技术领域technical field
本发明是有关于一种驱动装置，且特别是有关于一种显示驱动装置。The present invention relates to a driving device, and in particular to a display driving device.
背景技术Background technique
液晶显示器(Liquid Crystal Display，LCD)具有外型轻薄、耗电量少以及无辐射污染等特性，已被广泛地应用在各种电脑系统、移动电话、个人数码助理(PDA)等信息产品上。液晶显示器的工作原理是利用液晶分子在不同排列状态下，对光线具有不同的偏振或折射效果，因此可通过不同排列状态的液晶分子来控制光线的穿透量，进一步产生不同强度的输出光线，及不同灰阶强度的红、绿、蓝光。Liquid Crystal Display (LCD) has the characteristics of light and thin appearance, low power consumption, and no radiation pollution. It has been widely used in various information products such as computer systems, mobile phones, and personal digital assistants (PDAs). The working principle of the liquid crystal display is to use the liquid crystal molecules in different alignment states to have different polarization or refraction effects on the light. Therefore, the liquid crystal molecules in different alignment states can be used to control the penetration of light, and further generate output light of different intensities. And red, green, blue light with different grayscale intensities.
要执行上述显示图像的操作，通常是利用时序控制器、栅极驱动器、源极驱动器来驱动液晶显示器。为了进行图像处理，现有技术是将存储器设计在时序控制器内。当液晶显示器显示静态画面时，时序控制器与源极驱动器彼此间仍需持续传送画面数据，因此会持续耗电。To perform the above-mentioned operations of displaying images, a timing controller, a gate driver, and a source driver are usually used to drive the liquid crystal display. For image processing, the prior art is to design the memory in the timing controller. When the liquid crystal display displays a static image, the timing controller and the source driver still need to continuously transmit image data to each other, so power consumption continues.
发明内容Contents of the invention
本发明提供一种显示驱动装置，可以达到省电效果。The invention provides a display driving device, which can achieve power saving effect.
本发明提供一种显示驱动装置，用以驱动一显示面板。显示驱动装置包括一图像处理器、一时序控制器以及多个源极驱动器。图像处理器用以判断一画面数据所对应的一图像画面是否为静态画面，并且输出画面数据及一判断结果。时序控制器耦接至图像处理器，用以从图像处理器接收画面数据，并且输出画面数据。源极驱动器耦接至时序控制器，用以从时序控制器接收画面数据，并且根据画面数据来驱动显示面板。各源极驱动器包括一存储器模组，用以储存对应静态画面的画面数据。当源极驱动器根据对应静态画面的画面数据来驱动显示面板时，图像处理器停止输出画面数据至时序控制器，并且时序控制器停止输出画面数据至源极驱动器。The invention provides a display driving device for driving a display panel. The display driving device includes an image processor, a timing controller and multiple source drivers. The image processor is used for judging whether an image frame corresponding to a frame data is a static frame, and outputting the frame data and a judging result. The timing controller is coupled to the image processor for receiving frame data from the image processor and outputting frame data. The source driver is coupled to the timing controller for receiving frame data from the timing controller and driving the display panel according to the frame data. Each source driver includes a memory module for storing frame data corresponding to a static frame. When the source driver drives the display panel according to the picture data corresponding to the static picture, the image processor stops outputting the picture data to the timing controller, and the timing controller stops outputting the picture data to the source driver.
在本发明的一实施例中，上述的各存储器模组包括一图像处理电路以及一存储器电路。图像处理电路耦接至时序控制器，用以对画面数据进行一第一图像处理，并且输出经第一图像处理的画面数据。存储器电路耦接至图像处理电路，用以储存经第一图像处理的画面数据。In an embodiment of the present invention, each of the above-mentioned memory modules includes an image processing circuit and a memory circuit. The image processing circuit is coupled to the timing controller for performing a first image processing on the image data and outputting the image data processed by the first image. The memory circuit is coupled to the image processing circuit and is used for storing the image data processed by the first image.
在本发明的一实施例中，当上述的各源极驱动器根据画面数据来驱动显示面板时，图像处理电路从存储器电路读取画面数据，并且对画面数据进行一第二图像处理。In an embodiment of the present invention, when the above source drivers drive the display panel according to the picture data, the image processing circuit reads the picture data from the memory circuit, and performs a second image processing on the picture data.
