201118834 六、發明說明: 【發明所屬之技術領域】 本發明係關於一種LCD面板之光源時場時序控制 方法’尤其關於一種藉由在時場中增加白光光源顯示來 提升顯示亮度的LCD面板之時場時序控制方法。201118834 VI. Description of the Invention: [Technical Field] The present invention relates to a light source time-field timing control method for an LCD panel, particularly relating to an LCD panel for increasing display brightness by adding a white light source display in a time field. Field timing control method.
【先前技術】 圖1顯示一習知液晶顯示器(LCD)之源極驅動電路 (Source Driver Circuit)與顯示面板(Panel)的連接的示 意圖。如該圖所示’習知液晶顯示器1〇包含一顯示面[Prior Art] Fig. 1 shows a schematic diagram of a connection of a source driver circuit of a conventional liquid crystal display (LCD) to a display panel (Panel). As shown in the figure, the conventional liquid crystal display 1 includes a display surface.
板11、複數條資料線1 2以及一源極驅動電路丨3。顯示 面板11包含二維矩陣之像素(pixel)2〇,每一像素2〇包 含—紅色子像素(sub-pixel)21、一綠色子像素22及— 籃色子像素23,該些資料線12分別控制紅色子像素 21 ’’彔色子像素22及藍色子像素23的動作。習知液曰 顯示器10的驅動方式是由驅動裝置的源極驅動電路= 分別驅動顯示面板11上的紅色子像素21、綠色子像素 22及藍色子像素23。然而顯示面板丨〗有多少排子像 素’就必需對應有多少條資料線來驅動,以及源極 電路丨3就提供給對應的驅動訊號。此外,液b 时 10必須配置彩色濾光片(c〇1〇r Filter)做R、G Β不器 光,所以液晶顯示器10的製造成本相當高。的濾 圖2顯示另一習 面板的連接示意圖。 包含—顯示面板11a、 知顯示器之源極驅動電路與顯示 如該圖所示’該習知顯示器 複數條資料線12a、以;<5 久一源極 201118834 驅動電路13a。顯示面板lla包含二維矩陣之像素20a, 每一像素20a包含一紅色發光單元(子像素)21a、一 綠色發光單元22a以及一藍色發光單元23a。發光單元 可以例如可為發光二極體(LED)。顯示器1 〇a的源極驅 動電路13a採用時場分割(time sharing)技術,用 以減少資料線的驅動訊號輸出數目。顯示器10a使用時 場分割技術所需的資料線數目僅要顯示器10之資料線 數目的1/3即可,而且不需搭配彩色濾光片,可大大 降低製造成本。 所謂的時場分割技術是指對於每個圖框(frame)先 點:紅色發光單元2丨a,讓螢幕變成紅色,再點亮綠色 發光單7L 22a,讓螢幕變成綠色,隨後再點亮藍色發光 單元23a,讓螢幕變成藍色。藉由人眼存在視覺暫留 (Visual staying phen〇men〇n,〇r durati〇n 〇f visi〇幻的特 性,使侍使用者於觀看顯示器時呈現彩色畫面之感覺。 圖3顯示用以驅動圖2顯示器之訊號的時序圖 (Timing Chart)。如圖3所示,源極驅動電路13a接收 垂直同步訊號vsync及水平同步訊號Hsync。於顯示晝 面的一個圖框τ的時間内’源極驅動電路13a的輸出訊 唬Sout分成二個子圖框,用以分別點亮紅色發光單元 21a、綠色發光單力22a及藍色發光單元23a。由於紅 色發光單το 21 a、綠色發光單元22a及藍色發光單元23& 會/刀別被點受,且每個子圖框均需要相同數量的水平同 步訊號Hsync的觸發信號,因此水平同步訊號Hsync 的頻率會被提高3倍。 201118834 光單=點3亮’由於時場分割的關係、,每™發 達到-定的亮變成只剩1/3個圖框時間’為了 和圖I實施例相同;^ u 光早70的冗度來達到 儿度,進而使得整個功率消耗增加。 【發明内容】 LCD 二 =於提供-種能夠增加顯示亮度的 坂之時%%序控制方法。 為了達成上述目的,本發明lCD 時序控制方法係利敬之光源時场 源,該LCD面板且有—U^開啟不同顏色之光 尸 /、有—原色的光源,該LCD面板之時 二„一工制方法除了包含依序開啟(t_ on)該三原色 色光源之步驟外’還包含同時一併開啟複數顏 色光源的步驟。 本發明LCD面板之時場時序控制方法由於包含同 時一併開啟複數顏色光源的步驟’所以該LCD面板之 時場時序控制方法將紅色、綠色、藍色等影像的開啟時 間從1/3圖柩時間提高請圖框時間,進而提高lcd 面板亮度。 【實施方式】 圖4顯示本發明LCD面板之光源時場時序控制方 法的,程圖。本發明使用之LCD面板包含三維矩陣像 素,每一像素包含三原色之發光單元,該三原色之發光 201118834 單元包含一紅色發光單元、一綠色發光單元及一藍色發 光單元。LCD面板會接收一垂直同步訊號vsync與一 水平同步訊號Hsync ’其中,垂直同步訊號Vsync在每 個圖框期間會被致能,且水平同步訊號Hsync在每個圖 框期間内會有n個觸發信號。The board 11, the plurality of data lines 12 and a source driving circuit 丨3. The display panel 11 includes two pixels of a two-dimensional matrix, each of which includes a red sub-pixel 21, a green sub-pixel 22, and a basket sub-pixel 23, and the data lines 12 The operations of the red sub-pixel 21''th sub-pixel 22 and the blue sub-pixel 23 are controlled separately. The conventional liquid helium display 10 is driven by the source driving circuit of the driving device = the red sub-pixel 21, the green sub-pixel 22, and the blue sub-pixel 23 on the display panel 11, respectively. However, the display panel 有 〗 〖How many rows of pixels ‘there must be corresponding to how many data lines are driven, and the source circuit 丨3 is provided to the corresponding driving signal. In addition, when the liquid b is 10, a color filter (c〇1〇r Filter) must be