯示器面板 11 外殼The figure is a schematic cross-sectional view along the line 2-2 of the direct type backlight module according to the prior art. T FIG. 3 is a schematic cross-sectional view of the side-type backlight module according to the prior art, taken along line 2-2 of the magic map. Fig. 4 is a schematic sectional view of a conventional metal grid polarizer. Fig. 5 is a graph of the transmittance and reflectance of the metal grid polarizer shown in Fig. 4 corresponding to the ratio Q of the width and the pitch of the metal grid. Fig. 6 is a schematic cross-sectional view of a polarized light source according to a first embodiment of the present invention. Fig. 7 is a schematic cross-sectional view of a polarized light source according to a second embodiment of the present invention. FIG. 8 is a partially enlarged cross-sectional view of the polarizer of the polarized light source shown in FIG. 6. FIG. Fig. 9 is a graph of the transmittance and reflectance of the polarizer of the polarized light source shown in Fig. 6 corresponding to the ratio of the width and the pitch of the metal grid line, Ω. FIG. 10 is a schematic cross-sectional view of a liquid crystal display using one of the polarized light sources of the present invention. FIG. 11 is a schematic cross-sectional view of another liquid crystal display using the polarized light source of the present invention. Drawing number description: 1〇 LCD display panel 11 Housing

00597-2.ptc 第13頁 1220936 _案號91136762_年月日修正圖式簡單說明 12 外殼 20 背光模組 21 直下式背光模1 a 22 側邊式背光模組 30 稜鏡片 35 偏光循環膜 40 擴散片 50 燈管 55 支撐柱 60 反射片 61 U形的反射器 70 外殼 80 導光板 82 圖案 90 金屬格線偏光器 92 透明基板 94 金屬格線 100 偏極化光源裝置 150 燈管 161 反射器 190 金屬格線 191 抗反射層 192 偏光器 194 透明基板 100, 偏極化光源裝置 150, 燈管 161，反射器 190, 金屬格線 191，抗反射層 192, 偏光器 194, 透明基板 200 液晶顯示器 210 液晶顯示器面板 212 透明基板 214 透明基板 216 液晶材料 218 偏光膜 219 偏光膜 220 背光模組 230 棱鏡片 240 擴散片 260 反射鏡 265 反射鏡 280 導光板 282 散射元件 284 入射面 285 出射面00597-2.ptc Page 13 1220936 _Case No. 91136762_ Brief description of the correction chart 12 Case 20 Backlight module 21 Direct-type backlight module 1 a 22 Side-type backlight module 30 Cymbal 35 Polarizing recycling film 40 Diffusion sheet 50 Lamp tube 55 Support column 60 Reflector sheet 61 U-shaped reflector 70 Housing 80 Light guide plate 82 Pattern 90 Metal grid polarizer 92 Transparent substrate 94 Metal grid 100 Polarized light source device 150 Light tube 161 Reflector 190 Metal grid 191 anti-reflective layer 192 polarizer 194 transparent substrate 100, polarized light source device 150, lamp tube 161, reflector 190, metal grid 191, anti-reflective layer 192, polarizer 194, transparent substrate 200 liquid crystal display 210 Liquid crystal display panel 212 transparent substrate 214 transparent substrate 216 liquid crystal material 218 polarizing film 219 polarizing film 220 backlight module 230 prism sheet 240 diffusion sheet 260 reflection mirror 265 reflection 282 scattering element 280 of the light guide plate 284 faces the exit surface of the exit 285

00597-2.ptc 第14頁 1220936 _案號91136762_年月日修正圖式簡單說明 300 液晶顯示器 310 液晶顯示器面板 312 透明基板 314 透明基板 316 液晶材料 318 偏光膜 319 偏光膜 320 背光模組 330 棱鏡片 340 擴散片 370 外殼00597-2.ptc Page 14 1220936 _Case No. 91136762_ Brief Description of Correction Patterns 300 LCD Display 310 LCD Display Panel 312 Transparent Substrate 314 Transparent Substrate 316 Liquid Crystal Material 318 Polarizing Film 319 Polarizing Film 320 Backlight Module 330 Prism Sheet 340 diffuser sheet 370 housing

