TW202340825A - Lcd device - Google Patents
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Abstract
Description
本發明提供一種液晶顯示器裝置,特別是有關於一種不需要彩色濾鏡的液晶顯示器。 The present invention provides a liquid crystal display device, particularly a liquid crystal display that does not require a color filter.
傳統的單色液晶顯示器包含一背光模組,其具有一單一波長或是白光光源,以及一液晶面板。在每一個像素中的液晶的旋扭控制背光提供的光源的灰階值,而液晶的旋扭是由位於液晶顯示面板的下基板上的薄膜電晶體控制,使得在每一個像素的光的強度可被液晶控制。 A traditional monochrome LCD display includes a backlight module with a single wavelength or white light source, and an LCD panel. The knob of the liquid crystal in each pixel controls the gray scale value of the light source provided by the backlight, and the knob of the liquid crystal is controlled by a thin film transistor located on the lower substrate of the liquid crystal display panel, so that the intensity of light in each pixel Can be controlled by LCD.
為了提供彩色液晶顯示器,每一個像素區分為三個子像素,並且提供彩色濾鏡對應到每一個子像素。請參閱第一圖為典型的液晶面板的結構,其中一傳統的液晶面板包含一上板10,一下板14,一位於上板10與下板14之間的液晶層20,一上偏極板18,一下偏極板16,以及一彩色濾鏡層18。一背光模組30提供了白光於液晶顯示面板,因此提供一液晶顯示器。
In order to provide a color liquid crystal display, each pixel is divided into three sub-pixels, and a color filter is provided corresponding to each sub-pixel. Please refer to the first figure for a typical structure of an LCD panel. A traditional LCD panel includes an
相比較於單色液晶顯示器,彩色液晶顯示器有非常低的背光使用率,因為紅綠藍彩色濾鏡會降低至少一半以上的液晶顯示器的亮度。再者,每一個像色包含了三個子像素,解析度也會跟著降低。 Compared with monochrome LCD displays, color LCD displays have very low backlight usage because red, green, and blue color filters will reduce the brightness of the LCD display by at least half. Furthermore, each image color contains three sub-pixels, and the resolution will also decrease accordingly.
一種由夏普提供新的科技,多原色顯示技術(Multi-Primary Color;MPC),是為了廣色域(Wide Color Gamut;WCG)而開發。除了紅綠藍等三原色,黃光濾光鏡也加入在液晶顯示器的一個像素裡。因此,背光的 使用率就更低。另一個技術更包含不只使用了黃光濾光鏡,為了廣色域還使用了洋紅色(magenta)與青色(cyan)彩色濾鏡。對於這樣的廣色域的技術,背光的使用率就更為低下,並且液晶顯示器的消耗功率就會大幅增加。 A new technology provided by Sharp, Multi-Primary Color (MPC), is developed for wide color gamut (Wide Color Gamut; WCG). In addition to the three primary colors of red, green and blue, a yellow light filter is also added to a pixel of the LCD display. Therefore, the backlight The usage rate is even lower. Another technology includes not only using yellow light filters, but also using magenta and cyan color filters for a wide color gamut. For such a wide color gamut technology, the usage rate of backlight is even lower, and the power consumption of the LCD display will increase significantly.
因此,需要一個發明用以解決上述的議題。 Therefore, an invention is needed to solve the above-mentioned issues.
本發明的主要目的是提供一種無彩色濾鏡的液晶顯示器。液晶顯示器包含一面板以及一個用以照明面板的背光模組。面板包還了一個具有複數個薄膜電晶體的下板,一個上板,以及一個液晶層位於上板與下板之間。面板區分為多數個區域(zones),並且每一個區域具有複數個像素。背光模組包含有複數個發光二極體組裝體用以照射複數個區域,並且每一個發光二極體組裝體包含了至少一個紅光發光二級體晶片、綠光發光二極體晶片、以及藍光發光二極體晶片。每一個區域顯示影像是藉由區域影像顯示法(zone image-display method),其包含了混色像素掃描法(mixed-color pixel scanning method)、單色像素掃描法(single-color pixel scanning method)、以及單色影像交錯法(single-color image interlace method)。區域影像顯示法利用了視覺暫留的優點,使得三原色可以在單一像素中呈現而不需要子像素。因此,不再需要將每一個像素分割成三個子像素。 The main purpose of the present invention is to provide a color filter-free liquid crystal display. An LCD display includes a panel and a backlight module for illuminating the panel. The panel also includes a lower plate with a plurality of thin film transistors, an upper plate, and a liquid crystal layer located between the upper plate and the lower plate. The panel is divided into a plurality of areas (zones), and each area has a plurality of pixels. The backlight module includes a plurality of light-emitting diode assemblies for illuminating multiple areas, and each light-emitting diode assembly includes at least one red light-emitting diode chip, a green light-emitting diode chip, and Blue light emitting diode chip. Each zone displays an image through a zone image-display method, which includes a mixed-color pixel scanning method, a single-color pixel scanning method, And the single-color image interlace method. The area image display method takes advantage of the persistence of vision so that the three primary colors can be presented in a single pixel without the need for sub-pixels. Therefore, it is no longer necessary to divide each pixel into three sub-pixels.
本發明的一個目的是提供一種省電,背光使用率高,薄膜電晶體(TFT)開關頻率低,解析度高,不需要擴散片(diffuser film)。因為發光二極體(LED)組裝體表面膠才可以粗化,具有自然的調光(nature dimming)功能。在本發明中,提供無彩色濾鏡的液晶顯示器,其具有較高的亮度、較佳的色彩飽和、以及較低的背光功耗。 An object of the present invention is to provide a device that saves power, has high backlight utilization rate, low thin film transistor (TFT) switching frequency, high resolution, and does not require a diffuser film. Because the surface glue of the light-emitting diode (LED) assembly can be roughened, it has a natural dimming function. In the present invention, a color filter-free liquid crystal display is provided, which has higher brightness, better color saturation, and lower backlight power consumption.
本發明的另一目的是提供一種可達到微發光二極體(microLED)顯示器解析度的液晶顯示器(LCD),並且只需使用目前成熟的薄 膜電晶體液晶顯示器(TFT LCD)的製程即可達成。因為傳統技術中的三個子像素才可以提供一個彩色像素,在本發明中每一個子像素即可提供彩色像素。 Another object of the present invention is to provide a liquid crystal display (LCD) that can achieve the resolution of a microlight emitting diode (microLED) display, and only needs to use currently mature thin This can be achieved using a thin film transistor liquid crystal display (TFT LCD) process. Because only three sub-pixels in the conventional technology can provide one color pixel, in the present invention each sub-pixel can provide a color pixel.
據此,本發明提供一種液晶顯示器元件,其包含一液晶顯示器面板,具有一下板、一上板以及一液晶層位於該上板與該下板之間,該上板具有複數個薄膜電晶體於其上,該下板具有一透明電極於其上,其中一呈現在該液晶顯示面板之一影像分割為複數個區域;以及一背光模組用以提供光予該液晶顯示面板,其中該背光模組之至少一固態發光組裝照射該複數個區域中的一個區域,且包含至少一個紅光、綠光、以及藍光發光二極體晶片,其中該液晶顯示器面板顯示之該影像為區域影像顯示法。 Accordingly, the present invention provides a liquid crystal display element, which includes a liquid crystal display panel having a lower plate, an upper plate and a liquid crystal layer located between the upper plate and the lower plate. The upper plate has a plurality of thin film transistors. On it, the lower plate has a transparent electrode on it, in which an image displayed on the liquid crystal display panel is divided into a plurality of areas; and a backlight module is used to provide light to the liquid crystal display panel, wherein the backlight module At least one solid-state light-emitting assembly of the group illuminates one area of the plurality of areas and includes at least one red, green, and blue light-emitting diode chip, wherein the image displayed by the liquid crystal display panel is an area image display method.
根據本發明之一實施例之液晶顯示器元件,上述之區域影像顯示法包含混色像素掃描法、單色像素掃描法以及單色區域影像交疊法。 According to the liquid crystal display device according to an embodiment of the present invention, the above-mentioned area image display method includes a mixed color pixel scanning method, a single color pixel scanning method, and a single color area image overlapping method.
根據本發明之一實施例之液晶顯示器元件,上述之混色像素掃描法包含之步驟為決定在該區域中每一像素之紅色、綠色以及藍色的強度;以及於該區域中依序完整開啟該每一像素,同時該固態照明組裝在視覺暫留的時間依序同步發射該決定之紅色、綠色以及藍色的強度。 According to the liquid crystal display element according to an embodiment of the present invention, the above-mentioned mixed color pixel scanning method includes the steps of determining the intensity of red, green and blue of each pixel in the area; and sequentially and completely turning on the red, green and blue in the area. For each pixel, the solid-state lighting assembly simultaneously emits the determined red, green, and blue intensities sequentially and simultaneously during the duration of vision.
根據本發明之一實施例之液晶顯示器元件,上述之固態照明組裝提供超過8位元之灰階值。 According to a liquid crystal display device according to an embodiment of the present invention, the above-mentioned solid-state lighting assembly provides grayscale values exceeding 8 bits.
根據本發明之一實施例之液晶顯示器元件,上述之固態照明組裝係由脈波寬度調變驅動法所驅動。 According to a liquid crystal display device according to an embodiment of the present invention, the solid-state lighting assembly is driven by a pulse width modulation driving method.
根據本發明之一實施例之液晶顯示器元件,上述之單色像素掃描法包含之步驟為決定在該區域中每一像素之紅色、綠色以及藍色的強度;以及於該區域中依照紅色/綠色/藍色順序在像素掃描順序中完整開啟該每一像素,同時該固態照明組裝在視覺暫留的時間在像素掃描順序中依序 同步發射該決定之紅色、綠色以及藍色的強度。 According to the liquid crystal display device according to an embodiment of the present invention, the above-mentioned single-color pixel scanning method includes the steps of determining the intensity of red, green and blue for each pixel in the area; and according to the red/green color in the area. /The blue sequence completely turns on each pixel in the pixel scanning sequence, and at the same time, the solid-state lighting assembly sequentially in the pixel scanning sequence during the visual persistence time Simultaneously emit the determined red, green, and blue intensities.
