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TWI247176B - Direct point light source backlight module and liquid crystal display using the same - Google Patents

Direct point light source backlight module and liquid crystal display using the same Download PDF

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Publication number
TWI247176B
TWI247176B TW093108762A TW93108762A TWI247176B TW I247176 B TWI247176 B TW I247176B TW 093108762 A TW093108762 A TW 093108762A TW 93108762 A TW93108762 A TW 93108762A TW I247176 B TWI247176 B TW I247176B
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TW
Taiwan
Prior art keywords
backlight module
light source
point
liquid crystal
crystal display
Prior art date
Application number
TW093108762A
Other languages
Chinese (zh)
Other versions
TW200532316A (en
Inventor
Chen-Pin Hung
Original Assignee
Chi Mei Optoelectronics Corp
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Publication date
Application filed by Chi Mei Optoelectronics Corp filed Critical Chi Mei Optoelectronics Corp
Priority to TW093108762A priority Critical patent/TWI247176B/en
Priority to KR1020040113008A priority patent/KR101156748B1/en
Priority to US11/090,646 priority patent/US7152988B2/en
Priority to JP2005089190A priority patent/JP4807609B2/en
Publication of TW200532316A publication Critical patent/TW200532316A/en
Application granted granted Critical
Publication of TWI247176B publication Critical patent/TWI247176B/en

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504Diffusing, scattering, diffracting elements
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133604Direct backlight with lamps
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133605Direct backlight including specially adapted reflectors

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A liquid crystal display device includes: a liquid crystal display panel having two substrates and liquid crystal material sandwiched therebetween; a backlight module configured below the liquid crystal display panel; and a display housing provided therein the liquid crystal display panel and the backlight module. The backlight module is a direct point light source backlight module, which includes a plurality of point light sources, a reflective plate, a diffusing plate and a multi-later optical film. The reflective plate has a plurality of openings, and each opening corresponds to a corresponding point light source, so that the light beam of the light source can fully pass through the opening and illuminate the diffusing plate. The diffusing plate has a plurality of net points distributed radially and randomly. The radially and randomly distributed net points have a center point, and at least one point light source corresponds to the center of the radially and randomly distributed net points.

Description

1247176 五、發明說明(1) 【發明所屬之技術領域】 本發明係關於一種點光源背光模組,更特別係應用於液 晶顯示器之直下式點光源背光模組。 【先前技術】 如第1圖所示,其顯示習用液晶顯示器(LCD)裝置之結 構。一般而言,前述液晶顯示器裝置包括一液晶顯示器面 板1 0 ’其包括兩基板中間設有液晶材料、一背光模組2 〇配 置於前述液晶顯示器面板1 0之下方、以及外殼1 1及1 2。 前述背光模組2 0係配置以將一%你所發出之光線7巧1 的分配至前述液晶面板1 0之表面上。用於液晶顯示器之背 光模組20 —般可分為:直下光源型式以及邊緣光源^式。 …請參考第2圖,其顯示一種直下式背光模組21,係沿著 第1圖中剖面線2-2之剖面視圖。前述直下式背光模组2丨 外殼70,其具有一反射片6〇配置於其底部表面’,以及 啫如冷陰極管之類的燈管50,位於其底部、一擴 於前述外殼70上、以及稜鏡請配置於前述擴散片4〇上。 ,4第3圖’㈣示—種側邊式背光模組22 ’係沿著 圖令剖面線2-2之剖面視圖。前述側邊式背光模組2 J-導光板8。、-燈管50加裝於前述導光板8 J二以及-U形反射器61環繞前述燈管5〇。前述反射器6厂 係固定於前述導光板邊’-反射片 光板80上,且稜鏡片30係固U;片4°固定於前述導 述燈管50係配置於前述導光板擴散片40上。因為前 V先板80之邊緣,故前述LCD之厚1247176 V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field The present invention relates to a point source backlight module, and more particularly to a direct-type point source backlight module for a liquid crystal display. [Prior Art] As shown in Fig. 1, it shows the structure of a conventional liquid crystal display (LCD) device. In general, the liquid crystal display device includes a liquid crystal display panel 10' including a liquid crystal material disposed between the two substrates, a backlight module 2 disposed under the liquid crystal display panel 10, and the outer casings 1 1 and 1 2 . The backlight module 20 is configured to distribute a light ray of 1% to the surface of the liquid crystal panel 110. The backlight module 20 for a liquid crystal display can be generally classified into a direct light source type and an edge light source type. ...refer to Fig. 2, which shows a direct type backlight module 21, which is a cross-sectional view taken along line 2-2 of Fig. 1. The direct-type backlight module 2 丨 housing 70 has a reflective sheet 6 〇 disposed on a bottom surface thereof, and a lamp tube 50 such as a cold cathode tube, at the bottom thereof, and expanded on the outer casing 70, And the 扩散 is disposed on the diffusion sheet 4〇. 4, Fig. 3 (4) shows a side-type backlight module 22' which is a cross-sectional view taken along line 2-2 of the figure. The side edge type backlight module 2 J-light guide plate 8. - The lamp tube 50 is attached to the aforementioned light guide plate 8 J 2 and the -U-shaped reflector 61 surrounds the aforementioned lamp tube 5 〇. The reflector 6 is fixed on the side of the light guide plate, the reflection sheet 80, and the cymbal 30 is fixed to the U. The sheet 4 is fixed to the guide tube 50 and disposed on the light guide diffusion sheet 40. Because the front V is the edge of the board 80, the thickness of the aforementioned LCD

