TWI813271B - Power conversion circuit, display driver chip and information processing device - Google Patents
- ️Mon Aug 21 2023
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- TWI813271B TWI813271B TW111116279A TW111116279A TWI813271B TW I813271 B TWI813271 B TW I813271B TW 111116279 A TW111116279 A TW 111116279A TW 111116279 A TW111116279 A TW 111116279A TW I813271 B TWI813271 B TW I813271B Authority
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- 2022-04-28
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Abstract
本發明主要揭示一種電源轉換電路，用以整合在一顯示驅動晶片之中，且包括：一信號切換單元、一第一電壓轉換器、一第一GPO腳位、以及一第二GPO腳位，其中，該第一GPO腳位耦接該第一電壓轉換器與該信號切換單元，且該第二GPO腳位和該信號切換單元皆耦接一1.8V的輸入電壓。依據本發明之設計，該第一GPO腳位可通過該信號切換單元接收該第一輸入電壓，並直接將該1.8V的輸入電壓輸出為一1.8V的輸出電壓。另一方面，該第一電壓轉換器透過該信號切換單元接收該1.8V的輸入電壓，並將其降壓至一1.2V的輸出電壓，接著透過第一GPO腳位輸出該1.2V的輸出電壓。簡單地說，該第一GPO腳位兼容1.8V和1.2V的電壓輸出規格。The present invention mainly discloses a power conversion circuit for integration into a display driver chip, and includes: a signal switching unit, a first voltage converter, a first GPO pin, and a second GPO pin, The first GPO pin is coupled to the first voltage converter and the signal switching unit, and the second GPO pin and the signal switching unit are both coupled to an input voltage of 1.8V. According to the design of the present invention, the first GPO pin can receive the first input voltage through the signal switching unit and directly output the 1.8V input voltage to an output voltage of 1.8V. On the other hand, the first voltage converter receives the 1.8V input voltage through the signal switching unit, steps it down to an output voltage of 1.2V, and then outputs the 1.2V output voltage through the first GPO pin. . Simply put, the first GPO pin is compatible with 1.8V and 1.2V voltage output specifications.
Description
本發明係關於顯示驅動晶片之技術領域，尤指用以整合在顯示驅動晶片之中的一種電源轉換電路。The present invention relates to the technical field of display driver chips, and in particular, to a power conversion circuit integrated in a display driver chip.
已知，搭載OLED顯示器已成為行動電子裝置(如：智慧型手機)之主流趨勢。圖1為習知的一種OLED顯示裝置的方塊圖。如圖1所示，該OLED顯示裝置1a應用於一電子裝置(如：智慧型手機)之中，且主要包括一OLED顯示面板11a和至少一顯示驅動晶片12a。值得說明的是，由於該顯示驅動晶片12a內部整合有多種功能性的數位電路和類比電路，因此該顯示驅動晶片12a必須具有一電源轉換模塊，用以將由智慧型手機的電源供應裝置(如：鋰電池)所提供的電源轉換成多種直流電壓，使該些功能性電路皆可由合適的直流電壓所驅動。It is known that mounting OLED displays has become a mainstream trend in mobile electronic devices (such as smartphones). FIG. 1 is a block diagram of a conventional OLED display device. As shown in FIG. 1 , the OLED display device 1a is used in an electronic device (such as a smart phone) and mainly includes an OLED display panel 11a and at least one display driver chip 12a. It is worth noting that since the display driver chip 12a integrates a variety of functional digital circuits and analog circuits, the display driver chip 12a must have a power conversion module to convert the power supply device of the smart phone (such as: The power provided by lithium batteries is converted into a variety of DC voltages, so that these functional circuits can be driven by appropriate DC voltages.