根據本發明之一實施例之液晶顯示器元件,上述之單色區域影像交疊法包含之步驟為決定在該區域中每一像素之紅色、綠色以及藍色的強度;以及依據該決定之灰階值,藉由該複數個薄膜電晶體依據該紅色、綠色以及藍色的強度,在該紅色/綠色/藍色順序中開啟所有像素,同時該固態發光組裝在視覺暫留時間內以該紅色/綠色/藍色順序同步發射完整的強度。 According to the liquid crystal display element according to an embodiment of the present invention, the above-mentioned single-color area image overlapping method includes the steps of determining the intensity of red, green and blue of each pixel in the area; and grayscale based on the determination. value, the plurality of thin film transistors turn on all pixels in the red/green/blue sequence according to the intensity of the red, green and blue, and at the same time, the solid-state light-emitting assembly uses the red/green within the visual persistence time. The Green/Blue sequence simultaneously emits full intensity.
根據本發明之一實施例之液晶顯示器元件,一偏極片適用於該區域且位於該下板。 According to an embodiment of the liquid crystal display device of the present invention, a polarizer is applied to the area and is located on the lower plate.
根據本發明之一實施例之液晶顯示器元件,上述之固態發光組裝之一透明樹脂包含粗化表面。 According to a liquid crystal display device according to an embodiment of the present invention, a transparent resin of the solid-state light-emitting assembly includes a roughened surface.
根據本發明之一實施例之液晶顯示器元件,上述之紅色、綠色以及藍色固態發光晶片為微發光二極體晶片。 According to a liquid crystal display element according to an embodiment of the present invention, the above-mentioned red, green and blue solid-state light-emitting chips are micro-light-emitting diode chips.
根據本發明之一實施例之液晶顯示器元件,上述之紅色、綠色以及藍色固態發光晶片以覆晶接合至該組裝。 According to a liquid crystal display device according to an embodiment of the present invention, the above-mentioned red, green and blue solid-state light-emitting chips are flip-chip bonded to the assembly.
根據本發明之一實施例之液晶顯示器元件,上述之固態發光組裝包含擴散子於該透明樹脂中以模糊(smear out)固態發光組裝中光的位置因素。 According to a liquid crystal display device according to an embodiment of the present invention, the above-mentioned solid-state light-emitting assembly includes diffusers in the transparent resin to smear out the positional factors of light in the solid-state light-emitting assembly.
根據本發明之一實施例之液晶顯示器元件,上述之固態發光組裝包含一白色發光二極體晶片、一黃色發光二極體晶片、一青綠光發光二極體晶片、一洋紅色發光二極體晶片以及一青色發光二極體晶片。 According to a liquid crystal display element according to an embodiment of the present invention, the above-mentioned solid-state light-emitting assembly includes a white light-emitting diode chip, a yellow light-emitting diode chip, a cyan light-emitting diode chip, and a magenta light-emitting diode. chip and a cyan light-emitting diode chip.
根據本發明之一實施例之液晶顯示器元件,上述之液晶包含扭曲向列/超級扭曲向列/橫向電場效應顯示技術/多域垂直排列。 According to a liquid crystal display device according to an embodiment of the present invention, the liquid crystal includes twisted nematic/super twisted nematic/lateral electric field effect display technology/multi-domain vertical alignment.
本發明提供一種用以顯示一影像的方法,包含提供一液晶顯 示器,決定在該區域中每一像素之紅色、綠色以及藍色的強度;以及於該區域中依序完整開啟該每一像素,同時該固態照明組裝在視覺暫留的時間依序同步發射該決定之紅色、綠色以及藍色的強度。液晶顯示器包含一下板、一上板以及一液晶層位於該上板與該下板之間,該上板具有複數個薄膜電晶體於其上,該下板具有一透明電極於其上,其中一呈現在該液晶顯示面板之該影像分割為複數個區域;以及一背光模組用以提供光予該液晶顯示面板,其中該背光模組之至少一固態發光組裝照射該複數個區域中的一個區域,且包含至少一個紅光、綠光、以及藍光發光二極體晶片。 The present invention provides a method for displaying an image, including providing a liquid crystal display The monitor determines the intensity of red, green, and blue for each pixel in the area; and sequentially and completely turns on each pixel in the area, and at the same time, the solid-state lighting assembly emits sequentially and synchronously during the visual persistence time. This determines the intensity of red, green, and blue. The liquid crystal display includes a lower plate, an upper plate and a liquid crystal layer located between the upper plate and the lower plate. The upper plate has a plurality of thin film transistors on it. The lower plate has a transparent electrode on it, one of which The image presented on the liquid crystal display panel is divided into a plurality of areas; and a backlight module is used to provide light to the liquid crystal display panel, wherein at least one solid-state light emitting assembly of the backlight module illuminates one area of the plurality of areas. , and includes at least one red, green, and blue light-emitting diode chip.
根據本發明之一實施例之方法,上述之固態照明組裝提供超過8位元之灰階值。 According to a method of an embodiment of the present invention, the above-mentioned solid-state lighting assembly provides grayscale values exceeding 8 bits.
根據本發明之一實施例之方法,上述之固態照明組裝係由脈波寬度調變驅動法所驅動。 According to a method of an embodiment of the present invention, the solid-state lighting assembly is driven by a pulse width modulation driving method.
根據本發明之一實施例之方法,上述之固態照明組裝包含擴散子於該透明樹脂中以模糊(smear out)固態發光組裝中光的位置因素。 According to a method of an embodiment of the present invention, the solid-state lighting assembly includes a diffuser in the transparent resin to smear out the positional factors of light in the solid-state lighting assembly.
本發明提供一種用以顯示一影像的方法,包含提供一液晶顯示器;決定在該區域中每一像素之紅色、綠色以及藍色的強度;以及依據該決定之灰階值,藉由該複數個薄膜電晶體依據該紅色、綠色以及藍色的強度,在該紅色/綠色/藍色順序中開啟所有像素,同時該固態發光組裝在視覺暫留時間內以該紅色/綠色/藍色順序同步發射完整的強度。液晶顯示器包含一下板、一上板以及一液晶層位於該上板與該下板之間,該上板具有複數個薄膜電晶體於其上,該下板具有一透明電極於其上,其中一呈現在該液晶顯示面板之該影像分割為複數個區域;一背光模組用以提供光予該液晶顯示面板,其中該背光模組之至少一固態發光組裝照射該複數個區域中的一個區域,且包含至少一個紅光、綠光、以及藍光發光二極體晶片。 The present invention provides a method for displaying an image, including providing a liquid crystal display; determining the intensity of red, green and blue for each pixel in the area; and based on the determined grayscale value, through the plurality of The thin film transistor turns on all pixels in the red/green/blue sequence according to the intensity of the red, green and blue colors, and the solid-state light-emitting assembly simultaneously emits in the red/green/blue sequence within the visual persistence time. Full intensity. The liquid crystal display includes a lower plate, an upper plate and a liquid crystal layer located between the upper plate and the lower plate. The upper plate has a plurality of thin film transistors on it. The lower plate has a transparent electrode on it, one of which The image presented on the liquid crystal display panel is divided into a plurality of areas; a backlight module is used to provide light to the liquid crystal display panel, wherein at least one solid-state light emitting assembly of the backlight module illuminates one area of the plurality of areas, and includes at least one red, green, and blue light-emitting diode chip.
根據本發明之一實施例之方法,上述之固態照明組裝包含擴散子於該透明樹脂中以模糊(smear out)固態發光組裝中光的位置因素。 According to a method of an embodiment of the present invention, the solid-state lighting assembly includes a diffuser in the transparent resin to smear out the positional factors of light in the solid-state lighting assembly.
【00109】10:上板upper plate 【00109】10:upper plate
【00110】12:上偏極板upper polarizer 【00110】12: Upper polarizer upper polarizer
【00111】14:下板lower plate 【00111】14:lower plate
【00112】16:下偏極板lower polarizer 【00112】16: lower polarizer
【00113】18:彩色濾鏡color filter 【00113】18: color filter color filter
【00114】20:液晶liquid crystal 【00114】20: liquid crystal liquid crystal
【00115】30:背光模組backlight module 【00115】30: backlight module backlight module
【00116】100:封裝packager 【00116】100: Package packager
【00117】102:紅光發光二極體R LED 【00117】102: Red light emitting diode R LED
【00118】104:綠光發光二極體G LED 【00118】104: Green light emitting diode G LED
【00119】106:藍光發光二極體B LED 【00119】106: Blue light emitting diode B LED
【00120】108:白光發光二極體W LED 【00120】108: White light emitting diode W LED
【00121】110:環氧樹脂epoxy 【00121】110: epoxy resin
【00122】112:擴散子diffusor 【00122】112: diffuser
第一圖是傳統的液晶顯示器的側視結構示意圖。 The first picture is a schematic side view of a traditional LCD display.
第二A圖是根據本發明的一個實施例中液晶顯示器的一個區域的背光模組之俯視結構示意圖。 The second figure A is a schematic top view of the backlight module of a region of the liquid crystal display according to an embodiment of the present invention.
第二B圖是根據本發明的另一個實施例中液晶顯示器的一個區域的背光模組之俯視結構示意圖。 Figure 2B is a schematic top view of the backlight module of a region of the liquid crystal display according to another embodiment of the present invention.
第三A圖是根據本發明的一個實施例中液晶顯示器的一個區域的發光二極體封裝體背光模組之側視結構示意圖。 Figure 3A is a schematic side structural view of a light-emitting diode package backlight module in a region of a liquid crystal display according to an embodiment of the present invention.