12471761247176

度便得以降低。 ,側邊式背光模組相比較,直下式背光模組之優點為亮 度南L光線行進方向直接進顯示區,不須導光板產生光強 度之損失,因不須導光板,故可降低成本。然而,習用之 直下式冷陰極管(CCFL)背光模組仍具有下列之問題: 1 ·色飽和度不佳:紅(R),綠(G),藍(B)等三色之光頻譜 過大’目前之彩色濾光片(color niter)無法濾出很純之 色光(第4圖),約72%^^8(:規範之色域(0〇1〇^§關随); 2·反應時間慢:反應時間大於數個毫秒(mini second )’其乃受限於燈管發光機制之關係; 1周圍溫度影響大:冷陰極管(CCFL)於特定溫度下方 有取,之,光效率,其光發效率受周圍溫度之影響很大; 4·高電壓驅動:冷陰極管(CCFL)驅動電壓大於1〇〇〇v ; 及 5胃不符合環保需求:冷陰極管(CCFL)使用汞。 是以二業者因而發展出直下式發光二極體(LED)背光模 組,以解決珂述問題。與直下式冷陰極管(CCFL)背光模組 相比較,、直下式發光二極體(LED)背光模組之優點為: 1二色域((:〇10]:§3_3)大:紅(]〇,綠((;),藍(6)等三色 之光頻譜較集中,目前之彩色濾光片(c〇1〇r fUter)極易 濾出很純之色光(第5圖),約1〇〇% 2NTSC規範之色域 (color gamma); 2·反應時間快:反應時間大於數個奈秒(nan〇 second ); 1247176 五、發明說明(3) 3·不受周 4 ·低驅動 2〜3V ,藍、 5 ·符合環 有鐘於此 液晶顯示p 由此可知 源。本發明 之光源外。 板’成為使 分布網點之 模組。此外 上一輻射狀 光模組或直 【發明内容 圍溫度影響; 電壓:紅光發光二極體(LED)之驅動電壓為 綠光發光二極體(LED)之驅動電壓為3〜5V ;及 保需求:發光二極體(LED)無須使用汞。 ,直下式發光二極體(led)背光模組業已成為 (LCD )裝置之主要趨勢。 ’直下式冷陰極管(CCFL)背光模組為一種線光 除改良使用於直下式冷陰極管(CCFL)背光模組 亦改良直下式冷陰極管(CCFL)背光模組之擴散 用务光一極體(L E D )為點光源及一輻射狀敗數 擴散板所構成之直下式發光二極體(LED )背光 ,本發明亦可使用汞燈或齒素燈為點光源再加 亂數分布網點之擴散板等,構成直下式汞燈背 下式i素燈背光模組。 ] -哭二/之目的係提供一種液晶顯示器,包括:一液晶顯 =抑一板,其中前述之面板包括兩基板間夾設一液晶材 料,Γ ί光模組配置於前述液晶顯示器面板之下方;以及 /顯不為外殼,内含前述液晶顯示器面板及前述背光模 組^其=别述背光模組為一種直下式點光源背光模組,以 取代目前所使用之直下式冷陰極管(CCFL)背光模組。 、〃為達上述目的,發明一直下式點光源背光模組,包括: 複,個點光源’—反射& ’前述反射板具有複數個開孔, 母開孔對應於相對應之點光源;一擴散板,前述擴散The degree is reduced. Compared with the side-lit backlight module, the advantage of the direct-lit backlight module is that the light south L light travel direction directly enters the display area, and the light intensity loss of the light guide plate is not required, and the light guide plate is not required, so the cost can be reduced. However, the conventional direct-flow cold cathode tube (CCFL) backlight module still has the following problems: 1 · Poor color saturation: red (R), green (G), blue (B) and other three colors of light spectrum is too large 'The current color filter can't filter out very pure color light (Fig. 4), about 72%^^8 (: gauge color gamut (0〇1〇^§ off); 2·reaction Slow time: the reaction time is greater than a few milliseconds (mini second)' is limited by the relationship between the light-emitting mechanism of the lamp; 1 the influence of the surrounding temperature is large: the cold cathode tube (CCFL) is taken below a certain temperature, and the light efficiency is The light-emitting efficiency is greatly affected by the ambient temperature; 4. High-voltage drive: The cold cathode tube (CCFL) drive voltage is greater than 1〇〇〇v; and 5 stomachs do not meet environmental requirements: Cold cathode tubes (CCFL) use mercury. Therefore, the second industry has developed a direct-lit LED backlight module to solve the problem. Compared with the direct-type cold cathode tube (CCFL) backlight module, the direct-lit LED (LED) The advantages of the backlight module are: 1 two color gamut ((: 〇 10]: § 3_3) large: red (] 〇, green ((;), blue ( 6) The spectrum of the three-color light is more concentrated. The current color filter (c〇1〇r fUter) is very easy to filter out very pure color light (Fig. 5), about 1%% of the color gamut of the 2NTSC specification ( Color gamma); 2·Reaction time is fast: reaction time is greater than several nanoseconds (nan〇second); 1247176 V. Invention description (3) 3· Not subject to week 4 · Low drive 2~3V, blue, 5 · Compliant ring There is a clock on the liquid crystal display p to know the source. The light source of the present invention. The board 'becomes a module for distributing the dots. In addition, the upper radial light module or the direct [invention content temperature influence; voltage: red light The driving voltage of the diode (LED) is 3~5V for the green light-emitting diode (LED); and the demand for the light-emitting diode (LED) does not need to use mercury. The direct-lit LED ( Led) backlight module has become the main trend of (LCD) devices. 'Direct-type cold cathode tube (CCFL) backlight module is a kind of line light improvement and is used in direct-type cold cathode tube (CCFL) backlight module. The diffusion of a cold cathode tube (CCFL) backlight module uses a light-emitting diode (LED) as a point source and The direct-type light-emitting diode (LED) backlight formed by the radiation-deficient diffusing plate can also be used as a direct-type mercury lamp by using a mercury lamp or a tooth-shaped lamp as a point light source and a diffusion plate of a random distribution dot. The back-illuminated i-lamp backlight module.] - Cry the second / the purpose is to provide a liquid crystal display, comprising: a liquid crystal display = a board, wherein the aforementioned panel comprises a liquid crystal material interposed between the two substrates, Γ ί light The module is disposed under the liquid crystal display panel; and/or is not a casing, and includes the liquid crystal display panel and the backlight module. The backlight module is a direct-type point light source backlight module to replace the current A direct-type cold cathode tube (CCFL) backlight module is used. In order to achieve the above object, the invention has been the following point light source backlight module, comprising: a complex point light source '-reflecting & 'the aforementioned reflecting plate has a plurality of openings, the female opening corresponding to the corresponding point light source; a diffuser plate, the aforementioned diffusion