00597-2.ptc 第15頁00597-2.ptc Page 15

Claims

1220936 __案號 91136762_年月日修正___ 六、申請專利範圍 1 . 一種偏極化光源裝置，包含：一光源，用以產生光線，其中該光線具有一波長A ; 一反射器，環繞該光源，用以反射光線，其中該反射器具有一開口，使該光線穿過；一透明基板，配置於該開口處，且具有一折射率ns ; 一抗反射層，配置於該透明基板上，且具有一折射率n m ;以及複數個金屬格線，配置於該抗反射層上，用以使具有特定偏極方向之光線通過該金屬格線，且具有一等效折射率 na ° 2 ·依申請專利範圍第1項之偏極化光源裝置，其中該金屬格線係由鋁所製造。 3 ·依申請專利範圍第1項之偏極化光源裝置，其中製造該金屬格線之材料，係由鋁、銀、銅、及其合金所構成之群組中選出。 4·依申請專利範圍第1項之偏極化光源裝置，其中該金屬格線之間距係介於0與300nm之間。依申請專利範圍第1項之偏極化光源裝置，其中該金屬 H之厚度係介於30nm與20 0nm之間。1220936 __Case No. 91136762_ Year, month, and day of amendment ___ 6. Application for patent scope 1. A polarized light source device comprising: a light source for generating light, wherein the light has a wavelength A; a reflector, surrounds The light source is used for reflecting light, wherein the reflector has an opening through which the light passes; a transparent substrate disposed at the opening and having a refractive index ns; an anti-reflection layer disposed on the transparent substrate, And has a refractive index nm; and a plurality of metal grid lines are arranged on the anti-reflection layer, so that light with a specific polarization direction passes through the metal grid lines, and has an equivalent refractive index na ° 2 · according to The polarized light source device of the scope of application for item 1, wherein the metal grid is made of aluminum. 3. The polarized light source device according to item 1 of the scope of the patent application, wherein the material for making the metal grid is selected from the group consisting of aluminum, silver, copper, and alloys thereof. 4. The polarized light source device according to item 1 of the application, wherein the distance between the metal grid lines is between 0 and 300 nm. The polarized light source device according to item 1 of the application, wherein the thickness of the metal H is between 30 nm and 200 nm.