另一方面，該顯示驅動晶片12a通常還具有至少一個通用輸出腳位(GPO pin)，該通用輸出腳位用以輸出直流電壓，並將輸出直流電壓耦合至連接於該顯示驅動晶片12a和該OLED顯示面板11a之間的一信號傳輸介面。就現有技術而言，此通用輸出腳位所傳送之直流電壓為1.8V。然而，隨著用戶對於智慧型手機的待機時間的要求逐漸提升，除了增加鋰電池的電容量以外，降低晶片功耗同樣可以達到延長智慧型手機的待機時間之效果。因此，有必要將1.8V降至1.2V。換句話說，必須通過電路設計使該電源轉換模塊121a具有1.2V的電壓轉換單元。同時，還必須對該顯示驅動晶片12a所具有的GPO腳位進行重新設計，使其至少包含一個1.2V的GPO腳位。On the other hand, the display driver chip 12a usually also has at least one general-purpose output pin (GPO pin), which is used to output a DC voltage and couple the output DC voltage to a connection between the display driver chip 12a and the GPO pin. A signal transmission interface between OLED display panels 11a. As far as the current technology is concerned, the DC voltage transmitted by this universal output pin is 1.8V. However, as users' requirements for the standby time of smartphones gradually increase, in addition to increasing the capacity of lithium batteries, reducing chip power consumption can also achieve the effect of extending the standby time of smartphones. Therefore, it is necessary to reduce 1.8V to 1.2V. In other words, the power conversion module 121a must have a voltage conversion unit of 1.2V through circuit design. At the same time, the GPO pins of the display driver chip 12a must also be redesigned so that they include at least one 1.2V GPO pin.
由上述說明可知，本領域亟需一種電源轉換電路。It can be seen from the above description that a power conversion circuit is urgently needed in this field.
本發明之主要目的在於提供一種電源轉換電路，用以整合在一顯示驅動晶片之中，使該顯示驅動晶片具有一個可以兼容輸出1.2V/1.8V的GPO腳位。從而，包含本發明之電源轉換電路的顯示驅動晶片具有低功耗之產品優勢。The main purpose of the present invention is to provide a power conversion circuit that is integrated into a display driver chip so that the display driver chip has a GPO pin that is compatible with outputting 1.2V/1.8V. Therefore, the display driver chip including the power conversion circuit of the present invention has the product advantage of low power consumption.
為達成上述目的，本發明提出所述電源轉換電路的一實施例，其係整合在一顯示驅動晶片之中，且包括： 一信號切換單元，耦接一第一輸入電壓； 一第一電壓轉換器，耦接該信號切換單元； 一第一通用輸出腳位，耦接該第一電壓轉換器與該信號切換單元；以及 一第二通用輸出腳位，耦接該第一輸入電壓，且直接將該第一輸入電壓輸出為一第一輸出電壓； 其中，該第一通用輸出腳位通過該信號切換單元接收該第一輸入電壓，並直接將該第一輸入電壓輸出為一第一輸出電壓； 其中，該第一電壓轉換器將該第一輸入電壓降壓至一第二輸出電壓，並透過該第一通用輸出腳位輸出該第二輸出電壓。 To achieve the above object, the present invention proposes an embodiment of the power conversion circuit, which is integrated into a display driver chip and includes: a signal switching unit coupled to a first input voltage; a first voltage converter coupled to the signal switching unit; a first general-purpose output pin coupled to the first voltage converter and the signal switching unit; and a second general-purpose output pin coupled to the first input voltage and directly outputting the first input voltage as a first output voltage; Wherein, the first general-purpose output pin receives the first input voltage through the signal switching unit and directly outputs the first input voltage as a first output voltage; Wherein, the first voltage converter steps down the first input voltage to a second output voltage, and outputs the second output voltage through the first general-purpose output pin.
在可行的實施例中，前述本發明之電源轉換電路係更包括一第二電壓轉換器，用以將一第二輸入電壓轉換成一第三輸出電壓。In a possible embodiment, the power conversion circuit of the present invention further includes a second voltage converter for converting a second input voltage into a third output voltage.
在一實施例中，該信號切換單元耦接該第二輸入電壓，且進一步將該第二輸入電壓傳送至該第一通用輸出腳位，從而透過該第一通用輸出腳位將該第二輸入電壓輸出為所述第二輸出電壓。In one embodiment, the signal switching unit is coupled to the second input voltage, and further transmits the second input voltage to the first general-purpose output pin, thereby converting the second input voltage through the first general-purpose output pin. The voltage output is the second output voltage.