00844.ptd 第7頁 1247176 五、發明說明(4) 板具有複數個輻射狀亂 應於輪射狀亂數分布網 模組,其中前述複數個 燈、i素燈。前述輕射 控制網點之密度改變網 再配合網點徑向距離的 及點位置並做亂數分佈 近前述點光源處密或直 小;而且前述之輕射狀 複數點的複合組合;再 述擴散板之上表面或下 述輻射狀亂數網點包括 合方式配置於擴散板上 質製成,選自如玻璃, PMMA,PC,Arton 及PET 射物質,選自鈦系化合 根據本發明的目的, 方法,前述方法包括步 有複數個開孔的反射板 源;形成一擴散板,於 數分布網點;其中至少 布網點的中心;其中前 (led)、汞燈、_素燈 述點光源處密或直徑大 數分布網 點的中心 點光源包 狀亂數網 點離心方 大小,來 處理。所 徑大,遠 亂數網點 者前述轎 表面或部 凸點、凹 。前述擴 壓克力樹 專材料。 物,矽系 一種直下 驟:形成 ,且每一 前述擴散 一點光源 述複數個 。前述輻 ,遠前述 點;其中至 。前述直下 括發光二極 點中心控制 向間距和切 控制其相對 以輻射狀亂 前述點光源 包括:單點 射狀亂數網 分上表面部 槽或部分凸 散板係由透 脂(Acrylic 前述輻射狀 化合物及硫 式點光源背 複數個點光 開孔對應於 板上配置複 對應於前述 點光源包括 射狀亂數網 點光源處疏 少一點光源對 式點光源背光 體(LED)、汞 面積遮敗率即 線方向間距, 面積的遮蔽率 數網點分布係 處疏或直徑 、複數點或單 點係配置於前 分下表面;前 點部分凹槽複 光或半透光材 Resin), 亂數網點為反 酸鋇等。 光模組的製作 源;形成一具 相對應之點光 數個輻射狀亂 輕射狀亂數分 發光二極體 點分布係近前 或直徑小;前00844.ptd Page 7 1247176 V. INSTRUCTIONS (4) The board has a plurality of radiating disturbances in the wheel-like random number distribution network module, wherein the plurality of lamps and the i-lamps are arranged. The density change network of the aforementioned light-radiation control dot is further matched with the radial distance of the dot and the position of the dot and the random number distribution is close to or close to the point source; and the composite combination of the aforementioned light-shot complex points; The upper surface or the radial random number of dots included in the following manner are disposed on the diffusion plate, and are selected from the group consisting of glass, PMMA, PC, Arton and PET, selected from the group consisting of titanium compounds according to the purpose of the present invention, the method, the foregoing The method comprises: a reflector source having a plurality of openings; forming a diffusion plate to distribute the dots in the number; wherein at least the center of the distribution point; wherein the front (led), the mercury lamp, the _ prime lamp, the light source is dense or large The center point light source of the number distribution dot is packaged in a random number of mesh points to be processed. The diameter is large, and the number of dots is far from the number of dots on the surface or the convex or concave surface of the car. The aforementioned expansion of the special material for the tree. Matter, 矽 is a straight down: formation, and each of the aforementioned diffusion of a little light source is described in plural. The aforementioned spokes, far from the aforementioned points; among them. The aforementioned direct illumination illuminating two-pole center control direction spacing and cutting control relative to the radiation point of the foregoing point light source comprises: single-point singular random number network upper surface groove or partial slab plate by lipolysis (Acrylic said radial compound And the sulfur point source is backed by a plurality of spot light openings corresponding to the on-board configuration corresponding to the foregoing point light source including a sporadic number of dot source light sources, a little light source, a point source light source backlight (LED), and a mercury area failure rate That is, the line direction spacing, the area of the shielding rate, the dot distribution is at the sparse or diameter, the complex point or the single point system is arranged on the front sub-surface; the front point is partially recessed or semi-transparent material Resin), the random number of dots is Acid reflux and so on. The source of the optical module is formed; a corresponding point of light is formed, a plurality of radiations are scattered, and the light-emitting diodes are distributed. The point distribution system is near or the diameter is small;