disposed for R, G, and no light, so the manufacturing cost of the liquid crystal display 10 is quite high. Filter Figure 2 shows the connection diagram of another panel. The display panel 11a, the source driver circuit of the display, and the display are as shown in the figure. The conventional display has a plurality of data lines 12a and a <5 long-term source 201118834 drive circuit 13a. The display panel 11a includes pixels 2a of a two-dimensional matrix, and each of the pixels 20a includes a red light emitting unit (sub-pixel) 21a, a green light emitting unit 22a, and a blue light emitting unit 23a. The lighting unit can for example be a light-emitting diode (LED). The source driving circuit 13a of the display 1 〇a employs a time sharing technique for reducing the number of driving signal outputs of the data lines. The number of data lines required for the display field 10a using the time domain segmentation technique is only 1/3 of the number of data lines of the display 10, and the color filter is not required, which greatly reduces the manufacturing cost. The so-called time-field segmentation technique refers to the first point for each frame: the red light-emitting unit 2丨a, which turns the screen into red, then lights up the green light-emitting single 7L 22a, turns the screen into green, and then lights up the blue. The color light-emitting unit 23a turns the screen into blue. With the visual persistence of the human eye (Visual staying phen〇men〇n, 〇r durati〇n 〇f visi illusory characteristics, the user feels the color of the picture when viewing the display. Figure 3 shows the drive The timing diagram of the signal of the display of Fig. 2. As shown in Fig. 3, the source driving circuit 13a receives the vertical synchronizing signal vsync and the horizontal synchronizing signal Hsync, and displays the source of the frame τ in the time frame. The output signal Sout of the driving circuit 13a is divided into two sub-frames for respectively illuminating the red light emitting unit 21a, the green light emitting single force 22a and the blue light emitting unit 23a. Since the red light emitting unit το 21 a, the green light emitting unit 22a and the blue The color light-emitting unit 23& will be affected by the point, and each sub-frame needs the same number of horizontal sync signal Hsync trigger signals, so the frequency of the horizontal sync signal Hsync will be increased by three times. 201118834 Light order = point 3 Bright 'Because of the time-field segmentation relationship, every TM hair reaches the steady-state brightness becomes only 1/3 frame time remaining' in order to be the same as the embodiment of Fig. I; ^ u light 70 to achieve the degree of redundancy, Further The entire power consumption is increased. [Invention] The LCD 2 = provides a %% sequence control method capable of increasing the brightness of the display. To achieve the above object, the lCD timing control method of the present invention is a source of time source of the light source of Li Jing, The LCD panel has a -U^ light source of different colors, and a light source of - primary color, and the second method of the LCD panel includes a step of sequentially turning on (t_on) the three primary color light sources. The method includes the steps of