TWI723669B - Backlight device and driving method - Google Patents

Backlight device and driving method Download PDF

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TWI723669B
TWI723669B TW108144711A TW108144711A TWI723669B TW I723669 B TWI723669 B TW I723669B TW 108144711 A TW108144711 A TW 108144711A TW 108144711 A TW108144711 A TW 108144711A TW I723669 B TWI723669 B TW I723669B
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driving
light emitting
control circuit
driving signal
emitting devices
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TW108144711A
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TW202123209A (en
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謝雨哲
沈子嵐
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新唐科技股份有限公司
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Priority to CN201911376446.3A priority patent/CN112927655B/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

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)

Abstract

A backlight device and a driving method are provided. The backlight device includes first light emitting devices, second light emitting devices, first driving circuits, second driving circuits and a controller. The first driving circuits are serially connected, respectively corresponds to the first light emitting devices, receive a first driving signal, and respectively and sequentially drives the first light emitting devices according to the first driving signal. The second driving circuits are serially connected, respectively corresponds to the second light emitting devices, receive a second driving signal, and respectively and sequentially drives the second light emitting devices according to the second driving signal. The controller, coupled to the first driving circuit and the second driving circuits, generates the first driving signal and the second driving signal according to a standard clock signal, wherein the first driving signal and the second driving signal are synchronized.

Description

背光裝置及驅動方法Backlight device and driving method

本發明是有關於一種電子裝置，且特別是有關於一種背光裝置。The present invention relates to an electronic device, and particularly relates to a backlight device.

在現今使用者對於顯示裝置的需求正不斷成長之下，顯示裝置的技術正不斷地進步以因應使用者對於顯示品質的需求。進一步地，顯示裝置中背光裝置的效能及品質更會對顯示裝置的顯示品質產生關鍵的影響。Nowadays, the user's demand for the display device is constantly growing, and the technology of the display device is constantly improving to meet the user's demand for display quality. Furthermore, the performance and quality of the backlight device in the display device will have a critical impact on the display quality of the display device.

現有技術中，背光裝置中的驅動器會透過以菊花鍊（Daisy Chain）的方式進行連接來驅動光發射裝置。但當背光裝置中的光發射裝置數量不斷提升的時候，會導致傳遞驅動信號的延遲增加，造成背光裝置整體的刷新率下降，造成顯示裝置的畫面順暢度下降，進一步破壞使用者的觀賞感受。In the prior art, the driver in the backlight device drives the light emitting device by connecting in a daisy chain (Daisy Chain) manner. However, as the number of light emitting devices in the backlight device continues to increase, the delay in transmitting the driving signal will increase, resulting in a decrease in the overall refresh rate of the backlight device, resulting in a decrease in the smoothness of the display device, and further damaging the user's viewing experience.

本發明提供了一種背光裝置及驅動方法，降低背光裝置中驅動信號的延遲且提升背光裝置的刷新率。The present invention provides a backlight device and a driving method, which reduce the delay of driving signals in the backlight device and improve the refresh rate of the backlight device.

本發明提供了一種背光裝置，包括多個第一光發射裝置、多個第二光發射裝置、多個第一驅動電路、多個第二驅動電路及控制器。第一驅動電路會相互串聯耦接，分別對應第一光發射裝置，接收第一驅動信號，並基於第一驅動信號以依序分別驅動第一光發射裝置。第二驅動電路會相互串聯耦接，分別對應第二光發射裝置，接收第二驅動信號，並基於第二驅動信號以依序分別驅動第二光發射裝置。控制器耦接第一驅動電路以及第二驅動電路，依據基準時脈信號以產生第一驅動信號以及第二驅動信號。其中第一驅動信號與第二驅動信號同步。The present invention provides a backlight device, which includes a plurality of first light emitting devices, a plurality of second light emitting devices, a plurality of first driving circuits, a plurality of second driving circuits, and a controller. The first driving circuits are coupled in series with each other, respectively correspond to the first light emitting devices, receive the first driving signal, and respectively drive the first light emitting devices in sequence based on the first driving signal. The second driving circuits are coupled in series with each other, respectively correspond to the second light emitting devices, receive the second driving signal, and respectively drive the second light emitting devices in sequence based on the second driving signal. The controller is coupled to the first driving circuit and the second driving circuit, and generates the first driving signal and the second driving signal according to the reference clock signal. The first driving signal is synchronized with the second driving signal.