第三B圖是根據本發明的另一個實施例中液晶顯示器的一個區域的發光二極體組裝體背光模組之側視結構示意圖。 Figure 3B is a schematic side structural view of a light-emitting diode assembly backlight module in a region of a liquid crystal display according to another embodiment of the present invention.
第三C圖是根據本發明的另一個實施例中液晶顯示器的一個區域的發光二極體組裝體背光模組之側視結構示意圖。 Figure 3C is a schematic side structural view of a light-emitting diode assembly backlight module in a region of a liquid crystal display according to another embodiment of the present invention.
第四圖是根據本發明的一個實施例中包含一薄膜電晶體以及液晶電容的一個像素的電路示意圖。 The fourth figure is a schematic circuit diagram of a pixel including a thin film transistor and a liquid crystal capacitor according to an embodiment of the present invention.
第五A圖是根據本發明的一個實施例中在液晶顯示面板上的一個區域之俯視結構示意圖。 Figure 5A is a schematic top view of a region on a liquid crystal display panel according to an embodiment of the present invention.
第五B圖是根據本發明的一個實施例中一個發光二極體封裝體照射於液晶顯示面板的一個區域之俯視結構示意圖。 Figure 5B is a schematic structural diagram of a top view of an area of a liquid crystal display panel illuminated by a light-emitting diode package according to an embodiment of the present invention.
第六A圖是根據本發明的一個實施例中在區域中所有的像素的位置之俯視示意圖。 Figure 6A is a top view schematic diagram of the positions of all pixels in the area according to an embodiment of the present invention.
第六B圖是根據本發明的一個實施例中在區域中所有的像素的每一個灰階值之俯視示意圖。 Figure 6B is a schematic top view of each grayscale value of all pixels in the area according to an embodiment of the present invention.
第七A圖到第七C圖是根據本發明的一個實施例中提供一個區域中所有像素的灰階值在不同的階段的運作之俯視示意圖。 Figures 7A to 7C are top-view schematic diagrams of the operation of providing grayscale values of all pixels in an area at different stages according to an embodiment of the present invention.
第八圖是根據本發明的一個實施例中在區域中所有的像素的每一個灰階值在視覺暫留的時間內的運作之俯視示意圖。 The eighth figure is a top view schematic diagram of the operation of each grayscale value of all pixels in the area within the visual persistence time according to an embodiment of the present invention.
第九A圖到第九C圖是根據本發明的另一個實施例中提供一個區域中所有像素的灰階值在不同的階段的運作之俯視示意圖。 Figures 9A to 9C are top-view schematic diagrams of the operation of providing grayscale values of all pixels in an area at different stages according to another embodiment of the present invention.
第十圖是根據本發明的一個實施例中在區域中所有的像素的每一個灰階值在視覺暫留的時間內的運作之俯視示意圖。 Figure 10 is a top view schematic diagram of the operation of each grayscale value of all pixels in the area within the visual persistence time according to an embodiment of the present invention.
第十一A圖到第十一C圖是根據本發明的另一個實施例中提供一個區域中所有像素的灰階值在不同的階段的運作之俯視示意圖。 Figures 11A to 11C are top-view schematic diagrams of the operation of providing grayscale values of all pixels in an area at different stages according to another embodiment of the present invention.
第十二圖是根據本發明的一個實施例中在區域中所有的像素的每一個灰階值在視覺暫留的時間內的運作之俯視示意圖。 Figure 12 is a top view schematic diagram of the operation of each grayscale value of all pixels in the area within the visual persistence time according to an embodiment of the present invention.
第十三圖是根據本發明的一個實施例中液晶顯示器的側視結構示意圖。 Figure 13 is a schematic side structural view of a liquid crystal display according to an embodiment of the present invention.
第十四圖是根據本發明的另一個實施例中液晶顯示器的側視結構示意圖。 Figure 14 is a schematic side structural view of a liquid crystal display according to another embodiment of the present invention.
據此,當本發明幾個範例的實施例可能會有不同的修正或是可替換的類型,這些實施例在繪圖中顯示,並且之後詳細的描述。然而,理當理解的,本發明的實施例並未意圖限縮於所揭露的特定的型式,而反過來的,發明的範例實施例是用來涵蓋本發明的範圍當中可供可能的修改,等同,以及可替代之。 Accordingly, while several exemplary embodiments of the invention may be subject to various modifications and alternative types, these embodiments are shown in the drawings and are described in detail below. It should be understood, however, that the embodiments of the invention are not intended to be limited to the specific forms disclosed, but rather, the exemplary embodiments of the invention are intended to cover possible modifications within the scope of the invention. , and can replace it.
之後的敘述解說了本發明當中的字詞的意涵,用以讓本發明的實施例更為清楚。 The following description explains the meanings of the words in the present invention to make the embodiments of the present invention clearer.
在本發明中,固態發光元件可包含半導體發光元件,例如發光二極體。 In the present invention, the solid-state light-emitting element may include a semiconductor light-emitting element, such as a light-emitting diode.
在本發明中,發光二極體是指發光二極體晶片,也就是還未封裝的發光二極體晶片。 In the present invention, light-emitting diode refers to a light-emitting diode chip, that is, a light-emitting diode chip that has not yet been packaged.
在本發明中,發光二極體組裝體或是發光二極體封裝體是指發光二極體晶片在殼體內封裝或是基板上組裝。 In the present invention, a light-emitting diode assembly or a light-emitting diode package means that a light-emitting diode chip is packaged in a casing or assembled on a substrate.
在本發明中,彩色濾鏡是指在液晶顯示面板中,最外一層用以將白光分別過濾成紅光、綠光、以及藍光。 In the present invention, the color filter refers to the outermost layer in the liquid crystal display panel used to filter white light into red light, green light, and blue light respectively.
在本發明中,區域顯示方法是指影像的顯示是在一個區域裡面可以獨立產生影像。因此,每一個區域會有自己的一個驅動元件去控制本發明的液晶顯示裝置中,區域裡的背光元件與區域裡的液晶顯示器的所有像素。 In the present invention, the regional display method refers to the display of images that can independently generate images in a region. Therefore, each area has its own driving element to control the backlight element in the area and all the pixels of the liquid crystal display in the liquid crystal display device of the present invention.
在本發明中,擴散子(diffusor)是指混在發光二極體封裝體裡面的粒子,用以將發光二極體晶片產生的光線均勻的發射出去。 In the present invention, the diffuser refers to the particles mixed in the light-emitting diode package to emit the light generated by the light-emitting diode chip uniformly.
在本發明中,擴散片(diffuser film)是指用在液晶顯示面板中提升背光亮度的薄膜。 In the present invention, a diffuser film refers to a film used in a liquid crystal display panel to enhance backlight brightness.
在本發明中,晶片表面粗化是指將發光二極體的晶片表面從平滑的表面轉成不規則的結構,讓光在發光二極體晶片裡面更容易透出來而不會因為全反射而限縮在發光二極體裡面。同時,透過表面粗化,發光二極體晶片的發光角度也可以大幅增加。 In the present invention, wafer surface roughening refers to converting the light-emitting diode wafer surface from a smooth surface into an irregular structure, so that light can more easily transmit inside the light-emitting diode wafer without being lost due to total reflection. Confined inside the light-emitting diode. At the same time, through surface roughening, the light-emitting angle of the light-emitting diode chip can also be greatly increased.
在本發明中,膠材表面粗化是指在發光二極體封裝體裡或是發光二極體組裝體上的透明膠材的粗化表面。膠材可以是環氧樹脂或是矽氧烷。 In the present invention, the roughened surface of the adhesive material refers to the roughened surface of the transparent adhesive material in the light-emitting diode package or on the light-emitting diode assembly. The adhesive material can be epoxy resin or silicone.
在本發明中,灰階是指單色光的不同強度。 In the present invention, gray scale refers to different intensities of monochromatic light.
在本發明中,亮度是指混光之後的不同的強度。 In the present invention, brightness refers to different intensities after light mixing.
在本發明中,發光強度是指輸出的光的功率。 In the present invention, luminous intensity refers to the power of output light.
在圖示中,每個元件以及每個元件之間相對應的尺寸有可能為了清楚起見而被誇大。接在圖示的敘述相同或是類似的參照數字表示相同或是類似的元件或組成,並且只有描述對應到獨立不同的實施例。 In the illustrations, the dimensions of each element and the corresponding dimensions between each element may be exaggerated for clarity. The same or similar reference numerals that follow the description of the figures represent the same or similar elements or components, and only the descriptions correspond to independently different embodiments.
本發明提供一種不具有彩色濾鏡的彩色液晶顯示器。所有的色彩由背光直接提供而不需要彩色濾鏡的過濾。液晶在本發明中可以扮演一個像素的完全開啟與關閉,或是在一個像素中灰階值的控制。 The present invention provides a color liquid crystal display without a color filter. All colors are provided directly by the backlight without the need for color filters. In the present invention, the liquid crystal can play the role of completely turning on and off a pixel, or controlling the grayscale value in a pixel.
在本發明中的背光模組,主要使用固態發光照明作為背光源。目前的固態發光照明元件主要為半導體照明元件,而常見的商用的半導體照明主要是發光二極體。在本發明中較佳的例子使用毫發光二極體(mini LED),並且透過發光二極體的色彩直接呈現出顯示器的色彩。在本發明中的毫發光二極體的封裝尺寸的邊長在1毫米以下。相較於傳統的彩色液晶顯示器,色彩是由彩色濾鏡來決定。但是彩色濾鏡的製程相當的複雜也並非相當的穩定,因此即使是相同一家製造商的相同一個商品的彩色液晶顯示器,其色彩均有些微的差異。這個可以在許多的電子產品的大賣場當中就可以直接看出。在本發明中,由於發光二極體的色彩的波長直接顯示影像,是在發光二極體的磊晶製程就決定好,並且可以透過點測(probe)與蒐排(sorting)的方式挑選特定波長的發光二極體。因此顯示器的色彩與亮度的表現的均勻度可以完全的規格化。也就是可以讓任兩台的液晶顯示器所呈現的色彩是完全一樣的。 In the backlight module of the present invention, solid-state luminescent lighting is mainly used as the backlight source. Current solid-state light-emitting lighting components are mainly semiconductor lighting components, and common commercial semiconductor lighting is mainly light-emitting diodes. In a preferred example of the present invention, mini LEDs are used, and the colors of the display are directly displayed through the colors of the LEDs. The package size of the millimeter light-emitting diode in the present invention has a side length of less than 1 mm. Compared with traditional color LCD monitors, colors are determined by color filters. However, the manufacturing process of color filters is quite complicated and not very stable. Therefore, even the color LCD monitors of the same product from the same manufacturer have slight differences in color. This can be directly seen in many electronic product hypermarkets. In the present invention, since the wavelength of the color of the light-emitting diode directly displays the image, it is determined during the epitaxial process of the light-emitting diode, and a specific color can be selected through probing and sorting. wavelength of light-emitting diodes. Therefore, the uniformity of the display's color and brightness performance can be completely standardized. That is to say, the colors displayed by any two LCD monitors are exactly the same.
