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TWI688808B - Display device and backlight driving method - Google Patents

Display device and backlight driving method Download PDF

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Publication number
TWI688808B
TWI688808B TW107144218A TW107144218A TWI688808B TW I688808 B TWI688808 B TW I688808B TW 107144218 A TW107144218 A TW 107144218A TW 107144218 A TW107144218 A TW 107144218A TW I688808 B TWI688808 B TW I688808B
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Taiwan
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backlight
control circuit
display mode
driving
display
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TW107144218A
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Chinese (zh)
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TW202022458A (en
Inventor
陳世軒
熊國佑
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友達光電股份有限公司
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Priority to TW107144218A priority Critical patent/TWI688808B/en
Priority to CN201910060995.3A priority patent/CN109493815B/en
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Publication of TW202022458A publication Critical patent/TW202022458A/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0613—The adjustment depending on the type of the information to be displayed
    • G09G2320/062—Adjustment of illumination source parameters

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

A display device includes a display panel, a backlight module and a backlight control circuit. The backlight module is electrically connected to the display module, and configured to provide a backlight to the display panel. The backlight module includes a plurality of backlight driving circuit. The backlight control circuit is electrically connected to the backlight module, and configured to control the backlight module operate in one of a first display mode and a second display mode.

Description

顯示裝置以及背光驅動方法 Display device and backlight driving method

本揭示文件有關一種顯示裝置以及背光驅動方法，尤指一種快速切換背光亮度的顯示裝置以及背光驅動方法。 This disclosure relates to a display device and a backlight driving method, in particular to a display device and a backlight driving method for quickly switching the brightness of the backlight.

現今的顯示面板大多採用被動發光技術，是以液晶的動作遮斷或開放背光模組的光線來顯示畫面，由於液晶的轉態需要時間，因此液晶的反應速度與背光模組的開啟時間，在顯示面板的技術領域中一直是個需要解決的問題。尤其在遊戲場景中或是在測試顯示面板時，可能會有需要將背光模組快速點亮的情況發生，然而，以往的背光驅動技術無法將背光模組快速點亮，因此無法達成需要的效果。 Most of today's display panels use passive light-emitting technology, which uses the action of liquid crystal to interrupt or open the light of the backlight module to display the picture. Since the transition of the liquid crystal takes time, the response speed of the liquid crystal and the turn-on time of the backlight module are The technical field of display panels has always been a problem to be solved. Especially in a game scene or when testing a display panel, it may happen that the backlight module needs to be quickly turned on. However, the conventional backlight driving technology cannot quickly turn on the backlight module, so the desired effect cannot be achieved .

本發明提供一種顯示裝置以及背光驅動方法，其主要係利用控制訊號控制背光驅動電路，在遮沒(blanking)時段內同時將多個背光驅動電路快速點亮，使得在動態畫面時產生的動態殘影(Motion blur)可以較不明 顯，並且可以在一段時間內提供高亮度的背光源，無須透過數位訊號依序控制背光驅動電路，達到在短時間內能夠快速點亮顯示面板並且解決動態殘影的功效。 The invention provides a display device and a backlight driving method, which mainly uses a control signal to control the backlight driving circuit, and simultaneously illuminates a plurality of backlight driving circuits at the same time in a blanking period, so that the dynamic residual generated during the dynamic picture Motion blur can be less clear It can display high-brightness backlight for a period of time without the need to sequentially control the backlight driving circuit through digital signals, which can quickly light up the display panel and solve the dynamic afterimage in a short time.

本案之第一態樣是在提供一種顯示裝置，顯示裝置包含顯示面板、背光模組以及背光控制電路。背光模組電性連接至顯示面板，用以提供背光源至顯示面板，更包含：複數個背光驅動電路。背光控制電路電性連接至背光模組，背光控制電路用以控制背光模組，操作在第一顯示模式以及第二顯示模式的中之一。其中，每一背光驅動電路皆與背光控制電路電性連接，當背光模組操作於第一顯示模式時，背光控制電路用以依序提供預設影像資料至背光驅動電路；當背光模組操作於第二顯示模式時，用以根據控制訊號，同時驅動背光驅動電路以提供背光源。 The first aspect of this case is to provide a display device including a display panel, a backlight module, and a backlight control circuit. The backlight module is electrically connected to the display panel to provide a backlight source to the display panel, and further includes: a plurality of backlight driving circuits. The backlight control circuit is electrically connected to the backlight module, and the backlight control circuit is used to control the backlight module to operate in one of the first display mode and the second display mode. Each backlight driving circuit is electrically connected to the backlight control circuit. When the backlight module operates in the first display mode, the backlight control circuit is used to sequentially provide preset image data to the backlight driving circuit; when the backlight module operates In the second display mode, it is used to simultaneously drive the backlight driving circuit to provide a backlight source according to the control signal.