在本发明的一实施例中，上述的存储器模组还用以储存对应动态画面的画面数据。In an embodiment of the present invention, the above-mentioned memory module is also used to store picture data corresponding to the dynamic picture.
在本发明的一实施例中，上述的各源极驱动器还包括一多工器电路。多工器电路耦接至时序控制器，用以根据一控制信号，选择输出对应动态画面的画面数据或者对应动态画面的画面数据来驱动显示面板。In an embodiment of the present invention, each of the above-mentioned source drivers further includes a multiplexer circuit. The multiplexer circuit is coupled to the timing controller for selectively outputting the picture data corresponding to the dynamic picture or the picture data corresponding to the dynamic picture to drive the display panel according to a control signal.
在本发明的一实施例中，上述的图像处理器根据判断结果输出控制信号来控制多工器电路。In an embodiment of the present invention, the above-mentioned image processor outputs a control signal to control the multiplexer circuit according to the judgment result.
在本发明的一实施例中，上述的各源极驱动器还包括一多工器控制器。多工器控制器耦接至时序控制器，用以判断时序控制器输出的画面数据所对应的图像画面是否为静态画面，并且根据判断结果输出控制信号来控制多工器电路。In an embodiment of the present invention, each of the above source drivers further includes a multiplexer controller. The multiplexer controller is coupled to the timing controller for judging whether the image frame corresponding to the frame data output by the timing controller is a static frame, and outputs a control signal to control the multiplexer circuit according to the judging result.
在本发明的一实施例中，上述的各存储器模组包括一图像处理电路以及一存储器电路。图像处理电路耦接至时序控制器，用以对画面数据进行一第一图像处理，并且输出经第一图像处理的画面数据。存储器电路耦接至图像处理电路，用以储存经第一图像处理的画面数据。当多工器电路选择输出对应静态画面的画面数据时，图像处理电路从存储器电路读取画面数据，对画面数据进行一第二图像处理，并且输出经第二图像处理的画面数据。In an embodiment of the present invention, each of the above-mentioned memory modules includes an image processing circuit and a memory circuit. The image processing circuit is coupled to the timing controller for performing a first image processing on the image data and outputting the image data processed by the first image. The memory circuit is coupled to the image processing circuit and is used for storing the image data processed by the first image. When the multiplexer circuit selects to output the picture data corresponding to the static picture, the image processing circuit reads the picture data from the memory circuit, performs a second image processing on the picture data, and outputs the picture data processed by the second image.
在本发明的一实施例中，上述的各源极驱动器更包括一伽玛电压输出电路。伽玛电压输出电路耦接至时序控制器，用以从时序控制器接收画面数据，并且输出对应画面数据的一伽玛电压信号来驱动显示面板。各源极驱动器根据画面数据来控制其内部的伽玛电压输出电路，以调整伽玛电压信号。In an embodiment of the present invention, each of the above-mentioned source drivers further includes a gamma voltage output circuit. The gamma voltage output circuit is coupled to the timing controller for receiving frame data from the timing controller and outputting a gamma voltage signal corresponding to the frame data to drive the display panel. Each source driver controls its internal gamma voltage output circuit according to the image data to adjust the gamma voltage signal.
在本发明的一实施例中，上述的显示驱动装置和显示面板设置于一图像显示装置。图像显示装置包括一光源模组，用以提供该显示面板一背光源。各源极驱动器根据画面数据来控制光源模组，以调整背光源的亮度。In an embodiment of the present invention, the above-mentioned display driving device and display panel are arranged in an image display device. The image display device includes a light source module for providing a backlight source for the display panel. Each source driver controls the light source module according to the image data to adjust the brightness of the backlight source.
基于上述，在本发明的范例实施例中，各源极驱动器可将画面数据储存在其内部的存储器模组，因此，当显示面板显示静态画面时，图像处理器及时序控制器可分别停止输出对应的画面数据至时序控制器及各源极驱动器。Based on the above, in the exemplary embodiment of the present invention, each source driver can store the picture data in its internal memory module, therefore, when the display panel displays a static picture, the image processor and the timing controller can respectively stop outputting The corresponding picture data is sent to the timing controller and each source driver.
为让本发明的上述特征和优点能更明显易懂，下文特举实施例，并配合附图作详细说明如下。In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.
