KR100989708B1 - Dual display panel control apparatus for mobile communication device - Google Patents

Dual display panel control apparatus for mobile communication device Download PDF

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KR100989708B1
KR100989708B1 KR1020040004812A KR20040004812A KR100989708B1 KR 100989708 B1 KR100989708 B1 KR 100989708B1 KR 1020040004812 A KR1020040004812 A KR 1020040004812A KR 20040004812 A KR20040004812 A KR 20040004812A KR 100989708 B1 KR100989708 B1 KR 100989708B1
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oled
oled panel
panel
converter
driving
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KR20050076957A (en
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김성배
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엘지전자 주식회사
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/04—Display device controller operating with a plurality of display units

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

본 발명은 이중 유기 E/L(Dual OLED : Organic Electro Luminescent Display) 패널을 사용하는 이동 통신 단말기에 있어서, 각 유기 E/L 패널을 제어하기 위한 구동 회로를 공동으로 사용할 수 있도록 구성하여, 단말기의 제작 단가 및 전력 소모를 낮출 수 있도록 하는 이동 통신 단말기의 이중 디스플레이 패널 제어 장치에 관한 것으로, 메인 OLED 패널 및 서브 OLED 패널을 공동으로 구동하기 위한 OLED 패널 구동 회로부를 구비하고, 데이터 신호 및 OLED 패널 제어신호를 상기 각 OLED 패널에 공통으로 인가하도록 구성하고, 상기 OLED 패널 구동 회로부에 DC/DC 컨버터를 포함하며, 상기 DC/DC 컨버터의 출력측 궤환 저항비를 선택적으로 조절하여 출력전압(OLED 구동전압)을 제어하기 위한 궤환 저항비 제어부를 포함하여 구성함으로써 달성할 수 있다.The present invention is a mobile communication terminal using a dual organic E / L (Dual OLED: Panel), it is configured so that the drive circuit for controlling each organic E / L panel can be used jointly, The present invention relates to a dual display panel control device of a mobile communication terminal that enables lower manufacturing cost and power consumption, and includes an OLED panel driving circuit unit for jointly driving the main OLED panel and the sub OLED panel, and controls data signals and OLED panels. A signal is commonly applied to each of the OLED panels, the OLED panel driving circuit unit includes a DC / DC converter, and an output voltage (OLED driving voltage) by selectively adjusting the output resistance of the feedback resistance of the DC / DC converter. It can be achieved by including a feedback resistance ratio control unit for controlling the.

Description

이동 통신 단말기의 이중 디스플레이 패널 제어 장치{DUAL DISPLAY PANEL CONTROL APPARATUS FOR MOBILE COMMUNICATION DEVICE}DUAL DISPLAY PANEL CONTROL APPARATUS FOR MOBILE COMMUNICATION DEVICE}

도 1은 종래 2개의 OLED 패널을 메인/서브 디스플레이로 사용하는 이동 통신 단말기의 구동 회로를 보인 블록도.1 is a block diagram showing a driving circuit of a mobile communication terminal using two conventional OLED panels as a main / sub display.

도 2는 본 발명에 따라 2개의 OLED 패널을 메인/서브 디스플레이로 사용하는 이동 통신 단말기의 공동 구동 회로를 보인 블록도.2 is a block diagram showing a joint drive circuit of a mobile communication terminal using two OLED panels as a main / sub display according to the present invention;

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

101 : 메인 OLED 패널 103 : 서브 OLED 패널101: main OLED panel 103: sub OLED panel

201 : OLED 패널 구동 회로부 201a : DC/DC 컨버터201: OLED panel driving circuit section 201a: DC / DC converter

201b : 궤환 저항비 제어부201b: feedback resistance ratio control unit

본 발명은 이동 통신 단말기의 이중 디스플레이 패널 제어 장치에 관한 것으로, 특히 이중 유기 E/L(Dual OLED : Organic Electro Luminescent Display) 패널을 사용하는 이동 통신 단말기에 있어서, 각 유기 E/L 패널을 제어하기 위한 구동 회로를 공동으로 사용할 수 있도록 구성하여, 단말기의 제작 단가 및 전력 소모를 낮출 수 있도록 하는 이동 통신 단말기의 이중 디스플레이 패널 제어 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual display panel control device of a mobile communication terminal. In particular, in a mobile communication terminal using a dual organic electroluminescent display (E / L) panel, each organic E / L panel is controlled. The present invention relates to a dual display panel control apparatus of a mobile communication terminal configured to be jointly used for driving circuits, thereby lowering manufacturing cost and power consumption of the terminal.