本案之第二態樣是在提供一種背光驅動方法，適用於顯示裝置，顯示裝置包含顯示面板、背光模組以及背光控制電路，背光控制電路用以控制背光模組，操作在第一顯示模式以及第二顯示模式的中之一，背光驅動方法包含以下步驟：當背光模組操作於第一顯示模式時，背光控制電路用以依序提供預設影像資料至複數個背光驅動電路；以及當背光模組操作於第二顯示模式時，用以根據控制訊號，同時驅動背光驅動電路以提供背光源至顯示面板；其中，背光模組包含背光驅動電路，每一背光驅動電路皆與背光控制電路電性連接。 The second aspect of the case is to provide a backlight driving method suitable for a display device. The display device includes a display panel, a backlight module and a backlight control circuit. The backlight control circuit is used to control the backlight module and operate in the first display mode and In one of the second display modes, the backlight driving method includes the following steps: when the backlight module operates in the first display mode, the backlight control circuit is used to sequentially provide preset image data to the plurality of backlight driving circuits; and when the backlight When the module operates in the second display mode, it is used to simultaneously drive the backlight driving circuit to provide the backlight source to the display panel according to the control signal; wherein, the backlight module includes a backlight driving circuit, and each backlight driving circuit is electrically connected to the backlight control circuit Sexual connection.

本揭露之顯示裝置以及背光驅動方法可利用控 制訊號控制背光驅動電路，由於在遮沒(blanking)時段內同時將多個背光驅動電路快速點亮，使得在動態畫面時產生的動態殘影(Motion blur)可以較不明顯，並且可以在一段時間內提供高亮度的背光源，無須透過數位訊號依序控制背光驅動電路，達到在短時間內能夠快速點亮顯示面板並且解決動態殘影的功效。 The display device and backlight driving method of the present disclosure can be controlled by The control signal controls the backlight driving circuit. Since multiple backlight driving circuits are lit at the same time during the blanking period, the motion blur generated during the dynamic picture can be less obvious and can be in a period Provide a high-brightness backlight source within a period of time without the need to sequentially control the backlight driving circuit through digital signals, so as to quickly light up the display panel and solve the dynamic afterimage in a short time.

100:顯示裝置 100: display device

110:顯示面板 110: display panel

120:背光模組 120: backlight module

120-1~120-N‧‧‧背光驅動電路 120-1~120-N‧‧‧Backlight drive circuit

130‧‧‧背光控制電路 130‧‧‧Backlight control circuit

BL‧‧‧背光源 BL‧‧‧Backlight

CTL‧‧‧控制訊號 CTL‧‧‧Control signal

YDIO‧‧‧掃描訊號 YDIO‧‧‧scanning signal

BLD、BLD1~BLD4‧‧‧背光驅動訊號 BLD, BLD1~BLD4 ‧‧‧ backlight drive signal

B‧‧‧遮沒時段 B‧‧‧Blank period

200‧‧‧背光驅動方法 200‧‧‧Backlight drive method

G[180]、G[360]、G[540]、G[n]‧‧‧閘極線 G[180], G[360], G[540], G[n]‧‧‧Gate line

V1‧‧‧致能準位 V1‧‧‧Enable level

S210、S220‧‧‧步驟 S210, S220‧‧‧ steps

為讓揭示文件之上述和其他目的、特徵、優點與實施例能更明顯易懂，所附圖式之說明如下：第1圖為根據本揭示文件一實施例的顯示裝置的示意圖；第2圖為根據本揭示文件一實施例的背光驅動方法的流程圖；第3圖為根據本揭示文件一實施例的顯示裝置顯示的時序圖；以及第4圖為根據本揭示文件一實施例的顯示裝置顯示的時序圖。 In order to make the above and other objects, features, advantages and embodiments of the disclosed document more obvious and understandable, the drawings are described as follows: FIG. 1 is a schematic diagram of a display device according to an embodiment of the disclosed document; FIG. 2 Is a flowchart of a backlight driving method according to an embodiment of the present disclosure; FIG. 3 is a timing diagram of display of a display device according to an embodiment of the present disclosure; and FIG. 4 is a display device according to an embodiment of the present disclosure The timing diagram shown.

