TWI564868B - Data insertion circuit of display apparatus - Google Patents
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Description
本發明係相關於一種資料***電路，尤指一種應用於一顯示裝置的資料***電路。The present invention relates to a data insertion circuit, and more particularly to a data insertion circuit applied to a display device.
在一顯示裝置中，動態模糊(motion blur)技術常被應用來在兩張連續的動態影像間***一全黑/灰色之影像以加強畫面的品質。經由這類動態模糊技術的幫助，動態中的影像對肉眼而言會變得更加平滑。在一傳統顯示裝置(例如：一液晶顯示面板)中，動態模糊技術經常在一時序控制晶片(timing controller,TCON)中實現，而時序控制晶片通常用來作為一顯示模組(例如：一顯示卡)與一顯示驅動器間的介面。然而，為了實現動態模糊，時序控制晶片必須操作在較高的頻率來正確地輸入資料給液晶顯示面板，因而導致較高的功率消耗以及較差的系統效能。In a display device, motion blur is often applied to insert an all black/grey image between two consecutive motion pictures to enhance picture quality. With the help of this type of motion blur technology, images in motion will become smoother to the naked eye. In a conventional display device (for example, a liquid crystal display panel), the dynamic blurring technique is often implemented in a timing controller (TCON), and the timing control chip is usually used as a display module (for example, a display) Card) interface with a display driver. However, in order to achieve dynamic blur, the timing control chip must operate at a higher frequency to properly input data to the liquid crystal display panel, resulting in higher power consumption and poor system performance.
有鑑於此，本發明提供了能使時序控制晶片操作在較低頻率且從一外接來源***動態模糊資料的一種新的資料***電路，如此一來，不需要對系統作出大幅的改變便可提昇效能。In view of the above, the present invention provides a new data insertion circuit capable of operating a timing control chip at a lower frequency and inserting dynamic fuzzy data from an external source, so that the system can be improved without requiring a drastic change to the system. efficacy.
依據本發明之一實施例，其提供了一種應用於一顯示裝置的資料***電路。該資料***電路包含有一訊號源、一開關單元以及一控制單元。該訊號源用以提供一視訊驅動訊號。該開關單元具有耦接至該顯示裝置的一通道之一輸出節點、耦接至該訊號源之一第一輸入節點以及耦接至進行資料***之用之一控制電壓的一第二輸入節點，該開關單元係用以選擇性地輸出該視訊驅動訊號或該控制電壓給該輸出節點。該控制單元則耦接至該開關單元。當該顯示裝置處於一一般模式時，該控制單元控制該開關單元來傳送該視訊驅動訊號給該顯示裝置，而當該顯示裝置處於一資料***模式時，該控制單元控制該開關單元來傳送該控制電壓給該顯示裝置。According to an embodiment of the present invention, there is provided a data insertion circuit applied to a display device. The data insertion circuit includes a signal source, a switch unit and a control unit. The signal source is used to provide a video driving signal. The switch unit has an output node coupled to one of the channels of the display device, a first input node coupled to the signal source, and a second input node coupled to one of the control voltages for data insertion. The switching unit is configured to selectively output the video driving signal or the control voltage to the output node. The control unit is coupled to the switch unit. When the display device is in a general mode, the control unit controls the switch unit to transmit the video driving signal to the display device, and when the display device is in a data insertion mode, the control unit controls the switch unit to transmit the The voltage is controlled to the display device.
