TWI699752B - Display driver, display panel and information processing device - Google Patents
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Abstract
一種顯示驅動器,用以驅動一TFT顯示裝置,該TFT顯示裝置具有一基板及在該基板上集成之一行掃描電路、一源極通道開關電路及一TFT顯示結構,且該顯示驅動器的特徵在於:該顯示驅動器具有一多工器,其中,該多工器具有複數個輸入端、一控制埠及至少一個輸出端,所述複數個輸入端係用以與n個閘極掃描時鐘信號、一個幀啟始脈衝信號、一個發光啟始脈衝信號及L個開關信號耦接,n、L皆為正整數,該控制埠係用以與至少一選擇信號耦接,所述至少一個輸出端係用以提供至少一輸出信號並和該基板上之複數條走線連接,且所述複數條走線係和該行掃描電路或該源極通道開關電路連接。A display driver for driving a TFT display device. The TFT display device has a substrate and a line scanning circuit, a source channel switch circuit and a TFT display structure are integrated on the substrate, and the display driver is characterized by: The display driver has a multiplexer, wherein the multiplexer has a plurality of input terminals, a control port and at least one output terminal, and the plurality of input terminals are used to communicate with n gate scanning clock signals and one frame A start pulse signal, a light-emitting start pulse signal and L switch signals are coupled, n and L are all positive integers, the control port is used to couple with at least one selection signal, and the at least one output terminal is used to At least one output signal is provided and connected to a plurality of wires on the substrate, and the plurality of wires are connected to the row scanning circuit or the source channel switch circuit.
Description
本發明係關於一種顯示驅動器,特別是關於用以驅動具有GOA之顯示裝置的顯示驅動器。The present invention relates to a display driver, particularly to a display driver for driving a display device with GOA.
GOA(gate driver on array;板上閘極驅動電路)係集成在一顯示裝置之一基板上的驅動電路,一般會設有一行掃描電路和一源極通道開關電路,其中,該行掃描電路係用以依一工作時序驅動一TFT顯示面板的各行TFT(thin film transistor;薄膜電晶體)的閘極以導通各行TFT;及該源極通道開關電路係用以搭配該工作時序將源極資料經由各行導通的TFT傳送至該TFT顯示面板的各畫素單元。GOA (gate driver on array; on-board gate driver circuit) is a driver circuit integrated on a substrate of a display device. Generally, a row scanning circuit and a source channel switching circuit are provided. Among them, the row scanning circuit is Used to drive the gates of each row of TFTs (thin film transistors) of a TFT display panel according to a working sequence to turn on each row of TFTs; and the source channel switch circuit is used to match the working sequence to pass source data through The conductive TFTs of each row are transmitted to each pixel unit of the TFT display panel.
另外,一顯示驅動器會透過多條掃描控制信號線和集成在該基板上的GOA連接以驅動該TFT顯示面板,從而顯示一畫面。然而,當所述掃描控制信號線的數目很大時,該行掃描電路和該源極通道開關電路在該基板上的走線空間很可能會不足。In addition, a display driver is connected to the GOA integrated on the substrate through a plurality of scanning control signal lines to drive the TFT display panel to display a picture. However, when the number of the scan control signal lines is large, the wiring space of the row scan circuit and the source channel switch circuit on the substrate may be insufficient.
