TW583471B - Dual-face type backlight module and liquid crystal display apparatus - Google Patents
Dual-face type backlight module and liquid crystal display apparatus Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 45
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Description
五、發明說明（1)V. Description of the invention (1)
【發明所屬之技術領域】 本發明係有關於一種罅而々此、丨， 置，且特別有關於一種使工月光模組及液晶顯示裝 液晶顯示裝置。 面直下式背光模組的雙面式 【先前技術】 隨著顯示器技術的演 線管（C R T )不斷演進而 ’、、、不裝置已從傳統的陰極射 ，液晶顯示裝i (LCD) 新式的顯示裝置。其中 ，因此已逐漸成為現今當、二/ 、省電、低輻射等優點 於筆記型電腦、數位相：見==置之…廣泛應用 資訊或消費性電子產品之中、彔衫機、行動電話等通訊、 液晶 行顯示， 度充分與 像 此一 進行。背 組以及直 模組通常 用導光板 線行進方 言，直下 模組正下 來增加光 由於液晶 分佈均勻 供應光源 光模組可 下式（或 僅採用單 設計來加 向控制不 式背光模 方，因安 源強度， 王要是以 面板本身 的光源， 的功能即 依其結構 稱平板式 支燈管或 強對光線 易，因此 組的設計 置空間變 因而較適 叫叫攸CLUD panel )進 並不會發光，因此必須供應亨 使液晶面板能夠正常顯示影 由背光（backl ight )模組來 的，同’而分為側光式背光相 )者光模版兩種。側光式背为 兩支以上之燈管做為光源， 行進方向的控制，然而由於为 顯示效果通常較差。相較而 係將做為光源的燈管置於背走 大故可使用兩支以上的燈 用於對可攜性及空間要求較不[Technical field to which the invention belongs] The present invention relates to an electronic device, and particularly to an LCD module and a liquid crystal display device. Double-sided type of face-down backlight module [Previous technology] With the continuous evolution of the display technology (CRT) of the display technology, ',,, and the device has been emitted from the traditional cathode, the liquid crystal display device (LCD) new type Display device. Among them, it has gradually become the current advantages of current, second /, power saving, low radiation, etc. in notebook computers, digital phase: see == put it in ... widely used in information or consumer electronics, shirts, mobile phones Waiting for communication and LCD display, the degree is fully carried out like this. The back group and the straight module usually use the light guide plate line to travel in the dialect. The direct module is directly down to increase the light. Since the liquid crystal is evenly supplied to the light source, the light module can be typed (or only a single design is used to control the type of the backlight module. The strength of Anyuan, Wang is based on the light source of the panel itself. Its function is called a flat-type support tube or strong light-to-light according to its structure. Therefore, the design space of the group becomes more suitable, which is called a CLUD panel. Since it is light-emitting, it is necessary to supply Heng to make the LCD panel display normally. The backlight comes from the backlight module, which is the same as the edge-light backlight module. The edge-lit back uses two or more lamps as the light source to control the direction of travel. However, the display effect is usually poor. In contrast, the lamp tube used as the light source is placed away. Therefore, more than two lamps can be used for less portability and space requirements.