일반적으로, 유기 E/L 디스플레이(OLED) 패널은 주로 DC/DC 컨버터를 사용하여 구동전원을 공급하는데, 패널 사이즈나 타겟 휘도에 따라 구동전압이 다르므로, OLED 패널 수만큼의 구동전원용 DC/DC 컨버터를 구비하여 구동 회로를 구성한다.In general, an organic E / L display (OLED) panel mainly supplies a driving power using a DC / DC converter, and the driving voltage varies depending on the panel size and the target luminance. A converter is provided to form a driving circuit.

즉, 이중 디스플레이를 갖는 폴더형 이동 통신 단말기용으로 2개의 OLED 패널을 메인/서브 디스플레이로 사용할 경우, 2개의 구동 회로가 필요하며 각 구동 회로마다 각기 DC/DC 컨버터를 필요로 한다.That is, when two OLED panels are used as a main / sub display for a clamshell mobile communication terminal having dual displays, two driving circuits are required, and each driving circuit requires a DC / DC converter.

그러나, 이동 통신 단말기와 같이 한정된 크기의 인쇄 회로 기판(PCB, FPCB) 상에 2개의 DC/DC 컨버터를 실장하기 위해서는 공간적 제약 및 제작 단가를 상승시키는 문제점이 있다.However, in order to mount two DC / DC converters on a printed circuit board (PCB, FPCB) of limited size, such as a mobile communication terminal, there is a problem of increasing space constraints and manufacturing cost.

도1은 종래 2개의 OLED 패널을 메인/서브 디스플레이로 사용하는 이동 통신 단말기의 구동 회로를 보인 블록도로서, 각 구동 회로의 구성은 동일하지만 패널 사이즈나 타겟 휘도에 따라 각기 다른 구동전압을 출력하도록 구성되어 있다.FIG. 1 is a block diagram showing a driving circuit of a mobile communication terminal using two OLED panels as a main / sub display, wherein the driving circuits are identical in configuration but output different driving voltages according to panel size or target luminance. Consists of.

즉, 메인 OLED 패널(101)을 구동하기 위한 메인 구동 회로부(102)와, 서브 OLED 패널(103)을 구동하기 위한 서브 구동 회로부(104)를 각기 구비하고, 데이터 신호(Data Signal) 및 OLED 패널 제어신호(Control Signal)를 각 OLED 패널(101, 103)에 공통으로 인가하도록 구성하고, 상기 각 구동 회로부(102, 104)마다 각기 DC/DC 컨버터(102a, 104a)를 포함한다.That is, the main driving circuit unit 102 for driving the main OLED panel 101 and the sub driving circuit unit 104 for driving the sub OLED panel 103 are respectively provided, and a data signal and an OLED panel are provided. The control signal is applied to each OLED panel 101 and 103 in common, and each of the driving circuit units 102 and 104 includes DC / DC converters 102a and 104a, respectively.

이에 따라, 상기와 같이 구성된 구동 회로에 의해서 OLED 패널을 제어하기 위해서는, 구동 회로부(102, 104)를 통해 각 OLED 패널에 구동전원이 공급되는 상태에서, 구동하고자 하는 해당 OLED 패널에 OLED 패널 제어신호와 데이터 신호를 인가한다.Accordingly, in order to control the OLED panel by the driving circuit configured as described above, in a state in which driving power is supplied to each OLED panel through the driving circuit units 102 and 104, the OLED panel control signal to the corresponding OLED panel to be driven. Apply the data signal with.

