TWI471606B - Three-dimensional display system with sequential colors-emitting backlit, and method thereof - Google Patents
Three-dimensional display system with sequential colors-emitting backlit, and method thereof Download PDFInfo
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本發明涉及一種循序顯色之立體顯示系統與方法，特別是指利用三原色背光模組而省略彩色濾光片的一種立體影像顯示面板與顯示方法。The invention relates to a stereoscopic display system and method for sequential color development, in particular to a stereoscopic image display panel and a display method for omitting a color filter by using a three primary color backlight module.
一般顯示器模組可參考圖1所示之習知技術顯示器模組之組合示意圖。圖中顯示有利用白光為主要光源的背光模組11，一般光源可設有冷陰極管(CCFL)或是經調光後的白光發光二極體(LED)，此類顯示面板在其內部或外側通常設有彩色濾光片15，用以顯示彩色影像，透過調整通過彩色濾光片的白光達到顯示各種顏色的目的。For a general display module, reference may be made to the combination diagram of the prior art display module shown in FIG. The figure shows a backlight module 11 using white light as a main light source. The general light source may be provided with a cold cathode tube (CCFL) or a dimmed white light emitting diode (LED). The display panel is inside or The outer side is usually provided with a color filter 15 for displaying a color image, and the purpose of displaying various colors by adjusting the white light passing through the color filter.
圖中顯示的顯示器模組包括有產生背光的背光模組11，背光模組11之出光面則可設有用以均光、增光或其他功能的光學膜12，接著則設有液晶面板14與其兩側的第一偏光板13與第二偏光板16，此例中在液晶面板14之一側設有彩色濾光片15。The display module shown in the figure comprises a backlight module 11 for generating backlights. The light-emitting surface of the backlight module 11 can be provided with an optical film 12 for uniform light, brightness enhancement or other functions, and then a liquid crystal panel 14 is provided. The first polarizing plate 13 and the second polarizing plate 16 are provided on the side, and in this example, a color filter 15 is provided on one side of the liquid crystal panel 14.
根據液晶顯示器的顯示原理，背光模組11產生的光經第一偏光板13形成具有偏振態的光源，液晶面板14之組成更包括根據電力產生控制液晶分子旋轉角度的電極層，透過液晶分子的狀態改變，來控制背光是否穿透或是部份穿透，配合彩色濾光片15而產生具有各種顏色的影像。According to the display principle of the liquid crystal display, the light generated by the backlight module 11 forms a light source having a polarization state via the first polarizing plate 13. The liquid crystal panel 14 further includes an electrode layer that controls the rotation angle of the liquid crystal molecules according to the power generation, and transmits the liquid crystal molecules. The state is changed to control whether the backlight penetrates or partially penetrates, and the color filter 15 is used to generate images of various colors.
在傳統的液晶顯示器顯示原理中，因為利用了偏光板對非偏振的背光進行偏光，因此至少會損失一半的亮度，若再經過另一次偏光與彩色濾光片的過濾，光亮度則損失更多。習知解決亮度的方式不外乎是利用其他減少光耗或增亮的方式，或是加強背光的亮度，但此類方式不僅有其物理上的限制，更是增加電力消耗或是其他光學膜使用的成本。In the conventional liquid crystal display display principle, since the polarizing plate is used to polarize the non-polarized backlight, at least half of the brightness is lost, and if another polarization and color filter are filtered, the brightness is lost more. . The way to solve the brightness is to use other ways to reduce light consumption or brighten, or to enhance the brightness of the backlight, but this way not only has physical limitations, but also increases power consumption or other optical film. The cost of use.
除了習知平面顯示器以外，逐漸成熟的立體顯示技術中的立體液晶屏同樣都是以白光做為發光源，再配合液晶屏上彩色濾光片的工藝，來達到彩色顯示的功能。In addition to the conventional flat-panel display, the stereoscopic liquid crystal display in the mature stereoscopic display technology also uses the white light as the light source and the color filter on the liquid crystal screen to achieve the color display function.
在立體影像的顯示方法中，可略分為雙顯示器的顯示方式及單顯示器的顯示方式，雙顯示器的顯示方式如雙投影機及雙液晶顯示器；此種方式需要專業的左右影像角度調整，及配合左右分光的偏光眼鏡，來達到立體顯示的目的。因為調整不易及架設成本高，所以無法達到普及的狀況。單顯示器的顯示方式如主動式及被動式，主動式即一般電子快門同步顯示，及被動式的偏光式或光柵式顯示方式，因為使用容易，因此已經成為市場主流。In the display method of the stereoscopic image, the display mode of the dual display and the display mode of the single display can be slightly divided, and the display mode of the dual display is such as a dual projector and a dual liquid crystal display; this method requires professional left and right image angle adjustment, and The polarized glasses with left and right splitting are combined to achieve the purpose of stereoscopic display. Because the adjustment is not easy and the cost of erection is high, the situation of universalization cannot be achieved. Single-display display modes such as active and passive, active or general electronic shutter synchronous display, and passive polarized or raster display, have become mainstream in the market because of their ease of use.
但是同樣地，立體顯示器仍會有亮度損失的缺點，又因為加入立體膜的原因，連同解析度也都會有減少。即使是同步快門(synchronized shutter)的方式，除了亮度的損失外，更因為閃爍的問題，使人們眼睛容易疲勞。However, similarly, stereoscopic displays still have the disadvantage of loss of brightness, and because of the addition of the three-dimensional film, the resolution is also reduced. Even in the case of a synchronized shutter, in addition to the loss of brightness, the problem of flicker is more likely to make people's eyes fatigue.