本發明另提供一種驅動方法，適用於背光裝置，背光裝置包含第一光發射裝置以及第二光發射裝置。驅動方法包括依據基準時脈信號提供第一驅動信號以及第二驅動信號。驅動方法另包括透過相互串聯耦接的第一驅動電路，以基於第一驅動信號依序分別驅動第一光發射裝置，第一驅動電路分別對應第一光發射裝置。驅動方法另包括透過相互串聯耦接的第二驅動電路，以基於第二驅動信號依序分別驅動第二光發射裝置，第二驅動電路分別對應第二光發射裝置。其中第一驅動信號與該第二驅動信號同步。The present invention also provides a driving method suitable for a backlight device. The backlight device includes a first light emitting device and a second light emitting device. The driving method includes providing a first driving signal and a second driving signal according to a reference clock signal. The driving method further includes driving the first light emitting devices sequentially based on the first driving signal through the first driving circuits coupled in series with each other, and the first driving circuits respectively correspond to the first light emitting devices. The driving method further includes driving the second light emitting devices in sequence based on the second driving signal through the second driving circuits coupled in series with each other, and the second driving circuits respectively correspond to the second light emitting devices. The first driving signal is synchronized with the second driving signal.

基於上述，本發明提供的背光裝置及驅動方法可降低第一驅動電路及第二驅動電路串聯的連接數量，且同步第一驅動信號及第二驅動信號，因此有效降低背光裝置中驅動信號的延遲且提升背光裝置的刷新率。Based on the above, the backlight device and driving method provided by the present invention can reduce the number of serial connections of the first driving circuit and the second driving circuit, and synchronize the first driving signal and the second driving signal, thereby effectively reducing the delay of the driving signal in the backlight device And improve the refresh rate of the backlight device.

請參考圖1，圖1為本發明一實施例中一背光裝置1的示意圖。如圖1所示，背光裝置1具有背光面板10、驅動器11及控制器12。背光面板10中具有多個第一光發射裝置10a及第二光發射裝置10b，可在背光面板10的不同區域進行發光。驅動器11具有多個第一驅動電路11a及多個第二驅動電路11b。第一驅動電路11a互相串聯且每個第一驅動電路11a分別對應於每個第一光發射裝置10a以進行驅動。第二驅動電路11b互相串聯且每個第二驅動電路11b分別對應於每個第二光發射裝置10b以進行驅動。控制器12具有第一控制電路12a及第二控制電路12b。其中，第一控制電路12a可產生第一驅動信號Vd1至第一驅動電路11a的串聯結構，第二控制電路12b可產生第二驅動信號Vd2至第二驅動電路11b的串聯結構。進一步，控制器12中另包含有內部導線120，使第一控制電路12a可透過內部導線120提供基準時脈信號Clk至第二控制電路12b，以同步第一驅動信號Vd1及第二驅動信號Vd2。Please refer to FIG. 1, which is a schematic diagram of a backlight device 1 in an embodiment of the present invention. As shown in FIG. 1, the backlight device 1 has a backlight panel 10, a driver 11 and a controller 12. The backlight panel 10 has a plurality of first light emitting devices 10 a and second light emitting devices 10 b, which can emit light in different areas of the backlight panel 10. The driver 11 has a plurality of first driving circuits 11a and a plurality of second driving circuits 11b. The first driving circuits 11a are connected in series with each other, and each first driving circuit 11a is respectively corresponding to each first light emitting device 10a for driving. The second driving circuits 11b are connected in series with each other, and each second driving circuit 11b corresponds to each second light emitting device 10b for driving. The controller 12 has a first control circuit 12a and a second control circuit 12b. The first control circuit 12a can generate a series structure of the first driving signal Vd1 to the first driving circuit 11a, and the second control circuit 12b can generate a series structure of the second driving signal Vd2 to the second driving circuit 11b. Furthermore, the controller 12 further includes an internal wire 120, so that the first control circuit 12a can provide the reference clock signal Clk to the second control circuit 12b through the internal wire 120 to synchronize the first driving signal Vd1 and the second driving signal Vd2 .