為解決上述問題,習知乃有在一顯示驅動器內設置一行掃描控制信號多工器及多個源極通道控制信號多工器,以減少輸出接腳的技術方案。請參照圖1,其為用以驅動一TFT顯示裝置20之一習知顯示驅動器10之一多工接腳方案的電路示意圖。如圖1所示,顯示驅動器10具有一第一多工器11及12個第二多工器12,且TFT顯示裝置20在一基板上形成有一行掃描電路21、一源極通道開關電路22及一TFT顯示結構23,其中,第一多工器11具有複數個第一輸入端、一第一控制埠及一個第一輸出端,所述複數個第一輸入端係用以與n個閘極掃描時鐘信號GCK
1-GCK
n、一個幀啟始脈衝信號STV及一個發光啟始脈衝信號STE耦接,n為正整數,該第一控制埠係用以與至少一第一選擇信號SEL(1)耦接,所述第一輸出端係用以提供一第一輸出信號CGOUT,且第一多工器11係依所述至少一第一選擇信號SEL(1)的控制選擇所述複數個第一輸入端中的一輸入端以和該第一輸出端電氣連接;以及各第二多工器12均具有m個第二輸入端、一第二控制埠及一個第二輸出端,m為大於1的正整數,所述m個第二輸入端係用以與m個開關信號(例如SW
1-SW
m)耦接,該第二控制埠係用以與至少一第二選擇信號SEL(j)耦接,j為介於2和13間之整數,所述第二輸出端係用以提供一第二輸出信號MUX(k),k為介於1和12間之整數,且各第二多工器12均係依所述至少一第二選擇信號SEL(j)的控制選擇所述複數個第二輸入端中的一輸入端以和該第二輸出端電氣連接。於操作時,TFT顯示裝置20內之行掃描電路21會對第一輸出信號CGOUT進行一第一解多工操作以逐行驅動TFT顯示結構23,且TFT顯示裝置20內之源極通道開關電路22會對第二輸出信號MUX(1)-MUX(12) 進行一第二解多工操作以依序開啟各畫素的源極資料通道,從而使TFT顯示裝置20的顯示幕呈現一畫面。
In order to solve the above-mentioned problems, there is a conventional technical solution in which a line scan control signal multiplexer and a plurality of source channel control signal multiplexers are arranged in a display driver to reduce output pins. Please refer to FIG. 1, which is a schematic circuit diagram of a multiplexed pin scheme of a
然而,當顯示幕需高解析度時,顯示驅動器10的第二輸出信號MUX(k)的數目會變多,而如果此時基板的面積須被限制在一小範圍(例如智慧型手錶的顯示幕)內,則連接至行掃描電路21的第一輸出信號CGOUT極可能和連接至源極通道開關電路22的第二輸出信號MUX(k)產生交叉,從而使該基板上的信號走線無法完成。However, when the display screen requires high resolution, the number of second output signals MUX(k) of the
為解決上述問題,本領域亟需一新穎的顯示幕掃描驅動方法。In order to solve the above problems, a novel scanning driving method of the display screen is urgently needed in the art.
本發明之一目的在於揭露一種顯示驅動器,其可透過一多工器的輸出分時承載行掃描控制信號和源極通道控制信號等兩種不同屬性的信號,以提升一顯示器基板上的GOA電路的元件布局和信號走線的自由度,從而適應不同顯示規格的顯示面板的要求。One purpose of the present invention is to disclose a display driver that can carry two different attributes of the line scan control signal and the source channel control signal through the output of a multiplexer, so as to improve the GOA circuit on a display substrate The layout of components and the degree of freedom of signal routing can adapt to the requirements of display panels of different display specifications.
本發明之另一目的在於揭露一種顯示驅動器,其可透過一多工器的多個輸出端輸出分時承載行掃描控制信號和源極通道控制信號等兩種不同屬性的信號,以在提升一顯示器基板上的GOA電路的元件布局和信號走線的自由度的情況下,滿足一顯示面板的顯示資料傳輸頻寬的要求。Another object of the present invention is to disclose a display driver that can output signals with two different attributes, such as a horizontal scan control signal and a source channel control signal, in a time-sharing manner through multiple output terminals of a multiplexer, so as to improve one In the case of the component layout of the GOA circuit on the display substrate and the degree of freedom of signal routing, it meets the requirements of the display data transmission bandwidth of a display panel.
為達上述目的,一種顯示驅動器乃被提出,其係用以驅動一TFT顯示裝置,該TFT顯示裝置具有一基板及在該基板上集成之一行掃描電路、一源極通道開關電路及一TFT顯示結構,且該顯示驅動器的特徵在於:To achieve the above objective, a display driver is proposed, which is used to drive a TFT display device having a substrate and integrating a row scanning circuit, a source channel switching circuit and a TFT display on the substrate Structure, and the display driver is characterized by:
該顯示驅動器具有一多工器,其中,該多工器具有複數個輸入端、一控制埠及至少一個輸出端,所述複數個輸入端係用以與n個閘極掃描時鐘信號、一個幀啟始脈衝信號、一個發光啟始脈衝信號及L個開關信號耦接,n、L皆為正整數,該控制埠係用以與至少一選擇信號耦接,所述至少一個輸出端係用以提供至少一輸出信號並和該基板上之複數條走線連接,所述複數條走線係和該行掃描電路或該源極通道開關電路連接,且該多工器係依所述至少一選擇信號的控制選擇所述複數個輸入端中的一輸入端以和該輸出端電氣連接。The display driver has a multiplexer, wherein the multiplexer has a plurality of input terminals, a control port and at least one output terminal, and the plurality of input terminals are used to communicate with n gate scanning clock signals and one frame The start pulse signal, a light-emitting start pulse signal and L switch signals are coupled, n and L are all positive integers, the control port is used for coupling with at least one selection signal, and the at least one output terminal is used for Provide at least one output signal and connect it to a plurality of traces on the substrate, the plurality of traces are connected to the row scanning circuit or the source channel switch circuit, and the multiplexer is selected according to the at least one The signal control selects an input terminal of the plurality of input terminals to be electrically connected to the output terminal.