附图说明Description of drawings
图1为本发明一相关例的显示驱动装置的概要示意图；FIG. 1 is a schematic diagram of a display driving device according to a related example of the present invention;
图2为本发明一实施例的显示驱动装置的概要示意图；FIG. 2 is a schematic diagram of a display driving device according to an embodiment of the present invention;
图3为本发明一实施例的源极驱动器的概要示意图；3 is a schematic diagram of a source driver according to an embodiment of the present invention;
图4为本发明另一实施例的源极驱动器的概要示意图；4 is a schematic diagram of a source driver according to another embodiment of the present invention;
图5为本发明一实施例的图像显示装置的概要示意图。FIG. 5 is a schematic diagram of an image display device according to an embodiment of the present invention.
附图标记说明：Explanation of reference signs:
100、200：显示驱动装置；100, 200: display driving device;
110、210：图像处理器；110, 210: image processor;
120、220、320、420：时序控制器；120, 220, 320, 420: timing controller;
122：存储器；122: memory;
130_1、130_2、130_(n-1)、130_n、230_1、230_2、230_(n-1)、230_n、330、430：源极驱动器；130_1, 130_2, 130_(n-1), 130_n, 230_1, 230_2, 230_(n-1), 230_n, 330, 430: source driver;
232_1、232_2、232_(n-1)、232_n：存储器模组；232_1, 232_2, 232_(n-1), 232_n: memory modules;
331、431：存储器电路；331, 431: memory circuit;
332、432：存储器模组；332, 432: memory module;
333、433：图像处理电路；333, 433: image processing circuit;
334、434：收发器电路；334, 434: transceiver circuit;
335a、435a：存储器储存电路；335a, 435a: memory storage circuit;
335b、435b：存储器控制电路；335b, 435b: memory control circuit;
336、436：伽玛电压输出电路；336, 436: Gamma voltage output circuit;
337a：第一闩锁器电路；337a: first latch circuit;
337b：第二闩锁器电路；337b: second latch circuit;
338：多工器电路；338: multiplexer circuit;
339、439：输出缓冲器电路；339, 439: output buffer circuit;
340：多工器控制器；340: multiplexer controller;
437：闩锁器电路；437: latch circuit;
500：图像显示装置；500: image display device;
510：显示面板；510: display panel;
520：光源模组；520: light source module;
S1、S2：画面数据；S1, S2: screen data;
Sctr11、Sctr12、Sctr13：控制信号；Sctr11, Sctr12, Sctr13: control signals;
Sd：动态画面数据；Sd: dynamic picture data;
Sc：静态画面数据；Sc: Static picture data;
Y1、Y2、Y3、YN-1、YN：像素数据；Y1, Y2, Y3, YN-1, YN: pixel data;
Vr：伽玛电压信号。Vr: Gamma voltage signal.
具体实施方式Detailed ways
图1为本发明一相关例的显示驱动装置的概要示意图。请参照图1，本相关例的显示驱动装置100包括图像处理器110、时序控制器120以及多个源极驱动器130_1至130_n，用以驱动显示面板(未示出)。此显示驱动装置100支持屏幕自动更新(Panel Self Refresh，PSR)功能，为了支持这一功能，时序控制器120内部必需包括存储器122来储存静止画面。因此，在画面静止时，图像处理器110可以将静态画面存进时序控制器120的存储器122中。接着，图像处理器110会停止输出画面数据S1至时序控制器，直接由时序控制器120提供储存在存储器122中的静态画面数据S2给源极驱动器130_1至130_n，以降低图像处理器110的功率消耗。然而，由于此时时序控制器120与源极驱动器130_1至130_n之间仍是处于持续传输画面数据的状态，因此，这一操作会显著增加时序控制器120的功率消耗。FIG. 1 is a schematic diagram of a display driving device according to a related example of the present invention. Referring to FIG. 1 , the display driving device 100 of this related example includes an image processor 110 , a timing controller 120 and a plurality of source drivers 130_1 to 130 — n for driving a display panel (not shown). The display driver 100 supports a panel self refresh (PSR) function. In order to support this function, the timing controller 120 must include a memory 122 to store still images. Therefore, when the picture is still, the image processor 110 can store the still picture in the memory 122 of the timing controller 120 . Next, the image processor 110 stops outputting the image data S1 to the timing controller, and the timing controller 120 directly provides the static image data S2 stored in the memory 122 to the source drivers 130_1 to 130_n, so as to reduce the power of the image processor 110 consume. However, since the timing controller 120 and the source drivers 130_1 to 130 — n are still in a state of continuously transmitting frame data at this time, this operation will significantly increase the power consumption of the timing controller 120 .