583471 五、發明說明（2) 挑剔的一般液晶顯示器。 請參見第1圖，顯示一習知使用直下式背光模組的液 晶顯示裝置1 0 0之結構。此一習知的液晶顯示裝置1 〇 〇具有 —液晶面板11 0、外框1 7 0、以及其内部的直下式背光模 組，包含有保護擴散片120、稜鏡片130、擴散片140、做 為光源的燈管1 5 0、反射片1 6 0以及調光網點1 4 5。 直下式背光模組一般常使用低壓汞螢光燈設計的冷陰 極燈管（Cold Cathode Fluorescent Lamp，CCFL)做為583471 V. Description of the invention (2) Picky general LCD monitor. Please refer to FIG. 1, which shows the structure of a conventional liquid crystal display device 100 using a direct type backlight module. The conventional liquid crystal display device 100 has a liquid crystal panel 110, an outer frame 170, and a direct-type backlight module therein, which includes a protective diffusion sheet 120, a cymbal sheet 130, a diffusion sheet 140, and It is the light tube 150, the reflection sheet 160, and the dimming network point 145. Direct-lit backlight modules often use Cold Cathode Fluorescent Lamp (CCFL) designed by low-pressure mercury fluorescent lamp as the
燈管（光源）1 5 0。冷陰極燈管的發光原理與一般日光燈 十分相似，係利用電場效應激發惰性氣體原子與汞原子碰 撞以釋出低波長的紫外光，透過塗佈於燈管壁的螢光體 後，便可轉化為可見光。 反射片160之作用係將燈管150所發出之光線反射向擴 散片1 4 0，以提高燈管1 5 0的光線利用效率。内側的擴散片 1 4 0以及外側的保護擴散片1 2 0之作用在於將光線擴散，以 調整光線的均勻度。稜鏡片1 30 (也稱為集光片）的主要 作用則在於聚光，以增加背光模組所產生的亮度。調光網 點1 4 5則主要在於調整光線的亮度與均勻度。Light tube (light source) 1 50. The cold-cathode lamp's light-emitting principle is very similar to that of ordinary fluorescent lamps. It uses an electric field effect to excite inert gas atoms to collide with mercury atoms to release low-wavelength ultraviolet light. After passing through the phosphor coated on the lamp wall, it can be converted. Visible light. The function of the reflecting sheet 160 is to reflect the light emitted from the lamp tube 150 to the diffuser sheet 140 to improve the light utilization efficiency of the lamp tube 150. The role of the inner diffusion sheet 140 and the outer protective diffusion sheet 120 is to diffuse the light to adjust the uniformity of the light. The main function of the cymbal 1 30 (also known as a light collector) is to collect light to increase the brightness generated by the backlight module. The dots 1 4 5 are mainly for adjusting the brightness and uniformity of light.
然而，上述的液晶顯示裝置1 〇 〇的缺點在於：雖然燈 管1 5 0的光線係向四面八方散射，但由於液晶面板丨丨〇僅位 於液晶顯示裝置1 0 0的一側面，因此燈管1 5 0向背面所散射 的光線，僅能由反射片1 6 0反射回來，方能達到做為顯示 用光線的功能；如此不但在使得液晶顯示裝置1 〇 〇在光線 反射時消耗了光線利用效率，且只能提供單面顯示功能，However, the above-mentioned liquid crystal display device 100 has a disadvantage in that although the light of the lamp tube 150 is scattered in all directions, since the liquid crystal panel is located on only one side of the liquid crystal display device 100, the lamp tube 1 The light scattered from 50 to the back can only be reflected by the reflection sheet 160 to achieve the function of light for display. This not only makes the liquid crystal display device 100 consume light utilization efficiency when the light is reflected. , And can only provide single-sided display,
0632-9026TWf(nl);AU91241;Calvin.ptd 第6頁 5834710632-9026TWf (nl); AU91241; Calvin.ptd p. 6 583471
並未充分利用光線。 【發明内容】 有鑑於此，本發明之一目 光模組及液晶顯示裝置，將原 改為雙面式背光模組，使得同 液晶面板利用，不僅可同時顯 光線利用效率更為提高。 的即在於提出一種雙面式背 本單面式的直下式背光模組 一背光模組可供正反兩面的 示晝面，且可使背光模組的Underutilized light. [Summary of the Invention] In view of this, one of the eye module and the liquid crystal display device of the present invention changed the original to a double-sided backlight module, so that the same liquid crystal panel can be used, and the light utilization efficiency can be improved at the same time. The idea is to propose a double-sided backlit, single-sided, direct-lit backlight module. A backlight module can be used for the front and back of the daylight display, and can make the backlight module's
本發明揭示一種雙面式背光模組，具有複數光源、設 置於光源之間的複數光反射模組、平行設置於光源兩側的 二擴散片、以及平行設置於擴散片外側的二稜鏡片。 上述雙面式背光模組中，可更包含有平行設置於棱鏡 片外側的二保護擴散片。The invention discloses a double-sided backlight module, which includes a plurality of light sources, a plurality of light reflection modules disposed between the light sources, two diffusion sheets disposed on both sides of the light source in parallel, and two diaphragms disposed on the outside of the diffusion sheet in parallel. The above-mentioned double-sided backlight module may further include two protective diffusion sheets disposed in parallel to the outside of the prism sheet.