즉, 각 OLED 패널 구동 회로부는 OLED 패널의 구동 여부에 관계없이 구동전원을 각 OLED 패널에 인가하기 때문에 전력 소모가 많고, 2개의 DC/DC 컨버터를 실장해야 하기 때문에 공간적 제약이 있고 제작 단가를 상승시키는 문제점이 있다.That is, each OLED panel driving circuit part consumes a lot of power because it applies driving power to each OLED panel regardless of whether the OLED panel is driven or not, and there are space limitations and mounting cost due to mounting two DC / DC converters. There is a problem.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위하여 창출한 것으로, 이중 OLED(Organic Electro Luminescent Display) 패널을 사용하는 이동 통신 단말기에 있어서, 각 OLED 패널을 제어하기 위한 구동 회로를 공동으로 사용할 수 있도록 구성하여, 단말기의 제작 단가 및 전력 소모를 낮출 수 있도록 하는 이동 통신 단말기의 이중 디스플레이 패널 제어 장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and in a mobile communication terminal using a dual OLED (Organic Electro Luminescent Display) panel, a driving circuit for controlling each OLED panel is commonly used. It is an object of the present invention to provide a dual display panel control apparatus for a mobile communication terminal configured to be able to reduce the manufacturing cost and power consumption of the terminal.

이와 같은 목적을 달성하기 위한 본 발명은, 메인 OLED 패널 및 서브 OLED 패널을 공동으로 구동하기 위한 OLED 패널 구동 회로부를 구비하고, 데이터 신호 및 OLED 패널 제어신호를 상기 각 OLED 패널에 공통으로 인가하도록 구성하고, 상기 OLED 패널 구동 회로부에 DC/DC 컨버터를 포함하며, 상기 DC/DC 컨버터의 출력측 궤환 저항비를 선택적으로 조절하여 출력전압(OLED 구동전압)을 제어하기 위한 궤환 저항비 제어부를 포함하여 구성한 것을 특징으로 한다.The present invention for achieving the above object is provided with an OLED panel drive circuit for driving the main OLED panel and the sub-OLED panel jointly, and configured to apply a data signal and the OLED panel control signal to each of the OLED panel in common And a DC / DC converter in the OLED panel driving circuit unit, and including a feedback resistance ratio controller for selectively controlling the output feedback resistance ratio of the DC / DC converter to control the output voltage (OLED driving voltage). It is characterized by.

본 발명은 한 개의 DC/DC 컨버터를 사용하여 2개의 OLED 패널에 구동전원을 공급하기 위한 회로를 제공하기 위한 것으로, 즉, 이중(Dual) OLED 패널을 사용하는 이동 통신 단말기에 있어서, 하나의 OLED 구동 회로부를 구비하고 그 구동 회로부를 각 OLED 패널에서 공동으로 사용함으로써, 인쇄 회로 기판의 부품 실장 공간을 줄이고 단말기의 제작 단가와 전력 소모를 낮출 수 있도록 하는 장치의 제공을 요지로 한다.The present invention is to provide a circuit for supplying driving power to two OLED panels using one DC / DC converter, that is, in a mobile communication terminal using a dual OLED panel, one OLED By providing a driving circuit portion and jointly using the driving circuit portion in each OLED panel, there is a need to provide an apparatus for reducing component mounting space of a printed circuit board and lowering manufacturing cost and power consumption of a terminal.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

도2는 본 발명에 따라 2개의 OLED 패널을 메인/서브 디스플레이로 사용하는 이동 통신 단말기의 공동 구동 회로를 보인 블록도로서, 하나의 OLED 패널 구동 회로를 구비하고 각기 다른 구동전압을 선택적으로 출력하여 해당 OLED 패널에 구동전압을 인가하도록 구성한다.FIG. 2 is a block diagram showing a joint driving circuit of a mobile communication terminal using two OLED panels as a main / sub display according to the present invention, which includes one OLED panel driving circuit and selectively outputs different driving voltages. The driving voltage is applied to the OLED panel.