以下將配合相關圖式來說明本發明的實施例。在圖式中，相同的標號表示相同或類似的元件或方法流程。 The embodiments of the present invention will be described below in conjunction with related drawings. In the drawings, the same reference numerals indicate the same or similar elements or method flows.

請參閱第1圖。第1圖為根據本揭示文件一實施例的顯示裝置100的示意圖。如第1圖所繪示，顯示裝置100 包含顯示面板110、背光模組120以及背光控制電路130，背光模組120包含複數個背光驅動電路120-1~120-N。於一實施例中，背光模組120通常配置於相對於顯示面板110的下側(圖未示)的直下式(Direct-lit)背光模組，或側向入光式(Edge-lit)背光模組。背光模組120電性連接至顯示面板110，用以提供背光源BL至顯示面板110。背光控制電路130電性連接至背光模組120，用以控制背光模組120，操作在第一顯示模式以及第二顯示模式的中之一。 Please refer to Figure 1. FIG. 1 is a schematic diagram of a display device 100 according to an embodiment of the present disclosure. As shown in FIG. 1, the display device 100 It includes a display panel 110, a backlight module 120, and a backlight control circuit 130. The backlight module 120 includes a plurality of backlight driving circuits 120-1~120-N. In an embodiment, the backlight module 120 is generally disposed on a direct-lit backlight module or an edge-lit backlight relative to the lower side (not shown) of the display panel 110 Module. The backlight module 120 is electrically connected to the display panel 110 to provide the backlight BL to the display panel 110. The backlight control circuit 130 is electrically connected to the backlight module 120 to control the backlight module 120 to operate in one of the first display mode and the second display mode.

於一實施例中，每一背光驅動電路120-1~120-N皆與背光控制電路130電性連接，當背光模組120操作於第一顯示模式時，背光控制電路130用以依序提供預設影像資料至背光驅動電路120-1~120-N；當背光模組120操作於第二顯示模式時，用以根據控制訊號CTL，同時驅動背光驅動電路120-1~120-N以提供背光源BL。 In one embodiment, each backlight driving circuit 120-1~120-N is electrically connected to the backlight control circuit 130. When the backlight module 120 operates in the first display mode, the backlight control circuit 130 is used to provide Preset image data to the backlight driving circuits 120-1~120-N; when the backlight module 120 operates in the second display mode, it is used to drive the backlight driving circuits 120-1~120-N simultaneously to provide according to the control signal CTL Backlight BL.

請一併參閱第2圖及第3圖。第2圖為根據本揭示文件一實施例的背光驅動方法200的流程圖，第3圖為根據本揭示文件一實施例的顯示裝置100顯示的時序圖。背光驅動方法200適用於第1圖所示的顯示裝置100，如第2圖所繪示，背光驅動方法200首先執行步驟S210當背光模組120操作於第一顯示模式時，背光控制電路130用以依序提供預設影像資料至複數個背光驅動電路120-1~120-N。於一實施例中，預設影像資料係指每個背光驅動電路120-1~120-N會接收由背光控制電路130傳送的點亮資訊。由於背光驅動電路120-1~120-N彼此以串接方式連 接，因此點亮資訊必須由背光控制電路130依序傳送至背光驅動電路120-1~120-N。 Please refer to Figure 2 and Figure 3 together. FIG. 2 is a flowchart of a backlight driving method 200 according to an embodiment of the present disclosure, and FIG. 3 is a timing diagram of display by the display device 100 according to an embodiment of the present disclosure. The backlight driving method 200 is suitable for the display device 100 shown in FIG. 1. As shown in FIG. 2, the backlight driving method 200 first performs step S210. When the backlight module 120 operates in the first display mode, the backlight control circuit 130 uses In order to provide preset image data to a plurality of backlight driving circuits 120-1~120-N in sequence. In one embodiment, the preset image data means that each backlight driving circuit 120-1~120-N will receive the lighting information transmitted by the backlight control circuit 130. Since the backlight driving circuits 120-1~120-N are connected in series with each other Therefore, the lighting information must be sequentially transmitted by the backlight control circuit 130 to the backlight driving circuits 120-1~120-N.