另外’本發明揭示一種雙面式液晶顯示裝置。該雙面 式液晶顯示裝置具有一雙面式背光模組以及二液晶面板， 分別平行設置於該雙面式背光模組的外側。其中，雙面式 背光模組包含複數光源、設置於光源之間的複數光反射模 組、平行設置於光源兩侧的二擴散片、平行設置於擴散片 外側的二稜鏡片、以及平行設置於稜鏡片外侧的二保護擴 散片。另外，可由一外框將雙面式背光模組包覆於液晶面 板之間。 本發明之雙面式背光模組及液晶顯示裝置中，光源可 採用一般常見的冷陰極燈管（Cold Cathode Fluorescent Lamp ，CCFL)或EEFL (External electrode fluorescentIn addition, the present invention discloses a double-sided liquid crystal display device. The double-sided liquid crystal display device has a double-sided backlight module and two liquid crystal panels, which are respectively disposed on the outside of the double-sided backlight module in parallel. The double-sided backlight module includes a plurality of light sources, a plurality of light reflection modules disposed between the light sources, two diffuser plates arranged in parallel on both sides of the light source, two diaphragms disposed in parallel on the outside of the diffuser plate, and parallelly disposed on Two protective diffusers on the outside of the sepals. In addition, a double-sided backlight module may be enclosed between the liquid crystal panels by an outer frame. In the double-sided backlight module and the liquid crystal display device of the present invention, the light source can be a common cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCFL) or EEFL (External electrode fluorescent).
0632-9026TWf(nl);AU91241;Calvin.ptd 第7頁 583471 — 五、發明說明（4) 顯式 明圖 更附 能所 點合 優配 和並 徵 ’ 特例 、施 的實 目佳 他較 其之 及體 述具 上個 之數 明舉 發特。 本文明 。使下說 }為，細 mp懂詳 a 易做 【實施方式】 以下舉兩個實施例，用以說明本發明之雙面式背光模 組及液晶顯示裝置。 第一實施例 請參見第2圖，說明本發明第一實施例之雙面式背光 模組及液晶顯示裝置。本實施例之雙面式液晶顯示裝置i 係具有二液晶面板1 〇，分別平行設置於一雙面式背光模組 的外側。雙面式背光模組包含複數燈管（光源）、二擴 散片40、二稜鏡片30、以及二保護擴散片2〇。另外，可由 一外框7 0將雙面式背光模組包覆於液晶面板丨〇之間，且外 框7 0内側分別有一内框6 〇，用以固定雙面式背光模組。 本實施例中，係使用冷陰極燈管（c〇ld Cath〇de Fluorescent Lamp，CCFL )做為燈管（光源）5〇。擴散片 ⑼係分別平行設置於燈管5〇的兩側；稜鏡片3〇係分別平行 設置於擴散片40的外側；保護擴散片2〇則係分別平行設置 於稜鏡片30的外側。擴散片4〇、稜鏡片3〇、以及保護擴散 片20的功用^於習知技術中敘述，在此不再另行說明。 如此，藉由同一雙面式背光模組所發出的光線，即可0632-9026TWf (nl); AU91241; Calvin.ptd Page 7 583471 — V. Description of the invention (4) Explicit clear maps are more suitable for combination and combination of special points and special features. The sum of the descriptions has the specific features of the previous one. This article explains. Let ’s say}, mp, understand a, easy to do. [Embodiment] Two embodiments are described below to explain the double-sided backlight module and liquid crystal display device of the present invention. First Embodiment Referring to FIG. 2, a double-sided backlight module and a liquid crystal display device according to a first embodiment of the present invention will be described. The double-sided liquid crystal display device i of this embodiment has two liquid crystal panels 10, which are respectively disposed on the outside of a double-sided backlight module in parallel. The double-sided backlight module includes a plurality of lamp tubes (light sources), two diffuser sheets 40, two diaphragms 30, and two protective diffuser sheets 20. In addition, a double-sided backlight module can be enclosed between the liquid crystal panel by an outer frame 70, and there is an inner frame 60 inside the outer frame 70, respectively, for fixing the double-sided backlight module. In this embodiment, a cold cathode lamp (CCFL) is used as the lamp (light source) 50. The diffusing sheet ⑼ is arranged parallel to both sides of the lamp tube 50; the cymbal sheet 30 is arranged in parallel to the outside of the diffusing sheet 40; the protective diffusion sheet 20 is arranged in parallel to the outside of the cymbal sheet 30 respectively. The functions of the diffusion sheet 40, the cymbal sheet 30, and the protection sheet 20 are described in the conventional art, and will not be described separately here. In this way, the light emitted by the same double-sided backlight module can be used.