图2为本发明一实施例的显示驱动装置的概要示意图。请参照图2，本实施例的显示驱动装置200包括图像处理器210、时序控制器220以及多个源极驱动器230_1至230_n。图像处理器210用以判断画面数据S1所对应的图像画面是否为静态画面，并且输出画面数据S1给时序控制器220。时序控制器220耦接至图像处理器210，用以从图像处理器210接收画面数据S1，并且分别输出画面数据S2至各源极驱动器230_1至230_n。源极驱动器230_1至230_n耦接至时序控制器220，用以从时序控制器220接收画面数据S2，并且根据画面数据S2来驱动显示面板(未示出)。FIG. 2 is a schematic diagram of a display driving device according to an embodiment of the present invention. Referring to FIG. 2 , the display driving device 200 of this embodiment includes an image processor 210 , a timing controller 220 and a plurality of source drivers 230_1 to 230_n. The image processor 210 is used to determine whether the image frame corresponding to the frame data S1 is a static frame, and output the frame data S1 to the timing controller 220 . The timing controller 220 is coupled to the image processor 210 for receiving the frame data S1 from the image processor 210 and outputting the frame data S2 to the source drivers 230_1 to 230_n respectively. The source drivers 230_1 to 230_n are coupled to the timing controller 220 for receiving frame data S2 from the timing controller 220 and driving a display panel (not shown) according to the frame data S2 .
详细而言，在本实施例中，各源极驱动器230_1至230_n包括存储器模组232_1至232_n，用以储存对应静态画面的画面数据S2。当源极驱动器230_1至230_n根据静态画面数据S2来驱动显示面板时，本实施例的图像处理器210会停止输出画面数据S1至时序控制器220，并且时序控制器220也会停止输出画面数据S2至源极驱动器230_1至230_n，以减少显示驱动装置200整体的功率消耗。具体而言，相较于图1的显示驱动装置100，本实施例的时序控制器220并未配置对应于存储器122的储存元件。相对的，本实施例的源极驱动器230_1至230_n分别包括存储器模组232_1至232_n。这些存储器模组232_1至232_n可使图像处理器210在画面静止时，将静态画面数据S2分别储存至源极驱动器230_1至230_n中。因此，图像处理器210可停止输出对应静态画面的画面数据S1至时序控制器，并且图像处理器210也可停止输出对应静态画面的画面数据S2至源极驱动器230_1至230_n，直接由源极驱动器230_1至230_n利用所储存的静态画面数据S2来驱动显示面板，以降低图像处理器210与时序控制器220整体的功率消耗。In detail, in this embodiment, each of the source drivers 230_1 to 230_n includes memory modules 232_1 to 232_n for storing the frame data S2 corresponding to the static frame. When the source drivers 230_1 to 230_n drive the display panel according to the static image data S2, the image processor 210 of this embodiment will stop outputting the image data S1 to the timing controller 220, and the timing controller 220 will also stop outputting the image data S2 to the source drivers 230_1 to 230_n, so as to reduce the overall power consumption of the display driving device 200 . Specifically, compared with the display driving device 100 in FIG. 1 , the timing controller 220 of this embodiment is not configured with a storage element corresponding to the memory 122 . In contrast, the source drivers 230_1 to 230 — n of this embodiment include memory modules 232_1 to 232 — n respectively. These memory modules 232_1 to 232_n enable the image processor 210 to store the static image data S2 in the source drivers 230_1 to 230_n respectively when the image is still. Therefore, the image processor 210 can stop outputting the frame data S1 corresponding to the static frame to the timing controller, and the image processor 210 can also stop outputting the frame data S2 corresponding to the static frame to the source drivers 230_1 to 230_n, directly by the source drivers 230_1 to 230_n use the stored static frame data S2 to drive the display panel, so as to reduce the overall power consumption of the image processor 210 and the timing controller 220 .
应注意的是，在本实施例中，源极驱动器230_1至230_n的存储器模组232_1至232_n并不限于储存对应静态画面的画面数据，也可用以储存对应动态画面的画面数据。It should be noted that, in this embodiment, the memory modules 232_1 to 232_n of the source drivers 230_1 to 230 — n are not limited to storing frame data corresponding to static frames, and can also be used to store frame data corresponding to dynamic frames.