承上述，點亮資訊可以是背光驅動電路120-1~120-N配合當前顯示畫面的致能區域，舉例而言，如果是黑夜中有月亮的顯示畫面，此時的點亮資訊即為致能對應於月亮區域的背光驅動電路120-1~120-N，禁能對應於黑夜區域的背光驅動電路120-1~120-N。於第一顯示模式時背光控制電路130用以提供第一驅動電流以驅動背光驅動電路120-1~120-N提供背光源BL。 According to the above, the lighting information can be the backlight driving circuit 120-1~120-N cooperate with the current display screen enable area, for example, if it is the display screen of the moon in the night, the lighting information at this time is the same The backlight drive circuits 120-1~120-N that can correspond to the moon area are disabled, and the backlight drive circuits 120-1~120-N that correspond to the night area are disabled. In the first display mode, the backlight control circuit 130 is used to provide a first driving current to drive the backlight driving circuits 120-1~120-N to provide the backlight BL.

如第3圖所示，YDIO代表顯示裝置100的掃描訊號，BLD代表背光控制電路130輸出的背光驅動訊號，背光驅動訊號BLD包含各自對應於背光驅動電路120-1~120-N的N個背光驅動訊號BLD1~BLDN。於一實施例中，以4個背光驅動電路120-1~120-4為例，分別具有各自的背光驅動訊號BLD1~BLD4。G[n]表示閘極線的數量，閘極線的數量與顯示面板的解析度有關，於此實施例中，以閘極線180條為一個致能區間，並且以閘極線G[180]的畫素的液晶轉態波型並搭配第一背光驅動電路120-1的背光驅動訊號BLD1為例，閘極線G[360]的畫素的液晶轉態波型並搭配第二背光驅動電路120-2的背光驅動訊號BLD2為例，閘極線G[540]的畫素的液晶轉態波型並搭配第三背光驅動電路120-3的背光驅動訊號BLD3為例，閘極線G[n]的畫素的液晶轉態波型並搭配第四背光驅動電路120-4的背光驅動訊號BLD4為例，但本揭露不限於此。 As shown in FIG. 3, YDIO represents the scan signal of the display device 100, and BLD represents the backlight driving signal output by the backlight control circuit 130. The backlight driving signal BLD includes N backlights each corresponding to the backlight driving circuits 120-1~120-N Drive signal BLD1~BLDN. In one embodiment, taking four backlight driving circuits 120-1~120-4 as an example, each having respective backlight driving signals BLD1~BLD4. G[n] represents the number of gate lines. The number of gate lines is related to the resolution of the display panel. In this embodiment, 180 gate lines are used as an enabling interval, and the gate line G[180 ] The pixel's liquid crystal transition wave pattern combined with the backlight drive signal BLD1 of the first backlight drive circuit 120-1 is taken as an example, the gate line G[360] pixel's liquid crystal transition wave pattern combined with the second backlight drive The backlight driving signal BLD2 of the circuit 120-2 is taken as an example, the liquid crystal transition wave pattern of the pixel of the gate line G[540] and the backlight driving signal BLD3 of the third backlight driving circuit 120-3 are taken as an example, the gate line G [n] The pixel's liquid crystal transition wave pattern and the backlight driving signal BLD4 of the fourth backlight driving circuit 120-4 are taken as an example, but the disclosure is not limited thereto.

接續上述實施例，於第一顯示模式時，在遮沒時段B內，由背光控制電路130輸出背光驅動訊號BLD1~BLD4以分別控制背光驅動電路120-1~120-4依序提供背光源BL。如第3圖所示，背光驅動電路120-3及120-4會在液晶轉態時點亮，因此在動態畫面時可能會看到動態殘影。 Following the above embodiment, in the first display mode, during the blanking period B, the backlight control circuit 130 outputs the backlight driving signals BLD1~BLD4 to control the backlight driving circuits 120-1~120-4 to sequentially provide the backlight BL . As shown in FIG. 3, the backlight driving circuits 120-3 and 120-4 will light up when the liquid crystal is in transition, so dynamic afterimages may be seen during the dynamic picture.