依據本發明之另一實施例，其提供了一種應用於一顯示裝置的資料***電路。該資料***電路包含有一第一訊號源、一第二訊號源、一第一開關單元、一第二開關單元、一多工器單元以及一控制單元。該第一訊號源與該第二訊號源分別用以提供一第一視訊驅動訊號以及一第二視訊驅動訊號。該第一開關單元則具有一輸出節點、耦接至該第一訊號源之一第一輸入節點以及耦接至進行資料***之用之一第一控制電壓的一第二輸入節點，該第一開關單元係用以選擇性地輸出該第一視訊驅動訊號或該第一控制電壓給該第一開關單元的該輸出節點。該第二開關單元具有一輸出節點、耦接至該第二訊號源之一第一輸入節點以及耦接至進行資料***之用之一第二控制電壓的一第二輸入節點，該第二開關單元係用以選擇性地輸出該第二視訊驅動訊號或該第二控制電壓給該第二開關單元的該輸出節點，其中該第一控制電壓之一電壓準位係不同於該第二控制電壓之一電壓準位。該多工器單元具有用以接收一控制訊號之一控制節點、耦接至該第一開關單元的該輸出節點之一第一輸入節點、耦接至該第二開關單元的該輸出節點之一第二輸入節點、耦接至該顯示裝置的一第一通道之一第一輸出節點以及耦接至該顯示裝置的一第二通道之一第二輸出節點，該多工器單元係用以依據該控制訊號來交替地輸出該第一控制電壓以及該第二控制電壓給該顯示裝置的該第一通道以及該第二通道。該控制單元則耦接至該第一開關單元、第二開關單元以及該多工器單元。當該顯示裝置處於一一般模式時，該控制單元控制該第一開關單元來傳送該第一視訊驅動訊號給該多工器單元，並控制該第二開關單元來傳送該第二視訊驅動訊號給該多工器單元，以及控制該多工器單元分別傳送該第一視訊驅動訊號以及該第二視訊驅動訊號給該顯示裝置的該第一通道以及該第二通道；而當該顯示裝置處於一資料***模式時，該控制單元控制該第一開關單元來傳送該第一控制電壓給該多工器單元，並控制該第二開關單元來傳送該第二控制電壓給該多工器單元。According to another embodiment of the present invention, there is provided a data insertion circuit applied to a display device. The data insertion circuit includes a first signal source, a second signal source, a first switching unit, a second switching unit, a multiplexer unit, and a control unit. The first signal source and the second signal source are respectively configured to provide a first video driving signal and a second video driving signal. The first switching unit has an output node, a first input node coupled to the first signal source, and a second input node coupled to the first control voltage for data insertion, the first The switching unit is configured to selectively output the first video driving signal or the first control voltage to the output node of the first switching unit. The second switch unit has an output node, a first input node coupled to the second signal source, and a second input node coupled to a second control voltage for data insertion, the second switch The unit is configured to selectively output the second video driving signal or the second control voltage to the output node of the second switching unit, wherein one of the first control voltages is different from the second control voltage One of the voltage levels. The multiplexer unit has a control node for receiving a control signal, a first input node coupled to the output node of the first switch unit, and one of the output nodes coupled to the second switch unit a second input node, a first output node coupled to a first channel of the display device, and a second output node coupled to the second channel of the display device, the multiplexer unit is configured to The control signal alternately outputs the first control voltage and the second control voltage to the first channel and the second channel of the display device. The control unit is coupled to the first switch unit, the second switch unit, and the multiplexer unit. When the display device is in a general mode, the control unit controls the first switch unit to transmit the first video drive signal to the multiplexer unit, and controls the second switch unit to transmit the second video drive signal to The multiplexer unit and the multiplexer unit respectively control the first video driving signal and the second video driving signal to the first channel and the second channel of the display device; and when the display device is in a In the data insertion mode, the control unit controls the first switching unit to transmit the first control voltage to the multiplexer unit, and controls the second switching unit to transmit the second control voltage to the multiplexer unit.
請參照第1圖，其為依據本發明之實施例所實現在一顯示裝置100中的一資料***電路110之示意圖。資料***電路110具有一訊號源111、一開關單元112以及一控制單元113。訊號源111提供一視訊驅動訊號Vd給開關單元112。開關單元112具有耦接至顯示裝置100的一通道120之一輸出節點N3、耦接至訊號源111之一第一輸入節點N1以及耦接到由開關單元112所產生之進行資料***之用之一控制電壓Vc的一第二輸入節點N2，此外，開關單元112會選擇性地輸出視訊驅動訊號Vd或控制電壓Vc給輸出節點N3。請注意，通道120可為顯示裝置100中對應一特定像素的一奇數通道(odd channel)或是一偶數通道(even channel)，比如說：一顯示面板上一特定像素的一偶數通道。當顯示裝置100處於一一般模式(normal mode)時，控制單元113控制開關單元112來傳送視訊驅動訊號Vd給顯示裝置100，然而，當顯示裝置100處於一資料***模式(data insertion mode)時，控制單元113控制開關單元112來傳送控制電壓Vc給顯示裝置100。Please refer to FIG. 1 , which is a schematic diagram of a data insertion circuit 110 implemented in a display device 100 in accordance with an embodiment of the present invention. The data insertion circuit 110 has a signal source 111, a switch unit 112, and a control unit 113. The signal source 111 provides a video driving signal Vd to the switching unit 112. The switch unit 112 has an output node N3 coupled to one of the channels 120 of the display device 100, a first input node N1 coupled to the signal source 111, and a data insertion device generated by the switch unit 112. A second input node N2 of the control voltage Vc, in addition, the switching unit 112 selectively outputs the video driving signal Vd or the control voltage Vc to the output node N3. It should be noted that the channel 120 can be an odd channel or an even channel corresponding to a specific pixel in the display device 100, for example, an even channel of a specific pixel on the display panel. When the display device 100 is in a normal mode, the control unit 113 controls the switch unit 112 to transmit the video drive signal Vd to the display device 100. However, when the display device 100 is in a data insertion mode, The control unit 113 controls the switching unit 112 to transmit the control voltage Vc to the display device 100.