在一實施例中，該信號切換單元為一多工器，且該第一電壓轉換器和該第二電壓轉換器皆為選自於由低壓差線性穩壓器(Low-dropout regulator, LDO)和降壓型直流-直流電壓轉換器所組成群組之中的任一者。In one embodiment, the signal switching unit is a multiplexer, and both the first voltage converter and the second voltage converter are selected from a low-dropout linear regulator (LDO). Any of the group consisting of step-down DC-DC voltage converters.
並且，本發明同時提供一種平面顯示裝置，其包括至少一顯示驅動晶片和一顯示面板，其特徵在於，該顯示驅動晶片包含一電源轉換電路，且該電源轉換電路包括： 一信號切換單元，耦接一第一輸入電壓； 一第一電壓轉換器，耦接該信號切換單元； 一第一通用輸出腳位，耦接該第一電壓轉換器與該信號切換單元；以及 一第二通用輸出腳位，耦接該第一輸入電壓，且直接將該第一輸入電壓輸出為一第一輸出電壓； 其中，該第一通用輸出腳位通過該信號切換單元接收該第一輸入電壓，並直接將該第一輸入電壓輸出為一第一輸出電壓； 其中，該第一電壓轉換器將該第一輸入電壓降壓至一第二輸出電壓，並透過該第一通用輸出腳位輸出該第二輸出電壓。 Furthermore, the present invention also provides a flat display device, which includes at least one display driver chip and a display panel. It is characterized in that the display driver chip includes a power conversion circuit, and the power conversion circuit includes: a signal switching unit coupled to a first input voltage; a first voltage converter coupled to the signal switching unit; a first general-purpose output pin coupled to the first voltage converter and the signal switching unit; and a second general-purpose output pin coupled to the first input voltage and directly outputting the first input voltage as a first output voltage; Wherein, the first general-purpose output pin receives the first input voltage through the signal switching unit and directly outputs the first input voltage as a first output voltage; Wherein, the first voltage converter steps down the first input voltage to a second output voltage, and outputs the second output voltage through the first general-purpose output pin.
在可行的實施例中，該電源轉換電路係更包括一第二電壓轉換器，用以將一第二輸入電壓轉換成一第三輸出電壓。In a possible embodiment, the power conversion circuit further includes a second voltage converter for converting a second input voltage into a third output voltage.
在一實施例中，該信號切換單元耦接該第二輸入電壓，且進一步將該第二輸入電壓傳送至該第一通用輸出腳位，從而透過該第一通用輸出腳位將該第二輸入電壓輸出為所述第二輸出電壓。In one embodiment, the signal switching unit is coupled to the second input voltage, and further transmits the second input voltage to the first general-purpose output pin, thereby converting the second input voltage through the first general-purpose output pin. The voltage output is the second output voltage.
在一實施例中，該信號切換單元為一多工器，且該第一電壓轉換器和該第二電壓轉換器皆為選自於由低壓差線性穩壓器(Low-dropout regulator, LDO)和降壓型直流-直流電壓轉換器所組成群組之中的任一者。In one embodiment, the signal switching unit is a multiplexer, and both the first voltage converter and the second voltage converter are selected from a low-dropout linear regulator (LDO). Any of the group consisting of step-down DC-DC voltage converters.
在一實施例中，該顯示面板為選自於由OLED顯示面板、LED顯示面板、QLED顯示面板、和液晶顯示面板所組成群組之中的任一者。In one embodiment, the display panel is any one selected from the group consisting of an OLED display panel, an LED display panel, a QLED display panel, and a liquid crystal display panel.
本發明同時提供一種資訊處理裝置，其具有如前所述本發明之平面顯示裝置。在可行的實施例中，該資訊處理裝置是選自於由智慧型手錶、電子式門鎖、門禁裝置、智慧型手機、平板電腦、智慧型電視、筆記型電腦、和一體式電腦所組成群組之中的一種電子裝置。The present invention also provides an information processing device, which has the flat display device of the present invention as described above. In a feasible embodiment, the information processing device is selected from the group consisting of smart watches, electronic door locks, access control devices, smart phones, tablets, smart TVs, notebook computers, and all-in-one computers. An electronic device in the group.