simultaneously controlling the plurality of color light sources at the same time. The time-field timing control method of the LCD panel of the present invention includes the steps of simultaneously turning on the plurality of color light sources simultaneously, so the time-field timing control method of the LCD panel is red, green, blue The opening time of the image is increased from the 1/3 image time to the frame time, thereby increasing the brightness of the lcd panel. [Embodiment] FIG. 4 is a block diagram showing the method for controlling the time domain timing of the light source of the LCD panel of the present invention. The LCD panel comprises three-dimensional matrix pixels, each pixel comprises three primary color light-emitting units, and the three primary color illuminations 201118834 unit comprises a red light a vertical light-emitting unit and a blue light-emitting unit. The LCD panel receives a vertical sync signal vsync and a horizontal sync signal Hsync. The vertical sync signal Vsync is enabled during each frame, and the horizontal sync signal is enabled. Hsync will have n triggers during each frame.
相較於先前技術,本發明將每個圖框期間切割為4 個子期間(sub一frame),除了利用3個子期間分別提供三 原色之光源外,還利用丨個子期間提供白色光源。且該 白色光源係利用同時一併開啟三原色之光源來組成。由 於每個子期間均需要相同數量的水平同步訊號Hsync 的觸發信號,因此水平同步訊號Hsync的頻率會被提高 至4倍,並定義為高頻水平同步訊號。至於如何將水平 同步訊號HSync的頻率提高為習知技藝,不在重複 明。 —本實施例之LCD面板之光源時場時序控制方法詞 於母個圖框顯示包含以下步驟。 步驟S02 :於第一子期間内’開啟第一原色發光琴 P源極驅動電路13a根據高頻水平同步訊號依序輪出 一維矩陣像素中每—行第—原色影像之控制資料。 步驟S04:於第二子期間内,開啟第二原色 源極驅動電路13a根據高頻水平同 二維矩陣像素中每—行第U影像之控制資料。 步驟S06 :於第二子如pq 一 、弟一千期間内,開啟第三原色發 兀’源極驅動電路13a根據高頻水平同步訊號依序 201118834 —維矩陣像素中每—行第三原色影像之控制資料。 :驟S08:於第四子期間内,同時一併開啟三原色 源極驅動電路13a根據高頻水平同步訊號依 Γ在:維矩陣像素中每-行白色影像之控制資料。亦 二在:面三個步驟中,僅開啟單一顏色之發光單元, —騾事同時-併開啟三個顏色之發光單元。由於 =色之發光單元同時開啟後,形成了白色光源,因 此源極驅動雷敌^ 1 2 L + 此時輸出二維矩陣像素中每一行 白色影像之控制資料。 方法1 5田顯不本發明之LCD面板之光源時場時序控制 /、以驅動顯*器之訊號的時序圖咖峋 : t源極驅動電路⑴產生輸出訊號—卜如 第::;广個圖框期間T-分成四等分,分別為 二:間:、第二子期間T2、第三子期間T3及第四 ^二 子期間了1時,紅色發光單元2U被 出I維矩2訊號^根據高頻水平同步信號依序輸 門TB# 中每一行之紅色成分資料;在第二子期 間A時,綠色發光單元22a被點亮,且輪 , 根據高頻水平同步_號庠 · ^ S〇Ut 行=色成分資料;在第三子期間T3時, 心被點亮’且輸出訊號s 發先早 ^ ^ , 很像间頻水平同步_ 喊依序輸出二維矩陣像素之每-行中藍色成分資料i 後:第四子期間丁4時,紅色發光單元21發光 …藍色發光單…時被點亮’且輪出= 201118834 維矩陣像素令 S°ut根據高頻水平同步信號依序輪出 每一行之白色成分資料。 另外,雖然在圖5實施例中,第 期間的光源顏色分別為R、G、B、w,々:=四子 序,使用者可根據設計上之需求逕行定義及此順 :間至第四子期間於時間上之順序。還有,::::子 :施例中’第-子期間至第四子期間分:為=; 二=Γ求調整不同的比例。例如R、w 2/7 9/7 7及4/7的圖框時間,或2/7、 2/7及1/7❾圖框時間等。但是當第—子期間至第 :期間的時間不相同時’高頻水平同步信號也要根據 =時間比1 列調整。亦即’當每-子期間的時間越 且 對應的南頻水平同步信號的頻率要越高。 圖6顯示圖5實施例之一圖框的多個子圖框。如圖 5及圖6所示’本實施例中於時間轴分割有紅色子圖框 kme、、綠色子圖框Gframe、藍色子圖框及白色子 =框Wframe。相較於習知技術,本實施例之顯示器— /加個白色子圖框Wframe(白色畫面)的影像顯示時 段。由圖3可知,先前技術中紅色、綠色及藍色顏色顯 不時間分別只有1/3的圖框時間Tframe。但相較於先前 技術,由圖5、圖6可知本發明之紅色、綠色及藍色各 顏色顯示時間長達丨/2的圖框時間Tframe。由於各顏色 之’4示時間增加,即增加每一像素中的該些發光單元被 點冗的時間’因此具有較高的顯示亮度。 201118834 本發明-實施例中於時間軸分割有紅色子圖框、綠 色子圖框、藍色子圖框及白色子圖框,於習知技術 多增加-個白色子圖框(白色晝面)的影像顯示時段,而 增加各顏色的顯示時間,亦即增加像素的該些發光單元 被點亮的時間,因此能夠增加顯示晝面的亮度。 【圖式簡單說明】 • 圖1顯示一習知液晶顯示器的示意圖。 圖2顯示一習知顯示器的示意圖。 圖3顯示用以驅動圖2顯示器之訊號的習知時序 圖。 圖4顯示本發明一實施例之顯示面板驅動方法的 流程圖。 圖5顯示本發明一實施例之顯示面板驅動方法其 用以驅動顯示器之訊號的時序圖。 • 圖6顯不圖5貫施例之一圖框的多個子圖框。 