有鑑於習知常用的液晶顯示器，不論是平面顯示或是立體顯示，都會有亮度損失或是解析度下降的缺點，因此本發明提出一種循序顯色之立體顯示系統與顯示方法，透過背光模組的設計，能夠省略傳統用於顯示器內的彩色濾光片，並利用循序控制發光元件的方式，達到彩色顯示，或可判斷立體膜顯示立體影像。In view of the conventional liquid crystal display, whether it is a flat display or a stereo display, there is a disadvantage of loss of brightness or resolution. Therefore, the present invention provides a stereoscopic display system and display method for sequential color development, through the backlight module. The design can omit the color filter conventionally used in the display, and realize the color display by sequentially controlling the light-emitting elements, or can judge the stereoscopic film to display the stereoscopic image.
根據發明實施例，循序顯色之立體顯示系統包括有一接收影像訊號的立體影像處理單元，並可經立體訊號轉換後產生一立體影像訊號，比如是左右兩個視角的影像訊號。According to an embodiment of the invention, a stereoscopic display system for sequential color development includes a stereoscopic image processing unit that receives image signals, and can generate a stereoscopic image signal after being converted by a stereo signal, such as image signals of two left and right viewing angles.
系統包括有顯示立體影像的立體影像顯示裝置，在無設置彩色濾光片的實施例中，裝置包括的背光模組設有多組由第一發光元件、第二發光元件與第三發光元件所組成的發光單元，較佳則是分別為紅色、綠色、藍色的發光二極體，各發光單元中的第一發光元件、第二發光元件與第三發光元件將循序由一出光面射出光線，透過在很短的時間內循序射出不同顏色的背光，可以產生如白光的光源，因此可以不用設置彩色濾光片。立體影像顯示裝置在其他結構中更具備有光學膜、液晶面板與顯示立體影像用的立體膜。The system includes a stereoscopic image display device for displaying a stereoscopic image. In an embodiment where no color filter is disposed, the device includes a backlight module provided with a plurality of groups of first, second, and third light-emitting elements. Preferably, the light-emitting units are respectively red, green, and blue light-emitting diodes, and the first light-emitting elements, the second light-emitting elements, and the third light-emitting elements in each of the light-emitting units sequentially emit light from a light-emitting surface. By sequentially emitting backlights of different colors in a short period of time, a light source such as white light can be generated, so that it is not necessary to provide a color filter. The stereoscopic image display device further includes an optical film, a liquid crystal panel, and a three-dimensional film for displaying a stereoscopic image.
立體顯示系統更包括有電性連接上述立體影像處理單元與立體影像顯示裝置的顯示控制單元，經顯示控制單元接收立體影像訊號後，產生控制上述液晶面板內液晶分子旋轉角度的控制訊號。The stereoscopic display system further includes a display control unit electrically connected to the stereoscopic image processing unit and the stereoscopic image display device, and after receiving the stereoscopic image signal by the display control unit, generating a control signal for controlling the rotation angle of the liquid crystal molecules in the liquid crystal panel.
立體顯示系統包括有循序點亮上述各發光元件的背光驅動模組，背光驅動模組將根據一時脈訊號產生單元產生的時脈訊號循序點亮背光模組內各發光單元中的第一發光元件、第二發光元件與第三發光元件。系統再利用一訊號同步單元同步上述點亮各發光元件的發光時脈訊號與立體影像訊號，目的是能在一個時脈週期內循序點亮各發光單元內之紅色、綠色與藍色發光二極體，產生穩定而亮度足夠的影像。The stereoscopic display system includes a backlight driving module for sequentially lighting the respective light emitting elements, and the backlight driving module sequentially illuminates the first light emitting elements of each of the light emitting units in the backlight module according to the clock signal generated by the clock signal generating unit. a second light emitting element and a third light emitting element. The system then uses a signal synchronization unit to synchronize the illumination signal and the stereo image signal of each of the illumination elements, so as to sequentially illuminate the red, green and blue light-emitting diodes in each of the illumination units in one clock cycle. Body, producing a stable and bright enough image.
根據實施例之一，上述無設置彩色濾光片的立體影像顯示裝置中的背光模組可為一直下式(direct-type)面板背光模組，因此其中各發光單元內的第一發光元件、第二發光元件與第三發光元件所組成的複數個發光單元以陣列型式排列於直下式面板背光模組內。According to one embodiment, the backlight module in the stereoscopic image display device without the color filter may be a direct-type panel backlight module, and thus the first light-emitting component in each of the light-emitting units, The plurality of light emitting units composed of the second light emitting element and the third light emitting element are arranged in an array pattern in the direct type panel backlight module.
於另一實施例中，立體影像顯示裝置中的背光模組為一側照式面板背光模組，複數個發光單元將並排於側照式面板背光模組之一側或兩側，再經由一導光板將紅色、綠色與藍色發光二極體的光導向射入立體影像顯示裝置。In another embodiment, the backlight module in the stereoscopic image display device is a side-lit panel backlight module, and the plurality of light-emitting units are arranged side by side on one side or both sides of the side-illuminated panel backlight module, and then The light guide plate guides the light of the red, green and blue light-emitting diodes into the stereoscopic image display device.
若為應用在觸控裝置上，本發明的循序顯色之立體顯示系統，可設有一觸控屏在立體影像顯示裝置上。If applied to a touch device, the sequential color display stereoscopic display system of the present invention can be provided with a touch screen on the stereoscopic image display device.
根據循序顯色之立體顯示方法的實施例，方法包括有先由立體顯示系統接收一顯示控制訊號，其中包括立體影像處理單元接收影像訊號，經立體影像處理單元轉換為一立體影像訊號。According to an embodiment of the method for displaying a stereoscopic color display, the method includes: receiving, by the stereoscopic display system, a display control signal, wherein the stereo image processing unit receives the image signal, and converts the image signal into a stereo image signal by the stereo image processing unit.