1247176 五、發明說明(5) ,土射狀亂數網點包括:單點、複數點或單複數點人 2 口 ,而且珂述輻射狀亂數網點係配置於前板I ^或下表面或部分上表面部分下表面雇J = 透光或半透光材質製成,選自如玻璃,壓克力=板係由 (,rylic Resin),pMMA,pc,Art〇n 及m 等材曰.豆 別述輻射狀亂數網點為反射物質,選自鈦系化合; 化合物及硫酸鋇等;而且輻射狀亂數網點係刷 凸點於擴散板上…將前述擴散板模製 槽、,再於凸點或凹槽網目印刷或塗層前述網點。·,沾或凹 為了讓本發明之上述和其他目&、特徵、和優點能更明 頌,下文特舉本發明較佳實施例,並配合所附圖示, 細說明如下: 【實施方式】 請參考第6圖為應用本發明之背光模組12〇之液晶顯示器 1〇〇部份示意圖。前述液晶顯示器100包括一液晶顯示器面 板11 0以及一背光模組1 2 〇。前述液晶顯示器面板丨丨〇具有 兩透明基板1 1 2、1 1 4,以及液晶材料丨丨6配置於其中。前 述背光模組1 20係直下式點光源背光模組,作用為提供一 光源裝置’用於整個顯示區域中,均勻的發射光線並照亮 前述液晶顯示器面板11 0。前述背光模組包括複數個點光 源1 5 0、一反射板1 6 0、一擴散板1 8 〇、以及多層之光學 膜0 反射板1 6 0具有複數個反射板開孔1 6 2,每一反射板開孔 1 6 2對應於相對應之點光源1 5 0,俾使點光源丨5 〇之光線得1247176 V. Inventive Note (5), the ground-like random number of dots includes: single point, plural point or single-numbered point 2, and the radial random number points are arranged on the front plate I ^ or the lower surface or part The lower surface of the upper surface part is made of J = light transmissive or semi-transparent material, selected from the group consisting of glass, acrylic, rylic Resin, pMMA, pc, Art〇n and m. The radial random number of dots is a reflective material selected from the group consisting of titanium compounds; compounds and barium sulfate; and the radial random dots are brushed on the diffusion plate... the groove is molded into the groove, and then the bump is formed. Or the groove mesh prints or coats the aforementioned dots. The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention. Please refer to FIG. 6 for a schematic diagram of a portion of a liquid crystal display of a backlight module 12 of the present invention. The liquid crystal display 100 includes a liquid crystal display panel 110 and a backlight module 1 2 〇. The liquid crystal display panel 丨丨〇 has two transparent substrates 1 1 2, 1 1 4, and a liquid crystal material 丨丨 6 is disposed therein. The backlight module 120 is a direct-type point light source backlight module, and functions to provide a light source device for the entire display area to uniformly emit light and illuminate the liquid crystal display panel 110. The backlight module includes a plurality of point light sources 150, a reflecting plate 160, a diffusing plate 1 8 〇, and a plurality of layers of optical film 0. The reflecting plate 160 has a plurality of reflecting plate openings 162, each A reflector opening 16 2 corresponds to the corresponding point source 1 50, so that the point source 丨 5 〇 light