詳細而言，第一控制電路12a及第二控制電路12b是整合地設置在控制器12的晶片中。第一控制電路12a可具有串列周邊介面（Serial Peripheral Interface，SPI），第二控制電路12b同樣可具有串列周邊介面，並同步地傳遞第一驅動信號Vd1及第二驅動信號Vd2至第一驅動電路11a的串聯結構及第二驅動電路11b的串聯結構。在一實施例中，第一光發射裝置10a及第二光發射裝置10b可為發光二極體串，依據第一驅動電路11a及第二驅動電路11b的驅動來進行發光。因此，依據第一驅動電路11a及第二驅動電路11b依序傳遞第一驅動信號Vd1及第二驅動信號Vd2，第一光發射裝置10a及第二光發射裝置10b可依序被驅動。在本實施例中，為了同步第一驅動信號Vd1及第二驅動信號Vd2，第一控制電路12a可為主（Master）控制電路，且第二控制電路12b可為從屬（Slave）控制電路，由主控制電路12a透過發起資料輸出，且透過內部導線120提供基準時脈信號Clk以驅動從屬控制電路，因而同步第一驅動信號Vd1及第二驅動信號Vd2，以及同步第一光發射裝置10a及第二光發射裝置10b的操作。In detail, the first control circuit 12a and the second control circuit 12b are integrated in the chip of the controller 12. The first control circuit 12a may have a serial peripheral interface (Serial Peripheral Interface, SPI), and the second control circuit 12b may also have a serial peripheral interface, and synchronously transmit the first driving signal Vd1 and the second driving signal Vd2 to the first The series structure of the driving circuit 11a and the series structure of the second driving circuit 11b. In an embodiment, the first light emitting device 10a and the second light emitting device 10b may be light emitting diode strings, which emit light according to the driving of the first driving circuit 11a and the second driving circuit 11b. Therefore, according to the first driving circuit 11a and the second driving circuit 11b to sequentially transmit the first driving signal Vd1 and the second driving signal Vd2, the first light emitting device 10a and the second light emitting device 10b can be driven in sequence. In this embodiment, in order to synchronize the first driving signal Vd1 and the second driving signal Vd2, the first control circuit 12a can be a master control circuit, and the second control circuit 12b can be a slave control circuit, The master control circuit 12a initiates data output and provides a reference clock signal Clk through the internal wire 120 to drive the slave control circuit, thereby synchronizing the first driving signal Vd1 and the second driving signal Vd2, and synchronizing the first light emitting device 10a and the first light emitting device 10a and the first light emitting device 10a. 2. Operation of the light emitting device 10b.

當然，第一控制電路12a及第二控制電路12b也可透過其他種類的串列傳輸介面來進行第一驅動信號Vd1及第二驅動信號Vd2的傳輸動作，沒有一定的限制。Of course, the first control circuit 12a and the second control circuit 12b can also transmit the first driving signal Vd1 and the second driving signal Vd2 through other types of serial transmission interfaces, and there is no certain limit.

因此，背光裝置1可透過控制器12中的第一控制電路12a及第二控制電路12b產生同步的第一驅動信號Vd1及第二驅動信號Vd2，且透過較短的第一驅動電路11a的串列及第二驅動電路11b的串列來驅動第一光發射裝置10a及第二光發射裝置10b，因而降低背光裝置1的延遲且提升背光裝置1的刷新率。Therefore, the backlight device 1 can generate the synchronized first driving signal Vd1 and the second driving signal Vd2 through the first control circuit 12a and the second control circuit 12b in the controller 12, and through the shorter series of the first driving circuit 11a. The series of columns and the second driving circuit 11b drive the first light emitting device 10a and the second light emitting device 10b, thereby reducing the delay of the backlight device 1 and increasing the refresh rate of the backlight device 1.