接著，背光驅動模組接收一時脈訊號，系統根據時脈訊號，由背光驅動模組循序點亮立體影像顯示裝置內之背光模組中各發光單元中的第一發光元件、第二發光元件與第三發光元件。顯示控制單元由立體影像處理單元接收立體影像訊號，將產生控制立體影像顯示裝置中之液晶面板內液晶分子旋轉角度的控制訊號。Then, the backlight driving module receives a clock signal, and the system sequentially illuminates the first light emitting component and the second light emitting component in each of the light emitting units in the backlight module in the stereoscopic image display device according to the clock signal. The third light emitting element. The display control unit receives the stereoscopic image signal from the stereoscopic image processing unit, and generates a control signal for controlling the rotation angle of the liquid crystal molecules in the liquid crystal panel in the stereoscopic image display device.
之後，訊號同步單元同步化背光驅動模組循序點亮各發光元件的發光時脈訊號與立體影像訊號，因此可以透過循序點亮各發光元件的光，經立體膜分光後產生立體影像。Then, the signal synchronization unit synchronizes the backlight driving module to sequentially illuminate the illumination clock signal and the stereo image signal of each of the light-emitting elements, so that the light of each of the light-emitting elements can be sequentially illuminated, and the stereoscopic image is generated after being separated by the stereoscopic film.
被動式的顯示器可以透過光柵(barrier)或是偏光的方式將左右影像分光產生左右視角的影像，因此觀看的人可以透過特殊的眼鏡在腦中組合呈現在左眼與右眼影像，因此取得立體的視覺效果。The passive display can split the left and right images through the barrier or polarized light to produce the left and right viewing angle images. Therefore, the viewer can display the left and right eye images in the brain through special glasses, so that the stereoscopic image is obtained. Visual effect.
被動式的立體顯示方式包括將立體膜(3D膜)貼合於一般液晶屏上，透過光學膜分光的原理，如立體膜可為一種柱狀鏡(lenticular lens)的實施方式，可將由顯示器產生的影像透過光學原理產生不同方向的影像。其他實施方式則包括利用雙液晶屏做切換開關，或在一般液晶屏上印刷或鍍上立體膜的結構。The passive stereoscopic display method includes the principle that a three-dimensional film (3D film) is attached to a general liquid crystal screen and transmitted through an optical film. For example, the three-dimensional film can be an embodiment of a lenticular lens, which can be generated by the display. The image produces images in different directions through optical principles. Other embodiments include a dual LCD screen as a diverter switch, or a structure in which a three-dimensional film is printed or plated on a general liquid crystal panel.
以柱狀鏡光學膜實現的立體膜主要是利用其中相對設置的稜鏡(prism film)結構，各稜鏡結構可以以適當的間隔設置，將射入的光線有效折射出來，將立體影像訊號分為左右兩個視角的影像，實施方式可參考美國專利第7224529號(公告日：May 29,2007)或第7210836號(公告日：May 1,2007)所揭露的連續微結構。The three-dimensional film realized by the columnar mirror optical film mainly utilizes a prism film structure which is disposed oppositely, and each of the 稜鏡 structures can be disposed at an appropriate interval to effectively refract the incident light, and divide the stereoscopic image signal. For the image of the two viewing angles, the embodiment can refer to the continuous microstructure disclosed in U.S. Patent No. 7,224,529 (Announcement: May 29, 2007) or No. 7210836 (Announcement: May 1, 2007).
但因為立體膜，又加上傳統顯示器中的各種光學元件，所以亮度會減低，鑑於習知需要提高背光的亮度而增加耗電量的缺點，甚至是因為使用左右影像同時存在的方式，使得影像的解析度會降低，本發明則提出一種循序顯色之立體顯示系統與立體顯示方法，主要在被動式立體顯示技術的基礎上，改善顯示器面板的製程，來達到降低立體液晶屏成本、提高顯示解析度、增加立體度、增加液晶顯示屏的亮度、提升色彩飽和度。However, because of the three-dimensional film, and the various optical components in the conventional display, the brightness is reduced, and the shortcomings of increasing the power consumption due to the need to increase the brightness of the backlight, even because of the simultaneous use of left and right images, make the image The resolution of the present invention is reduced. The present invention provides a stereoscopic display system and a stereoscopic display method for sequential color development, which mainly improves the manufacturing process of the display panel based on the passive stereoscopic display technology, thereby reducing the cost of the stereoscopic liquid crystal panel and improving display resolution. Degree, increase stereo, increase the brightness of the LCD screen, and improve color saturation.
本發明涉及一種循序顯色之立體顯示系統與方法，特別是指利用三原色背光模組而省略彩色濾光片的立體影像顯示裝置，如圖2所示之循序顯色之立體顯示面板實施例示意圖之一。The present invention relates to a stereoscopic display system and method for sequential color development, and more particularly to a stereoscopic image display device that omits a color filter by using a three primary color backlight module, and a schematic diagram of an embodiment of a sequential color display stereoscopic display panel as shown in FIG. one.
根據此實施例，立體影像顯示裝置可設置一直下式面板背光模組21，此直下式面板背光模組21之特色在於其中設有多枚陣列排列的發光二極體(LED)，此例為不同顏色的發光晶片組成一個發光單元，比如各發光單元包括紅色(R)、綠色(G)與藍色(B)三原色的發光元件，以陣列型式平均舖設於直下式面板背光模組21之基板上。According to this embodiment, the stereoscopic image display device can be provided with a direct-type panel backlight module 21, and the direct-type panel backlight module 21 is characterized in that a plurality of arrayed light-emitting diodes (LEDs) are arranged therein, in this case The light-emitting chips of different colors constitute one light-emitting unit. For example, the light-emitting elements of the light-emitting units include red (R), green (G) and blue (B) light-emitting elements, and are evenly laid on the substrate of the direct-type panel backlight module 21 in an array pattern. on.
在直下式面板背光模組21之出光面之側則可依照實際需要貼附光學膜22，此類光學膜22之功效可包括均光、散光(diffusion)的效果，或是增光的效果，可讓背光的光源可以均勻地照射液晶面板23。On the side of the light-emitting surface of the direct-type panel backlight module 21, the optical film 22 can be attached according to actual needs. The effect of the optical film 22 can include the effect of homogenizing, diffing, or brightness enhancement. The light source of the backlight can uniformly illuminate the liquid crystal panel 23.