為使 貴審查委員能進一步瞭解本發明之結構、特徵、目的、與其優點，茲附以圖式及較佳具體實施例之詳細說明如後。In order to enable the review committee to further understand the structure, characteristics, purpose, and advantages of the present invention, drawings and detailed descriptions of preferred embodiments are attached below.
請參閱圖2，其為本發明之一種平面顯示裝置的方塊圖。如圖2所示，該平面顯示裝置1應用於一電子裝置(如：智慧型手機)之中，且主要包括一顯示面板11和至少一顯示驅動晶片12。在可行的實施例中，該顯示面板11可以是OLED顯示面板、LED顯示面板、QLED顯示面板、或液晶顯示面板。特別地，該顯示驅動晶片12內部整合有本發明之一種電源轉換電路121。圖3即為本發明之一種電源轉換電路的方塊圖。Please refer to FIG. 2 , which is a block diagram of a flat display device according to the present invention. As shown in FIG. 2 , the flat display device 1 is used in an electronic device (such as a smart phone) and mainly includes a display panel 11 and at least one display driver chip 12 . In a feasible embodiment, the display panel 11 may be an OLED display panel, an LED display panel, a QLED display panel, or a liquid crystal display panel. In particular, the display driver chip 12 is internally integrated with a power conversion circuit 121 of the present invention. FIG. 3 is a block diagram of a power conversion circuit of the present invention.
如圖3所示，本發明之電源轉換電路121包括：一信號切換單元1211、一第一電壓轉換器1212、一第一通用輸出(GPO)腳位1213、一第二通用輸出(GPO)腳位1214、以及一第二電壓轉換器1215。其中，該信號切換單元1211耦接一第一輸入電壓(1.8V)及/或一第二輸入電壓(1.2V)。簡單地說，在智慧型手機的電源供應裝置之電源管理晶片提供3 power (即，AVDD/VCI/VDDI)的情況下，該信號切換單元1211會接收到1.8V的輸入電壓，即所述第一輸入電壓。另一方面，若智慧型手機的電源供應裝置之電源管理晶片提供4 power (即，AVDD/VCI/VDDI/DVDD)，則該信號切換單元1211會接收到1.2V的輸入電壓，即所述第二輸入電壓。As shown in Figure 3, the power conversion circuit 121 of the present invention includes: a signal switching unit 1211, a first voltage converter 1212, a first general output (GPO) pin 1213, and a second general output (GPO) pin. bit 1214, and a second voltage converter 1215. The signal switching unit 1211 is coupled to a first input voltage (1.8V) and/or a second input voltage (1.2V). Simply put, when the power management chip of the smart phone's power supply device provides 3 powers (i.e., AVDD/VCI/VDDI), the signal switching unit 1211 will receive an input voltage of 1.8V, that is, the third power an input voltage. On the other hand, if the power management chip of the smart phone's power supply device provides 4 powers (i.e., AVDD/VCI/VDDI/DVDD), the signal switching unit 1211 will receive an input voltage of 1.2V, that is, the third 2 input voltage.