즉, 메인 OLED 패널(101) 및 서브 OLED 패널(103)을 공동으로 구동하기 위한 OLED 패널 구동 회로부(201)를 구비하고, 데이터 신호(Data Signal) 및 OLED 패널 제어신호(Control Signal)를 각 OLED 패널(101, 103)에 공통으로 인가하도록 구성하고, 상기 OLED 패널 구동 회로부(201)에 DC/DC 컨버터(201a)를 포함하며, 상기 DC/DC 컨버터(201a)의 궤환 저항비를 선택적으로 조절하여 출력전압(OLED 구동전압)을 제어하기 위한 궤환 저항비 제어부(201b)를 포함하여 구성한다.That is, the OLED panel driving circuit unit 201 for jointly driving the main OLED panel 101 and the sub OLED panel 103 is provided, and a data signal and an OLED panel control signal are provided for each OLED. It is configured to apply to the panels 101 and 103 in common, and includes a DC / DC converter 201a in the OLED panel driving circuit unit 201, and selectively adjusts the feedback resistance ratio of the DC / DC converter 201a. And a feedback resistance ratio control unit 201b for controlling the output voltage (OLED drive voltage).

일반적으로 DC/DC 컨버터의 출력전압은 컨버터의 출력단에 연결된 2개의 궤환 저항(R1, R2)에 의한 저항비로 계산된다. In general, the output voltage of the DC / DC converter is calculated as a resistance ratio by two feedback resistors R1 and R2 connected to the output terminal of the converter.

따라서, 본 발명에서는 컨버터(201a)의 출력측에 연결된 저항(R1)과, 접지측에 연결된 저항(R2)의 저항비를 조절함으로써 출력 전압을 조절할 수 있는데, 여기 에 상기 접지측에 연결된 저항(R2)에 병렬로 저항(R3)을 더 연결하고, 그 저항(R3)에 스위칭 트랜지스터(Q1)를 직렬 연결하여 제2 온/오프 제어신호(ON/OFF2)에 의해 그 트랜지스터(Q1)를 온/오프 제어하도록 한다.Accordingly, in the present invention, the output voltage can be adjusted by adjusting the resistance ratio of the resistor R1 connected to the output side of the converter 201a and the resistor R2 connected to the ground side, and the resistor R2 connected to the ground side. ) Further connects a resistor R3 in parallel, and connects the switching transistor Q1 in series with the resistor R3 to turn the transistor Q1 on / off by a second on / off control signal ON / OFF2. Off control.

즉, 상기 트랜지스터(Q1)를 온 시키면 두 저항(R2, R3)의 병렬값으로 컨버터의 출력전압이 제어되고, 오프 시키면 R2의 저항값으로 컨버터의 출력전압이 제어됨으로써 서로 다른 2개의 구동전압을 출력할 수 있도록 한다.That is, when the transistor Q1 is turned on, the output voltage of the converter is controlled by the parallel values of the two resistors R2 and R3, and when the transistor Q1 is turned off, the output voltage of the converter is controlled by the resistance value of the R2 so that two different driving voltages are controlled. Enable output.

상기와 같이 구성된 구동 회로에 의해서 OLED 패널을 제어하기 위해서는, 구동 회로부(201)를 통해 제어하고자 하는 해당 OLED 패널에 맞는 구동전원이 각 OLED 패널에 공급되고 있는 상태에서, 구동하고자 하는 해당 OLED 패널에 OLED 패널 제어신호와 데이터 신호를 인가한다. 즉, 세가지 신호(OLED 패널 제어신호, 데이터 신호, 구동전압)를 제어하고자 하는 OLED 패널에 맞게 구동하는 것이다.In order to control the OLED panel by the driving circuit configured as described above, in a state in which driving power corresponding to the corresponding OLED panel to be controlled through the driving circuit unit 201 is supplied to each OLED panel, to the corresponding OLED panel to be driven. Apply OLED panel control signal and data signal. That is, three signals (OLED panel control signal, data signal, driving voltage) are driven according to the OLED panel to be controlled.