此類直下式面板背光模組21可以依從畫面不同部份的光度變化，快速地微調其中光源的明暗，如各發光二極體的明暗，大為提高動態對比度。根據實施例，直下式面板背光模組21中背光所使用的主要為紅、綠、藍三種單色發光二極體，使得顯示影像有更廣色域。The direct-type panel backlight module 21 can quickly adjust the brightness of the light source according to the luminosity change of different parts of the screen, such as the brightness of each light-emitting diode, and greatly improve the dynamic contrast. According to the embodiment, the backlights used in the direct-type panel backlight module 21 are mainly three kinds of monochromatic light-emitting diodes of red, green and blue, so that the display image has a wider color gamut.
液晶面板23結合於光學膜22上射出光線之側，主要元件則有第一偏光板231、第二偏光板233與其中的液晶層232，另有電極層則未顯示於此圖中。實施例在液晶面板23之射出光線的一側設有顯示立體影像的立體膜24，立體膜24貼附於背光模組21射出光線之側，立體影像訊號經立體膜24分光後顯示為立體影像。若實施於觸控裝置上，更可於立體膜24上射出光線之側設有觸控屏25。The liquid crystal panel 23 is coupled to the side of the optical film 22 that emits light. The main components include a first polarizing plate 231, a second polarizing plate 233, and a liquid crystal layer 232 therein, and the other electrode layers are not shown in the figure. In the embodiment, a stereoscopic film 24 for displaying a stereoscopic image is disposed on a side of the liquid crystal panel 23 that emits light. The stereoscopic film 24 is attached to the side of the backlight module 21 that emits light, and the stereoscopic image signal is displayed as a stereoscopic image after being separated by the stereoscopic film 24. . If implemented on the touch device, the touch screen 25 can be disposed on the side of the stereo film 24 that emits light.
圖3顯示為本發明循序顯色之立體顯示面板實施例示意圖之二。此例中的立體影像顯示裝置則採用一種側照式面板背光模組(Edge-type backlit)，其特色在於側照式面板背光模組的背光技術是把光源(第一光源301、第二光源302)設於背光模組的一側，或是兩側，甚至是四邊。如圖所示，背光模組之下方設有一反射片31，可以將光線充分反射成為有效的背光。FIG. 3 is a second schematic view showing an embodiment of a stereoscopic display panel for sequential color development of the present invention. The stereoscopic image display device in this example adopts an edge-type backlit module, which is characterized in that the backlight technology of the side-lit panel backlight module is a light source (the first light source 301 and the second light source). 302) is disposed on one side of the backlight module, or on both sides, or even four sides. As shown in the figure, a reflective sheet 31 is disposed under the backlight module to sufficiently reflect the light into an effective backlight.
圖中背光模組中設有導光板32，第一光源301與第二光源302示意設於兩側，導光板32之目的係透過其材料特性將兩側或多側的光源導向進入顯示裝置內，經導光板32吸收的光線將可以向各個角度擴散，因此有均光的效果，配合後方反射片31，能夠有效形成側照式面板背光模組的背光，增加光線的使用效率。A light guide plate 32 is disposed in the backlight module. The first light source 301 and the second light source 302 are disposed on both sides. The purpose of the light guide plate 32 is to guide the light sources on the two sides or sides into the display device through the material properties thereof. The light absorbed by the light guide plate 32 can be diffused to various angles, so that there is a uniform light effect. With the rear reflection sheet 31, the backlight of the side-illuminated panel backlight module can be effectively formed, and the use efficiency of light is increased.
上述第一光源301與第二光源302分別可為並排的發光單元所組成，各發光單元可由第一發光元件、第二發光元件與第三發光元件所組成，較佳分別為紅色、綠色與藍色發光二極體，複數個發光單元並排於側照式面板背光模組之一側或兩側，經由上述的導光板32將紅色、綠色與藍色發光二極體的光導向射入立體影像顯示裝置。Each of the first light source 301 and the second light source 302 may be a side by side light emitting unit, and each of the light emitting units may be composed of a first light emitting element, a second light emitting element and a third light emitting element, preferably red, green and blue respectively. The color light-emitting diodes, the plurality of light-emitting units are arranged side by side on one side or both sides of the side-illuminated panel backlight module, and the light of the red, green and blue light-emitting diodes are guided into the stereoscopic image via the light guide plate 32 Display device.
此例中，光學膜33接著貼附於導光板32上，光學膜33依照需求有不同的功能，包括均光、增光等，亦可強化面板結構。接著在光學膜33上結合液晶面板34，液晶面板34之主要結構包括有第一偏光板341、第二偏光板343與液晶層342。接著，立體膜35可將立體影像訊號分光轉換為左右視角的影像，觸控屏36則是用於觸控裝置上。In this example, the optical film 33 is then attached to the light guide plate 32. The optical film 33 has different functions according to requirements, including homogenizing, brightness enhancement, etc., and the panel structure can also be strengthened. Next, the liquid crystal panel 34 is bonded to the optical film 33. The main structure of the liquid crystal panel 34 includes a first polarizing plate 341, a second polarizing plate 343, and a liquid crystal layer 342. Then, the stereoscopic film 35 can split the stereoscopic image signal into the left and right viewing angle images, and the touch screen 36 is used for the touch device.
根據實施例，側照式面板背光模組的光源為設於導光板32的一側或多側上，同樣透過本發明循序顯色的技術，在一個時脈週期內循序發出不同顏色的光，同樣產生白光的背光效果，並能兼具更廣色域的效果。更者，由於背光直接射出不同顏色的光，如紅、綠、藍，因此此顯示裝置可以省略傳統上使用的彩色濾光片，不僅節省成本，亦減少光的損耗。According to the embodiment, the light source of the side-illuminated panel backlight module is disposed on one or more sides of the light guide plate 32, and also sequentially emits different colors of light in a clock cycle through the sequential color development technique of the present invention. It also produces a white backlighting effect and can have a wider color gamut effect. Moreover, since the backlight directly emits light of different colors, such as red, green, and blue, the display device can omit the color filter conventionally used, which not only saves cost but also reduces light loss.