另外,彩色是由發光二極體來展現,色彩空間(CIE;Commission internationale de l'éclairage)與演色性(CRI;Color Rendering Index)的表現可以較目前的彩色液晶顯示器還要好。傳統的彩色液晶顯示 器,其中的背光源所提供的白光,不管是由冷陰極射線管(CCFL)或是白光LED發光二極體,最後還是由彩色濾鏡來決定色彩。因此,彩色濾鏡決定色彩空間或是演色性。然而,不管使用發光二極體的背光的技術在怎樣演進,即使使用量子點的技術增加可見光的背光頻譜,最後彩色濾鏡還是會把背光所能提供的色彩空間給降低。因此目前才會有多原色顯示技術,這類增加黃光濾光鏡的技術出現。然而,這類增加色彩空間或是演色性的方式,是用降低背光的使用效率來換取的。在本發明中,直接使用紅光,綠光與藍光發光二極體來產生色彩與亮度,是直接對應到人眼對於三原色的色彩識別。不但是背光的使用效率因不使用彩色濾鏡而揚升,更可以透過對人眼的色彩識別提供直接的三原色的色彩識別,背光效率會好於傳統的使用彩色濾鏡的液晶顯示器,並且色彩的展現會更鮮豔與穩定。 In addition, colors are displayed by light-emitting diodes, and the performance of color space (CIE; Commission internationale de l'éclairage) and color rendering (CRI; Color Rendering Index) can be better than that of current color LCD monitors. Traditional color LCD display In the device, the white light provided by the backlight, whether it is a cold cathode ray tube (CCFL) or a white LED light-emitting diode, is ultimately determined by a color filter. Therefore, color filters determine the color space or color rendering. However, no matter how the backlight technology using light-emitting diodes evolves, even if quantum dot technology is used to increase the backlight spectrum of visible light, the color filter will eventually reduce the color space that the backlight can provide. Therefore, multi-primary color display technology is currently available, and this type of technology that adds yellow light filters appears. However, this method of increasing color space or color rendering comes at the cost of reducing backlight efficiency. In the present invention, red light, green light and blue light-emitting diodes are directly used to generate color and brightness, which directly corresponds to the human eye's color recognition of the three primary colors. Not only does the backlight usage efficiency increase by not using color filters, but it can also provide direct color recognition of the three primary colors through the color recognition of the human eye. The backlight efficiency will be better than traditional LCD displays that use color filters, and the color The display will be more vivid and stable.
在本發明中,在液晶顯示器中定義了一個區域(zone)是由一個發光二極體封裝體的尺寸及共照射範圍(角度)所決定,其中每一個區域可以對應到多數個像素,而一個液晶顯示器是由多數個區域所組成。舉例來說,一個區域可能可以有3x3個像素,也可以有8X6個像素,或是其他的尺寸。一個區域所涵蓋的像素,主要取決於發光二極體的封裝尺寸與厚度所決定。而每一個發光二極體封裝體裡面至少會有一個紅光,一個綠光與一個藍光發光二極體晶片。 In the present invention, a zone (zone) is defined in the liquid crystal display, which is determined by the size and common illumination range (angle) of a light-emitting diode package. Each zone can correspond to a plurality of pixels, and a The LCD display is composed of multiple areas. For example, an area may have 3x3 pixels, 8x6 pixels, or other sizes. The pixels covered by an area are mainly determined by the package size and thickness of the light-emitting diode. Each light-emitting diode package contains at least one red light, one green light and one blue light-emitting diode chip.
在本發明中,影像的顯示主要是透過人眼視覺暫留的區域影像顯示法(zone image display method)所呈現,在本發明中提供了兩個方式可以呈現影像。其中一個,是透過對區域中在人眼的視覺暫留時間裡對每個像素依序的完全開啟,並且同時背光依照像素的序列提供對應像素的對應的色彩混色及亮度,達到影像輸出的目的。由於傳統的液晶在灰階值的旋扭反應,比起全開與全關的反應還要慢,因此在本發明中,藉由液晶的全 開與全關可以讓顯示器的影片播放可以更加流暢。另外,控制色彩的灰階值是由發光二極體決定的,透過脈波寬度調變(PWM;Pulse Width Modulation)的方式驅動發光二極體,灰階值可以輕易地超越傳統的液晶顯示器的8位元的灰階值。這樣可以讓液晶顯示器可以提供與傳統的陰極射線管(CRT;Cathode Tube Ray)顯示器相同的高灰階值,讓影像的展現比起現有的液晶顯示器有更高的色彩豐富度。 In the present invention, the display of the image is mainly presented through the zone image display method (zone image display method) of the persistence of human vision. The present invention provides two ways to present the image. One of them is to achieve the purpose of image output by fully opening each pixel in the area sequentially within the visual persistence time of the human eye, and at the same time, the backlight provides the corresponding color mixing and brightness of the corresponding pixel according to the sequence of pixels. . Since the twisting response of the traditional liquid crystal in the gray scale value is slower than the response of fully open and fully closed, in the present invention, through the full rotation of the liquid crystal, Turning it on or off can make the video playback on the monitor smoother. In addition, the grayscale value for controlling color is determined by the light-emitting diode. By driving the light-emitting diode through pulse width modulation (PWM; Pulse Width Modulation), the grayscale value can easily exceed that of a traditional liquid crystal display. 8-bit grayscale value. This allows the LCD display to provide the same high grayscale value as a traditional cathode ray tube (CRT; Cathode Tube Ray) display, allowing images to be displayed with higher color richness than existing LCD displays.
在本發明之一實施例中,一個區域(zone)是由一個發光二極體背光組裝所照明。然而,一個區域可以被二或是多個背光組件所照明,如果區域的影像可以視覺暫留(vision persistence)的時間範圍(time frame)之內顯示出。 In one embodiment of the invention, a zone is illuminated by an LED backlight assembly. However, an area can be illuminated by two or more backlight components if the image of the area can be displayed within the time frame of vision persistence.
另外一類的顯示方式,是整個區域(zone)中背光一次只有提供單一色彩,例如紅光。同時,液晶面板控制區域中每一個像素的灰階值。在人眼的視覺暫留的時間裡,依序把三原色的背光依序呈現,讓人眼產生整張影像。這種方式,雖然每個色彩的灰階值會跟傳統的液晶顯示器一樣,只有8位元,但是在人眼暫留的時間裡整個區域中的液晶只需要三次的開啟,對於驅動影像來說會比較簡單。另外,這個方式對於一個區域擁有較多個像素來說,會是比較容易呈現影像的。相較於前一個方式,當一個區域擁有過多的像素時,要在人眼的視覺暫留的時間內依序完全開啟與關閉每一個像素是一個挑戰。再者,如果要增加其他的顏色,例如黃色,只會在整個區域中增加所有像素對液晶的控制。 Another type of display method is that the backlight in the entire zone only provides a single color at a time, such as red light. At the same time, the LCD panel controls the grayscale value of each pixel in the area. During the duration of the human eye's vision, the backlight of the three primary colors is presented sequentially, allowing the human eye to produce the entire image. In this way, although the grayscale value of each color will be the same as that of a traditional LCD display, only 8 bits, the LCD in the entire area only needs to be turned on three times during the time the human eye stays. For driving images It will be simpler. In addition, this method will make it easier to present images if an area has more pixels. Compared with the previous method, when an area has too many pixels, it is a challenge to completely turn on and off each pixel sequentially within the persistence time of human vision. Furthermore, if you want to add other colors, such as yellow, it will only increase the control of the liquid crystal by all pixels in the entire area.
以上的影像驅動方式皆利用了發光二極體的快速發光的特性。因此,搭配液晶的開關是完全沒有問題的。而液晶可以使用傳統的任何一種液晶,例如扭曲向列(TN;Twisted Nematic)液晶、超級扭曲向列(STN;Super Twisted Nematic)、垂直排列(VA;Vertical Alignment)、多域垂 直排列(MVA;Multi-domain Vertical Alignment)、橫向電場效應顯示技術(IPS;In-Plane Switching)、或是其他任何應用液晶呈現影像的皆可。 The above image driving methods all take advantage of the rapid emission characteristics of light-emitting diodes. Therefore, there is no problem at all with LCD switches. The liquid crystal can use any traditional liquid crystal, such as twisted nematic (TN; Twisted Nematic) liquid crystal, super twisted nematic (STN; Super Twisted Nematic), vertical alignment (VA; Vertical Alignment), multi-domain vertical MVA (Multi-domain Vertical Alignment), lateral electric field effect display technology (IPS; In-Plane Switching), or any other application of liquid crystal to display images can be used.