00844.ptd 第9頁 1247176 五、發明說明(6) 以完全穿越前述反射板開孔i 62而照射擴散板〗8 〇,被擴散 板18G反射之光線返回反射板丨6〇後,再反射至擴散板 1 8 0。根據不同型態之點光源丨5 〇,反射板〗6 〇可設置於點 光源1 5 0之上方,下方或同一水平面,唯需使點光源丨5 〇之 光線得以完全穿越前述開孔162而照射擴散板18〇。並透過 此擴散板1 8 0使部分光穿透部分光反射,前述反射光經反 射板再反射至輻射狀亂數網點分布的擴散板丨8 〇,再重新 利用以挺幵整體區域之均齊度(Unif〇rmity)。 參考第7圖為根據本發明之實施例之直下式點光源背光 模組22 0之示意圖。前述直下式點光源背光模組22〇包括複 數個點光源2 5 G ’ 一反射板2 6 〇具有複數個反射板開孔 2 6 2 ’ 一擴散板2 8 0具有複數個輻射狀亂數網點2 8 2分布其 上,同時前述之輻射狀亂數網點282於擴散板28〇上之分布 須有複數個輻射狀亂數網點中心2 9 0,假設一點光源2 5 〇對 應於一輻射狀亂數網點中心2 90因為點光源25〇之光強度分 佈不均,中間強旁邊弱,所以為解決發光源強弱分佈不 均,本發明設計輻射狀亂數網點282分布有一輻射狀亂數 網點中心2 9 0以抑制中間強光處,所以輻射狀亂數網點分 布係近前述點光源處密或直徑大,遠前述點光源處疏或直 徑小,即以輻射狀亂數網點中心290控制面積遮蔽率即控 制網點之密度改變網點離心方向間距和切線方向間距,再 配合網點徑向距離的大小,來控制其相對面積的遮蔽率及 點位置並做亂數分佈處理。 上述貫施例為一點光源2 5 0對應於一輻射狀亂數網點中00844.ptd Page 9 1247176 V. DESCRIPTION OF THE INVENTION (6) The diffuser plate is irradiated to the diffuser plate by completely traversing the opening i 62 of the reflector, and the light reflected by the diffuser 18G is returned to the reflector 丨6〇, and then reflected to Diffuser plate 1 800. According to different types of point light source 丨5 〇, the reflector 〖6 〇 can be set above the point source 150, below or the same horizontal plane, only need to make the point source 丨5 〇 light completely through the aforementioned opening 162 The diffusion plate 18 is irradiated. And transmitting, by the diffusing plate 180, a part of the light penetrating part of the light is reflected, and the reflected light is reflected by the reflecting plate to the diffusing plate 丨8 分布 distributed by the radial random number of dots, and is reused to make the whole area uniform. Degree (Unif〇rmity). Reference is made to Figure 7 which is a schematic illustration of a direct-lit point light source backlight module 22 in accordance with an embodiment of the present invention. The direct-type point source backlight module 22 includes a plurality of point sources 2 5 G 'a reflector 2 6 〇 has a plurality of reflector openings 2 6 2 ' a diffusion plate 2 8 0 has a plurality of radial random dots 2 8 2 is distributed thereon, and the distribution of the aforementioned radial random number dot 282 on the diffusion plate 28〇 must have a plurality of radial random number dot centers 290, assuming that a little light source 2 5 〇 corresponds to a radial disorder The center of the number of dots 2 90 is uneven because of the uneven distribution of the intensity of the light source 25 ,, and the middle strong side is weak. Therefore, in order to solve the uneven distribution of the intensity of the illuminating source, the present invention designs a radial random number of dots 282 distributed with a radial random number of dot centers 2 90 to suppress the middle glare, so the radial random number distribution is close to the point source or the diameter is large, and the point source is far away or the diameter is small, that is, the area is controlled by the radiation center number 290. That is, the density of the control dot changes the spacing between the centripetal centrifugation direction and the tangential direction, and then the radial distance of the mesh point is used to control the shielding rate and the position of the relative area and perform random number distribution processing. The above embodiment is a point light source 2 5 0 corresponding to a radial random number of dots

00844.ptd 第10頁 1247176 五、發明說明(7) 心2 90為例,本發明亦適用於複數個點光源25〇對應於一個 輻射狀亂數網點中心290,如第8圖。其中前述複數個點光 源2 50包括發光二極體(LED)、汞燈、鹵素燈;而且前述輻 射狀亂數網點28 2係配置於前述擴散板280之上表面或下表 面或部分上表面部分下表面;前述輻射狀亂數網點2 8 2包 括凸點、凹槽或部分凸點部分凹槽複合方式配置於擴散板 280上。前述擴散板28〇係由透光或半透光材質製成,選自 如玻璃’壓克力樹脂(Acrylic Resin),pmma,PC,Arton 及P E T等材料。前述輻射狀亂數網點2 8 2為反射物質,選自 鈦系化合物,矽系化合物及硫酸鋇等。 第9 ( a )〜(f )圖為根據本發明實施例之賴射狀亂數網點單 元之輪射狀亂數網點分布。如第9 (a )圖所示前述之輻射狀 亂數網點282於一預定單元面積292(如0· 1〜1.2mm見方單 元)内,僅具有一輻射狀亂數網點2 8 2。如第9 ( b )與第9 ( f ) 圖所示’其係於一預定單元面積2 9 2内,具有兩輻射狀亂 數網點2 8 2,其中兩輻射狀亂數網點2 8 2可相連接如圖9 (b) 或分開如圖9(f)。如第9(c)- 9(e)圖所示,其係於一預 定單元面積2 9 2内,具有複數個輻射狀亂數網點2 8 2其中有 一單元中心網點2 8 2 a,其餘之複數個輻射狀亂數網點繞此 單元中心網點28 2a配置。如此可得,單點之輻射狀亂數網 點、複數點或單複數點的複合組合,如第10(a)— l〇(b)圖 所示。 雖然本發明已以前述較佳實施例揭示,然其並非用以限 定本發明,任何熟習此技藝者,在不脫離本發明之精神和00844.ptd Page 10 1247176 V. Description of the Invention (7) For example, the heart 2 90, the present invention is also applicable to a plurality of point sources 25 〇 corresponding to a radial random dot center 290, as shown in FIG. The plurality of point light sources 2 50 include a light emitting diode (LED), a mercury lamp, and a halogen lamp; and the radial random number dot 28 2 is disposed on the upper surface or the lower surface or a portion of the upper surface portion of the diffusing plate 280. The lower surface; the radial random number dot 28 2 includes a bump, a groove or a partial bump portion groove in a composite manner disposed on the diffusion plate 280. The diffuser plate 28 is made of a light transmissive or semi-transparent material selected from materials such as glass 'Acrylic Resin', pmma, PC, Arton and P E T . The radial random number dot 28 2 is a reflective material selected from the group consisting of a titanium compound, an anthraquinone compound, and barium sulfate. The 9th (a) to (f) diagrams show the distribution of the random number of dots of the ray-like random dot unit according to the embodiment of the present invention. The radial random number dot 282 as shown in Fig. 9(a) has a radial random number dot 2 8 2 in a predetermined cell area 292 (e.g., 0·1 to 1.2 mm square). As shown in Figures 9(b) and 9(f), it is within a predetermined unit area of 2 9 2 and has two radial random number points 2 8 2, of which two radial random number points 2 8 2 Connect as shown in Figure 9 (b) or as shown in Figure 9(f). As shown in Figure 9(c)-9(e), it is within a predetermined unit area of 2 9 2 and has a plurality of radial random number dots 2 8 2 with one unit center dot 2 8 2 a, and the rest A plurality of radial random number dots are arranged around the cell center point 28 2a. Thus, the composite combination of a single point of radial random number, complex point or singular and complex point is shown in Fig. 10(a) - l〇(b). Although the present invention has been disclosed in the foregoing preferred embodiments, it is not intended to limit the invention, and those skilled in the art, without departing from the spirit of the invention.