更者，由於僅省略的彩色濾光片，因此可應用現有的光罩製程，無須額外的製程設計。Moreover, since only the color filters are omitted, the existing mask process can be applied without additional process design.
應用於本發明提出的立體顯示面板中的立體膜可以為多種實施方式，其中之一如圖4A所示的單凸柱狀鏡的結構，更可如圖4B所示的一種凹凸柱狀鏡的結構，或是如圖4C所示的一種雙凸柱狀鏡結構。The three-dimensional film applied to the stereoscopic display panel proposed by the present invention may be in various embodiments, one of which is a single convex cylindrical mirror as shown in FIG. 4A, and the other is a concave-convex cylindrical mirror as shown in FIG. 4B. Structure, or a double convex cylindrical mirror structure as shown in FIG. 4C.
另外，立體膜亦可實現為偏光式(polarizer)或光柵式(barrier)的光學膜，如圖4D與圖4E所示的實施例結構示意圖。In addition, the three-dimensional film can also be realized as a polarizer or a barrier optical film, as shown in the structural diagrams of the embodiment shown in FIGS. 4D and 4E.
其中圖4D所示的偏光式立體膜即使用一種偏光鏡片，主要原理是利用光的波動性，將由顯示面板投射出的影像光線經偏光鏡片使之遮蔽或是通過特定方向的光，因而可區分為左右眼影像，圖式為其中一種實施方式的線偏光(linear polarizer)立體膜。經過液晶面板產生的光線都是經過偏振的光(polarized)，因此透過控制此偏光鏡片所產生的遮蔽效果(如垂直或水平方向)可以讓兩個眼睛看到不同的影像(如一隻眼睛看到垂直偏振光，另一隻看到水平偏振光)，因此產生立體顯示效果。The polarized three-dimensional film shown in FIG. 4D uses a polarized lens. The main principle is to use the undulation of light to shield the image light projected by the display panel through the polarizing lens or to pass light in a specific direction. For the left and right eye images, the figure is a linear polarizer of one of the embodiments. The light generated by the liquid crystal panel is polarized, so that the shielding effect (such as vertical or horizontal direction) produced by controlling the polarizing lens allows the two eyes to see different images (such as one eye seeing Vertically polarized light, the other sees horizontally polarized light), thus producing a stereoscopic display effect.
再以圖4E所示的光柵式立體膜為例。光柵式立體膜利用光線通過光柵產生不同方向的折射光線的原理，能夠將影像投射於左右不同方向，因此使畫面中的影像在人的雙眼中呈現出視差，產生立體顯示效果。上述光柵式立體膜可與柱狀鏡配合，在一定的距離與視角內產生具有特定景深的立體影像。Taking the grating type three-dimensional film shown in FIG. 4E as an example. The grating type three-dimensional film utilizes the principle that light rays generate refracted rays in different directions through the grating, and can project the image in different directions on the left and right sides, so that the image in the picture exhibits parallax in the eyes of the person, and a stereoscopic display effect is produced. The above-mentioned grating type stereo film can cooperate with the columnar mirror to generate a stereoscopic image with a specific depth of field within a certain distance and viewing angle.
圖5A至圖5D顯示為本發明顯示面板所利用之三色發光二極體佈置示意圖，這些實施例僅為列舉，並非用於限制本發明之實施態樣。5A to 5D are schematic diagrams showing the arrangement of the three-color light-emitting diodes used in the display panel of the present invention. These embodiments are merely illustrative and are not intended to limit the implementation of the present invention.
圖5A顯示紅色(R)、綠色(G)與藍色(B)三色發光元件的排列實施例，此例將R、G、B三色順序排列，一組紅色(R)、綠色(G)與藍色(B)形成一個發光單元。根據本發明循序顯色的技術能夠在一個時脈週期內順序射出紅光、綠光與藍光，因此同樣可以產生白光背光的效果，又在顯示技術上透過顯示控制晶片分別產生不同顏色，可以省略彩色濾光片的使用。Fig. 5A shows an arrangement example of red (R), green (G) and blue (B) three-color light-emitting elements, in this case, R, G, and B are sequentially arranged, and a set of red (R), green (G) ) forms a light-emitting unit with blue (B). The technique of sequential color development according to the present invention can sequentially emit red light, green light and blue light in one clock cycle, so that the effect of white light backlight can also be generated, and different colors can be generated by display control wafers in display technology, which can be omitted. The use of color filters.
圖5B顯示為另一種三色發光二極體排列的方式，同樣一組紅色(R)、綠色(G)與藍色(B)形成一個發光單元。Fig. 5B shows the manner in which another three-color light emitting diode is arranged, and the same set of red (R), green (G) and blue (B) forms one light emitting unit.
圖5C則是示意顯示為三色發光二極體成組排列，各組形成一個發光單元，複數組發光單元陣列排列於背光模組上，特別是直下式面板背光模組的應用。FIG. 5C is a schematic diagram showing the arrangement of three-color light-emitting diodes in groups, each group forming one light-emitting unit, and the array of multiple-array light-emitting units arranged on the backlight module, especially the application of the direct-type panel backlight module.
圖5D示意顯示再一發光單元的實施態樣，此例為在一個發光單元內設有紅色發光二極體、綠色發光二極體、藍色發光二極體，並包括一個白色的發光二極體，此發光單元將以陣列型式排列於背光模組內，背光產生方式係如本發明所提供的循序點亮各色發光二極體的技術，在一個幀的時脈週期內循序點亮一組發光單元內的各色發光元件。此例中的一個發光單元內的白色光源可為恆亮，或是也如同其他各色發光二極體，由背光驅動模組(如圖8所述)循序點亮紅色、綠色、藍色與白色光源。FIG. 5D is a schematic view showing an embodiment of a further light-emitting unit, which is provided with a red light-emitting diode, a green light-emitting diode, a blue light-emitting diode, and a white light-emitting diode in one light-emitting unit. The light-emitting unit is arranged in an array pattern in the backlight module. The backlight generation method is a technique for sequentially lighting the color-emitting diodes according to the present invention, and sequentially lighting a group in a clock cycle of one frame. Light-emitting elements of various colors in the light-emitting unit. In this example, the white light source in one of the light-emitting units can be constant light, or like other light-emitting diodes, the backlight driving module (as shown in FIG. 8) sequentially illuminates red, green, blue, and white. light source.