請參考圖2，圖2為本發明一實施例中一背光裝置2的示意圖。如圖2所示，背光裝置2相似於圖1所繪示的背光裝置1，背光裝置2與背光裝置1的差異在於，背光裝置2中，基準時脈信號Clk是第一控制電路22a及第二控制電路22b透過第一引腳端P1、外部導線221及第二引腳端P2來進行傳遞。Please refer to FIG. 2, which is a schematic diagram of a backlight device 2 in an embodiment of the present invention. As shown in FIG. 2, the backlight device 2 is similar to the backlight device 1 depicted in FIG. 1. The difference between the backlight device 2 and the backlight device 1 is that in the backlight device 2, the reference clock signal Clk is the first control circuit 22a and the second control circuit 22a. The second control circuit 22b transmits through the first pin terminal P1, the external wire 221, and the second pin terminal P2.

詳細而言，背光裝置2的第一控制電路22a及第二控制電路22b是整合地設置在控制器22的晶片中。第一控制電路22a耦接於控制器22的第一引腳端P1，且第二控制電路12b耦接於控制器22的第二引腳端P2。外部導線221於控制器22的外部連接於第一引腳端P1及第二引腳端P2之間，故第一控制電路22a可透過外部導線221傳遞基準時脈信號Clk至第二控制電路22b，因而同步第一驅動信號Vd1及第二驅動信號Vd2，以及同步第一光發射裝置10a及第二光發射裝置10b的操作。In detail, the first control circuit 22a and the second control circuit 22b of the backlight device 2 are integrally provided in the chip of the controller 22. The first control circuit 22 a is coupled to the first pin terminal P1 of the controller 22, and the second control circuit 12 b is coupled to the second pin terminal P2 of the controller 22. The external wire 221 is connected between the first pin terminal P1 and the second pin terminal P2 outside the controller 22, so the first control circuit 22a can transmit the reference clock signal Clk to the second control circuit 22b through the external wire 221 Therefore, the first driving signal Vd1 and the second driving signal Vd2 are synchronized, and the operations of the first light emitting device 10a and the second light emitting device 10b are synchronized.

除了透過主從式的驅動方式來驅動第一控制電路及第二控制電路之外，背光裝置的控制器亦可透過其他方式來同步第一控制電路及第二控制電路的操作。請參考圖3，圖3為本發明一實施例中一背光裝置3的示意圖。如圖3所示，背光裝置3相似於圖1所繪示的背光裝置1，背光裝置3與背光裝置1的差異在於，背光裝置3的控制器32另包含有核心電路322，控制器32可透過核心電路322提供的基準時脈信號Clk傳遞至第一控制電路32a及第二控制電路32b，因而同步第一驅動信號Vd1及第二驅動信號Vd2，以及同步第一光發射裝置10a及第二光發射裝置10b的操作。In addition to driving the first control circuit and the second control circuit through a master-slave driving method, the controller of the backlight device can also synchronize the operations of the first control circuit and the second control circuit through other methods. Please refer to FIG. 3, which is a schematic diagram of a backlight device 3 in an embodiment of the present invention. As shown in FIG. 3, the backlight device 3 is similar to the backlight device 1 depicted in FIG. 1. The difference between the backlight device 3 and the backlight device 1 is that the controller 32 of the backlight device 3 further includes a core circuit 322, and the controller 32 can The reference clock signal Clk provided by the core circuit 322 is transmitted to the first control circuit 32a and the second control circuit 32b, thereby synchronizing the first driving signal Vd1 and the second driving signal Vd2, and synchronizing the first light emitting device 10a and the second light emitting device 10a and the second control circuit 32b. Operation of the light emitting device 10b.

因此，背光裝置3相異於主從式的驅動方式，其利用核心電路122提供基準時脈信號Clk至第一控制電路32a及第二控制電路32b，使第一控制電路32a及第二控制電路32b可同步地提供第一驅動信號Vd1及第二驅動信號Vd2至第一驅動電路11a及第二驅動電路11b，降低背光面板10的延遲。Therefore, the backlight device 3 is different from the master-slave driving mode, which uses the core circuit 122 to provide the reference clock signal Clk to the first control circuit 32a and the second control circuit 32b, so that the first control circuit 32a and the second control circuit 32b can synchronously provide the first driving signal Vd1 and the second driving signal Vd2 to the first driving circuit 11a and the second driving circuit 11b, thereby reducing the delay of the backlight panel 10.