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屬之間 7格ΐΐϊί 第V員广偏極化光源裝置’其中該金屬之見度與間距之比例係介於0 · 5與0 · 6之間。 8射ί:請ίΓ範圍第1項之偏極化光源裝置，其中該抗反曰係以折射率介於1· 5與3之間的材料製造。 9射ΪΙ請專利範圍第1項之偏極化光源裝置，其中該抗反曰係亂矽化物（Si-Νχ)所製造。該抗反 2 μ依申請專利範圍第1項之偏極化光源裝置，豆中射層係為多層膜之結構。，、Υ 該抗反 M Jir 4申明、專利範圍第1項之偏極化光源裝置，其中成识^久、g斤射率之範圍係位於該透明基板之折射率盥該複數個金屬格線組成之等效折射率之間。 η 12.依申請專利範圍第}項之偏極化光源裝置，其中該抗反射層^折射率nm係由下列公式所計算： Πβ1 ' ’（ X ns )，其中\係為該透明基板之折射率，na係為該複數個金屬格線組成之等效折射率。圖 00597-2.ptc 第17頁 1220936 _案號91136762_年月曰修正_ 六、申請專利範圍 1 3.依申請專利範圍第1項之偏極化光源裝置，其中該抗反射層之厚度係由下列公式所計算： d 与 1/4 X λ / nm ，其中nm係為該抗反射層之折射率，λ係為該光線之波長。 1 4. 一種用於液晶顯示器之背光模組，用以照亮一液晶顯示器之液晶顯示器面板，包含：一偏極化光源，包含；一光源，用以產生光線’其中該光線具有一波長λ ; 一反射器，環繞該光源，用以反射光線，其中該反射器具有一開口，使該光線穿過一透明基板，配置於該開口處，且具有一折射率ns ; 一抗反射層，配置於該透明基板上，且具有一折射率η m ;以及複數個金屬格線，配置於該抗反射層上，用以使具有特定偏極方向之光線通過該金屬格線，且具有一等效折射率 na，以及一導光板，位於該液晶顯示器面板之下方，具有至少一入射面，面向該偏極化光源、複數個散射元件、及一出射面，其中該偏極化光源射出之光線係由該入射面進入該導光板，再經由該散射元件散射入射之光線，並由該出射面射出。Among the 7 grids, the Vth member's wide-polarized light source device ’, in which the ratio of the visibility of the metal to the spacing is between 0. 5 and 0. 6. 8 shots: Please refer to the polarized light source device in the first item of the range, wherein the anti-reflection is made of a material with a refractive index between 1.5 and 3. The 9th polarized light source device of claim 1 is patented, wherein the anti-reflection is made of silicide (Si-Nχ). The anti-reflective 2 μ is a polarized light source device according to item 1 of the scope of patent application, and the bean radiation layer is a multilayer film structure. , Υ The anti-reverse M Jir 4 statement, the first polarized light source device in the patent scope, in which the range of consciousness and emissivity is located on the refractive index of the transparent substrate and the plurality of metal grid lines The composition of the equivalent refractive index. η 12. The polarized light source device according to item} of the application, wherein the anti-reflection layer ^ refractive index nm is calculated by the following formula: Πβ1 '' (X ns), where \ is the refraction of the transparent substrate Ratio, na is the equivalent refractive index composed of the plurality of metal grid lines. Figure 00597-2.ptc Page 17 1220936 _ Case No. 91136762 _ month and month amended _ 6, the scope of patent application 1 3. The polarized light source device according to item 1 of the scope of patent application, wherein the thickness of the anti-reflection layer is Calculated by the following formula: d and 1/4 X λ / nm, where nm is the refractive index of the anti-reflection layer, and λ is the wavelength of the light. 1 4. A backlight module for a liquid crystal display used to illuminate a liquid crystal display panel of a liquid crystal display, comprising: a polarized light source including; a light source for generating light, wherein the light has a wavelength λ A reflector that surrounds the light source to reflect light, wherein the reflector has an opening through which the light passes through a transparent substrate and is disposed at the opening and has a refractive index ns; an anti-reflection layer is disposed at The transparent substrate has a refractive index η m; and a plurality of metal grid lines are arranged on the anti-reflection layer to allow light having a specific polarization direction to pass through the metal grid lines and have an equivalent refraction. The rate na and a light guide plate are located below the liquid crystal display panel and have at least one incident surface facing the polarized light source, a plurality of scattering elements, and an exit surface. The incident surface enters the light guide plate, and then the incident light is scattered by the scattering element, and is emitted from the exit surface.

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00597-2.ptc 第18頁 1220936 _案號91136762_年月日__ 六、申請專利範圍 1 5.依申請專利範圍第1 4項之用於液晶顯示器之背光模組，另包含：複數個光學膜片，配置於該導光板之該出射面與該液晶顯示器面板之間。 1 6.依申請專利範圍第1 5項之用於液晶顯示器之背光模組，其中該複數個光學膜片包含：至少一擴散片，用以分散該導光板射出之光線；以及至少一稜鏡片，用以使光線集中於垂直方向上。 1 7.依申請專利範圍第1 4項之用於液晶顯示器之背光模組，其中該金屬格線係由鋁所製造。 1 8.依申請專利範圍第1 4項之用於液晶顯示器之背光模組，其中製造該金屬格線之材料，係由鋁、銀、銅、及其合金所構成之群組中選出。 1 9.依申請專利範圍第1 4項之用於液晶顯示器之背光模組，其中該金屬格線之間距係介於0與30 Onm之間。 2 0.依申請專利範圍第1 4項之用於液晶顯示器之背光模組，其中該金屬格線之厚度係介於3 0 n m與2 0 0 n m之間。 2 1 ·依申請專利範圍第1 4項之用於液晶顯示器之背光模00597-2.ptc Page 18 1220936 _Case No. 91136762_Year_Month__ VI. Patent application scope 1 5. The backlight module for liquid crystal display according to item 14 of the patent application scope, including: An optical film is disposed between the exit surface of the light guide plate and the liquid crystal display panel. 16. The backlight module for a liquid crystal display according to item 15 of the scope of patent application, wherein the plurality of optical film sheets include: at least one diffusion sheet for dispersing light emitted from the light guide plate; and at least one diaphragm To focus the light in the vertical direction. 1 7. The backlight module for a liquid crystal display according to item 14 of the scope of the patent application, wherein the metal grid is made of aluminum. 1 8. The backlight module for liquid crystal display according to item 14 of the scope of patent application, wherein the material for making the metal grid is selected from the group consisting of aluminum, silver, copper, and alloys thereof. 19. The backlight module for a liquid crystal display according to item 14 of the scope of patent application, wherein the distance between the metal grid lines is between 0 and 30 Onm. 20. The backlight module for a liquid crystal display according to item 14 of the scope of the patent application, wherein the thickness of the metal grid is between 30 nm and 200 nm. 2 1 · Backlight mode for liquid crystal display according to item 14 of patent application