本發明實施例主要是直接在背光模組內採用了紅色(R)、綠色(G)與藍色(B)三色發光元件，透過循序發光的方式產生白光背光，其中三色發光二極體循序發光之時脈的設計如圖6所示。The embodiment of the invention mainly adopts red (R), green (G) and blue (B) three-color light-emitting elements directly in the backlight module, and generates white light backlight through sequential light-emitting, wherein the three-color light-emitting diodes The design of the clock of sequential illumination is shown in Figure 6.
時脈圖之下方顯示一個同步訊號SYNC，由一時脈產生單元產生，提供給顯示系統中控制背光的電路，幀時脈TF 顯示為影像訊號中各幀(frame)所需的時脈週期，在一個時脈週期內同步且循序產生三個時脈訊號，系統將根據各時脈訊號循序點亮各發光元件，如在紅光時脈TR 點亮紅色發光二極體，並在此時間後關閉；在綠光時脈TG 內點亮綠色發剛二極體，亦在時間之後關閉；在藍光時脈TB 內點亮藍光發光二極體，再於時間之後關閉。因此，每個幀的顯示都搭配著紅色(R)、綠色(G)與藍色(B)三色發光元件的照射，可以充分顯示各幀的色彩，增加飽和度。A synchronization signal SYNC is displayed below the clock map, which is generated by a clock generation unit and provided to the circuit for controlling the backlight in the display system. The frame clock T F is displayed as the clock period required for each frame in the image signal. Synchronously and sequentially generate three clock signals in one clock cycle, the system will sequentially illuminate the light-emitting elements according to the respective clock signals, such as lighting the red light-emitting diodes at the red light clock T R , and at this time After being turned off; the green hair-emitting diode is lit in the green light clock T G and also turned off after time; the blue light-emitting diode is lit in the blue light clock T B and then turned off after time. Therefore, the display of each frame is matched with the illumination of the red (R), green (G) and blue (B) three-color light-emitting elements, and the color of each frame can be sufficiently displayed to increase the saturation.
圖7顯示為本發明循序顯色之立體顯示方法流程圖，此流程整理了上述控制本發明循序顯色之立體顯示系統中顯示裝置內各發光單元中不同發光元件的運作。運作應用了圖8所描述的立體顯示系統，立體顯示系統至少包括無設置彩色濾光片的立體影像顯示裝置80、立體影像處理單元809、顯示控制單元807、背光驅動模組803與訊號同步單元805。FIG. 7 is a flow chart showing a three-dimensional display method for sequential color development according to the present invention. The process aligns the operation of different light-emitting elements in each of the light-emitting units in the display device for controlling the sequential color rendering of the present invention. The stereoscopic display system described in FIG. 8 is applied, and the stereoscopic display system includes at least a stereoscopic image display device 80 without a color filter, a stereoscopic image processing unit 809, a display control unit 807, a backlight driving module 803, and a signal synchronization unit. 805.
系統中的立體影像處理單元809如一處理影像訊號與調整影像品質的顯示器控制晶片，接收由影像來源811所取得的影像訊號，並經立體訊號轉換後產生一立體影像訊號，其中影像來源可包括原本即為立體影像的訊號，立體影像處理單元809可以根據系統所支援的顯示格式進行轉換；或是影像來源為一般影像，立體影像處理單元809則可以透過立體訊號產生的技術將影像轉換為立體影像訊號。The stereoscopic image processing unit 809 of the system, for example, a display control chip for processing image signals and adjusting image quality, receiving image signals obtained by the image source 811, and converting the stereo signals to generate a stereoscopic image signal, wherein the image source may include the original That is, the stereo image signal, the stereo image processing unit 809 can be converted according to the display format supported by the system; or the image source is a general image, and the stereo image processing unit 809 can convert the image into a stereo image through the technique of stereo signal generation. Signal.
本發明所引用的立體影像的產生方式並不限於特定方法，舉例來說，相關技術如美國專利第5717415號所揭露利用左右眼影像水平方向的時間延遲(time difference)或是明視度延遲(luminance difference)的效果轉換2D影像為3D影像的技術，此例經立體影像轉換後，左右影像將結合形成顯示的畫面，每幀影像將同時包括左右影像。另有立體影像轉換的實施方式係將一個畫面分割為左右影像，並作一個位移(shift)，左右影像將透過一個延遲電路(delay circuit)循序顯示，並非同時顯示，因此在一個短時間內可以在人眼形成立體影像。另有實施例係將一個幀的影像分割為奇偶循序顯示的方式，也可以產生立體顯示的效果。The method for generating the stereoscopic image cited in the present invention is not limited to a specific method. For example, the related art discloses a time difference or a brightness delay in the horizontal direction of the left and right eye images as disclosed in US Pat. No. 5,718,415. The effect of the luminance difference is to convert the 2D image into a 3D image. In this case, after the stereo image is converted, the left and right images will combine to form a displayed image, and each frame of image will include both left and right images. In addition, the embodiment of stereoscopic image conversion divides a picture into left and right images and makes a shift. The left and right images are sequentially displayed through a delay circuit, which is not displayed at the same time, so it can be displayed in a short time. A stereoscopic image is formed in the human eye. In another embodiment, the image of one frame is divided into a sequential display mode, and the effect of stereoscopic display can also be generated.