00844.ptd 第11頁 124717600844.ptd Page 11 1247176

00844.ptd 第12頁 1247176 圖式簡單說明 【圖式簡單說明】 意圖 圖 ^ \圖為根據先前技術之液晶顯示器之立體透視展開示 第2圖為根據先前技術之直下式背光模組之剖面示意 3 pi %, 圖 。固马根據先前技術之側邊式背光模組之剖面示意 第2圖為根據直下式冷陰極管背光模組之光頻譜。 。圖為根據直下式發光二極體(LED)背光模組之光頻 曰圖為應用本發明實施例之直下式點光源背光模組之 /曰曰顯示器部份示意圖。 第7 8 、 、8圖為根據本發明實施例之直下式點光源背光模組 之不意圖。 -第9 ( a)〜(f )圖為根據本發明實施例之輻射狀亂數網點單 凡,輪射狀亂數網點分布。 第1 〇 (a)圖為根據本發明單點輻射狀亂數網點之分布示 思圖 。 -第1〇(b)圖為根據 示意圖。 本發明複數點輻射狀亂數網點之分 布 圖號說明 10 液晶顯示器面板 11 外殼00844.ptd Page 12 1247176 Brief description of the drawing [Simplified description of the drawing] The intent is shown in Fig. 2 is a perspective view of the liquid crystal display according to the prior art. Fig. 2 is a schematic sectional view of the direct type backlight module according to the prior art. 3 pi %, figure. The schematic diagram of the profile of the side-mounted backlight module according to the prior art is shown in Fig. 2. The light spectrum of the backlight module according to the direct-type cold cathode tube is shown. . The figure is a schematic diagram of a portion of a direct-lit point light source backlight module according to an embodiment of the present invention, according to an optical frequency diagram of a direct-lit light-emitting diode (LED) backlight module. The seventh, eighth, and eighth figures are not intended to be a direct-type point light source backlight module according to an embodiment of the present invention. - Figures 9(a) to (f) are radial random number dots in accordance with an embodiment of the present invention. Fig. 1 (a) is a diagram showing the distribution of random points of random spots in accordance with the present invention. - Figure 1(b) is based on the schematic diagram. The distribution of the plurality of dots of the random number of dots of the present invention is shown in the figure. 10 LCD panel 11

12471761247176

圖式簡單說明 12 外殼 20 背光模組 21 直下式背光模組 22 側邊式背光模組 30 稜鏡片 40 擴散片 50 燈管 80 導光板 100 液晶顯示器 110 液晶顯示器面板 112 透明基板 114 透明基板 116 液晶材料 150 、2 5 0 點光源 120 、2 2 0 直下式點光源 背光 模組 160 反射板 162 、2 6 2 反射板開孔 180 '28 0 擴散板 182 、2 8 2 網點 282a 單元中心網點 290 輻射狀亂數網點中〃 292 輻射狀亂數網點單元 00844.ptd 第14頁Brief description of the drawing 12 housing 20 backlight module 21 direct backlight module 22 side backlight module 30 diaphragm 40 diffusion sheet 50 tube 80 light guide plate 100 liquid crystal display 110 liquid crystal display panel 112 transparent substrate 114 transparent substrate 116 liquid crystal Material 150, 250 point light source 120, 2 2 0 direct type point source backlight module 160 reflector 162, 2 6 2 reflector opening 180 '28 0 diffuser 182, 2 8 2 dot 282a cell center dot 290 radiation乱乱数点点中 292 Radial random number dot unit 00844.ptd Page 14