接著，請一併參閱第2圖及第4圖。第4圖為根據本揭示文件一實施例的顯示裝置100顯示的時序圖。如第4圖所示，CTL代表背光控制電路130提供的控制訊號，其餘符號與第3圖相同在此不再贅述。背光驅動方法200執行步驟S220當背光模組120操作於第二顯示模式時，用以根據控制訊號CTL，同時驅動背光驅動電路120-1~120-N以提供背光源BL至顯示面板110。接續上方實施例，於第二顯示模式時，在遮沒時段B內，背光控制電路130會將控制訊號CTL上拉至致能準位V1以同時控制背光驅動電路120-1~120-4提供背光源BL，由於遮沒時段B的時間非常短暫，為了迅速點亮背光驅動電路120-1~120-N，因此需要時序控制器(Timing controller)或系統板提供較高為準的電壓，因此致能準位V1的電壓可以實施為3.3V~5V。 Next, please refer to Figure 2 and Figure 4 together. FIG. 4 is a timing diagram of the display device 100 according to an embodiment of the present disclosure. As shown in FIG. 4, CTL represents the control signal provided by the backlight control circuit 130, and the remaining symbols are the same as those in FIG. 3 and will not be repeated here. The backlight driving method 200 executes step S220 when the backlight module 120 is operating in the second display mode to simultaneously drive the backlight driving circuits 120-1 to 120-N according to the control signal CTL to provide the backlight BL to the display panel 110. Following the above embodiment, in the second display mode, during the blanking period B, the backlight control circuit 130 will pull up the control signal CTL to the enable level V1 to simultaneously control the backlight driving circuits 120-1~120-4 to provide The backlight BL, because the time of the blanking period B is very short, in order to quickly light the backlight driving circuit 120-1~120-N, a timing controller (Timing controller) or system board is required to provide a higher voltage, so The voltage of the enabling level V1 can be implemented from 3.3V to 5V.

承上述，於第二顯示模式時背光控制電路130用以提供第二驅動電流以驅動背光驅動電路120-1~120-N提供背光源BL。其中，第二驅動電流大於第一驅動電流，第二驅動電流可以實施為第一驅動電流的N倍。接續前述實施例，由於第二顯示模試係操作於遮沒時段B，因此為了迅 速點亮背光驅動電路120-1~120-N，時序控制器或系統板需要提供高於第一驅動電流的第二驅動電流，使得背光驅動電路120-1~120-N可以在短時間內將背光源BL提升至高亮度。在此實施例中，高亮度可以是800~1000nits。 According to the above, in the second display mode, the backlight control circuit 130 is used to provide a second driving current to drive the backlight driving circuits 120-1 to 120-N to provide the backlight BL. The second driving current is greater than the first driving current, and the second driving current may be implemented as N times the first driving current. Following the foregoing embodiment, since the second display mode is operated during the blanking period B, in order to quickly Quickly turn on the backlight drive circuits 120-1~120-N. The timing controller or system board needs to provide a second drive current higher than the first drive current, so that the backlight drive circuits 120-1~120-N can be used in a short time Raise the backlight BL to high brightness. In this embodiment, the high brightness may be 800~1000nits.

於另一實施例中，可經由手動控制或是特殊顯示情況觸發第二顯示模式，舉例而言，顯示面板測試規格中具有高亮度模式的測試(PCHDR顯示質量認證規範)，在此測試中背光模組120需要維持約2秒的高亮度，於此情況下，便可經由背光控制電路130傳送控制訊號CTL至背光模組120操作在第二顯示模式下，提供高於第一驅動電流的N倍的第二驅動電流使得背光驅動電路120-1~120-N可以提供高亮度的背光源BL。 In another embodiment, the second display mode can be triggered by manual control or special display conditions. For example, a test with a high brightness mode (PCHDR display quality certification specification) in the display panel test specification, in this test, the backlight The module 120 needs to maintain high brightness for about 2 seconds. In this case, the control signal CTL can be sent to the backlight module 120 through the backlight control circuit 130 to operate in the second display mode, providing N higher than the first driving current The second driving current is doubled so that the backlight driving circuits 120-1~120-N can provide the backlight BL with high brightness.