此外，背光裝置中控制電路的數量亦不僅限於兩個，所屬領域具通常知識者當可依照不同的設計概念及使用者需求據以變化。舉例而言，請參考圖4，圖4為本發明一實施例中一背光裝置4的示意圖。背光裝置4具有第一光發射裝置40a、第二光發射裝置40b、第三光發射裝置40c、第四光發射裝置40d，分別在背光面板40上的不同區域進行發光。驅動器41具有第一驅動電路41a、第二驅動電路41b、第三驅動電路41c及第四驅動電路41d。第一驅動電路41a、第二驅動電路41b、第三驅動電路41c及第四驅動電路41d會形成四條串列，四條串列會分別用來驅動第一光發射裝置40a、第二光發射裝置40b、第三光發射裝置40c、第四光發射裝置40d。控制器422具有第一控制電路42a、第二控制電路42b、第三控制電路42c及第四控制電路42d，分別驅動第一驅動電路41a、第二驅動電路41b、第三驅動電路41c及第四驅動電路41d所形成的四條串列。In addition, the number of control circuits in the backlight device is not limited to two, and those with ordinary knowledge in the field can change it according to different design concepts and user needs. For example, please refer to FIG. 4, which is a schematic diagram of a backlight device 4 in an embodiment of the present invention. The backlight device 4 has a first light emitting device 40a, a second light emitting device 40b, a third light emitting device 40c, and a fourth light emitting device 40d, which emit light in different areas on the backlight panel 40, respectively. The driver 41 has a first drive circuit 41a, a second drive circuit 41b, a third drive circuit 41c, and a fourth drive circuit 41d. The first driving circuit 41a, the second driving circuit 41b, the third driving circuit 41c, and the fourth driving circuit 41d form four series, and the four series are used to drive the first light emitting device 40a and the second light emitting device 40b, respectively. , The third light emitting device 40c, the fourth light emitting device 40d. The controller 422 has a first control circuit 42a, a second control circuit 42b, a third control circuit 42c, and a fourth control circuit 42d, which respectively drive the first drive circuit 41a, the second drive circuit 41b, the third drive circuit 41c, and the fourth Four series formed by the driving circuit 41d.

因此，透過背光裝置4的控制器42的第一控制電路42a、第二控制電路42b、第三控制電路42c及第四控制電路42d形成的四條串列，背光面板40中的光發射裝置依據其耦接關係或是位置可被分為多個群組來進行驅動，有效降低串列中驅動電路的串聯數量，進而降低整體背光裝置的信號延遲。Therefore, through the four series formed by the first control circuit 42a, the second control circuit 42b, the third control circuit 42c, and the fourth control circuit 42d of the controller 42 of the backlight device 4, the light emitting device in the backlight panel 40 is based on it The coupling relationship or the position can be divided into a plurality of groups for driving, which effectively reduces the number of driving circuits connected in series in the series, thereby reducing the signal delay of the overall backlight device.

接著請參考圖5，圖5為本發明一實施例中一驅動方法的流程圖。關於本發明上述篇幅所記載的背光裝置的操作，可歸納為圖5所繪示的流程圖。Please refer to FIG. 5, which is a flowchart of a driving method in an embodiment of the present invention. The operation of the backlight device described in the foregoing paragraphs of the present invention can be summarized as a flowchart shown in FIG. 5.