在一實施例中,該TFT顯示結構係一液晶顯示結構。In one embodiment, the TFT display structure is a liquid crystal display structure.
在一實施例中,該TFT顯示結構係一有機發光二極體顯示結構。In one embodiment, the TFT display structure is an organic light emitting diode display structure.
為達上述目的,本發明進一步揭露一種顯示面板,其具有一TFT顯示裝置及用以驅動該TFT顯示裝置之一顯示驅動器,該TFT顯示裝置具有一基板及在該基板上集成之一行掃描電路、一源極通道開關電路及一TFT顯示結構,且該顯示驅動器的特徵在於:To achieve the above objective, the present invention further discloses a display panel, which has a TFT display device and a display driver for driving the TFT display device. The TFT display device has a substrate and a row scanning circuit integrated on the substrate. A source channel switch circuit and a TFT display structure, and the display driver is characterized by:
該顯示驅動器具有一多工器,其中,該多工器具有複數個輸入端、一控制埠及至少一個輸出端,所述複數個輸入端係用以與n個閘極掃描時鐘信號、一個幀啟始脈衝信號、一個發光啟始脈衝信號及L個開關信號耦接,n、L皆為正整數,該控制埠係用以與至少一選擇信號耦接,所述至少一個輸出端係用以提供至少一輸出信號並和該基板上之複數條走線連接,所述複數條走線係和該行掃描電路或該源極通道開關電路連接,且該多工器係依所述至少一選擇信號的控制選擇所述複數個輸入端中的一輸入端以和該輸出端電氣連接。The display driver has a multiplexer, wherein the multiplexer has a plurality of input terminals, a control port and at least one output terminal, and the plurality of input terminals are used to communicate with n gate scanning clock signals and one frame The start pulse signal, a light-emitting start pulse signal and L switch signals are coupled, n and L are all positive integers, the control port is used for coupling with at least one selection signal, and the at least one output terminal is used for Provide at least one output signal and connect it to a plurality of traces on the substrate, the plurality of traces are connected to the row scanning circuit or the source channel switch circuit, and the multiplexer is selected according to the at least one The signal control selects an input terminal of the plurality of input terminals to be electrically connected to the output terminal.
在可能的實施例中,所述之顯示面板可為陰極射線管顯示面板、數位光處理顯示面板、液晶顯示器、發光二極體顯示面板、有機發光二極體顯示面板、量子點發光二極體顯示面板、Mirco-LED顯示面板或Mini-LED顯示面板。In possible embodiments, the display panel may be a cathode ray tube display panel, a digital light processing display panel, a liquid crystal display, a light emitting diode display panel, an organic light emitting diode display panel, a quantum dot light emitting diode Display panel, Mirco-LED display panel or Mini-LED display panel.
此外,本發明更揭露一種資訊處理裝置,其具有一中央處理單元及如前述的顯示面板,其中該中央處理單元係用以與該顯示驅動器通信。In addition, the present invention further discloses an information processing device having a central processing unit and the aforementioned display panel, wherein the central processing unit is used to communicate with the display driver.
在一實施例中,所述之資訊處理裝置係一智慧型手機。In one embodiment, the information processing device is a smart phone.
在一實施例中,所述之資訊處理裝置係一可攜式電腦。In one embodiment, the information processing device is a portable computer.
為使 貴審查委員能進一步瞭解本發明之結構、特徵及其目的,茲附以圖式及較佳具體實施例之詳細說明如後。In order to enable your reviewer to further understand the structure, features and purpose of the present invention, drawings and detailed descriptions of preferred specific embodiments are attached as follows.