图3为本发明一实施例的源极驱动器的概要示意图。请参照图3，本实施例的源极驱动器330包括存储器模组332、收发器电路334、伽玛电压输出电路336、多工器电路338以及多工器控制器340。收发器电路334耦接至时序控制器320，用以接收时序控制器320所输出的画面数据S2，包括R、G、B像素数据或其他显示信息，并且将所接收的画面数据S2输出至下一级电路。在本实施例中，源极驱动器330会根据画面数据S2是动态画面还是静态画面来决定是否选择存储器模组332中所储存的静态画面来驱动显示面板。FIG. 3 is a schematic diagram of a source driver according to an embodiment of the present invention. Referring to FIG. 3 , the source driver 330 of this embodiment includes a memory module 332 , a transceiver circuit 334 , a gamma voltage output circuit 336 , a multiplexer circuit 338 and a multiplexer controller 340 . The transceiver circuit 334 is coupled to the timing controller 320 for receiving the picture data S2 output by the timing controller 320, including R, G, B pixel data or other display information, and outputting the received picture data S2 to the following primary circuit. In this embodiment, the source driver 330 determines whether to select the static image stored in the memory module 332 to drive the display panel according to whether the image data S2 is a dynamic image or a static image.
具体而言，本实施例的多工器控制器340用以判断画面数据S2所对应的图像画面是否为静态画面，并且根据判断结果输出控制信号Sctr11来控制多工器电路338。多工器电路338用以根据控制信号Sctr11，选择输出对应动态画面的画面数据或者对应静态画面的画面数据来驱动显示面板。经判断，若画面数据S2为动态画面，则多工器电路338会输出动态画面数据Sd，并且通过数据汇流排将动态画面数据Sd依序储存至第一闩锁器电路337a及第二闩锁器电路337b。接着，再由输出缓冲器电路339输出像素数据Y1至YN来驱动面板。反之，若画面数据S2为静态画面，则多工器电路338会输出静态画面数据Sc来驱动显示面板。Specifically, the multiplexer controller 340 of this embodiment is used to determine whether the image frame corresponding to the frame data S2 is a static frame, and output the control signal Sctr11 to control the multiplexer circuit 338 according to the determination result. The multiplexer circuit 338 is used to select and output the picture data corresponding to the dynamic picture or the picture data corresponding to the static picture according to the control signal Sctr11 to drive the display panel. After judging, if the picture data S2 is a dynamic picture, the multiplexer circuit 338 will output the dynamic picture data Sd, and store the dynamic picture data Sd in the first latch circuit 337a and the second latch sequentially through the data bus. Toler circuit 337b. Then, the output buffer circuit 339 outputs the pixel data Y1 to YN to drive the panel. On the contrary, if the frame data S2 is a static frame, the multiplexer circuit 338 will output the static frame data Sc to drive the display panel.
应注意的是，多工器控制器340所判断的画面数据S2可以是由源极驱动器330内部的收发器电路334所提供，也可以是由外部的时序控制器320所提供。此外，本实施例的控制信号Sctr11虽然是由多工器控制器340来产生，但本发明并不以此为限。在另一实施例中，源极驱动器330也可设计不配置多工器控制器340，而直接利用例如是图2的图像处理器210来产生控制信号Sctr11。也就是说，图像处理器210也会判断画面数据S2所对应的图像画面是否为静态画面，并且根据判断结果来输出控制信号Sctr11。It should be noted that the frame data S2 determined by the multiplexer controller 340 may be provided by the transceiver circuit 334 inside the source driver 330 , or provided by the external timing controller 320 . In addition, although the control signal Sctr11 in this embodiment is generated by the multiplexer controller 340, the present invention is not limited thereto. In another embodiment, the source driver 330 can also be designed without configuring the multiplexer controller 340 , and directly uses, for example, the image processor 210 of FIG. 2 to generate the control signal Sctr11 . That is to say, the image processor 210 also judges whether the image frame corresponding to the frame data S2 is a static frame, and outputs the control signal Sctr11 according to the judgment result.