在步驟500中，依據基準時脈信號，第一驅動信號及第二驅動信號會被提供。詳細而言，背光裝置中的控制器會依據基準時脈信號來同步第一驅動信號及第二驅動信號，並將經同步的第一驅動信號及第二驅動信號提供至驅動器。在步驟501中，依據第一驅動信號分別依序驅動第一光發射裝置。詳細而言，背光裝置的驅動器中，多個串聯連接的第一驅動電路所形成的串列會接收到第一驅動信號，第一驅動電路依據第一驅動信號會依序分別驅動相對應的第一光發射裝置。在步驟502中，依據第二驅動信號分別依序驅動第二光發射裝置。詳細而言，背光裝置的驅動器中，多個串聯連接的第二驅動電路所形成的串列會接收到第二驅動信號，第二驅動電路依據第二驅動信號會依序分別驅動相對應的第二光發射裝置。在步驟501、502中，由於第一驅動信號及第二驅動信號已透過控制器同步，故第一驅動電路及第二驅動電路可分別依據第一驅動信號及第二驅動信號，依照第一驅動電路及第二驅動電路的串接順序同步地驅動相對應的第一光發射裝置及第二光發射裝置。In step 500, according to the reference clock signal, the first driving signal and the second driving signal are provided. In detail, the controller in the backlight device synchronizes the first driving signal and the second driving signal according to the reference clock signal, and provides the synchronized first driving signal and the second driving signal to the driver. In step 501, the first light emitting devices are driven in sequence according to the first driving signal. In detail, in the driver of the backlight device, a series formed by a plurality of first driving circuits connected in series will receive the first driving signal, and the first driving circuit will sequentially drive the corresponding first driving circuit according to the first driving signal. A light emitting device. In step 502, the second light emitting devices are driven in sequence according to the second driving signal. In detail, in the driver of the backlight device, a series formed by a plurality of second driving circuits connected in series will receive the second driving signal, and the second driving circuit will sequentially drive the corresponding first driving circuit according to the second driving signal. 2. Light emitting device. In steps 501 and 502, since the first driving signal and the second driving signal have been synchronized through the controller, the first driving circuit and the second driving circuit can be based on the first driving signal and the second driving signal, respectively, according to the first driving signal. The serial connection sequence of the circuit and the second driving circuit synchronously drives the corresponding first light emitting device and the second light emitting device.

綜上所述，背光裝置的控制器依據基準時脈信號可同步第一驅動信號及第二驅動信號，使串聯連接的第一驅動電路及第二驅動電路可依序驅動相對應的第一光發射裝置及第二光發射裝置，因此降低背光裝置的延遲且提升背光裝置的刷新率。In summary, the controller of the backlight device can synchronize the first driving signal and the second driving signal according to the reference clock signal, so that the first driving circuit and the second driving circuit connected in series can sequentially drive the corresponding first light. The emitting device and the second light emitting device thus reduce the delay of the backlight device and increase the refresh rate of the backlight device.

1、2、3、4:背光裝置 10:背光面板 10a、40a:第一光發射裝置 10b、40b:第二光發射裝置 11、41:驅動器 11a、41a:第一驅動電路 11b、41b:第二驅動電路 12、22、32、42:控制器 12a、22a、32a、42a:第一控制電路 12b、22b、32b、42b:第二控制電路 120:內部導線 221:外部導線 322、422:核心電路 40c:第三光發射裝置 40d:第四光發射裝置 41c:第三驅動電路 41d:第四驅動電路 42c:第三控制電路 42d:第四控制電路 500、501、502:步驟 Clk:基準時脈信號 P1:第一引腳端 P2:第二引腳端 Vd1:第一驅動信號 Vd2:第二驅動信號 Vd3:第三驅動信號 Vd4:第四驅動信號 1, 2, 3, 4: Backlight device 10: Backlight panel 10a, 40a: the first light emitting device 10b, 40b: second light emitting device 11, 41: drive 11a, 41a: the first drive circuit 11b, 41b: second drive circuit 12, 22, 32, 42: Controller 12a, 22a, 32a, 42a: the first control circuit 12b, 22b, 32b, 42b: second control circuit 120: internal wire 221: external wire 322, 422: core circuit 40c: third light emitting device 40d: Fourth light emitting device 41c: third drive circuit 41d: Fourth drive circuit 42c: third control circuit 42d: Fourth control circuit 500, 501, 502: steps Clk: reference clock signal P1: The first pin terminal P2: The second pin terminal Vd1: first drive signal Vd2: second drive signal Vd3: third drive signal Vd4: Fourth drive signal