10 201118834 要元件符號說明】 液晶顯不ι§ 顯示器 顯示面板 顯示面板 資料線 資料線 源極驅動電路 源極驅動電路 像素 像素 紅色子像素 紅色發光單元 綠色子像素 綠色發光單元 藍色子像素 藍色發光單元Compared with the prior art, the present invention cuts each frame period into 4 sub-frames, in addition to providing a source of three primary colors for each of the three sub-periods, and also providing a white light source for the sub-period. And the white light source is composed of a light source that simultaneously turns on the three primary colors. Since the same number of horizontal sync signals Hsync trigger signals are required for each sub-period, the frequency of the horizontal sync signal Hsync is increased by a factor of four and is defined as a high frequency horizontal sync signal. As for how to increase the frequency of the horizontal synchronization signal HSync to a conventional skill, it is not repeated. - The light source time-field timing control method of the LCD panel of the present embodiment includes the following steps. Step S02: Turning on the first primary color illuminator in the first sub-period. The P source driving circuit 13a sequentially rotates the control data of each of the first-primary-primary color images in the one-dimensional matrix pixel according to the high-frequency horizontal synchronization signal. Step S04: In the second sub-period, the second primary color source driving circuit 13a is turned on according to the high-frequency level and the control data of each U-picture in the two-dimensional matrix pixel. Step S06: In the second sub-paragraph, such as pq, and one thousand, the third primary color is turned on. The source driving circuit 13a controls the third primary color image of each line in the matrix matrix according to the high frequency horizontal synchronization signal. data. Step S08: During the fourth sub-time period, the three primary colors are simultaneously turned on. The source driving circuit 13a controls the data of each line of the white image according to the high-frequency horizontal synchronization signal. In the three steps of the face, only the single-color light-emitting unit is turned on, and the three-color light-emitting unit is turned on at the same time. Since the light-emitting unit of the color is turned on at the same time, a white light source is formed, so the source drives the enemy 2 1 L L + at this time, the control data of each line of the white image in the two-dimensional matrix pixel is output. Method 1 5 shows the time-series timing control of the light source of the LCD panel of the present invention, and the timing diagram of the signal for driving the display device: t source drive circuit (1) generates an output signal - Bu Ru::; During the frame period T- is divided into four equal parts, respectively: two: between:, the second sub-period T2, the third sub-period T3, and the fourth-second sub-period, when the red light-emitting unit 2U is out of the I-dimensional moment 2 signal ^ According to the high-frequency horizontal synchronization signal, the red component data of each row in the gate TB# is sequentially input; in the second sub-period A, the green light-emitting unit 22a is illuminated, and the wheel is synchronized according to the high-frequency horizontal__··· 〇Ut line = color component data; in the third sub-period T3, the heart is illuminated 'and the output signal s is sent early ^ ^ , much like inter-frequency horizontal synchronization _ shouting sequentially output each line of the two-dimensional matrix pixel After the blue component data i: the fourth sub-period is 4, the red light-emitting unit 21 emits light... the