但是，在實作上，資料***電路通常需要一個介面以便驅動一顯示裝置的一通道，於是，本發明所介紹的開關單元亦需要一個緩衝器來增強其傳送資料的驅動能力，更明確地來說，在此所揭露的資料***電路可分為兩大類。請一併配合第1圖來參照第2圖與第3圖。第2圖為依據本發明之一實施例所實現在一顯示裝置200中的一第一型資料***電路210之示意圖，而第3圖則是依據本發明之另一實施例所實現在顯示裝置300中的一第二型資料***電路310之示意圖。在第2圖中，引入了一個新增的緩衝器114(例如：具有負回授機制的一運算放大器)來設置於開關裝置112與訊號源111之間，以便驅動通道120。在這個範例中，當顯示裝置200處於該一般模式時，控制單元113會控制開關裝置112來依序經過緩衝器114與通道120傳送視訊驅動訊號Vd給顯示裝置200；而當顯示裝置200處在該資料***模式時，控制單元113會控制開關裝置112來傳送控制電壓Vc給顯示裝置200，此外，在該資料***模式期間，緩衝器114的輸出端會看到一個高阻抗的負載。However, in practice, the data insertion circuit usually requires an interface to drive a channel of a display device. Therefore, the switching unit described in the present invention also needs a buffer to enhance the driving capability of transmitting data, more specifically Said that the data insertion circuit disclosed here can be divided into two categories. Please refer to Figure 2 and Figure 3 together with Figure 1. 2 is a schematic diagram of a first type of data insertion circuit 210 implemented in a display device 200 in accordance with an embodiment of the present invention, and FIG. 3 is a display device implemented in accordance with another embodiment of the present invention. A schematic diagram of a second type of data insertion circuit 310 in 300. In Fig. 2, a new buffer 114 (e.g., an operational amplifier having a negative feedback mechanism) is introduced to be disposed between the switching device 112 and the signal source 111 to drive the channel 120. In this example, when the display device 200 is in the general mode, the control unit 113 controls the switching device 112 to sequentially transmit the video driving signal Vd to the display device 200 via the buffer 114 and the channel 120; and when the display device 200 is present When the data is inserted into the mode, the control unit 113 controls the switching device 112 to transmit the control voltage Vc to the display device 200. Further, during the data insertion mode, the output of the buffer 114 sees a high impedance load.
在第3圖中，一資料***電路310中配置一個新增的緩衝器114於一顯示裝置300的開關裝置112與訊號源111之間。在這個範例中，當顯示裝置300處於該一般模式時，控制單元113會控制開關裝置112來依序經過緩衝器114與通道120傳送視訊驅動訊號Vd給顯示裝置300；而當顯示裝置300處在該資料***模式時，控制單元113會控制開關裝置112依序經過緩衝器114與通道120來傳送控制電壓Vc給顯示裝置300，此外，在該資料***模式期間，訊號源111的輸出端會看到一個開路(open-circuited)負載。In FIG. 3, a new buffer 114 is disposed in a data insertion circuit 310 between the switching device 112 of a display device 300 and the signal source 111. In this example, when the display device 300 is in the general mode, the control unit 113 controls the switching device 112 to sequentially transmit the video driving signal Vd to the display device 300 via the buffer 114 and the channel 120; and when the display device 300 is present When the data is inserted into the mode, the control unit 113 controls the switching device 112 to sequentially transmit the control voltage Vc to the display device 300 via the buffer 114 and the channel 120. Further, during the data insertion mode, the output of the signal source 111 is viewed. Go to an open-circuited load.