循序顯色之立體顯示系統包括並無設置彩色濾光片的立體影像顯示裝置80，其中如上述圖2或圖3所揭示的立體影像顯示裝置80，其中主要元件為由多個發光單元(由第一發光元件、第二發光元件與第三發光元件所組成)組成的背光模組、光學膜、液晶面板與轉換影像為立體影像的立體膜。The stereoscopic display system of the sequential color development includes a stereoscopic image display device 80 in which no color filter is disposed, wherein the stereoscopic image display device 80 as disclosed in FIG. 2 or FIG. 3, wherein the main component is composed of a plurality of light emitting units (by A backlight module, an optical film, a liquid crystal panel, and a three-dimensional film in which the converted image is a stereoscopic image is composed of a first light-emitting element, a second light-emitting element, and a third light-emitting element.
循序顯色之立體顯示系統包括有電性連接立體影像顯示裝置80的顯示控制單元807，此顯示控制單元807同時與立體影像處理單元809電性連接，並接收立體影像訊號，顯示控制單元807接著產生控制立體影像顯示裝置80的控制訊號，主要是控制顯示裝置中液晶面板內液晶分子旋轉角度。The sequential display system includes a display control unit 807 electrically connected to the stereoscopic image display device 80. The display control unit 807 is electrically connected to the stereoscopic image processing unit 809 and receives the stereoscopic image signal, and the display control unit 807 continues. The control signal for controlling the stereoscopic image display device 80 is generated to mainly control the rotation angle of the liquid crystal molecules in the liquid crystal panel in the display device.
立體顯示系統有驅動背光的背光驅動模組803，背光驅動模組803電性連接有時脈訊號產生單元801，可以接收時脈訊號產生單元801所產生的時脈訊號，並根據此時脈訊號循序點亮背光模組內各發光單元中的發光元件，可參考圖6所示的時脈圖，依此循序點亮其中的紅色、綠色與藍色發光二極體。The stereoscopic display system has a backlight driving module 803 for driving the backlight. The backlight driving module 803 is electrically connected to the pulse signal generating unit 801, and can receive the clock signal generated by the clock signal generating unit 801, and according to the pulse signal at the time. The light-emitting elements in the light-emitting units in the backlight module are sequentially illuminated. Referring to the clock diagram shown in FIG. 6, the red, green and blue light-emitting diodes are sequentially illuminated accordingly.
立體顯示系統更包括有一訊號同步單元805，訊號同步單元805電性連接上述的背光驅動模組803與顯示控制單元807，主要透過電路方式同步化點亮各發光元件的發光時脈訊號與由立體影像處理單元809所處理的立體影像訊號。The stereoscopic display system further includes a signal synchronizing unit 805. The signal synchronizing unit 805 is electrically connected to the backlight driving module 803 and the display control unit 807, and simultaneously illuminates the illumination signal of each of the illuminating elements by means of a circuit. The stereoscopic image signal processed by the image processing unit 809.
應用上述立體顯示系統的立體顯示方法可參考圖7顯示的流程，此流程包括步驟S701所示由立體顯示系統接收顯示控制訊號，其中包括由立體影像處理單元接收之一影像訊號，並經立體影像處理單元轉換為立體影像訊號。For the stereoscopic display method of the above stereoscopic display system, reference may be made to the flow shown in FIG. 7. The process includes receiving, by the stereoscopic display system, a display control signal, which includes receiving, by the stereoscopic image processing unit, one of the image signals, and the stereoscopic image. The processing unit converts to a stereoscopic image signal.
背光驅動模組之後接收自時脈訊號產生單元提供的時脈訊號(步驟S703)，將在一個時脈週期內循序驅動背光光源(步驟S705)，特別是R、G、B三色的發光元件。The backlight driving module receives the clock signal provided by the clock signal generating unit (step S703), and sequentially drives the backlight source in a clock cycle (step S705), especially the R, G, and B color light-emitting elements. .
再如步驟S707，由顯示控制單元接收到立體影像訊號，產生控制立體影像顯示裝置內液晶分子的控制訊號，主要是控制立體影像顯示裝置中之一液晶面板內液晶分子旋轉角度的控制訊號。此時，透過訊號同步單元同步控制發光元件發光順序的發光時脈訊號與立體影像訊號(步驟 S709)，經同步化各訊號後，將透過立體影像顯示裝置產生立體影像(步驟S711)。In step S707, the display control unit receives the stereoscopic image signal, and generates a control signal for controlling the liquid crystal molecules in the stereoscopic image display device, which is mainly a control signal for controlling the rotation angle of the liquid crystal molecules in one of the liquid crystal panels in the stereoscopic image display device. At this time, the light-emitting clock signal and the stereoscopic image signal of the light-emitting sequence of the light-emitting elements are synchronously controlled by the signal synchronization unit (step S709), after synchronizing the signals, a stereoscopic image is generated by the stereoscopic image display device (step S711).
由於本案應用在立體影像顯示裝置上可以省略彩色濾光片的使用，因此可以降低立體顯示器的成本、增加液晶顯示屏的透光度，並因為利用控制各發光元件循序發光，因此能直接提高顯示解析度、增加立體度，以提升色彩飽和度。Since the application of the color filter can be omitted on the stereoscopic image display device, the cost of the stereoscopic display can be reduced, the transmittance of the liquid crystal display can be increased, and the display can be directly improved by controlling the illumination of each of the light-emitting elements. Resolution, increase stereo to improve color saturation.
綜上所述，本發明係為一種結合彩色發光的背光板，目的在於去除顯示面板內的彩色濾光片，達到利用現有的光罩製程，直接提高顯示解析度的方法，同時因為去除彩色濾光片，通過顯示面板的光通量得以增加，因此可以增加液晶顯示屏的亮度，或是減少發光元件(如LED)的使用數量。更者，由於使用R、G、B三原色之發光原理，因此在色彩飽和度可以比傳統冷陰極管或白光的發光方式更加飽和。In summary, the present invention is a backlight combined with color illumination, the purpose of which is to remove the color filter in the display panel, to achieve the method of directly improving the resolution of the display by using the existing mask process, and at the same time, because the color filter is removed. The light sheet, the luminous flux through the display panel is increased, so that the brightness of the liquid crystal display can be increased, or the number of light-emitting elements (such as LEDs) can be reduced. Moreover, since the principle of illumination of the three primary colors of R, G, and B is used, the color saturation can be more saturated than that of the conventional cold cathode tube or white light.