圖1為本發明一實施例中一背光裝置的示意圖。 圖2為本發明一實施例中一背光裝置的示意圖。 圖3為本發明一實施例中一背光裝置的示意圖。 圖4為本發明一實施例中一背光裝置的示意圖。 圖5為本發明一實施例中一驅動方法的流程圖。 FIG. 1 is a schematic diagram of a backlight device in an embodiment of the invention. FIG. 2 is a schematic diagram of a backlight device in an embodiment of the invention. FIG. 3 is a schematic diagram of a backlight device in an embodiment of the invention. FIG. 4 is a schematic diagram of a backlight device in an embodiment of the invention. FIG. 5 is a flowchart of a driving method in an embodiment of the invention.

1:背光裝置 1: Backlight device

10:背光面板 10: Backlight panel

10a:第一光發射裝置 10a: The first light emitting device

10b:第二光發射裝置 10b: Second light emitting device

11:驅動器 11: drive

11a:第一驅動電路 11a: The first drive circuit

11b:第二驅動電路 11b: The second drive circuit

12:控制器 12: Controller

12a:第一控制電路 12a: The first control circuit

12b:第二控制電路 12b: Second control circuit

120:內部導線 120: internal wire

Clk:基準時脈信號 Clk: reference clock signal

Vd1:第一驅動信號 Vd1: first drive signal

Vd2:第二驅動信號 Vd2: second drive signal

Claims (10)