进一步说明画面数据S2为静态画面时，源极驱动器330的操作方式。在本实施例中，存储器模组332更包括图像处理电路333以及存储器电路331。图像处理电路333用以对画面数据S2进行第一图像处理，此处的第一图像处理例如是压缩画面数据或者调整画面数据的图像对比度、解析度、色彩鲜艳度、亮度等图像处理。并且，图像处理电路333将经处理的画面数据储存至存储器电路331。在本实施例中，存储器电路331包括存储器储存电路335a以及存储器控制电路335b。存储器储存电路335a用以储存画面数据，存储器控制电路335b用以控制、管理画面数据的读写操作及储存区块。接着，当多工器电路338欲选择输出对应静态画面的画面数据Sc时，图像处理电路333c会从存储器储存电路335a读取画面数据，并且对所读取的画面数据Sc进行第二图像处理，之后再输出经图像处理的画面数据Sc给多工器电路338。The operation of the source driver 330 is further described when the frame data S2 is a static frame. In this embodiment, the memory module 332 further includes an image processing circuit 333 and a memory circuit 331 . The image processing circuit 333 is used for performing first image processing on the image data S2, where the first image processing is, for example, image processing such as compressing the image data or adjusting image contrast, resolution, color vividness, and brightness of the image data. Furthermore, the image processing circuit 333 stores the processed frame data in the memory circuit 331 . In this embodiment, the memory circuit 331 includes a memory storage circuit 335a and a memory control circuit 335b. The memory storage circuit 335a is used for storing the image data, and the memory control circuit 335b is used for controlling and managing the read and write operations of the image data and the storage blocks. Next, when the multiplexer circuit 338 intends to select and output the picture data Sc corresponding to the static picture, the image processing circuit 333c will read the picture data from the memory storage circuit 335a, and perform the second image processing on the read picture data Sc, Then output the image-processed frame data Sc to the multiplexer circuit 338 .
应注意的是，第二图像处理操作可选择性的实施。举例而言，若图像处理电路333是对画面数据S2进行压缩后再储存，则在读取画面数据Sc时，图像处理电路333会对画面数据Sc进行解压后再输出给多工器电路338。相对的，若图像处理电路333是进行调整画面数据S2的图像对比度、解析度、色彩鲜艳度、亮度等的第一图像处理，则此例的第二图像处理操作可选择性的实施。It should be noted that the second image processing operation can be optionally implemented. For example, if the image processing circuit 333 compresses the frame data S2 before storing it, then when reading the frame data Sc, the image processing circuit 333 decompresses the frame data Sc and then outputs it to the multiplexer circuit 338 . In contrast, if the image processing circuit 333 performs the first image processing to adjust the image contrast, resolution, color vividness, brightness, etc. of the image data S2, then the second image processing operation in this example can be selectively implemented.
另外，伽玛电压输出电路336用以从时序控制器320接收画面数据S2，并且输出对应于不同画面数据的伽玛电压信号Vr来驱动显示面板。在本实施例中，图像处理电路333也可根据画面数据S2利用控制信号Sctr12来控制伽玛电压输出电路336，以调整所输出的伽玛电压信号Vr，从而达到省电的效果。In addition, the gamma voltage output circuit 336 is used to receive the frame data S2 from the timing controller 320, and output the gamma voltage signal Vr corresponding to different frame data to drive the display panel. In this embodiment, the image processing circuit 333 can also use the control signal Sctr12 to control the gamma voltage output circuit 336 according to the frame data S2, so as to adjust the outputted gamma voltage signal Vr, so as to save power.
因此，在本实施例中，源极驱动器330包括存储器模组332，可用以储存对应静态画面的画面数据。当源极驱动器330根据对应静态画面的画面数据来驱动显示面板时，图像处理器(未示出)停止输出画面数据至时序控制器320，并且时序控制器320停止输出画面数据至源极驱动器330，从而降低图像处理器(未示出)与时序控制器320整体的功率消耗。Therefore, in this embodiment, the source driver 330 includes a memory module 332 for storing frame data corresponding to a static frame. When the source driver 330 drives the display panel according to the picture data corresponding to the static picture, the image processor (not shown) stops outputting the picture data to the timing controller 320, and the timing controller 320 stops outputting the picture data to the source driver 330 , so as to reduce the overall power consumption of the image processor (not shown) and the timing controller 320 .