更詳細地說明，如圖3所示，該第一電壓轉換器1212耦接該信號切換單元1211，且該第一GPO腳位1213耦接該第一電壓轉換器1212與該信號切換單元1211。並且，該第二GPO腳位1214耦接該第一輸入電壓，且可以直接將該第一輸入電壓輸出為1.8V的輸出電壓，在此稱為第一輸出電壓(1.8V)。依據本發明之設計，該第一GPO腳位1213通過該信號切換單元1211接收該第一輸入電壓，並直接將該第一輸入電壓輸出為所述第一輸出電壓。可選地，該第一電壓轉換器1212將該第一輸入電壓降壓至1.2V的輸出電壓，在此稱為第二輸出電壓(1.2V)，並接著透過該第一GPO腳位1213輸出該第二輸出電壓。簡單地說，該第一GPO腳位1213兼容1.8V和1.2V的電壓輸出規格。To explain in more detail, as shown in FIG. 3 , the first voltage converter 1212 is coupled to the signal switching unit 1211 , and the first GPO pin 1213 is coupled to the first voltage converter 1212 and the signal switching unit 1211 . Furthermore, the second GPO pin 1214 is coupled to the first input voltage, and can directly output the first input voltage as an output voltage of 1.8V, which is referred to as the first output voltage (1.8V) here. According to the design of the present invention, the first GPO pin 1213 receives the first input voltage through the signal switching unit 1211 and directly outputs the first input voltage as the first output voltage. Optionally, the first voltage converter 1212 steps down the first input voltage to an output voltage of 1.2V, here referred to as the second output voltage (1.2V), and then outputs it through the first GPO pin 1213 the second output voltage. Simply put, the first GPO pin 1213 is compatible with voltage output specifications of 1.8V and 1.2V.
更詳細地說明，在智慧型手機的電源供應裝置之電源管理晶片提供4 power (即，AVDD/VCI/VDDI/DVDD)的情況下，第二輸入電壓(1.2V)會被傳送至該信號切換單元1211和該第二電壓轉換器1215。之後，該第二電壓轉換器1215會將該第二輸入電壓轉換成0.9V的輸出電壓，在此稱為第三輸出電壓。應可理解，該顯示驅動晶片12內部通常整合有多種功能性的邏輯電路，這些邏輯電路的工作電壓(或稱驅動電壓)即為所述第三輸出電壓(0.9V)。To explain in more detail, when the power management chip of the smart phone's power supply device provides 4 power (ie, AVDD/VCI/VDDI/DVDD), the second input voltage (1.2V) will be sent to the signal switch unit 1211 and the second voltage converter 1215. Afterwards, the second voltage converter 1215 converts the second input voltage into an output voltage of 0.9V, which is referred to as the third output voltage here. It should be understood that the display driving chip 12 usually integrates a variety of functional logic circuits, and the working voltage (or driving voltage) of these logic circuits is the third output voltage (0.9V).
另一方面，如圖3所示，該信號切換單元1211耦接該第二輸入電壓，且進一步將該第二輸入電壓傳送至該第一通用輸出腳位1213，從而透過該第一通用輸出腳位1213將該第二輸入電壓輸出為所述第二輸出電壓。On the other hand, as shown in FIG. 3 , the signal switching unit 1211 is coupled to the second input voltage, and further transmits the second input voltage to the first universal output pin 1213, thereby through the first universal output pin Bit 1213 outputs the second input voltage as the second output voltage.
補充說明的是，在可行的實施例中，圖3所示之信號切換單元1211為一多工器，且可以採用低壓差線性穩壓器(Low-dropout regulator, LDO)或降壓型直流-直流電壓轉換器作為該第一電壓轉換器1212和該第二電壓轉換器1215。It should be added that in a feasible embodiment, the signal switching unit 1211 shown in Figure 3 is a multiplexer, and a low-dropout linear regulator (Low-dropout regulator, LDO) or a step-down DC- DC voltage converters serve as the first voltage converter 1212 and the second voltage converter 1215.
如此，上述已完整且清楚地說明本發明之一種電源轉換電路；並且，經由上述可得知本發明係具有下列優點：In this way, the above has completely and clearly described a power conversion circuit of the present invention; and from the above, it can be known that the present invention has the following advantages:
(1)本發明揭示一種電源轉換電路，用以整合在一顯示驅動晶片之中，使該顯示驅動晶片具有一個可以兼容輸出1.2V/1.8V的GPO腳位。從而，包含本發明之電源轉換電路的顯示驅動晶片具有低功耗之產品優勢。(1) The present invention discloses a power conversion circuit that is integrated into a display driver chip so that the display driver chip has a GPO pin that is compatible with outputting 1.2V/1.8V. Therefore, the display driver chip including the power conversion circuit of the present invention has the product advantage of low power consumption.