00597-2.ptc 第19頁 1220936 mi, 91136762 六、申請專利範圍與0· 8 組，其中該金屬格線之寬度與間距之比例係介於〇丄之間。、· 22.依申請專利範圍第14項之用於液晶顯示器與0· 6址’其中該金屬格線之寬度與間距之比例係介於、 ΰ之間。與3之間的材料製 23.依申請專利範圍第14項n夜晶顯示器之背光模組，其中該抗反射層係以折射率介於i 5 造。、· 24. 依申請專利範圍第14項之用於液晶顯示器之背光模組，其中該抗反射層係氮矽化物（Si_Nx)所製造。 25. 依申請專利範圍第14項之用於液晶顯示器之背光模組，其中該抗反射層係為多層膜之結構。 26. 依申請專利範圍第14項之用於液晶顯示器之背光模組，其中，抗反射層折射率之範圍係位於該透明基板之折射率與該複數個金屬格線組成之等效折射率之間。 27. 依申^專利範圍第14項之用於液晶顯示器之背光模組，.其^忒抗反射層之折射率〜係由下列公式所計算： nm ^ 3 & )，其中ns係為該透明基板之折射率，00597-2.ptc Page 19 1220936 mi, 91136762 6. Scope of patent application and Group 0.8, where the ratio of the width of the metal grid line to the spacing is between 0 丄. ·· 22. According to item 14 of the scope of the patent application, it is used for liquid crystal displays and 0. 6 sites', wherein the ratio of the width and pitch of the metal grid lines is between 、 and ΰ. Made of materials between 3 and 23. According to the backlight module of the 14th n-night crystal display in the scope of the patent application, the anti-reflection layer is made with a refractive index between i 5. 24. The backlight module for a liquid crystal display according to item 14 of the scope of patent application, wherein the anti-reflection layer is made of silicon silicide (Si_Nx). 25. The backlight module for a liquid crystal display according to item 14 of the application, wherein the anti-reflection layer is a multilayer film structure. 26. The backlight module for a liquid crystal display according to item 14 of the scope of patent application, wherein the range of the refractive index of the anti-reflection layer is located between the refractive index of the transparent substrate and the equivalent refractive index composed of the plurality of metal grid lines between. 27. The backlight module for liquid crystal display according to item 14 of the patent application. The refractive index of the anti-reflection layer is calculated by the following formula: nm ^ 3 &), where ns is the The refractive index of the transparent substrate,