承上述，特殊顯示情況可以是當顯示裝置在顯示遊戲畫面時，使用者可能觸發遊戲中的特殊道具(例如閃光彈)，使得背光模組120需要在極短的時間內提供高亮度的背光源BL，在此情況下便可經由背光控制電路130傳送控制訊號CTL至背光模組120操作在第二顯示模式下，提供高於第一驅動電流的N倍的第二驅動電流使得背光驅動電路120-1~120-N可以提供高亮度的背光源BL。 According to the above, the special display situation may be that when the display device is displaying the game screen, the user may trigger special props (such as flash bombs) in the game, so that the backlight module 120 needs to provide a high-brightness backlight source in a very short time BL, in this case, the control signal CTL can be transmitted to the backlight module 120 through the backlight control circuit 130 to operate in the second display mode, providing a second driving current N times higher than the first driving current so that the backlight driving circuit 120 -1~120-N can provide high brightness backlight BL.

綜上所述，本揭露之顯示裝置以及背光驅動方法可利用控制訊號控制背光驅動電路，由於在遮沒(blanking)時段內同時將多個背光驅動電路快速點亮，使得在動態畫面時產生的動態殘影(Motion blur)可以較不明顯，並且可以在一段時間內提供高亮度的背光源，無須透 過數位訊號依序控制背光驅動電路，達到在短時間內能夠快速點亮顯示面板並且解決動態殘影的功效。 In summary, the display device and the backlight driving method of the present disclosure can use the control signal to control the backlight driving circuit. Since a plurality of backlight driving circuits are simultaneously lit quickly during the blanking period, the Motion blur can be less noticeable, and it can provide a high-brightness backlight for a period of time without the need for transparency The digital signal is used to control the backlight driving circuit in sequence, so that the display panel can be quickly turned on in a short time and the effect of solving dynamic afterimages can be solved.

在說明書及申請專利範圍中使用了某些詞彙來指稱特定的元件。然而，所屬技術領域中具有通常知識者應可理解，同樣的元件可能會用不同的名詞來稱呼。說明書及申請專利範圍並不以名稱的差異做為區分元件的方式，而是以元件在功能上的差異來做為區分的基準。在說明書及申請專利範圍所提及的「包含」為開放式的用語，故應解釋成「包含但不限定於」。另外，「耦接」在此包含任何直接及間接的連接手段。因此，若文中描述第一元件耦接於第二元件，則代表第一元件可通過電性連接或無線傳輸、光學傳輸等信號連接方式而直接地連接於第二元件，或者通過其他元件或連接手段間接地電性或信號連接至該第二元件。 Certain words are used in the specification and patent application scope to refer to specific elements. However, those of ordinary skill in the art should understand that the same elements may be referred to by different nouns. The specification and the scope of patent application do not use the difference in names as a way to distinguish the components, but the difference in the functions of the components as the basis for distinguishing. "Inclusion" mentioned in the description and the scope of patent application is an open term, so it should be interpreted as "including but not limited to." In addition, "coupling" here includes any direct and indirect connection means. Therefore, if it is described that the first element is coupled to the second element, it means that the first element can be directly connected to the second element through electrical connection, wireless transmission, optical transmission, or other signal connection, or through other elements or connections The means is indirectly electrically or signally connected to the second element.

另外，除非說明書中特別指明，否則任何單數格的用語都同時包含複數格的涵義。 In addition, unless otherwise specified in the description, any singular case also includes the meaning of the plural case.

以上僅為本發明的較佳實施例，凡依本發明請求項所做的均等變化與修飾，皆應屬本發明的涵蓋範圍。 The above are only preferred embodiments of the present invention, and any equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

100‧‧‧顯示裝置 100‧‧‧Display device

110‧‧‧顯示面板 110‧‧‧Display panel

120‧‧‧背光模組 120‧‧‧Backlight module

120-1~120-N‧‧‧背光驅動電路 120-1~120-N‧‧‧Backlight drive circuit

130‧‧‧背光控制電路 130‧‧‧Backlight control circuit

BL‧‧‧背光源 BL‧‧‧Backlight

CTL‧‧‧控制訊號 CTL‧‧‧Control signal

BLD‧‧‧背光驅動訊號 BLD‧‧‧Backlight drive signal

Claims (8)