Ι1Μ $ 8頁 583471 五、發明說明（5) 對兩側之液晶面板1 〇同時提供光線，不僅可同時顯示畫 · 面，且可使背光模組的光線利用效率更為提高。 第二實施例 · 請參見第3圖，說明本發明第二實施例之雙面式背光 模組及液晶顯示裝置。本實施例之雙面式液晶顯示裝置Γ 係具有二液晶面板1 〇，分別平行設置於^一雙面式背光模組 的外側。雙面式背光模組包含複數燈管（光源）5 0、複數 光反射模組80、二擴散片4〇、二稜鏡片30、以及二保護擴 散片2 0。另外，可由一外框7 〇將雙面式背光模組包覆於液 _ 晶面板10之間，且外框7〇内側分別有一内框6〇，用以固定 雙面式背光模組。 本實施例中，係使用冷陰極燈管（cold Cathode FluoRscent Lamp，CCFL )做為燈管（光源）50。擴散片 4 0係分別平行設置於燈管5 〇的兩側；稜鏡片3 〇係分別平行 設置於擴散片4 〇的外側；保護擴散片2 〇則係分別平行設置 於棱鏡片30的外側。擴散片40、稜鏡片30、以及保護擴散 片2 0的功用已於習知技術中敘述，在此不再另行說明。 ^ 光反射模組8 0之目的係在於將燈管5 0的光線反射至擴 政片，以更為提高光線利用效率。在製造時，玎透過控制 _ 光反射模組80的幾何尺寸及表面反射係數，決定光線的分 佈及利用效率。 士此藉由同一雙面式背光模組所發出的光線，即可 對兩側之液晶面板i 〇同時提供光線，不僅可同時顯示晝面 〇632-9026TWf(nl);AU91241；Calvin ntd 第9頁 583471 五、發明說明（6) ，且可使背光模組的光線利用效率更為提高。 雖然本發明已以具體之較佳實施例揭露如上，然其並 非用以限定本發明，任何熟習此項技藝者，在不脫離本發 明之精神和範圍内，仍可作些許的更動與潤飾，因此本發 明之保護範圍當視後附之申請專利範圍所界定者為準。I1M $ 8 pages 583471 V. Description of the invention (5) Simultaneously providing light to both sides of the LCD panel 10, not only can display pictures and screens at the same time, but also can improve the light utilization efficiency of the backlight module. Second Embodiment Referring to FIG. 3, a double-sided backlight module and a liquid crystal display device according to a second embodiment of the present invention will be described. The double-sided liquid crystal display device Γ in this embodiment has two liquid crystal panels 10, which are respectively disposed in parallel to the outside of a double-sided backlight module. The double-sided backlight module includes a plurality of light tubes (light sources) 50, a plurality of light reflection modules 80, two diffusion sheets 40, two cymbals 30, and two protective diffusion sheets 20. In addition, a double-sided backlight module can be enclosed between the liquid crystal panel 10 by an outer frame 70, and an inner frame 60 can be respectively arranged on the inner side of the outer frame 70 to fix the double-sided backlight module. In this embodiment, a cold cathode fluorescent lamp (cold cathode fluo rscent lamp, CCFL) is used as the lamp (light source) 50. The diffusion sheet 40 is disposed on both sides of the lamp tube 50 in parallel; the cymbal sheet 30 is disposed on the outside of the diffusion sheet 40 in parallel; the protective diffusion sheet 20 is disposed on the outside of the prism sheet 30 in parallel. The functions of the diffusion sheet 40, the cymbal sheet 30, and the protection of the diffusion sheet 20 have been described in the prior art, and will not be described separately here. ^ The purpose of the light reflection module 80 is to reflect the light from the lamp tube 50 to the expansion film, so as to further improve the light utilization efficiency. At the time of manufacture, the geometry and surface reflection coefficient of the light reflection module 80 determines the light distribution and utilization efficiency. In this way, the light emitted from the same double-sided backlight module can simultaneously provide light to both sides of the LCD panel i 〇, not only can display the daytime surface at the same time 632-9026TWf (nl); AU91241; Calvin ntd 9 Page 5347471 V. Description of the invention (6), and the light utilization efficiency of the backlight module can be further improved. Although the present invention has been disclosed as above with specific preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can still make some changes and decorations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended patent application.