Claims (1)

1247176 案號 93108762 六、申請專利範圍 年月日_ί魅 6 ·依申請專利範圍第1項之直下式點光源背光模組,其中該 輪射狀亂數網點係配置於該擴散板之上表面或下表面或部 分上表面部分下表面。 7二依申請專利範圍第丨項之直下式點光源背光模組,其中該 幸田射狀IL數網點係由凸點、凹槽或部分凸點部分凹槽複合 方式所組成之族群配置於擴散板上。 8 ·依申請專利範圍第1項之直下式點光源背光模組,其中該 板係由透光或半透光材質製成,選自由玻璃,壓克力 才 ί 月曰(Acrylic Resin),PMMA,PC,Arton 及 ΡΕ了所組成之族 群。 9:依u申請專利範圍第1項之直下式點光源背光模組,其中該 輕射狀亂數網點為反射物質,選自由鈦系化合物,矽系化 合物及硫酸鋇所組成之族群。 種直下式點光源背光模組的製作方法,該方法包括步 驟. 形成複數個點光源; 形成〜 對應之點 形成〜 具有複數個開孔的反射板,且每一開孔對應於相 光源; 擴散板,於該擴散板上配置複數個輻射狀亂數分1247176 Case No. 93108762 VI. Scope of Patent Application _ 魅 6 6 · According to the patent application scope item 1, the direct-type point light source backlight module, wherein the round-shaped random number dot is disposed on the upper surface of the diffuser Or the lower surface of the lower surface or part of the upper surface portion. 7: According to the patent application scope of the invention, the direct-type point light source backlight module, wherein the Koda field-like IL number dot is composed of a group of bumps, grooves or partial bumps and groove combinations, and is arranged on the diffusion plate. on. 8 · Direct-type point light source backlight module according to item 1 of the patent application scope, wherein the board is made of light transmissive or semi-transparent material, selected from glass, acrylic, Acrylic Resin, PMMA , PC, Arton and the group formed by the group. 9: The direct-type point light source backlight module according to the first application of the patent scope, wherein the light-scattering random dot is a reflective material selected from the group consisting of a titanium compound, a lanthanide compound and barium sulfate. A method for fabricating a direct-type point light source backlight module, the method comprising the steps of: forming a plurality of point light sources; forming a corresponding point forming a reflector having a plurality of openings, and each opening corresponds to a phase light source; a board on which a plurality of radial random numbers are arranged 第16頁 1247176 _案號93108762_年月日__ 1六、申請專利範圍 I ; 布網點,使至少一點光源對應於該輻射狀亂數分布網點的’ I 丨 中心。 11.依申請專利範圍第1 0項之直下式點光源背光模組的製作 方法,其中該複數個點光源係選自由發光二極體(LED)、 汞燈、齒素燈所組成之族群。 1 2.依申請專利範圍第1 0項之直下式點光源背光模組的製作 方法,其中該輻射狀亂數網點分布係近該點光源處密或直 徑大,遠該點光源處疏或直徑小。 1 3.依申請專利範圍第1 0項之直下式點光源背光模組的製作 方法,其中該輻射狀亂數網點於0 . 1〜1. 2 mm見方單元内包 括:單點、複數點或單複數點的複合組合。 1 4.依申請專利範圍第1 3項之直下式點光源背光模組的製作 方法,其中該輻射狀亂數網點於0. 1〜1. 2mm見方單元内之該 複數網點具有一單元中心網點,其餘之複數個輻射狀亂數 網點繞此單元中心網點配置。 1 5.依申請專利範圍第1 0項之直下式點光源背光模組的製作 方法,其中該輻射狀亂數網點係配置於該擴散板之上表面 或下表面或部分上表面部分下表面。Page 16 1247176 _ Case No. 93108762_年月日日__ 1 6, the scope of patent application I; Layout points, so that at least one point of light source corresponds to the 'I 丨 center of the radial random distribution network. 11. The method of fabricating a direct-lit point light source backlight module according to claim 10, wherein the plurality of point light sources are selected from the group consisting of a light emitting diode (LED), a mercury lamp, and a tooth lamp. 1 2. According to the method for manufacturing the direct-type point light source backlight module according to claim 10 of the patent scope, wherein the radial random number distribution is close to the point source, or the diameter is large, and the point source is at a distance or diameter. small. 1 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 A composite combination of singular and plural points. 1 至1. The multiplicity of dots in the 2mm square unit has a unit center network dot according to the method of the invention. The remaining plurality of radial random number points are arranged around the center point of the unit. 1 . The method for manufacturing a direct-lit point light source backlight module according to claim 10, wherein the radial random number dot is disposed on an upper surface or a lower surface of the diffusing plate or a lower surface of a portion of the upper surface portion. 93108762 年 月 日_ 1247176笔 -- --.___ I i六、申請專利範圍 1 6.依申請專利範圍第丨〇項之直下式點光源背光模組的製作 方法,其中該擴散板係由透光或半透光材質製成,選自由 玻璃,壓克力樹脂(Acrylic Resin),PMMA,PC,Arton 及 PET所組成之族群。 