(2)本發明同時提供一種平面顯示裝置，其包括至少一顯示驅動晶片和一顯示面板，其特徵在於，該顯示驅動晶片包含如前所述本發明之電源轉換電路。(2) The present invention also provides a flat display device, which includes at least one display driver chip and a display panel, characterized in that the display driver chip includes the power conversion circuit of the present invention as described above.
(3)本發明同時提供一種資訊處理裝置，其具有如前所述本發明之平面顯示裝置。並且，該資訊處理裝置是選自於由智慧型手錶、電子式門鎖、門禁裝置、智慧型手機、平板電腦、智慧型電視、筆記型電腦、和一體式電腦所組成群組之中的一種電子裝置。(3) The present invention also provides an information processing device, which has the flat display device of the present invention as described above. Moreover, the information processing device is one selected from the group consisting of smart watches, electronic door locks, access control devices, smart phones, tablet computers, smart TVs, notebook computers, and all-in-one computers. electronic devices.
必須加以強調的是，前述本案所揭示者乃為較佳實施例，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。It must be emphasized that the foregoing disclosed in this case are preferred embodiments. Any partial changes or modifications derived from the technical ideas of this case and easily inferred by those familiar with the art do not deviate from the patent of this case. category of rights.
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。To sum up, regardless of the purpose, means and effects of this case, it shows that it is completely different from the conventional technology, and that the invention is practical first, and indeed meets the patent requirements for inventions. I sincerely ask the review committee to take a clear look and grant the patent as soon as possible for your benefit. Society is a prayer for the Supreme Being.
1a:OLED顯示裝置1a:OLED display device
11a:OLED顯示面板11a:OLED display panel
12a:顯示驅動晶片12a: Display driver chip
121a:電源轉換模塊121a: Power conversion module
1:平面顯示裝置1: Flat display device
11:顯示面板11:Display panel
12:顯示驅動晶片12:Display driver chip
121:電源轉換電路121:Power conversion circuit
1211:信號切換單元1211: Signal switching unit
1212:第一電壓轉換器1212: First voltage converter
1213:第一GPO腳位1213: First GPO pin
1214:第二GPO腳位1214: Second GPO pin
1215:第二電壓轉換器1215: Second voltage converter
圖1為習知的一種OLED顯示裝置的方塊圖； 圖2為本發明之一種平面顯示裝置的方塊圖；以及 圖3為本發明之一種電源轉換電路的方塊圖。 Figure 1 is a block diagram of a conventional OLED display device; Figure 2 is a block diagram of a flat display device according to the present invention; and Figure 3 is a block diagram of a power conversion circuit of the present invention.
121:電源轉換電路 121:Power conversion circuit
1211:信號切換單元 1211: Signal switching unit
1212:第一電壓轉換器 1212: First voltage converter
1213:第一GPO腳位 1213: First GPO pin
1214:第二GPO腳位 1214: Second GPO pin
1215:第二電壓轉換器 1215: Second voltage converter
Claims (6)
一種電源轉換電路，其係整合在一顯示驅動晶片之中，且包括：一第一通用輸出腳位及一第二通用輸出腳位；一信號切換單元，耦接一第一輸入電壓及一第二輸入電壓以多工地提供該第一輸入電壓或該第二輸入電壓，且該第二通用輸出腳位耦接該第一輸入電壓並直接將該第一輸入電壓輸出為一第一輸出電壓；一第一電壓轉換器，耦接該信號切換單元，用以將該第一輸入電壓降壓至一第二輸出電壓，並透過該第一通用輸出腳位輸出該第二輸出電壓；以及一第二電壓轉換器，用以將該第二輸入電壓轉換成一第三輸出電壓；其中，該信號切換單元將該第一輸入電壓傳送至該第一電壓轉換器或直接傳送至該第一通用輸出腳位，或將該第二輸入電壓直接傳送至該第一通用輸出腳位。 