一種背光裝置，包括：多個第一光發射裝置；多個第二光發射裝置；多個第一驅動電路，相互串聯耦接，分別對應該些第一光發射裝置，接收一第一驅動信號，並基於該第一驅動信號以依序分別驅動該些第一光發射裝置；多個第二驅動電路，相互串聯耦接，分別對應該些第二光發射裝置，接收該第二驅動信號，並基於該第二驅動信號以依序分別驅動該些第二光發射裝置；以及一控制器，耦接該些第一驅動電路以及該些第二驅動電路，依據一基準時脈信號以產生該第一驅動信號以及該第二驅動信號，其中該第一驅動信號與該第二驅動信號同步，使該控制器同時驅動該些第一驅動電路及該些第二驅動電路所形成的所有串列。 A backlight device includes: a plurality of first light emitting devices; a plurality of second light emitting devices; a plurality of first driving circuits, coupled in series with each other, respectively corresponding to the first light emitting devices, and receiving a first driving signal , And respectively drive the first light emitting devices in sequence based on the first driving signal; a plurality of second driving circuits, coupled in series with each other, respectively correspond to the second light emitting devices, and receive the second driving signal, And respectively drive the second light emitting devices in sequence based on the second drive signal; and a controller, coupled to the first drive circuits and the second drive circuits, to generate the second light emitting devices according to a reference clock signal The first driving signal and the second driving signal, wherein the first driving signal is synchronized with the second driving signal, so that the controller simultaneously drives all the series formed by the first driving circuits and the second driving circuits . 如申請專利範圍第1項所述的背光裝置，其中該控制器包括：一第一控制電路，發送該基準時脈信號，產生該第一驅動信號；以及一第二控制電路，依據該基準時脈信號產生該第二驅動信號。 According to the backlight device described in claim 1, wherein the controller includes: a first control circuit that sends the reference clock signal to generate the first driving signal; and a second control circuit that is based on the reference time The pulse signal generates the second driving signal. 如申請專利範圍第2項所述的背光裝置，其中該第一控制電路與該第二控制電路設置在相同的一晶片中，該第一控制電 路透過該晶片中的一內部導線以傳送該基準時脈信號至該第二控制電路。 As for the backlight device described in claim 2, wherein the first control circuit and the second control circuit are provided in the same chip, and the first control circuit The circuit transmits the reference clock signal to the second control circuit through an internal wire in the chip. 如申請專利範圍第2項所述的背光裝置，其中該第一控制電路與該第二控制電路設置在相同的一晶片中，該第一控制電路與該第二控制電路分別耦接至該晶片的一第一引腳端以及一第二引腳端。 The backlight device according to claim 2, wherein the first control circuit and the second control circuit are provided in the same chip, and the first control circuit and the second control circuit are respectively coupled to the chip A first pin end and a second pin end of the. 如申請專利範圍第4項所述的背光裝置，其中該顯示裝置更包括一外部導線，耦接在該第一引腳端與該第二引腳端間，該第一控制電路透過該外部導線以傳送該基準時脈信號至該第二控制電路。 The backlight device according to claim 4, wherein the display device further includes an external wire coupled between the first pin terminal and the second pin terminal, and the first control circuit passes through the external wire To transmit the reference clock signal to the second control circuit. 如申請專利範圍第1項所述的背光裝置，其中該控制器包括：一核心電路，發送該基準時脈信號；一第一控制電路，依據該基準時脈信號產生該第一驅動信號；以及一第二控制電路，依據該基準時脈信號產生該第二驅動信號。 The backlight device of claim 1, wherein the controller includes: a core circuit that sends the reference clock signal; a first control circuit that generates the first driving signal according to the reference clock signal; and A second control circuit generates the second driving signal according to the reference clock signal. 如申請專利範圍第1項所述的背光裝置，其中各該第一光發射裝置為發光二極體串，各該第二光發射裝置為發光二極體串。 As described in the first item of the scope of patent application, each of the first light emitting devices is a string of light emitting diodes, and each of the second light emitting devices is a string of light emitting diodes. 一種驅動方法，適用於一背光裝置，其中該背光裝置包括多個第一光發射裝置以及多個第二光發射裝置，所述驅動方法包括： 依據一基準時脈信號提供一第一驅動信號以及一第二驅動信號；透過相互串聯耦接的多個第一驅動電路，以基於該第一驅動信號依序分別驅動該些第一光發射裝置，該些第一驅動電路分別對應該些第一光發射裝置；以及透過相互串聯耦接的多個第二驅動電路，以基於該第二驅動信號依序分別驅動該些第二光發射裝置，該些第二驅動電路分別對應該些第二光發射裝置，其中該第一驅動信號與該第二驅動信號同步，使該些第一驅動電路及該些第二驅動電路所形成的所有串列同時被驅動。 A driving method suitable for a backlight device, wherein the backlight device includes a plurality of first light emitting devices and a plurality of second light emitting devices, and the driving method includes: Provide a first driving signal and a second driving signal according to a reference clock signal; through a plurality of first driving circuits coupled in series, the first light emitting devices are driven in sequence based on the first driving signal , The first driving circuits respectively correspond to the first light emitting devices; and through a plurality of second driving circuits coupled in series with each other to sequentially drive the second light emitting devices based on the second driving signal, The second driving circuits respectively correspond to the second light emitting devices, wherein the first driving signal is synchronized with the second driving signal, so that all the series formed by the first driving circuits and the second driving circuits At the same time be driven. 如申請專利範圍第8項所述的驅動方法，其中依據該基準時脈信號提供該第一驅動信號以及該第二驅動信號的步驟包括：透過一第一控制電路，發送該基準時脈信號，產生該第一驅動信號；以及透過一第二控制電路，依據該基準時脈信號產生該第二驅動信號。 According to the driving method described in item 8 of the scope of patent application, the step of providing the first driving signal and the second driving signal according to the reference clock signal includes: transmitting the reference clock signal through a first control circuit, Generating the first driving signal; and generating the second driving signal according to the reference clock signal through a second control circuit. 如申請專利範圍第8項所述的驅動方法，其中該背光裝置另包括多個第三光發射裝置，所述驅動方法另包括：依據該基準時脈信號提供一第三驅動信號；以及透過相互串聯耦接的多個第三驅動電路，以基於該第三驅動信號依序分別驅動該些第三光發射裝置。 The driving method according to claim 8, wherein the backlight device further includes a plurality of third light emitting devices, and the driving method further includes: providing a third driving signal according to the reference clock signal; and transmitting a mutual A plurality of third driving circuits coupled in series respectively drive the third light emitting devices in sequence based on the third driving signal.
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