請注意，控制單元113所提供的控制電壓Vc可以是由顯示裝置100、200或300提供的一固定供給電壓(例如：一非時變(time-invariant)電壓)、顯示裝置100、200或300的一共模電壓(common voltage,VCOM)、或是由外接於資料***電路110、120或130的一電力源130所提供之具有任意電位的一外接電壓，亦即控制電壓Vc可依不同的需求而應用不同的設計方式。舉例來說，對一個平常白/黑(normally white/black)的液晶顯示面板來說，當要***一全黑影像時，會透過控制單元113經由一供給電壓、一參考接地電壓或是顯示裝置100、200或300的一共模電壓來得到控制電壓Vc；而在要***一任意灰階影像時，則會透過控制單元113經由顯示裝置100、200或300的該共模電壓再加上一修正電壓來得到控制電壓Vc。Please note that the control voltage Vc provided by the control unit 113 may be a fixed supply voltage (eg, a time-invariant voltage) provided by the display device 100, 200 or 300, the display device 100, 200 or 300. A common voltage (VCOM), or an external voltage having an arbitrary potential provided by a power source 130 externally connected to the data insertion circuit 110, 120 or 130, that is, the control voltage Vc can be different according to different requirements. And apply different design methods. For example, for a normally white/black liquid crystal display panel, when a full black image is to be inserted, a voltage, a reference ground voltage or a display device is transmitted through the control unit 113. a common mode voltage of 100, 200 or 300 to obtain a control voltage Vc; and when an arbitrary gray scale image is to be inserted, a correction is added to the common mode voltage of the display device 100, 200 or 300 through the control unit 113. The voltage is used to obtain the control voltage Vc.
當一固定電壓持續施加在一顯示面板中一像素的一通道上時，該顯示面板可能會因此變得對電壓變化愈來愈不敏感，導致該顯示面板的使用壽命減少而故障。於是，當在***一全黑/任意灰階影像時，所施加的電壓需要經過一些修改以保護該顯示面板。請參照第4圖，其為依據本發明之另一實施例所實現在一顯示裝置400中的一資料***電路410之示意圖。相較於第1圖，顯示裝置400中的資料***電路410另包含了一控制電壓供給單元415。控制電壓供給單元415耦接於開關單元112與控制單元413之間，用以接收一第一參考電壓Vref1以及一第二參考電壓Vref2，並提供控制電壓Vc。當顯示裝置400處於該資料***模式時，控制單元413控制控制電壓供給單元415交替地輸出第一參考電壓Vref1以及第二參考電壓Vref2來作為控制電壓Vc，舉例來說，第一參考電壓Vref1與第二參考電壓Vref2可分別為VCM0+VDIFF0與VCM0-VDIFF0，其中VCM0為顯示裝置400的一共模電壓值，而DIFF0是不為零的一任意電壓值，是故，交替應用這兩個電壓給通道120來***一任意灰階影像，便可以避免損害到顯示裝置400。When a fixed voltage is continuously applied to a channel of a pixel in a display panel, the display panel may become increasingly insensitive to voltage changes, resulting in a reduction in the life of the display panel and failure. Thus, when a full black/arbitrary grayscale image is inserted, the applied voltage needs to be modified to protect the display panel. Please refer to FIG. 4, which is a schematic diagram of a data insertion circuit 410 implemented in a display device 400 in accordance with another embodiment of the present invention. In contrast to FIG. 1, the data insertion circuit 410 in the display device 400 further includes a control voltage supply unit 415. The control voltage supply unit 415 is coupled between the switch unit 112 and the control unit 413 for receiving a first reference voltage Vref1 and a second reference voltage Vref2 and providing a control voltage Vc. When the display device 400 is in the data insertion mode, the control unit 413 controls the control voltage supply unit 415 to alternately output the first reference voltage Vref1 and the second reference voltage Vref2 as the control voltage Vc, for example, the first reference voltage Vref1 and The second reference voltage Vref2 may be VCM0+VDIFF0 and VCM0-VDIFF0, respectively, wherein VCM0 is a common mode voltage value of the display device 400, and DIFF0 is an arbitrary voltage value that is not zero, so the two voltages are alternately applied. The channel 120 is inserted into an arbitrary grayscale image to avoid damage to the display device 400.