在本發明中,與傳統的技藝相同,液晶層是位於下板與上板之間。另外,還會包含偏極化板,配向膜等其他在傳統的液晶顯示器會使用的材料與元件,除了彩色濾鏡以外。為了不讓本發明產生一些混淆,其他在傳統液晶顯示面板相關的元件就不說明以及圖示中並不顯示。 In the present invention, like the traditional technique, the liquid crystal layer is located between the lower plate and the upper plate. In addition, it will also include polarizing plates, alignment films and other materials and components used in traditional LCD displays, in addition to color filters. In order to avoid confusing the present invention, other components related to the traditional liquid crystal display panel are not explained and are not shown in the drawings.
由本發明沒有使用彩色濾鏡,因此整個液晶顯示器有幾個像素就有多少的解析度。相較於傳統的彩色液晶顯示器,本發明的液晶顯示器的解析度可以是傳統的三倍,甚至是可以達到為發光二極體顯示器的解析度。 Since the present invention does not use color filters, the entire liquid crystal display has as many resolutions as there are pixels. Compared with the traditional color liquid crystal display, the resolution of the liquid crystal display of the present invention can be three times that of the traditional color liquid crystal display, and can even reach the resolution of a light-emitting diode display.
本發明的詳細運作與實施例,請一併參考圖示予以說明。 The detailed operations and embodiments of the present invention are described with reference to the figures.
請參閱第二A圖,係顯示一個發光二極體封裝體的俯視示意圖,其中發光二極體封裝體100可包含一個紅光發光二極體晶片102,一綠光發光二極體晶片104,以及一個藍光發光二極體晶片106。紅光發光二極體晶片102,綠光發光二極體晶片104,以及藍光發光二極體晶片106組裝在封裝體100裡面,並且可以傳統的方法接合在封裝體內,例如覆晶接合或是打線接合。在本實施例中,發光二極體封裝體100內的紅光、綠光、與藍光的灰階值組成決定了這個區域內每個像素的色彩與亮度。
Please refer to Figure 2A, which is a schematic top view of a light-emitting diode package. The light-emitting
在一實施例中,毫發光二極體晶粒是比較合適的。在目前的科技中,因為微發光二極體顯示器會面對巨量轉移的問題,但是毫發光二極體目前是商業上可行的方案。雖然毫發光二極體晶片相較於傳統液晶顯示器的一個像素有較大的面積,並且不能直接應用在高解析度的顯示器上,但是,藉由控制液晶顯示器的單一區域的所有像素的色彩及亮度,應用在液晶顯示器的毫發光二極體背光模組仍是可行的。 In one embodiment, millimeter LED dies are suitable. In current technology, micro-LED displays will face the problem of mass transfer, but milli-LED displays are currently a commercially viable solution. Although the millimeter LED chip has a larger area than a pixel of a traditional LCD and cannot be directly applied to high-resolution displays, by controlling the color and color of all pixels in a single area of the LCD, Brightness, millimeter LED backlight modules used in LCD displays are still feasible.
一個區域的尺寸,或著是一個發光二極體的封裝尺寸,取決於毫發光二極體晶粒的尺寸以及發光角度,發光二極體封裝體的出光角度,以及所需的背光亮度。為了在一個區域中提供均勻的背光(smear out position factor)以及均勻的混色,可以在發光二極體的封裝體內加入擴散子(diffusors)或是膠才表面粗化。而發光二極體的驅動方式可以採用傳統的電流驅動,或是脈波寬度調變(PWM;Pulse-Width Modulation)的方式,其中在一特定的實施例中脈波寬度調變是較佳的,因為可以提供更高的灰階值。 The size of an area, or the package size of an LED, depends on the size and light-emitting angle of the LED die, the light exit angle of the LED package, and the required backlight brightness. In order to provide uniform backlight (smear out position factor) and uniform color mixing in an area, diffusers (diffusors) or glue can be added to the light-emitting diode package to roughen the surface. The driving method of the light-emitting diodes can be traditional current driving or pulse-width modulation (PWM; Pulse-Width Modulation). In a specific embodiment, pulse-width modulation is preferred. Because it can provide higher grayscale values.
請參閱第2B圖,本發明不只是可以提供紅綠藍發光二極體晶片,另外顏色的發光二極體也是可以提供。一個白光發光二極體108在一個實施例中也可以接合在封裝體100裡,係為了增加亮度的對比。因此,紅藍綠發光二極體以及一個白光發光二極體108在一個區域中作為一組用以提供背光。其他的實施例包含紅藍綠發光二極體以及一個黃光發光二極體(未在圖中顯示)在一個區域中作為一組用以提供背光。不只是四個發光二極體晶粒可以被組裝在一個封裝體內,六個發光二極體也是可以合成一組,例如紅光發光二極體,綠光發光二極體,藍光發光二極體,黃光發光二極體(未在圖中顯示),洋紅色(magenta)發光二極體(未在圖中顯示)與青色(cyan)發光二極體(未在圖中顯示)也可以組裝在一個封裝體內。另一種實施例包含紅藍綠發光二極體以及一個青綠光(turquoise)發光二極體在一個區域中作為一組用以提供背光,或是其他的組合。
Please refer to Figure 2B. The present invention can not only provide red, green, and blue light-emitting diode chips, but also light-emitting diodes of other colors. A white
請參閱第3A圖,係顯示本發明的發光二極體封裝體的側視示意圖,其中發光二極體晶片102與106被封裝在一個封裝體100內。在這個實施例中,發光二極體封裝體100的一個重要目的是提供較大的發射角度用以涵蓋較大的區域面積。發光二極體102的裸晶的發射角度大概在120度,並且可以透過粗化發光二極體晶片及封裝體表面的表面增加出光的角度,
例如可以增加到大於或等於140度。透過擴散子(diffusor)112也可以將發光二極體晶片所發射的光均勻的混合,以及將斜射出去的光轉換成各向均勻的發射。發射角度也可以透過光學元件或是封裝的外型來增加。在這個實施例中,封裝體的牆就不能設計得太高並且有個傾斜角度。發光二極體的封裝體,在發光二極體晶片接合之後可以注入透明的膠材,例如環氧樹脂或是矽氧烷。而擴散子就混在透明膠材中一起被注入到發光二極體封裝體裡面。在本發明中,是不需要任何的螢光粉或是量子點參與混光,因為不需要任何的色彩轉換。另外,為了增加發光的角度,發光二極體封裝體可以不需要有牆而只有基板,例如第3B圖所示。在第3B圖中,透明膠材110位於封裝體101的上方,覆蓋所有的發光二極體。在這個實施例中,是屬於晶片位於基板(COB;Chip on Board)的應用。
Please refer to FIG. 3A , which is a schematic side view of the light-emitting diode package of the present invention, in which the light-emitting
即使有了擴散子,發光二極體組裝體的表面有特定的區域會較亮,或是特定的區域的某一個顏色會比較鮮明。在第3B圖中,紅光發光二極體102的正上方還是會有較亮的紅光,這樣會造成整個發光二極體組裝體整體的混光不夠均勻。一種解決方式,可以參考第3C圖。為了增加發光二極體的組裝體中,各色光的出光角度的均勻性,可以對透明膠材110的表面進行膠材粗化,如第3C圖所示。這裡是指發光二極體的組裝體的表面粗化,而不是發光二極體晶片的晶片表面粗化。這個是重要的,經過組裝體的表面粗化,紅光可以在整個組裝體的表面均勻的發光。同樣的,對於其他的色光也有相同的效果。對於第3A圖中的發光二極體封裝體,在填入透明膠材之後也可以進行表面粗化。
Even with the diffuser, specific areas on the surface of the light-emitting diode assembly will be brighter, or a certain color in specific areas will be more vivid. In Figure 3B, there is still bright red light directly above the red light-emitting
請參閱第4圖,係顯示了一個液晶顯示器中一個像素的薄膜電晶體(TFT)與液晶的電路示意圖。本發明中,液晶顯示器的驅動方式跟傳統的液晶顯示器是相同的,一個薄膜電晶體的閘極與掃描線電性連接且接 受開啟的指令,源極與訊號線連接且接受開啟液晶的電位到汲極。汲極與液晶電容的控制電極相連接,而液晶電容的另一個電極接地。液晶電容的兩個電極,皆為透明電極。在本發明中,有兩類驅動液晶的方式,一種是將像素中的液晶全開啟或是全關閉,而背光模組直接提供灰階值的光。另一種是跟傳統一樣,液晶直接提供像素中灰階值的控制,而背光模組是提供完整亮度的光。液晶電容的電極,一個跟薄膜電晶體的汲極電性連接,是位於液晶顯示面板的下板,而另一個接地,是位於上板。 Please refer to Figure 4, which shows a schematic circuit diagram of a thin film transistor (TFT) and liquid crystal for one pixel in a liquid crystal display. In the present invention, the driving method of the liquid crystal display is the same as that of the traditional liquid crystal display. The gate of a thin film transistor is electrically connected to the scanning line and connected In response to the turn-on command, the source is connected to the signal line and receives the potential to turn on the liquid crystal to the drain. The drain electrode is connected to the control electrode of the liquid crystal capacitor, and the other electrode of the liquid crystal capacitor is connected to ground. The two electrodes of the liquid crystal capacitor are both transparent electrodes. In the present invention, there are two ways of driving liquid crystal. One is to turn the liquid crystal in the pixel fully on or fully off, and the backlight module directly provides light with gray scale values. The other is the same as the traditional one. The liquid crystal directly provides control of the grayscale value of the pixel, while the backlight module provides light with full brightness. One of the electrodes of the liquid crystal capacitor is electrically connected to the drain of the thin film transistor and is located on the lower plate of the LCD panel, while the other is grounded and located on the upper plate.