00597-2.ptc 第20頁 1220936 _案號 91136762_年月日_«_ 六、申請專利範圍 na係為該複數個金屬格線組成之等效折射率。 28.依申請專利範圍第1 4項之用於液晶顯示器之背光模組，其中該抗反射層之厚度係由下列公式所計算： d = 1/4 X λ/ nm ，其中ι\係為該抗反射層之折射率，A係為該光線之波長。 2 9. —種液晶顯示器，包含：一液晶顯示器面板，用以產生影像；以及至少一偏極化光源，用以照亮該液晶顯示器面板，該偏極化光源包含；一光源，用以產生光線，其中該光線具有一波長λ ; 一反射器，環繞該光源，用以反射光線，其中該反射器具有一開口，使該光線穿過一透明基板，配置於該開口處，且具有一折射率ns ; 一抗反射層，配置於該透明基板上，且具有一折射率 nm ;以及複數個金屬格線，配置於該抗反射層上，用以使具有特定偏極方向之光線通過該金屬格線，且具有一等效折射率1\ 〇 3 0.依申請專利範圍第2 9項之液晶顯示器，另包含：複數個光學膜片，配置於該光源與該液晶顯示器面板之00597-2.ptc Page 20 1220936 _Case No. 91136762_Year_Day __ Sixth, the scope of patent application na is the equivalent refractive index composed of the plurality of metal grid lines. 28. The backlight module for a liquid crystal display according to item 14 of the scope of the patent application, wherein the thickness of the anti-reflection layer is calculated by the following formula: d = 1/4 X λ / nm, where ι \ is the The refractive index of the anti-reflection layer, A is the wavelength of the light. 2 9. A liquid crystal display comprising: a liquid crystal display panel for generating an image; and at least one polarized light source for illuminating the liquid crystal display panel, the polarized light source includes; a light source for generating Light, wherein the light has a wavelength λ; a reflector surrounds the light source to reflect the light, wherein the reflector has an opening through which the light passes through a transparent substrate, is disposed at the opening, and has a refractive index ns; an anti-reflection layer disposed on the transparent substrate and having a refractive index nm; and a plurality of metal grid lines disposed on the anti-reflection layer for passing light having a specific polarization direction through the metal grid Line and has an equivalent refractive index 1 \ 〇 3 0. The liquid crystal display according to item 29 of the patent application scope, further comprising: a plurality of optical films disposed on the light source and the liquid crystal display panel.

00597-2.ptc 第21頁 1220936 _案號91136762_年月曰修正_ 六、申請專利範圍間。 3 1.依申請專利範圍第3 0項之液晶顯示器，其中該複數個光學膜片包括：至少一擴散片，用以分散該導光板射出之光線；以及至少一稜鏡片，用以使光線集中於垂直方向上。 3 2.依申請專利範圍第29項之液晶顯示器，其中該金屬格線係由鋁所製造。 3 3.依申請專利範圍第2 9項之液晶顯示器，其中製造該金屬格線之材料，係由铭、銀、銅、及其合金所構成之群組中選出。 3 4.依申請專利範圍第29項之液晶顯示器，其中該金屬格線之間距係介於0 與3 00nm之間。 3 5.依申請專利範圍第2 9項之液晶顯示器，其中該金屬格線之厚度係介於3 0 n m 與2 0 0 n m之間。 3 6.依申請專利範圍第2 9項之液晶顯示器，其中該金屬格線之寬度與間距之比例係介於0. 1 與0 . 8之間。 3 7.依申請專利範圍第2 9項之液晶顯示器，其中該金屬格00597-2.ptc Page 21 1220936 _Case No. 91136762_ Year Month Amendment _ 6. Between patent applications. 31. The liquid crystal display according to item 30 of the scope of patent application, wherein the plurality of optical film sheets include: at least one diffusion sheet for dispersing light emitted from the light guide plate; and at least one shim for focusing light In the vertical direction. 3 2. The liquid crystal display according to item 29 of the application, wherein the metal grid is made of aluminum. 3 3. The liquid crystal display according to item 29 of the scope of patent application, in which the material for manufacturing the metal grid is selected from the group consisting of Ming, silver, copper, and alloys thereof. 3 4. The liquid crystal display according to item 29 of the patent application, wherein the distance between the metal grid lines is between 0 and 300 nm. 3 5. The liquid crystal display according to item 29 of the scope of patent application, wherein the thickness of the metal grid is between 30 nm and 200 nm. 36. The liquid crystal display according to item 29 of the scope of patent application, wherein the ratio of the width to the pitch of the metal grid lines is between 0.1 and 0.8. 37. The liquid crystal display according to item 29 of the scope of patent application, wherein the metal grid

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