在實作上，對一顯示裝置(例如：一液晶顯示面板)來說，在該液晶顯示面板上的每個像素均需要經過一對通道(亦即，一奇數通道與一偶數通道)來驅動。對一個通常白的液晶顯示面板來說，在資料***模式期間，該奇數通道與該偶數通道的其中之一需要由該供給電壓來驅動，而另一個則需要由該接地電壓來驅動。舉例來說，請參照第5圖，其為依據本發明之一實施例所實現在一顯示裝置500中的一雙通道資料***電路510的示意圖。當顯示裝置500處於該一般模式時，一控制單元513控制開關單元512a與512b來分別經過緩衝器514a與514b而傳送訊號源511a與511b所分別產生的視訊驅動訊號Vd1與Vd2給一偶數通道520a與一奇數通道520b。當顯示裝置500處於該資料***模式時，控制單元513控制開關單元512a與512b來分別經過緩衝器514a與514b而傳送控制電壓Vc1與Vc2給偶數通道520a與奇數通道520b。In practice, for a display device (for example, a liquid crystal display panel), each pixel on the liquid crystal display panel needs to be driven through a pair of channels (that is, an odd channel and an even channel). . For a normally white liquid crystal display panel, during the data insertion mode, one of the odd channel and the even channel needs to be driven by the supply voltage, and the other is driven by the ground voltage. For example, please refer to FIG. 5, which is a schematic diagram of a dual channel data insertion circuit 510 implemented in a display device 500 in accordance with an embodiment of the present invention. When the display device 500 is in the normal mode, a control unit 513 controls the switch units 512a and 512b to transmit the video drive signals Vd1 and Vd2 generated by the signal sources 511a and 511b to the even channel 520a via the buffers 514a and 514b, respectively. With an odd channel 520b. When the display device 500 is in the data insertion mode, the control unit 513 controls the switching units 512a and 512b to transmit the control voltages Vc1 and Vc2 to the even channel 520a and the odd channel 520b via the buffers 514a and 514b, respectively.
在奇數通道與偶數通道間如果持續存在一固定的電壓差，可能會導致顯示裝置的損害並因此縮短其使用壽命。有鑑於此，本發明更進一步提供了一種方法來延長顯示裝置的使用壽命。請參照第6圖，其為依據本發明之另一實施例所實現在一顯示裝置600中的一雙通道資料***電路610的示意圖。顯示裝置600中的部分元件與顯示裝置500中相對應的元件十分相似，進一步的敘述在此便不再贅述。由圖可知，顯示裝置600另加入了一多工器單元615。在此實施例中，多工器單元615具有用以接收一控制訊號POL之一控制節點NCTRL、經過緩衝器614a耦接至第一開關單元612a的輸出節點N3之一第一輸入節點NA、經過緩衝器614b耦接至第二開關單元612b的輸出節點N3之一第二輸入節點NB、耦接至顯示裝置600的偶數通道620a之一第一輸出節點NC以及耦接至顯示裝置600的奇數通道620b之一第二輸出節點ND。多工器單元615會依據控制訊號POL來交替地(alternately)輸出第一控制電壓Vc1以及第二控制電壓Vc2給顯示裝置600的偶數通道620a以及奇數通道620b。If a fixed voltage difference persists between the odd channel and the even channel, it may cause damage to the display device and thus shorten its service life. In view of this, the present invention further provides a method for extending the life of the display device. Please refer to FIG. 6, which is a schematic diagram of a dual channel data insertion circuit 610 implemented in a display device 600 in accordance with another embodiment of the present invention. Some of the elements in the display device 600 are very similar to those in the display device 500, and further description will not be repeated here. As can be seen from the figure, the display device 600 is additionally incorporated into a multiplexer unit 615. In this embodiment, the multiplexer unit 615 has a control node N CTRL for receiving a control signal POL, a first input node NA of the output node N3 coupled to the first switch unit 612a via the buffer 614a, The buffer 614b is coupled to one of the output node N3 of the second switch unit 612b, the second input node NB, one of the even-numbered channels 620a coupled to the display device 600, the first output node NC, and the odd number coupled to the display device 600. One of the channels 620b is a second output node ND. The multiplexer unit 615 alternately outputs the first control voltage Vc1 and the second control voltage Vc2 to the even channel 620a and the odd channel 620b of the display device 600 according to the control signal POL.