blue light-emitting single... is illuminated 'and turns out = 201118834 dimensional matrix pixel makes S°ut according to the high-frequency horizontal synchronization signal The white component data of each row is sequentially rotated. In addition, in the embodiment of FIG. 5, the color of the light source in the first period is R, G, B, w, 々:= four sub-orders, and the user can define according to the design requirements and the following: The order of the sub-periods in time. Also, the ::::: child: in the example, the period from the first sub-period to the fourth sub-segment: is =; two = beg is to adjust the different ratios. For example, R, w 2/7 9/7 7 and 4/7 frame time, or 2/7, 2/7 and 1/7 frame time. However, when the time from the first sub-period to the first: is not the same, the high-frequency horizontal synchronizing signal is also adjusted according to the = time ratio of 1 column. That is, the frequency of the southerly horizontal synchronizing signal corresponding to the time of each sub-period is higher. Figure 6 shows a plurality of sub-frames of one of the frames of the embodiment of Figure 5. As shown in FIG. 5 and FIG. 6, in the present embodiment, a red sub-frame kme, a green sub-frame Gframe, a blue sub-frame, and a white sub-frame Wframe are divided on the time axis. Compared with the prior art, the display of the present embodiment - / plus a white sub-frame Wframe (white screen) image display period. As can be seen from Fig. 3, in the prior art, the red, green, and blue colors show only 1/3 of the frame time Tframe, respectively. However, compared with the prior art, it can be seen from Figs. 5 and 6 that the red, green and blue colors of the present invention display a frame time Tframe of up to 丨/2. Since the display time of each color is increased, that is, the time at which the light-emitting units in each pixel are redundant is increased, thus having a higher display brightness. 201118834 In the present invention, the red sub-frame, the green sub-frame, the blue sub-frame, and the white sub-frame are divided on the time axis, and the conventional technique is added - a white sub-frame (white surface) The image display period increases the display time of each color, that is, increases the time during which the light-emitting units of the pixel are illuminated, so that the brightness of the display surface can be increased. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a schematic diagram of a conventional liquid crystal display. Figure 2 shows a schematic diagram of a conventional display. Figure 3 shows a conventional timing diagram for driving the signal of the display of Figure 2. Fig. 4 is a flow chart showing a method of driving a display panel in accordance with an embodiment of the present invention. Fig. 5 is a timing chart showing a signal for driving a display of a display panel driving method according to an embodiment of the present invention. • Figure 6 shows a number of sub-frames in one of the frames of Figure 5. 10 201118834 Description of the symbol of the component] LCD display does not § Display panel display panel data line data line source drive circuit source drive circuit pixel pixel red sub-pixel red light unit green sub-pixel green light unit blue sub-pixel blue light unit