請參閱第5A圖,其中顯示了一個液晶顯示器中下板的一個區域。一個區域涵蓋有多個像素,並且每一個像素會有一個薄膜電晶體來驅動。在第5A圖的實施例中,一個區域是由5x15像素所組成,總共有75個像素,也就是一個區域的解析度有75的像素。與傳統的彩色液晶顯示器不同的,會只有5x5的像素,總共也只有25個像素。每一個像素的左上角,跟傳統的液晶顯示器一樣,具有薄膜電晶體,像素中間的地區是液晶顯示器的透明電極,作為液晶電容的控制電極。另外,液晶顯示面板會包含一個上板以及中間的液晶層,其中上板有透明電極作為液晶電容的接地用的電極。 See Figure 5A, which shows an area of the lower panel of an LCD monitor. An area covers multiple pixels, and each pixel is driven by a thin film transistor. In the embodiment of Figure 5A, an area is composed of 5x15 pixels, with a total of 75 pixels, that is, the resolution of an area is 75 pixels. Unlike traditional color LCD displays, there will only be 5x5 pixels, and only 25 pixels in total. The upper left corner of each pixel has a thin film transistor just like a traditional LCD. The area in the middle of the pixel is the transparent electrode of the LCD, which serves as the control electrode of the liquid crystal capacitor. In addition, the LCD panel will include an upper plate and a liquid crystal layer in the middle. The upper plate has a transparent electrode as a grounding electrode for the liquid crystal capacitor.
請參閱第5B圖,其中一個具有紅色發光二極體102、綠色發光二極體104、以及藍色發光二極體106封裝體位於一個液晶顯示面板的一個區域的下方。在這個區域當中,所有的像素的色彩的灰階值全部都由紅色,綠色,藍色發光二極體直接提供。由於發光二極體的出光角度,一個區域的面積可以稍微大於一個發光二極體的封裝體,這取決於發光二極體封裝體與液晶面板之間的距離。由於背光可直接提供三原色的混光,對於人眼來看,相較於傳統使用白光作為背光源的液晶顯示器,會有較佳的色彩飽和度(color saturation)或是可以提供較其的廣色域(wide color gamut)。同
時也會提供較佳的亮度。也因為直接使用三原色的發光二極體,在本發明中可以不需要使用多原色顯示技術。即使使用多原色顯示技術,背光的使用效率也比較高。
Referring to FIG. 5B , a package with a
另外,可以在每一個發光二極體封裝體外部上貼附一個偏極片。由於偏極片的成本不低,如果應用在整個顯示器的時候有一個小區域有缺陷,則整張的偏極片就只能報廢。但是,由於在本發明中,可以在單一的區域中貼附偏極片,這樣對偏極片的製程上的良率也可以提升。當然,也可以如傳統的方式,貼附整片的偏極片。 In addition, a polarizing film can be attached to the outside of each light-emitting diode package. Since the cost of the polarizer is not low, if a small area is defective when applied to the entire display, the entire polarizer will have to be scrapped. However, in the present invention, the polarizer sheet can be attached in a single area, so the manufacturing yield of the polarizer sheet can also be improved. Of course, the entire polarizer can also be attached in the traditional way.
顯示的方法主要採用區域影像顯示法(zone image displaying method),透過人眼的視覺暫留來呈現影像。顯示的方式有三種,混色像素掃描法(mixed-color pixel scanning method),單色像素掃描法(single-color pixel scanning method),以及單色區域影像交疊法(single-color image interlaced method)。 The display method mainly adopts the zone image displaying method, which presents images through the persistence of vision of the human eye. There are three display methods, mixed-color pixel scanning method, single-color pixel scanning method, and single-color image interlaced method.
首先介紹混色像素掃描法(mixed-color pixel scanning method)。主要是在區域中,在視覺暫留的時間裡,每一個像素依序完全開啟與關閉,同時背光依照像素開啟的時續同時提供混色的背光。在本實施例中,當第一個像素的液晶處於全開啟的狀態,這個時候背光提供第一個像素的紅綠藍光的值。由於其他所有的像素的液晶都處於關閉的狀態,因此其他的像素是屬於黑色。由於第一個像素的液晶是全開啟,但是背光提供的紅光,綠光,藍光的值決定了第一個像素的色彩值及亮度,所以這個時候單一顏色的灰階值不再是由液晶的旋扭狀態來決定。當第一個像素的電晶體將液晶完全關閉,第二個像素的電晶體將液晶完全打開,並且背光提供第二個像素的紅色,綠色與藍色的值。如此依序下去,直到所有的像素全部都開啟與關閉。而在整個區域當中的所有的像素,從第一個像素的 開啟到最後一個像素的開啟,只要在人眼的視覺暫留的時間以內,就可以看到一個區域的影像。由於發光二極體的反應速度相當的快,相較於傳統的液晶反應速度快太多。目前液晶的反應速度,最快在1-2毫秒,但是發光二極體的反應速度可以在10-9秒。另外,液晶的反應速度也只有在全開與全關的時候才是最快的,如果只是在灰階值反應速度還會降低。傳統的液晶顯示器,如果液晶的反應速度不夠快,例如滑鼠的鼠標滑過去的時候會看到彗尾的軌跡。或是當影像的變化過快,則影片的播放也會跟著出糊掉(mura)。透過本發明,還可以消除這個問題。另外,還可以在像素液晶的液晶還沒有完全關閉的時候,對應到該像素的發光二極體就可以完全的熄滅。這樣,不但是可以增加影像的對比,還可以播放動作較快的影片。 First, the mixed-color pixel scanning method is introduced. Mainly in the area, during the visual persistence time, each pixel is completely turned on and off in sequence, and the backlight simultaneously provides mixed-color backlight according to the duration of the pixel being turned on. In this embodiment, when the liquid crystal of the first pixel is in a fully-on state, the backlight provides the red, green, and blue light values of the first pixel. Since the liquid crystals of all other pixels are turned off, the other pixels are black. Since the LCD of the first pixel is fully turned on, the red, green, and blue light values provided by the backlight determine the color value and brightness of the first pixel, so at this time the grayscale value of a single color is no longer determined by the LCD. Determined by the state of the knob. When the first pixel's transistor turns the liquid crystal fully off, the second pixel's transistor turns the liquid crystal fully on, and the backlight provides the second pixel's red, green, and blue values. Continue in this order until all pixels are turned on and off. And all the pixels in the entire area, starting from the first pixel From turning on to the last pixel, as long as the human eye's vision persists, you can see the image of an area. Because the response speed of light-emitting diodes is quite fast, it is much faster than the response speed of traditional liquid crystals. At present, the response speed of liquid crystal is 1-2 milliseconds at the fastest, but the response speed of light-emitting diodes can be 10-9 seconds. In addition, the response speed of the liquid crystal is the fastest only when it is fully open and fully closed. If it is only in gray scale value, the response speed will be slower. In traditional LCD displays, if the response speed of the liquid crystal is not fast enough, for example, when the mouse slides over, you will see the trajectory of the comet tail. Or when the image changes too quickly, the video playback will also be blurred (mura). Through the present invention, this problem can also be eliminated. In addition, when the liquid crystal of the pixel liquid crystal has not been completely turned off, the light-emitting diode corresponding to the pixel can be completely extinguished. In this way, not only can the contrast of the image be increased, but also fast-moving videos can be played.
另外,本發明不再需要使用彩色濾鏡來產生彩色。由於彩色濾鏡的製程並不是很均勻與穩定,這會造成傳統的兩個液晶顯示器,即使是完全相同的製程,也不會有相同的顏色表現。這個時候,也只能透過驅動液晶的電路回頭來修補每一個液晶顯示器的彩色濾鏡的差異。然而,透過本發明,因為沒有彩色濾鏡,所以每一台出產的液晶顯示器,只會有相同的顏色表現,並且有較高的亮度。 Additionally, the present invention eliminates the need to use color filters to produce color. Since the color filter manufacturing process is not very uniform and stable, this will cause two traditional LCD displays to have the same color performance even if they are made using exactly the same process. At this time, we can only go back and repair the difference in the color filter of each LCD display through the circuit that drives the liquid crystal. However, through the present invention, since there is no color filter, every LCD monitor produced will only have the same color performance and higher brightness.
詳細的影像驅動方式,請一併參閱以下的圖示。 For detailed image driving methods, please refer to the following diagrams.
舉例而言,請參閱第6A圖,其中在本實施例裡一個區域可以涵蓋九個像素。在本發明中一個區域可以對應到幾個像素取決於一個區域的尺寸,在本實施例中九個像素只是為了方便說明。這九個像素分別為(1,1)、(1,2)、(1,3)、(2,1)、(2,2)、(2,3)、(3,1)、(3,2)、以及(3,3)來表示。在這一個區域裡面,某一個影像要透過這九個像素來表示,則這九個像素會有對應到的三原色各自的灰階值。因此首先定義這一個區域裡面九個像素的色彩的灰階值,分別為(R11,G11,B11)、(R12,G12,B12)、(R13,G13, B13)、(R21,G21,B21)、(R22,G22,B22)、(R23,G23,B23)、(R31,G31,B31)、(R32,G32,B32)以及(R33,G33,B33),如第6B圖所示,其中(R11,G11,B11)表示位於像素(1,1)的三原色當中各自的灰階值。這九個像素在傳統的液晶顯示器中,需要用薄膜電晶體去開啟或是關閉在81個像素的液晶的狀態,才可以表現總共9個像素的色彩值。 For example, please refer to FIG. 6A , in which one area may cover nine pixels in this embodiment. In the present invention, how many pixels a region can correspond to depends on the size of the region. In this embodiment, nine pixels are just for convenience of illustration. These nine pixels are (1,1), (1,2), (1,3), (2,1), (2,2), (2,3), (3,1), (3 ,2), and (3,3) to express. In this area, if a certain image is represented by these nine pixels, these nine pixels will have corresponding grayscale values of the three primary colors. Therefore, first define the grayscale values of the colors of the nine pixels in this area, which are (R11, G11, B11), (R12, G12, B12), (R13, G13, B13), (R21,G21,B21), (R22,G22,B22), (R23,G23,B23), (R31,G31,B31), (R32,G32,B32) and (R33,G33,B33) , as shown in Figure 6B, where (R11, G11, B11) represents the grayscale value of each of the three primary colors located in pixel (1,1). In a traditional LCD display, these nine pixels need to use thin film transistors to turn on or off the liquid crystal state of 81 pixels in order to express the color values of a total of 9 pixels.