0632-9026TWf(n 1); AU91241 ;Cal vin. ptd 第10頁 583471 圖式簡單說明 第1圖係習知使用直下式背光模組的液晶顯示裝置之 示意圖。 第2圖係本發明第一實施例之雙面式液晶顯示裝置之 示意圖。 第3圖係本發明第二實施例之雙面式液晶顯示裝置之 示意圖。 第4圖係第二實施例中光源與光反射模組之示意圖。 符號說明： 1〜 液晶顯不裝置， 10、 ^液晶面板， 20 - -擴散片； 3 0〜棱鏡片； 40， -擴散板； 50， 。燈管（光源） 60〜内框； 7 0〜外框； 80， -光反射模組； 100 〜液晶顯示裝置 110 〜液晶面板； 120 〜擴散片； 130 〜稜鏡片； 140 〜擴散板； 145 〜調光網點；0632-9026TWf (n 1); AU91241; Cal vin. Ptd Page 10 583471 Brief description of the drawings Figure 1 is a schematic view of a conventional liquid crystal display device using a direct type backlight module. Fig. 2 is a schematic diagram of a double-sided liquid crystal display device according to a first embodiment of the present invention. Fig. 3 is a schematic diagram of a double-sided liquid crystal display device according to a second embodiment of the present invention. FIG. 4 is a schematic diagram of a light source and a light reflection module in the second embodiment. Explanation of symbols: 1 ~ liquid crystal display device, 10, ^ liquid crystal panel, 20--diffusion sheet; 30-prism sheet; 40,-diffusion plate; 50,. Light tube (light source) 60 ~ inner frame; 70 ~ outer frame; 80, -light reflection module; 100 ~ liquid crystal display device 110 ~ liquid crystal panel; 120 ~ diffusive sheet; 130 ~ cymbal sheet; 140 ~ diffusive sheet; 145 ~ Dimming outlets;
0632-9026TWf(nl);AU91241;Calvin.ptd 第11頁 583471 圖式簡單說明 1 5 0〜燈管； 1 6 0〜反射板； 1 7 0〜外框。 iHil 0632-9026TWf(nl);AU91241;Calvin.ptd 第12頁0632-9026TWf (nl); AU91241; Calvin.ptd Page 11 583471 Simple illustration of the drawings 1 50 ~ light tube; 16 0 ~ reflective plate; 1 7 0 ~ outer frame. iHil 0632-9026TWf (nl); AU91241; Calvin.ptd Page 12
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| TWI402577B (en) * | 2010-05-14 | 2013-07-21 | Wistron Corp | Backlight module and display device with two-sided light emitting structure |
-
2003
- 2003-05-30 TW TW92114686A patent/TW583471B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TW200426459A (en) | 2004-12-01 |
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Legal Events
| Date | Code | Title | Description |
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| MM4A | Annulment or lapse of patent due to non-payment of fees |