一種顯示裝置，包含：一顯示面板；一背光模組，電性連接至該顯示面板，用以提供一背光源至該顯示面板，更包含：複數個背光驅動電路；以及一背光控制電路，電性連接至該背光模組，用以控制該背光模組，操作在一第一顯示模式以及一第二顯示模式的中之一，其中，該第二顯示模式係操作於一遮沒(blanking)時段；其中，每一該些背光驅動電路皆與該背光控制電路電性連接，當該背光模組操作於該第一顯示模式時，該背光控制電路用以依序提供一預設影像資料至該些背光驅動電路；當該背光模組操作於該第二顯示模式時，用以根據一控制訊號，同時驅動該些背光驅動電路以提供該背光源。 A display device includes: a display panel; a backlight module, electrically connected to the display panel, for providing a backlight source to the display panel, and further includes: a plurality of backlight driving circuits; and a backlight control circuit, electrically Is connected to the backlight module for controlling the backlight module to operate in one of a first display mode and a second display mode, wherein the second display mode is operated in a blanking Period; wherein, each of the backlight driving circuits is electrically connected to the backlight control circuit, and when the backlight module operates in the first display mode, the backlight control circuit is used to sequentially provide a preset image data to The backlight driving circuits; when the backlight module operates in the second display mode, it is used to simultaneously drive the backlight driving circuits according to a control signal to provide the backlight source. 如請求項1的顯示裝置，其中，該控制訊號於該遮沒時段內由該背光控制電路上拉至一致能準位。 The display device according to claim 1, wherein the control signal is pulled up to a uniform energy level by the backlight control circuit during the blanking period. 如請求項2的顯示裝置，其中，於該第一顯示模式時該背光控制電路用以提供一第一驅動電流以驅動該些背光驅動電路提供該背光源，於該第二顯示模式時該背光控制電路用以提供一第二驅動電流以驅動該些 背光驅動電路提供該背光源。 The display device of claim 2, wherein the backlight control circuit is used to provide a first driving current to drive the backlight driving circuits to provide the backlight source during the first display mode, and the backlight during the second display mode The control circuit is used to provide a second driving current to drive the two The backlight driving circuit provides the backlight source. 如請求項3的顯示裝置，其中，該第二驅動電流大於該第一驅動電流。 The display device according to claim 3, wherein the second driving current is greater than the first driving current. 一種背光驅動方法，適用於一顯示裝置，該顯示裝置包含一顯示面板、一背光模組以及一背光控制電路，該背光控制電路用以控制該背光模組，操作在一第一顯示模式以及一第二顯示模式的中之一，該背光驅動方法包含：當該背光模組操作於該第一顯示模式時，該背光控制電路用以依序提供一預設影像資料至複數個背光驅動電路；以及當該背光模組操作於該第二顯示模式時，用以根據一控制訊號，同時驅動該些背光驅動電路以提供一背光源至該顯示面板；其中，該背光模組包含該些背光驅動電路，每一該些背光驅動電路皆與該背光控制電路電性連接，其中，該第二顯示模式係操作於一遮沒(blanking)時段。 A backlight driving method is suitable for a display device including a display panel, a backlight module and a backlight control circuit. The backlight control circuit is used to control the backlight module to operate in a first display mode and a In one of the second display modes, the backlight driving method includes: when the backlight module operates in the first display mode, the backlight control circuit is used to sequentially provide a predetermined image data to a plurality of backlight driving circuits; And when the backlight module operates in the second display mode, it is used to simultaneously drive the backlight drive circuits to provide a backlight source to the display panel according to a control signal; wherein the backlight module includes the backlight drives Circuit, each of the backlight driving circuits is electrically connected to the backlight control circuit, wherein the second display mode is operated in a blanking period. 如請求項5所述的背光驅動方法，其中，該控制訊號於該遮沒時段內由該背光控制電路上拉至一致能準位。 The backlight driving method according to claim 5, wherein the control signal is pulled up to a uniform energy level by the backlight control circuit within the blanking period. 如請求項6所述的背光驅動方法，其中，於該第一顯示模式時該背光控制電路用以提供一第一驅動電流以驅動該些背光驅動電路提供該背光源，於該第二顯示模式時該背光控制電路用以提供一第二驅動電流以驅動該些背光驅動電路提供該背光源。 The backlight driving method according to claim 6, wherein, in the first display mode, the backlight control circuit is used to provide a first driving current to drive the backlight driving circuits to provide the backlight source in the second display mode The backlight control circuit is used to provide a second driving current to drive the backlight driving circuits to provide the backlight source. 如請求項7所述的背光驅動方法，其中，該第二驅動電流大於該第一驅動電流。 The backlight driving method according to claim 7, wherein the second driving current is greater than the first driving current.
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