惟以上所述僅為本發明之較佳可行實施例，非因此即侷限本發明之專利範圍，故舉凡運用本發明說明書及圖示內容所為之等效結構變化，均同理包含於本發明之範圍內，合予陳明。However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent structural changes that are made by using the specification and the contents of the present invention are equally included in the present invention. Within the scope, it is combined with Chen Ming.
11．．．背光模組11. . . Backlight module
12．．．光學膜12. . . Optical film
13．．．第一偏光板13. . . First polarizer
14．．．液晶面板14. . . LCD panel
15．．．彩色濾光片15. . . Color filter
16．．．第二偏光板16. . . Second polarizer
21．．．直下式面板背光模組twenty one. . . Straight down panel backlight module
22．．．光學膜twenty two. . . Optical film
23．．．液晶面板twenty three. . . LCD panel
231．．．第一偏光板231. . . First polarizer
233．．．第二偏光板233. . . Second polarizer
232．．．液晶層232. . . Liquid crystal layer
24．．．立體膜twenty four. . . Three-dimensional film
25．．．觸控屏25. . . touch screen
31．．．反射片31. . . A reflective sheet
32．．．導光板32. . . Light guide
301．．．第一光源301. . . First light source
302．．．第二光源302. . . Second light source
33．．．光學膜33. . . Optical film
34．．．液晶面板34. . . LCD panel
341．．．第一偏光板341. . . First polarizer
343．．．第二偏光板343. . . Second polarizer
342．．．液晶層342. . . Liquid crystal layer
35．．．立體膜35. . . Three-dimensional film
36．．．觸控屏36. . . touch screen
TF ．．．幀時脈T F . . . Frame clock
TR ．．．紅光時脈T R . . . Red light pulse
TG ．．．綠光時脈T G . . . Green light pulse
TB ．．．藍光時脈T B . . . Blu-ray clock
80．．．立體影像顯示裝置80. . . Stereoscopic image display device
801．．．時脈訊號產生單元801. . . Clock signal generation unit
803．．．背光驅動模組803. . . Backlight driver module
805．．．訊號同步單元805. . . Signal synchronization unit
807．．．顯示控制單元807. . . Display control unit
809．．．立體影像處理單元809. . . Stereo image processing unit
811．．．影像來源811. . . Image source
步驟S701~S711 立體顯示方法流程Step S701~S711 Stereoscopic display method flow
圖1所示為習知技術顯示器模組之組合示意圖；圖2顯示為本發明循序顯色之立體顯示面板實施例示意圖之一；圖3顯示為本發明循序顯色之立體顯示面板實施例示意圖之二；1 is a schematic diagram of a combination of a conventional display module; FIG. 2 is a schematic diagram of an embodiment of a stereoscopic display panel for sequential color development of the present invention; FIG. 3 is a schematic view showing an embodiment of a stereoscopic display panel for sequential color development of the present invention; of two;
圖4A至圖4C顯示為用於本發明立體膜的柱狀鏡結構示意圖；4A to 4C are schematic views showing the structure of a columnar mirror used for the three-dimensional film of the present invention;
圖4D與圖4E為應用於本發明立體膜的實施例結構示意圖；4D and 4E are schematic structural views of an embodiment applied to the three-dimensional film of the present invention;
圖5A至圖5D顯示為本發明顯示面板所利用之三色發光二極體佈置實施例示意圖；5A to 5D are schematic diagrams showing an arrangement of a three-color light emitting diode used in the display panel of the present invention;
圖6所示為三色發光二極體循序發光之時脈示意圖；FIG. 6 is a schematic diagram showing the clock of the three-color light-emitting diode sequentially illuminating;
圖7顯示為本發明循序顯色之立體顯示方法流程圖；7 is a flow chart showing a stereoscopic display method for sequential color development of the present invention;
圖8所示為本發明循序顯色之立體顯示系統實施例示意圖。FIG. 8 is a schematic view showing an embodiment of a stereoscopic display system for sequential color development according to the present invention.
80‧‧‧立體影像顯示裝置80‧‧‧3D image display device
801‧‧‧時脈訊號產生單元801‧‧‧clock signal generation unit
803‧‧‧背光驅動模組803‧‧‧Backlight drive module
805‧‧‧訊號同步單元805‧‧‧Signal Synchronization Unit
807‧‧‧顯示控制單元807‧‧‧Display control unit
809‧‧‧立體影像處理單元809‧‧‧3D image processing unit
811‧‧‧影像來源811‧‧‧Image source
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| TW200914940A (en) * | 2007-07-31 | 2009-04-01 | Shinwha Intertek Corp | Optical sheet and backlight assembly and liquid crystal display having the same |
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| TW201133082A (en) * | 2010-03-18 | 2011-10-01 | Coretronic Corp | Backlight module, stereo display apparatus, and beam splitting film |
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| TW200809724A (en) * | 2006-08-04 | 2008-02-16 | Himax Display Inc | Controlling module and method for LED in color sequential LCOS display system |
| TW200914940A (en) * | 2007-07-31 | 2009-04-01 | Shinwha Intertek Corp | Optical sheet and backlight assembly and liquid crystal display having the same |
| US7750983B2 (en) * | 2007-10-04 | 2010-07-06 | 3M Innovative Properties Company | Stretched film for stereoscopic 3D display |
| TW201103003A (en) * | 2009-07-15 | 2011-01-16 | Chunghwa Picture Tubes Ltd | Color sequential liquid crystal display and method for displaying 3D image |
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