呈現影像的方式,請參閱第7A圖。首先,第一個像素(1,1)的液晶完全開啟開啟,其它的八個像素全部關閉。這個時候,區域的背光的三個發光二極體提供對應到的一像素的三原色的灰階值(R11,G11,B11),之後關閉第一個像素的液晶以及背光。請注意到,關閉發光二極體的速度是比較快。在這裡,液晶是屬於全開與全關,液晶並不存在灰階的開啟。而三原色的灰階值由背光的發光二極體直接決定,這同時降低了液晶的灰階值的負擔,不只是解決了液晶的反應速度較慢的問題。由於其他的像素全部處於關閉的狀態,所以對於人眼來說是在第一個像素(1,1)的位置看到三原色的灰階值(R11,G11,B11)的混光效果。 See Figure 7A for the way the image is presented. First, the liquid crystal of the first pixel (1,1) is fully turned on, and the other eight pixels are all turned off. At this time, the three light-emitting diodes of the area's backlight provide the grayscale values of the three primary colors (R11, G11, B11) corresponding to one pixel, and then turn off the liquid crystal and backlight of the first pixel. Please note that turning off the LED is relatively fast. Here, the LCD is fully on and fully off, and there is no grayscale on for the LCD. The grayscale values of the three primary colors are directly determined by the light-emitting diodes of the backlight. This also reduces the burden of the grayscale value of the liquid crystal, and not only solves the problem of the slow response speed of the liquid crystal. Since all other pixels are turned off, the human eye sees the mixed light effect of the grayscale values of the three primary colors (R11, G11, B11) at the position of the first pixel (1,1).
之後,請參閱第7B圖,完全開啟第二個像素(1,2)的液晶,以及關閉其他八個像素的液晶,而第二個像素開啟時,背光轉換成提供(R12,G12,B12)的灰階值。然後關閉第二個像素的液晶,以及關閉背光。這時候,對於人眼來說,會在第二個像素(1,2)看到三原色的灰階值(R12,G12,B12)的混光。這樣的方式持續到最後一個像素(3,3),如第7C圖所示。 After that, please refer to Figure 7B, the LCD of the second pixel (1,2) is fully turned on, and the LCD of the other eight pixels is turned off, and when the second pixel is turned on, the backlight is converted to provide (R12, G12, B12) grayscale value. Then turn off the second pixel's LCD, as well as turn off the backlight. At this time, to the human eye, the mixed light of the grayscale values of the three primary colors (R12, G12, B12) will be seen in the second pixel (1,2). This pattern continues until the last pixel (3,3), as shown in Figure 7C.
第8圖呈現了在人眼視覺暫留的時間中,不同的時域當中,不同的像素的開啟與關閉。橫坐標是表示時間,縱座標表示第幾個像素的完整開啟或是完整關閉。在第一段時間,只有第一個像素是開啟的,其它的像素是全部關閉。之後的第二個時間是只有第二個像素開啟,其他的像素是關閉的。以此類推到第九的像素為止。而這整個時間必須要在人眼的 視覺暫留的時間之內完成,對人眼來說在這個區域裡就會看到完整的影像。這類的影像呈現的方式,類似於傳統的陰極射線管的影像顯示方式,也是在人眼的視覺暫留的時間之內把整個影像依序掃描完成。 Figure 8 shows the opening and closing of different pixels in different time domains during the persistence time of human vision. The abscissa represents time, and the ordinate represents which pixel is completely on or off. In the first period, only the first pixel is on, and all other pixels are off. The second time after that, only the second pixel is on, and the other pixels are off. And so on until the ninth pixel. And this whole time must be in the human eye It is completed within the visual persistence time, and the human eye will see a complete image in this area. This type of image presentation method is similar to the traditional cathode ray tube image display method, which also scans the entire image sequentially within the duration of human vision.
在這個實施例中,不需要依照每個像素的座標順序開啟與關閉。例如先開啟第一個像素(1,1),然後開啟第5個像素(2,2)。這樣做有個好處,如果液晶的反應速度不夠快,這種方式可以讓不相鄰的像素接續開啟,增加影像的像素對比。對於一個區域裡面,如果像素太多,這個會是一個可能的解決方式。因此,像素的順序是無關的,只要在人眼的視覺暫停的時間內把每一個像素都開啟關閉一次即可。 In this embodiment, there is no need to turn on and off sequentially according to the coordinates of each pixel. For example, first turn on the first pixel (1,1), and then turn on the fifth pixel (2,2). There is an advantage to this. If the response speed of the liquid crystal is not fast enough, this method can allow non-adjacent pixels to be turned on one after another, increasing the pixel contrast of the image. For an area with too many pixels, this would be a possible solution. Therefore, the order of the pixels is irrelevant, as long as each pixel is turned on and off once during the pause time of human vision.
在本發明中,發光二極體透過脈波寬度調變來驅動所提供的灰階值可以大於8位元,例如10位元或是12位元,甚至是可以到達12位元以上。目前的液晶顯示器,受限於液晶旋扭的角度,市面上商用的液晶顯示器均只能提供8位元的灰階值。因此每一個顏色的灰階值就只有256個(包含全亮與全暗)。而透過發光二極體的驅動方式,可以提供的灰階值可以大於8位元,這樣提供的混色的彩色值,可以遠大於液晶顯示器所提供的彩色混色值。這個方式有個好處,因為要讓液晶顯示器呈現灰階,必須要控制液晶的轉向的角度,即使是最好的橫向電場效應顯示技術(IPS;In-Plane Switch)技術,目前的灰階也只有8位元的灰階。組合起來的全彩也就只有16萬色。然而,透過本發明的這個實施例,每個顏色的灰階可以透過對發光二極體使用脈波寬度調變的方式來呈現,因此除了8位元的灰階之外,還可以提供10位元的灰階(1024個灰階值),這樣組合的全彩就有10億色,可以讓LCD的顯示器提供更加豐富的顏色。甚至,透過良好的驅動LED,可以到達12位元的灰階(4096灰階值),這樣的全彩可以達到68億色,這樣的色彩豐富度可以比擬傳統的陰極射線的顯示器。 In the present invention, the gray scale value provided by driving the light emitting diode through pulse width modulation can be greater than 8 bits, such as 10 bits or 12 bits, or even more than 12 bits. Current LCD displays are limited by the angle of the LCD knob. Commercial LCD displays on the market can only provide 8-bit grayscale values. Therefore, there are only 256 grayscale values for each color (including full light and full dark). Through the driving method of light-emitting diodes, the gray scale value that can be provided can be greater than 8 bits, and the color mixing value provided in this way can be much greater than the color mixing value provided by the liquid crystal display. This method has an advantage, because in order for the LCD display to display gray scale, the turning angle of the liquid crystal must be controlled. Even with the best lateral electric field effect display technology (IPS; In-Plane Switch) technology, the current gray scale is only 8-bit grayscale. The combined full color is only 160,000 colors. However, through this embodiment of the present invention, the grayscale of each color can be presented by using pulse width modulation on the light-emitting diodes, so in addition to the 8-bit grayscale, a 10-bit grayscale can also be provided. Yuan's gray scale (1024 gray scale values), the combined full color has 1 billion colors, which allows the LCD display to provide richer colors. Even, through good LED driving, 12-bit gray scale (4096 gray scale value) can be achieved, and such full color can reach 6.8 billion colors. Such color richness can be compared with traditional cathode ray displays.
另一個實施例,是先依序處理每一個像素的紅色灰階值,然後是依序處理每個像素的綠色灰階值,最後再依序處理每一個像素的藍色灰階值。這種方式是單色像素掃描法(single-color pixel scanning method),也就是透過每一個像素的單色進行掃描。當所有的顏色在人眼的視覺暫留的時間內完成,對人眼來說就呈現一張影像。 Another embodiment is to first process the red grayscale value of each pixel sequentially, then process the green grayscale value of each pixel sequentially, and finally process the blue grayscale value of each pixel sequentially. This method is a single-color pixel scanning method, which scans through a single color of each pixel. When all the colors are completed within the duration of human vision, an image appears to the human eye.
與前一個實施例相同的,一個區域裡擁有9個像素,並且要先決定每一個像素的各自色彩的灰階值。之後,請參閱第9A圖,首先開啟第一個像素(1,1),並且背光只提供位於第一個像素的紅色灰階值(R11,0,0)。這個時候,背光不參與混光。然後依序將每一個像素開啟與關閉,並且依照順序背光模組提供每一個像素的紅色灰階值,直到最後一個像素(R33,0,0),如第9B圖所示。接著,同樣的方式,再度依序開啟每一個像素,並且背光依照像素的順序只提供每一個像素對應的綠色的灰階值。最後,同樣的方式,再度依序開啟每一個像素,並且背光依照像素的順序只提供每一個像素對應的藍色的灰階值。當提供最後一個像素的藍色灰階值(0,0,B33),如第9C圖所示,必須要在人眼的視覺暫留的時間完成。 The same as the previous embodiment, there are 9 pixels in one area, and the grayscale value of each pixel's respective color must first be determined. After that, please refer to Figure 9A, first turn on the first pixel (1,1), and the backlight only provides the red grayscale value located at the first pixel (R11,0,0). At this time, the backlight does not participate in light mixing. Then each pixel is turned on and off in sequence, and the backlight module provides the red grayscale value of each pixel in sequence until the last pixel (R33,0,0), as shown in Figure 9B. Then, in the same way, each pixel is turned on in sequence again, and the backlight only provides the green grayscale value corresponding to each pixel in the order of the pixels. Finally, in the same way, each pixel is turned on again in sequence, and the backlight only provides the blue grayscale value corresponding to each pixel in the order of the pixels. When providing the blue grayscale value (0,0,B33) of the last pixel, as shown in Figure 9C, it must be completed within the persistence time of human vision.