為解決顯示裝置之基板上的信號走線空間不足問題,本發明乃將一顯示驅動器內之多個行掃描控制信號和多個源極通道控制信號統一以一多工器管轄,以進一步減少顯示驅動器的輸出接腳。也就是說,透過以一多工器的輸出信號分時承載行掃描控制信號和源極通道控制信號等兩種不同屬性的信號,該輸出信號即可不受限地連接至GOA內之行掃描控制電路或源極通道控制電路。In order to solve the problem of insufficient signal wiring space on the substrate of the display device, the present invention integrates multiple line scan control signals and multiple source channel control signals in a display driver into a multiplexer to further reduce the display The output pin of the driver. That is to say, by using the output signal of a multiplexer to time-sharing two signals with different attributes, such as the horizontal scanning control signal and the source channel control signal, the output signal can be connected to the horizontal scanning control in the GOA without limitation. Circuit or source channel control circuit.
請參照圖2,其為本發明用以驅動一TFT顯示裝置200之一顯示驅動器100之一多工接腳實施例的電路示意圖。如圖2所示,顯示驅動器100具有一多工器110,且TFT顯示裝置200在一基板上形成有一行掃描電路210、一源極通道開關電路220及一TFT顯示結構230,其中,多工器110具有複數個輸入端、一控制埠及至少一個輸出端,所述複數個輸入端係用以與n個閘極掃描時鐘信號GCK
1-GCK
n、一個幀啟始脈衝信號STV、一個發光啟始脈衝信號STE及L個開關信號SW
1-SW
L耦接,n、L皆為正整數,該控制埠係用以與至少一選擇信號SEL耦接,所述至少一個輸出端係用以提供至少一輸出信號VSR並和該基板上之複數條走線連接,所述複數條走線係和行掃描電路210或源極通道開關電路220連接,且多工器110係依所述至少一選擇信號SEL的控制選擇所述複數個輸入端中的一輸入端以和該輸出端電氣連接。
Please refer to FIG. 2, which is a schematic circuit diagram of a multiplexed pin embodiment of a
於操作時,TFT顯示裝置200內之行掃描電路210可藉由對至少一輸出信號VSR進行一第一解多工操作以逐行驅動TFT顯示結構230,且TFT顯示裝置200內之源極通道開關電路220亦可藉由對至少一輸出信號VSR進行一第二解多工操作以依序開啟各畫素的源極資料通道,從而使TFT顯示裝置200的顯示幕呈現一畫面。During operation, the
依此,當顯示幕需高解析度且基板的面積須被限制在一小範圍(例如智慧型手錶的顯示幕)內時,由於顯示驅動器100的至少一輸出信號VSR既可連接至行掃描電路210亦可連接至源極通道開關電路220,故可大幅提高TFT顯示裝置200的基板上的元件布局和信號走線的自由度。另外,輸出信號VSR的數量可根據顯示幕的資料傳輸頻寬需求做調整:當顯示幕需要較大的資料傳輸頻寬時,可設置較多的輸出信號VSR;而當顯示幕不需要大的資料傳輸頻寬時,可設置較少的輸出信號VSR。Accordingly, when the display screen requires high resolution and the area of the substrate must be limited to a small range (such as the display screen of a smart watch), at least one output signal VSR of the
依上述之原理說明,本發明進一步提出一種顯示面板。請參照圖3,其繪示本發明之顯示面板之一實施例方塊圖。如圖3所示,一顯示面板300具有如前述的顯示驅動器100及TFT顯示裝置200。顯示面板可為,例如但不限於陰極射線管(cathode ray tube,CRT)顯示面板、數位光處理(digital light processing;DLP)顯示面板、液晶顯示器(liquid crystal display;LCD)、發光二極體(light emitting diode;LED)顯示面板、有機發光二極體(organic light emitting diode;OLED)顯示面板、量子點發光二極體(quantum dot light emitting diode;QLED)顯示面板、Mirco-LED顯示面板或Mini-LED顯示面板。Based on the above principle description, the present invention further provides a display panel. Please refer to FIG. 3, which shows a block diagram of an embodiment of the display panel of the present invention. As shown in FIG. 3, a
依上述之原理說明,本發明進一步提出一種資訊處理裝置。請參照圖4,其繪示本發明之資訊處理裝置之一實施例方塊圖。如圖4所示,一資訊處理裝置400具有一中央處理單元410及如前述的顯示面板300,其中,中央處理單元410係用以與顯示驅動器100通信。Based on the above principle description, the present invention further provides an information processing device. Please refer to FIG. 4, which shows a block diagram of an embodiment of the information processing device of the present invention. As shown in FIG. 4, an
藉由前述所揭露的設計,本發明乃具有以下的優點:With the design disclosed above, the present invention has the following advantages:
1. 本發明的顯示驅動器可透過一多工器的輸出分時承載行掃描控制信號和源極通道控制信號等兩種不同屬性的信號,以提升一顯示器基板上的GOA電路的元件布局和信號走線的自由度,從而適應不同顯示規格的顯示面板的要求。1. The display driver of the present invention can carry two different attribute signals, such as line scan control signal and source channel control signal, through the output of a multiplexer, so as to improve the component layout and signal of the GOA circuit on a display substrate. The degree of freedom of wiring can adapt to the requirements of display panels of different display specifications.