1 7·、依申請專利範圍第丨〇項之直下式點光源背光模組的製作 方法’其中該輻射狀亂數網點為反射物質,選 合物,石夕系化合物及硫酸鋇戶斤組成之族群。自由鈦糸化 ^10 ΐ ^ ^ ^ ^ f ^ ^ ^ ^ t ^ 板上。 μ °射狀虬數網點係經由網目印刷凸點於擴散 19 ·依申請專利範圍第1 〇項之* ^ 方法,其中將該擴散板模势/下式點光源背光模組的製作 或凹槽網目印刷或塗層該網2具有凸點或凹槽’再於凸點 20. 一種夜晶顯示器,包括: 液晶顯示器面板,其中 曰曰 材料 面板包括兩基板間失設一液 一=光楔組配置於該液晶顯 二j r器外殼,内含該液晶 '、5亥背光模組為一直下式 示器面板之下方;以及 顯示器面板及該背先模組 點光源背光模組,包括:93108762月月日_ 1247176笔-- --.___ I i VI. Patent application scope 1. 6. According to the patent application scope, the direct-type point light source backlight module is manufactured, wherein the diffusion plate is transparent. Made of light or semi-transparent material, selected from the group consisting of glass, acrylic resin (Acrylic Resin), PMMA, PC, Arton and PET. 1 7·, according to the patent application scope of the third item of the direct-type point light source backlight module manufacturing method, wherein the radial random number of dots is a reflective substance, a compound, a stone compound and a sulphuric acid Ethnic group. Free titanium deuterated ^10 ΐ ^ ^ ^ ^ f ^ ^ ^ ^ t ^ on the plate. μ ° 虬 网 网 网 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 印刷 19 印刷 印刷 19 19 19 19 19 19 19 19 The mesh prints or coats the web 2 with bumps or grooves' and then with the bumps 20. A night crystal display comprises: a liquid crystal display panel, wherein the germanium material panel comprises a liquid-to-light wedge group between the two substrates The utility model is disposed in the liquid crystal display two jr device casing, and comprises the liquid crystal ', the 5 sea backlight module is below the lower display panel; and the display panel and the back module first point light source backlight module, comprising: 1247176 案號 93108762 年月日 修正 六、申請專利範圍 複數個點光源; ’ 一反射板,該反射板具有複數個開孔,且每一開孔對應 於相對應之點光源; 一擴散板,該擴散板具有複數個輻射狀亂數分布網點; 其中至少一點光源對應於該輻射狀亂數分布網點的中1247176 Case No. 93108762 Revised June 6th, the patent application scope of a plurality of point light sources; 'a reflector, the reflector has a plurality of openings, and each aperture corresponds to a corresponding point source; a diffusion plate, the The diffuser plate has a plurality of radial random number distribution dots; wherein at least one light source corresponds to the radial random number distribution dot 2 1.依申請專利範圍第2 0項之液晶顯示器,其中該複數個點 光源係選自由發光二極體(LED)、汞燈、及鹵素燈所組成 之族群。 2 2.依申請專利範圍第2 0項之液晶顯示器,其中該輻射狀亂 數網點分布係接近該點光源處密或直徑大,遠離該點光源 處疏或直徑小。 2 3.依申請專利範圍第2 0項之液晶顯示器,其中該輻射狀亂 數網點於0. 1〜1. 2mm見方單元内包括:單點、複數點或單複 數點的複合組合。2 1. The liquid crystal display according to claim 20, wherein the plurality of point light sources are selected from the group consisting of a light emitting diode (LED), a mercury lamp, and a halogen lamp. 2 2. The liquid crystal display according to item 20 of the patent application scope, wherein the radial random dot distribution is close to the point source, the density or the diameter is large, and the distance from the point source is small or the diameter is small. 2 。 According to the scope of the patent application of the 20th liquid crystal display, wherein the radial random number of dots in the 0. 1~1. 2mm square unit includes: a single point, a complex point or a composite point of a single complex point. 2 4.依申請專利範圍第2 3項之液晶顯示器,其中該輻射狀亂 數網點於0. 1〜1. 2 mm見方單元内之該複數網點具有一單元中 心網點,其餘之複數個輻射狀亂數網點繞此單元中心網點 配置。2。 The liquid crystal display according to the scope of claim 23, wherein the radial random number of dots in the 0. 1~1. 2 mm square unit of the plurality of dots has a unit center dot, the remaining plurality of radial A random number of dots is arranged around the center of the unit. 第19頁 1247176 案號 93108762 修正 六、申請專利範圍 2 5.依申請專利範圍第2 0項之液晶顯示器,其中該輻射狀I 數網點係配置於該擴散板之上表面或下表面或部分上表面 部分下表面。Page 19 1247176 Case No. 93108762 Amendment VI, Patent Application No. 2 5. The liquid crystal display according to item 20 of the patent application scope, wherein the radial I number dot is disposed on the upper surface or the lower surface or part of the diffuser The lower surface of the surface portion. 第20頁Page 20
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