图4为本发明另一实施例的源极驱动器的概要示意图。请参照图3及图4，本实施例的源极驱动器430类似于图3的源极驱动器330，只是两者之间主要的差异例如在于源极驱动器430中并未配置多工器电路及多工器控制器。在本实施例中，根据实际设计需求，源极驱动器430并不会对画面数据S2是动态画面或静态画面加以区分。无论画面数据S2是动态画面或静态画面，存储器模组432皆可对画面数据S2进行图像处理及数据储存的操作。因此，在本实施例中，存储器模组432也可用以储存动态画面对应的画面数据S2。图像处理电路433会经由数据汇流排将画面数据S2储存至闩锁器电路437。接着，再由输出缓冲器电路439输出像素数据Y1至YN来驱动面板。FIG. 4 is a schematic diagram of a source driver according to another embodiment of the present invention. 3 and FIG. 4, the source driver 430 of this embodiment is similar to the source driver 330 of FIG. machine controller. In this embodiment, according to actual design requirements, the source driver 430 does not distinguish whether the frame data S2 is a dynamic frame or a static frame. Regardless of whether the image data S2 is a dynamic image or a static image, the memory module 432 can perform image processing and data storage operations on the image data S2. Therefore, in this embodiment, the memory module 432 can also be used to store the picture data S2 corresponding to the dynamic picture. The image processing circuit 433 stores the frame data S2 into the latch circuit 437 via the data bus. Then, the output buffer circuit 439 outputs the pixel data Y1 to YN to drive the panel.
另外，本实施例的源极驱动器430的其他操作可以由图3的实施例的叙述中获致足够的指示、建议与实施说明，因此不再赘述。In addition, other operations of the source driver 430 in this embodiment can obtain sufficient instructions, suggestions and implementation descriptions from the description of the embodiment in FIG. 3 , so no more details are given here.
图5为本发明一实施例的图像显示装置的概要示意图。请参考图2及图5，本实施例的图像显示装置500包括显示驱动装置200、显示面板510及光源模组520。显示驱动装置200用以驱动显示面板510来显示对应画面数据S2的图像画面。光源模组520例如为发光二极体背光模组，用以提供显示面板510显示图像画面所需的背光源。FIG. 5 is a schematic diagram of an image display device according to an embodiment of the present invention. Please refer to FIG. 2 and FIG. 5 , the image display device 500 of this embodiment includes a display driving device 200 , a display panel 510 and a light source module 520 . The display driving device 200 is used to drive the display panel 510 to display an image frame corresponding to the frame data S2. The light source module 520 is, for example, a light-emitting diode backlight module, which is used to provide the backlight required by the display panel 510 for displaying images.
在本实施例中，显示驱动装置200的源极驱动器230_1至230_n，其内部电路的实施方式例如可以是图3及图4所示的电路架构。为了达到省电的目的，显示驱动装置200的各源极驱动器会根据画面数据来控制光源模组520，以调整所提供的背光源的亮度。举例而言，在显示面板510显示静态画面的情况下，所需的背光源亮度可能较低，此时图像处理电路333、433可根据画面数据S2的图像画面特性，经由控制信号Sctr13来关闭光源模组520内部的部份发光二极体，从而降低背光源的亮度，达到省电的目的。In this embodiment, the internal circuits of the source drivers 230_1 to 230_n of the display driving device 200 may be, for example, the circuit structures shown in FIG. 3 and FIG. 4 . In order to save power, each source driver of the display driving device 200 controls the light source module 520 according to the image data to adjust the brightness of the provided backlight. For example, when the display panel 510 displays a static picture, the required brightness of the backlight source may be low. At this time, the image processing circuits 333 and 433 can turn off the light source through the control signal Sctr13 according to the picture characteristics of the picture data S2. Part of the light-emitting diodes inside the module 520 reduces the brightness of the backlight and achieves the purpose of saving power.
综上所述，在本发明的范例实施例中，源极驱动器包括存储器模组，可用以储存画面数据。当源极驱动器根据静态画面数据来驱动显示面板时，图像处理器停止输出画面数据至时序控制器，并且时序控制器也停止输出画面数据至源极驱动器，从而降低图像处理器与时序控制器的功率消耗。To sum up, in an exemplary embodiment of the present invention, the source driver includes a memory module for storing frame data. When the source driver drives the display panel according to static picture data, the image processor stops outputting picture data to the timing controller, and the timing controller also stops outputting picture data to the source driver, thereby reducing the relationship between the image processor and the timing controller Power consumption.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.
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