2. 本發明的顯示驅動器可透過一多工器的多個輸出端輸出分時承載行掃描控制信號和源極通道控制信號等兩種不同屬性的信號,以在提升一顯示器基板上的GOA電路的元件布局和信號走線的自由度的情況下,滿足一顯示面板的顯示資料傳輸頻寬的要求。2. The display driver of the present invention can output signals with two different attributes, such as a line scan control signal and a source channel control signal, in a time-sharing manner through multiple output terminals of a multiplexer, so as to improve the GOA circuit on a display substrate In the case of the component layout and the degree of freedom of signal routing, it meets the requirement of the display data transmission bandwidth of a display panel.
本案所揭示者,乃較佳實施例,舉凡局部之變更或修飾而源於本案之技術思想而為熟習該項技藝之人所易於推知者,俱不脫本案之專利權範疇。The disclosure in this case is a preferred embodiment, and any partial changes or modifications that are derived from the technical ideas of the case and can be easily inferred by those familiar with the art will not deviate from the scope of the patent right of the case.
綜上所陳,本案無論目的、手段與功效,皆顯示其迥異於習知技術,且其首先發明合於實用,確實符合發明之專利要件,懇請 貴審查委員明察,並早日賜予專利俾嘉惠社會,是為至禱。In summary, regardless of the purpose, means and effect of this case, it is shown that it is very different from the conventional technology, and its first invention is suitable for practicality, and it does meet the patent requirements of the invention. I sincerely ask the examiner to check it out and grant the patent as soon as possible. Society is for the best prayer.
10:顯示驅動器 11:第一多工器 12:第二多工器 20:TFT顯示裝置 21:行掃描電路 22:源極通道開關電路 23:TFT顯示結構 100:顯示驅動器 110:多工器 200:TFT顯示裝置 210:行掃描電路 220:源極通道開關電路 230:TFT顯示結構 300:顯示面板 400:資訊處理裝置 410:中央處理單元10: Display driver 11: The first multiplexer 12: Second multiplexer 20: TFT display device 21: Line scanning circuit 22: Source channel switch circuit 23: TFT display structure 100: display driver 110: Multiplexer 200: TFT display device 210: Line scanning circuit 220: source channel switch circuit 230: TFT display structure 300: display panel 400: Information processing device 410: Central Processing Unit
圖1為用以驅動一TFT顯示裝置之一習知顯示驅動器之一多工接腳方案的電路示意圖。 圖2為本發明用以驅動一TFT顯示裝置之一顯示驅動器之一多工接腳實施例的電路示意圖。 圖3繪示本發明之顯示面板之一實施例方塊圖。 圖4繪示本發明之資訊處理裝置之一實施例方塊圖。FIG. 1 is a schematic circuit diagram of a multiplex pin scheme of a conventional display driver for driving a TFT display device. 2 is a schematic circuit diagram of an embodiment of a multiplexed pin of a display driver for driving a TFT display device according to the present invention. FIG. 3 shows a block diagram of an embodiment of the display panel of the present invention. FIG. 4 shows a block diagram of an embodiment of the information processing device of the present invention.
100:顯示驅動器 100: display driver
110:多工器 110: Multiplexer
200:TFT顯示裝置 200: TFT display device
210:行掃描電路 210: Line scanning circuit
220:源極通道開關電路 220: source channel switch circuit
230:TFT顯示結構 230: TFT display structure
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TW201322227A (en) * | 2011-11-18 | 2013-06-01 | Au Optronics Corp | Display panel and source driving structure thereof |
TW201351247A (en) * | 2012-06-05 | 2013-12-16 | Acer Inc | Driving method for touch panel and touch-sensing device thereof |
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