請參照第7圖來了解第6圖所示之資料***電路610的操作細節。第7圖為依據本發明之一實施例而藉由第6圖所示之資料***電路610***一全灰階影像時的訊號時序示意圖，其中TP1為資料***電路610之一系統時脈，All_Grey_EN為用來觸發控制訊號613的一訊號，VCOM為顯示裝置600的一共模電壓，Veven與Vodd分別為偶數通道620a與奇數通道620b所接收到的訊號。在一時間點T1之前，顯示裝置600處於該一般模式之中，偶數通道620a與奇數通道620b分別接收來自訊號源611a與611b的訊號，而多工器單元615在該一般模式期間是等效上透明而沒有作用的。當顯示裝置600進入該資料***模式時，訊號All_Grey_EN上昇，強制開關裝置612a與612b傳送來自控制單元613的訊號給多工器單元615。由於是***一任意灰階影像，故控制單元613會傳送電壓VCM±VDIFF給多工器單元615，其中VDIFF為可任意調整的一訊號，用來表示***的該灰階影像的一灰階準位(gray level)。在一時間點T2時，多工器單元615偵測到控制訊號POL已變號，於是多工器單元615會交換其所輸出的訊號。如此一來，所有灰階影像均可以順利***且不會對顯示裝置600造成損害而影響其使用壽命。Please refer to FIG. 7 for details of the operation of the data insertion circuit 610 shown in FIG. FIG. 7 is a timing diagram of signal when a full grayscale image is inserted by the data insertion circuit 610 shown in FIG. 6 according to an embodiment of the present invention, wherein TP1 is a system clock of the data insertion circuit 610, All_Grey_EN For a signal used to trigger the control signal 613, VCOM is a common mode voltage of the display device 600, and Veven and Vodd are signals received by the even channel 620a and the odd channel 620b, respectively. Before a time point T1, the display device 600 is in the general mode, and the even channel 620a and the odd channel 620b receive signals from the signal sources 611a and 611b, respectively, and the multiplexer unit 615 is equivalent during the normal mode. Transparent and ineffective. When the display device 600 enters the data insertion mode, the signal All_Grey_EN rises, forcing the switching devices 612a and 612b to transmit the signal from the control unit 613 to the multiplexer unit 615. Because an arbitrary grayscale image is inserted, the control unit 613 transmits a voltage VCM±VDIFF to the multiplexer unit 615, wherein the VDIFF is an arbitrarily adjustable signal for indicating a gray scale of the inserted grayscale image. Gray level. At a time point T2, the multiplexer unit 615 detects that the control signal POL has changed, and the multiplexer unit 615 exchanges the signals it outputs. In this way, all grayscale images can be smoothly inserted without causing damage to the display device 600 and affecting its service life.
值得注意的是，第6圖所示的架構僅為說明之用，並非用來限制本發明的範圍。舉例來說，多工器單元615亦可如第8圖所示，設置於控制單元613與開關單元612a、612b之間，而此一設計上的變化亦落在本發明的範疇之內。It is to be noted that the architecture shown in FIG. 6 is for illustrative purposes only and is not intended to limit the scope of the invention. For example, the multiplexer unit 615 can also be disposed between the control unit 613 and the switch units 612a, 612b as shown in FIG. 8, and such a design change is also within the scope of the present invention.
綜上所述，本發明提供了一種不需要對架構作出大幅改變便可由一外接來源***一動態模糊資料的資料***裝置。如此一來，用於一顯示裝置的一時序控制晶片便可花費較少的系統資源並達到較佳的效能。In summary, the present invention provides a data insertion apparatus for inserting a dynamic fuzzy material from an external source without requiring a substantial change to the architecture. In this way, a timing control chip for a display device can consume less system resources and achieve better performance.