在人眼視覺暫留時間內每一個像素的運作方式可參閱第10圖,其中每一個像素仍然是全部開啟與全部關閉。在這個實施例中,由於沒有混光,每一個像素需要開啟三次。 The operation of each pixel during the persistence time of human vision can be seen in Figure 10, in which each pixel is still fully on and fully off. In this embodiment, since there is no light mixing, each pixel needs to be turned on three times.
在這個實施例中,顏色的順序並不重要,也就是可以先開啟區域中所有像素的綠色在每個像素的掃描,之後是藍色,最後是紅色。甚至是,顏色之間可以混搭,例如可以先開啟第一個像素並且背光提供紅光的灰階值,之後是開啟第五個像素並且背光可以提供藍光的灰階值。只要是在人眼的視覺暫留的時間之內,像素開啟的空間順序與顏色開啟的順序都不重要。 In this embodiment, the order of the colors is not important, that is, the scan of green for each pixel of all pixels in the area can be turned on first, followed by blue, and finally red. Even colors can be mixed and matched. For example, the first pixel can be turned on first and the backlight provides a red light grayscale value, and then the fifth pixel can be turned on and the backlight can provide a blue light grayscale value. As long as it is within the duration of human vision, the spatial order in which the pixels are turned on and the order in which the colors are turned on are not important.
另一種驅動影像的實施例,是單色區域影像交疊法(single-color image interlaced method)。相同的,先決定好一個區域的每一個像素的所有色彩的灰階值。一開始,背光只提供紅光,並且是提供最大亮度的紅光,同時區域中液晶顯示器的每個像素控制各自像素的紅光的灰階值,如第11A圖所示。之後,背光只提供最大亮度的綠光,同時區域中每個像素控制各自像素的綠光灰階值,如第11B圖所示。最後,背光只提供最大亮度的藍光,同時區域中每個像素控制各自像素的藍光灰階值,如第11C圖所示。在人眼視覺暫留時間內每一個像素的運作方式可參閱第12圖,其中在紅光開啟的階段,每一個像素同時開啟各自的灰階值。因此,每一個像素的灰階值在這個實施例中並不相同,取決於影像所需的灰階值。相同的,在這個實施例中,顏色的開啟順序並不重要,而是單色影像在人眼視覺暫留的時間內的交疊。在第三個實施例中,色彩的灰階值仍然是由液晶決定,但是解析度與前兩個相同,都可以擁有高解析度,並且都不需要使用彩色濾鏡。 Another example of driving images is the single-color image interlaced method. Similarly, first determine the grayscale values of all colors for each pixel in an area. At the beginning, the backlight only provides red light, and it is the red light that provides maximum brightness. At the same time, each pixel of the LCD in the area controls the grayscale value of the red light of the respective pixel, as shown in Figure 11A. Afterwards, the backlight only provides maximum brightness green light, and each pixel in the area controls the green grayscale value of its respective pixel, as shown in Figure 11B. Finally, the backlight only provides maximum brightness blue light, while each pixel in the area controls the blue light grayscale value of its respective pixel, as shown in Figure 11C. The operation of each pixel during the persistence time of human vision can be seen in Figure 12. During the stage when the red light is turned on, each pixel turns on its own grayscale value at the same time. Therefore, the grayscale value of each pixel is not the same in this embodiment, depending on the required grayscale value of the image. Similarly, in this embodiment, the order in which the colors are turned on is not important, but the overlap of the monochromatic images within the duration of human vision. In the third embodiment, the gray scale value of the color is still determined by the liquid crystal, but the resolution is the same as the first two, both can have high resolution, and there is no need to use color filters.
【00100】在以上的實施例,本發明提供了一種不需要彩色濾鏡的液晶顯示器,如第13圖所示。每一個發光二極體封裝體100-1與100-2對應到液晶顯示器的兩個區域,每一個發光二極體封裝體100裡面包含至少有紅色,綠色,與藍色發光二極體晶片。兩片偏極板16-1與16-2分別覆蓋住對應的兩個發光二極體封裝體100-1與100-2。液晶顯示面板,包含了下板14與上板10,其中下板14在每一個像素分別具有一個薄膜電晶體用以控制在每一個像素的液晶的開啟的程度或是關閉。在上板12與下板14之間有一層液晶層,而在上板12上覆蓋有一層偏極板12。影像的驅動,主要是透過人眼的視覺暫留在區域中呈現區域中的影像。透過區域的組合,可以完整的顯示所有需要的影像。每一個區域對應的發光二極體封裝體與區域的薄膜電晶體可以
有自己的驅動裝置,或是幾個區域對應的數個發光二極體封裝體與區域的薄膜電晶體可以共用一個驅動裝置。
[00100] In the above embodiments, the present invention provides a liquid crystal display that does not require a color filter, as shown in Figure 13. Each light-emitting diode package 100-1 and 100-2 corresponds to two areas of the liquid crystal display. Each light-emitting
【00101】另外一種實施例可以參閱第14圖,發光二極體組裝體100-3與100-4為基板上晶片(COB;Chip On Board)的結構。所有的發光二極體晶片是直接打件在基板上,並且透明樹脂將每一個區域封住。 [00101] For another embodiment, please refer to Figure 14. The light-emitting diode assemblies 100-3 and 100-4 have a chip-on-board (COB) structure. All light-emitting diode chips are directly printed on the substrate, and transparent resin seals each area.
【00102】在本發明中,液晶顯示器提供的黑色會比傳統的液晶顯示器還要黑,因為傳統的液晶顯示器中背光一直都是完全開啟,而液晶顯示面板再怎樣的關閉所有的背光,仍然會有一些漏光發生。這在全黑的房間中看液晶顯示器時會特別的明顯。為了讓目前的液晶顯示器有比較好的黑色呈現,還採用的區域調光(local dimming)的技術。而本發明的前兩個實施例因為本身自帶有調光(dimming)的功能,可以說是自然調光(nature dimming),並不需要傳統的區域調光技術。而在第三個實施例中,也可以應用區域調光的技術。例如在一個區域(zone)中,如果這個區域的某一色的背光比較暗,可以將這一色的亮度調低。 [00102] In the present invention, the black color provided by the liquid crystal display will be darker than that of the traditional liquid crystal display, because the backlight in the traditional liquid crystal display is always fully turned on, and the liquid crystal display panel will still turn off all the backlight. There is some light leakage occurring. This is particularly noticeable when viewing an LCD monitor in a completely dark room. In order to make current LCD displays have better black presentation, local dimming technology is also used. The first two embodiments of the present invention have their own dimming function, which can be said to be natural dimming, and do not require traditional local dimming technology. In the third embodiment, local dimming technology can also be applied. For example, in a zone, if the backlight of a certain color in this zone is relatively dark, you can lower the brightness of this color.
【00103】在本發明中,由於沒有彩色濾鏡,背光的使用效率較高,不管使用哪一個實施例呈現影像顯示方法,都可以有較低的功耗。而且,發光二極體是動態的驅動,當影像不是高亮度的時候,可以有更低的功耗。 [00103] In the present invention, since there is no color filter, the backlight is used more efficiently. No matter which embodiment is used to present the image display method, lower power consumption can be achieved. Moreover, the light-emitting diodes are dynamically driven and can have lower power consumption when the image is not high-brightness.
【00104】由於沒有彩色濾鏡,如果背光提供的亮度跟傳統的要求一樣,這樣的液晶顯示器至少有傳統液晶顯示器的三倍亮度。 [00104] Since there is no color filter, if the brightness provided by the backlight is the same as the traditional requirement, such an LCD display will have at least three times the brightness of a traditional LCD display.
【00105】由於沒有彩色濾鏡,每一個像素可以直接提供三原色,而不需要像傳統的液晶顯示器一樣提供三個子像素,解析度與傳統的液晶顯示器相比較可以提高了三倍。從而達到了一個薄膜電晶體直接控制一個像素。 [00105] Since there is no color filter, each pixel can directly provide three primary colors without providing three sub-pixels like a traditional LCD display. Compared with traditional LCD displays, the resolution can be increased three times. Thus, a thin film transistor can directly control a pixel.
【00106】相較於傳統的液晶顯示器,採用混色像素掃描法或是單色像素掃描法,液晶顯示面板的驅動方式會比較簡單,也不需要使用灰階控制 的驅動裝置,可以有更低的製造成本。 [00106] Compared with traditional LCD displays, which use mixed-color pixel scanning or single-color pixel scanning, the driving method of the LCD panel is relatively simple and does not require the use of grayscale control. The driving device can have lower manufacturing cost.
【00107】由於色彩是直接來自於發光二極體的三原色,影像的顯示可以有更好的色彩飽和度。相較於傳統的液晶顯示器,色彩的飽和度是由背光與彩色濾鏡一起決定,當背光的提供的頻譜不夠豐富,透過彩色濾鏡呈現的色彩飽和度就會降低不少。最明顯的例子是目前的液晶顯示器在金色的呈現上,往往是比較弱。 [00107] Since the colors come directly from the three primary colors of the light-emitting diodes, the display of the image can have better color saturation. Compared with traditional LCD displays, color saturation is determined by the backlight and color filters. When the spectrum provided by the backlight is not rich enough, the color saturation displayed through the color filter will be reduced a lot. The most obvious example is that current LCD monitors tend to be relatively weak in the presentation of gold.
【00108】以上所述之實施例僅係為說明本發明之技術思想及特點,其目的在使熟習此項技藝之人士能夠瞭解本發明之內容並據以實施,當不能以之限定本發明之專利範圍,即大凡依本發明所揭示之精神所作之均等變化或修飾,仍應涵蓋在本發明之專利範圍內。 [00108] The above-described embodiments are only for illustrating the technical ideas and characteristics of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They should not be used to limit the scope of the present invention. The patent scope, that is, all equivalent changes or modifications made in accordance with the spirit disclosed in the present invention should still be covered by the patent scope of the present invention.
102:紅光發光二極體 102:Red light emitting diode
104:綠光發光二極體 104:Green light emitting diode
106:藍光發光二極體 106:Blue light emitting diode
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