A power conversion circuit is integrated into a display driver chip and includes: a first general-purpose output pin and a second general-purpose output pin; a signal switching unit coupled to a first input voltage and a first Two input voltages provide the first input voltage or the second input voltage in multiple ways, and the second general-purpose output pin is coupled to the first input voltage and directly outputs the first input voltage as a first output voltage; a first voltage converter coupled to the signal switching unit for stepping down the first input voltage to a second output voltage and outputting the second output voltage through the first general-purpose output pin; and a first Two voltage converters for converting the second input voltage into a third output voltage; wherein the signal switching unit transmits the first input voltage to the first voltage converter or directly to the first general output pin bit, or transmit the second input voltage directly to the first general-purpose output pin. 如請求項1所述之電源轉換電路，其中，該信號切換單元為一多工器，且該第一電壓轉換器和該第二電壓轉換器皆為選自於由低壓差線性穩壓器和降壓型直流-直流電壓轉換器所組成群組之中的任一者。 The power conversion circuit of claim 1, wherein the signal switching unit is a multiplexer, and the first voltage converter and the second voltage converter are selected from the group consisting of a low dropout linear regulator and a Any of the group of step-down DC-DC voltage converters. 一種平面顯示裝置，其包括至少一顯示驅動晶片和一顯示面板，其特徵在於，該顯示驅動晶片包含一電源轉換電路，且該電源轉換電路包括：一第一通用輸出腳位及一第二通用輸出腳位；一信號切換單元，耦接一第一輸入電壓及一第二輸入電壓以多工地提供該第一輸入電壓或該第二輸入電壓，且該第二通用輸出腳位耦接該第一輸入電壓並直接將該第一輸入電壓輸出為一第一輸出電壓；一第一電壓轉換器，耦接該信號切換單元，用以將該第一輸入電壓降壓至一第二輸出電壓，並透過該第一通用輸出腳位輸出該第二輸出電壓；以及一第二電壓轉換器，用以將該第二輸入電壓轉換成一第三輸出電壓；其中，該信號切換單元將該第一輸入電壓傳送至該第一電壓轉換器或直接傳送至該第一通用輸出腳位，或將該第二輸入電壓直接傳送至該第一通用輸出腳位。 A flat display device, which includes at least one display driver chip and a display panel. It is characterized in that the display driver chip includes a power conversion circuit, and the power conversion circuit includes: a first general-purpose output pin and a second general-purpose output pin. Output pin; a signal switching unit coupled to a first input voltage and a second input voltage to provide the first input voltage or the second input voltage in multiple ways, and the second general-purpose output pin is coupled to the third input voltage. an input voltage and directly output the first input voltage to a first output voltage; a first voltage converter, coupled to the signal switching unit, for stepping down the first input voltage to a second output voltage, and output the second output voltage through the first general-purpose output pin; and a second voltage converter for converting the second input voltage into a third output voltage; wherein the signal switching unit converts the first input voltage into a third output voltage. The voltage is transmitted to the first voltage converter or directly to the first universal output pin, or the second input voltage is directly transmitted to the first universal output pin. 如請求項3所述之平面顯示裝置，其中，該信號切換單元為一多工器，且該第一電壓轉換器和該第二電壓轉換器皆為選自於由低壓差線性穩壓器和降壓型直流-直流電壓轉換器所組成群組之中的任一者。 The flat display device of claim 3, wherein the signal switching unit is a multiplexer, and the first voltage converter and the second voltage converter are selected from the group consisting of a low dropout linear voltage regulator and a Any of the group of step-down DC-DC voltage converters. 如請求項3所述之平面顯示裝置，其中，該顯示面板為選自於由OLED顯示面板、LED顯示面板、QLED顯示面板、和液晶顯示面板所組成群組之中的任一者。 The flat display device of claim 3, wherein the display panel is any one selected from the group consisting of an OLED display panel, an LED display panel, a QLED display panel, and a liquid crystal display panel. 一種資訊處理裝置，其特徵在於，具有如請求項3至請求項5中任一項所述之平面顯示裝置。An information processing device, characterized by having a flat display device as described in any one of claims 3 to 5.
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