以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
100、200、300、400、500、600．．．顯示裝置100, 200, 300, 400, 500, 600. . . Display device
110、210、310、410．．．資料***電路110, 210, 310, 410. . . Data insertion circuit
111、511a、511b、611a、611b．．．訊號源111, 511a, 511b, 611a, 611b. . . Signal source
112、512a、512b、612a、612b．．．開關單元112, 512a, 512b, 612a, 612b. . . Switch unit
113、413、613．．．控制單元113, 413, 613. . . control unit
114、514a、514b、614a、614b．．．緩衝器114, 514a, 514b, 614a, 614b. . . buffer
120．．．通道120. . . aisle
130、430．．．電力源130, 430. . . Power source
415．．．控制電壓供給單元415. . . Control voltage supply unit
510、610．．．雙通道資料***電路510, 610. . . Dual channel data insertion circuit
520a、620a．．．偶數通道520a, 620a. . . Even channel
520b、620b．．．奇數通道520b, 620b. . . Odd channel
615．．．多工器單元615. . . Multiplexer unit
Vc．．．控制電壓Vc. . . Control voltage
Vc1．．．第一控制電壓Vc1. . . First control voltage
Vc2．．．第二控制電壓Vc2. . . Second control voltage
Vd．．．視訊驅動訊號Vd. . . Video driver signal
Vd1．．．第一視訊驅動訊號Vd1. . . First video drive signal
Vd2．．．第二視訊驅動訊號Vd2. . . Second video drive signal
Vref1．．．第一參考電壓Vref1. . . First reference voltage
Vref2．．．第二參考電壓Vref2. . . Second reference voltage
TP1．．．系統時脈TP1. . . System clock
POL．．．控制訊號POL. . . Control signal
All_Grey_EN、Veven、Vodd、VDIFF．．．訊號All_Grey_EN, Veven, Vodd, VDIFF. . . Signal
VCOM．．．共模電壓VCOM. . . Common mode voltage
N1、NA．．．第一輸入節點N1, NA. . . First input node
N2、NB．．．第二輸入節點N2, NB. . . Second input node
NC．．．第三輸入節點NC. . . Third input node
ND．．．第四輸入節點ND. . . Fourth input node
N3．．．輸出節點N3. . . Output node
NCTRL．．．控制節點N CTRL . . . Control node
第1圖為依據本發明之實施例所實現在一顯示裝置中的一資料***電路之示意圖。1 is a schematic diagram of a data insertion circuit implemented in a display device in accordance with an embodiment of the present invention.
第2圖為依據本發明之一實施例所實現在一顯示裝置中的一第一型資料***電路之示意圖。2 is a schematic diagram of a first type of data insertion circuit implemented in a display device in accordance with an embodiment of the present invention.
第3圖則是依據本發明之另一實施例所實現在顯示裝置中的一第二型資料***電路之示意圖。Figure 3 is a schematic diagram of a second type of data insertion circuit implemented in a display device in accordance with another embodiment of the present invention.
第4圖為依據本發明之另一實施例所實現在一顯示裝置中的一資料***電路之示意圖。4 is a schematic diagram of a data insertion circuit implemented in a display device in accordance with another embodiment of the present invention.
第5圖為依據本發明之一實施例所實現在一顯示裝置中的一雙通道資料***電路的示意圖。Figure 5 is a schematic diagram of a dual channel data insertion circuit implemented in a display device in accordance with an embodiment of the present invention.
第6圖為依據本發明之另一實施例所實現在一顯示裝置中的一雙通道資料***電路的示意圖。Figure 6 is a schematic diagram of a dual channel data insertion circuit implemented in a display device in accordance with another embodiment of the present invention.
第7圖為依據本發明之一實施例而藉由第6圖所示之一資料***電路***一全灰階影像時的訊號時序示意圖。FIG. 7 is a timing diagram of signals when a full grayscale image is inserted by a data insertion circuit shown in FIG. 6 according to an embodiment of the present invention.
第8圖為依據本發明之另一實施例所實現在一顯示裝置中的一雙通道資料***電路的示意圖。Figure 8 is a schematic diagram of a dual channel data insertion circuit implemented in a display device in accordance with another embodiment of the present invention.
100．．．顯示裝置100. . . Display device
110．．．資料***電路110. . . Data insertion circuit
111．．．訊號源111. . . Signal source
112．．．開關單元112. . . Switch unit
113．．．控制單元113. . . control unit
120．．．通道120. . . aisle
130．．．電力源130. . . Power source
Vc．．．控制電壓Vc. . . Control voltage
Vd．．．視訊驅動訊號Vd. . . Video driver signal
N1．．．第一輸入節點N1. . . First input node
N2．．．第二輸入節點N2. . . Second input node
N3．．．輸出節點N3. . . Output node
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| TW200929143A (en) * | 2007-12-17 | 2009-07-01 | Novatek Microelectronics Corp | Gray insertion device and liquid crystal display |
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| TW200929143A (en) * | 2007-12-17 | 2009-07-01 | Novatek Microelectronics Corp | Gray insertion device and liquid crystal display |
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