이상에서 설명한 바와 같이 본 발명 이동 통신 단말기의 이중 디스플레이 패널 제어 장치는, 이중 OLED(Organic Electro Luminescent Display) 패널을 사용하는 이동 통신 단말기에 있어서, 각 OLED 패널을 제어하기 위한 구동 회로를 공동으로 사용할 수 있도록 구성하여, 단말기의 제작 단가 및 전력 소모를 낮출 수 있도록 하는 효과가 있다.As described above, the dual display panel control apparatus of the mobile communication terminal of the present invention, in a mobile communication terminal using a dual OLED (Organic Electro Luminescent Display) panel, it is possible to jointly use a driving circuit for controlling each OLED panel. It is configured so that the manufacturing cost and power consumption of the terminal can be lowered.

Claims (4)

메인 OLED 패널 및 서브 OLED 패널을 공동으로 구동하기 위한 OLED 패널 구동 회로부를 구비하고, An OLED panel driving circuit portion for jointly driving the main OLED panel and the sub OLED panel, 데이터 신호 및 OLED 패널 제어신호를 상기 각 OLED 패널에 공통으로 인가하도록 구성하고, Configured to apply a data signal and an OLED panel control signal to each of the OLED panels in common; 상기 OLED 패널 구동 회로부에 DC/DC 컨버터를 포함하며, The OLED panel driving circuit unit includes a DC / DC converter, 상기 DC/DC 컨버터의 출력측 궤환 저항비를 선택적으로 조절하여 출력전압(OLED 구동전압)을 제어하기 위한 궤환 저항비 제어부를 포함하여 구성한 것을 특징으로 하는 이동 통신 단말기의 이중 디스플레이 패널 제어 장치.And a feedback resistance ratio controller for selectively controlling the output resistance feedback resistance ratio of the DC / DC converter to control the output voltage (OLED driving voltage). 제1항에 있어서, 상기 궤환 저항비 제어부는 DC/DC 컨버터의 출력측에 저항비 조절을 위해 접지측에 연결된 저항(R2)에 병렬로 저항(R3)을 더 연결하고, 그 저항(R3)에 스위칭 트랜지스터를 직렬 연결하여 온/오프 제어신호(ON/OFF2)에 의해 그 트랜지스터를 온/오프 제어하도록 구성한 것을 특징으로 하는 이동 통신 단말기의 이중 디스플레이 패널 제어 장치.The resistor of claim 1, wherein the feedback resistance ratio controller further connects a resistor R3 in parallel to a resistor R2 connected to a ground side at the output side of the DC / DC converter to adjust a resistance ratio. And a switching transistor connected in series so as to control the transistor on / off by an on / off control signal (ON / OFF2). 제2항에 있어서, 상기 트랜지스터를 온 시키면 두 저항(R2, R3)의 병렬값으로 컨버터의 출력전압이 제어되고, 오프 시키면 저항(R2)의 저항값으로 컨버터의 출력전압이 제어되도록 하여 서로 다른 구동전압을 출력하도록 구성한 것을 특징으 로 하는 이동 통신 단말기의 이중 디스플레이 패널 제어 장치.3. The method of claim 2, wherein when the transistor is turned on, the output voltage of the converter is controlled by the parallel value of the two resistors R2 and R3, and when the transistor is turned off, the output voltage of the converter is controlled by the resistance value of the resistor R2. A dual display panel control device for a mobile communication terminal, characterized in that configured to output a driving voltage. 제1항에 있어서, 상기 구동 회로부는 제어하고자 하는 해당 OLED 패널에 맞는 구동전원을 출력하여 각 OLED 패널에 공통으로 인가한 상태에서, 구동하고자 하는 해당 OLED 패널에 OLED 패널 제어신호와 데이터 신호를 인가하도록 구성한 것을 특징으로 하는 이동 통신 단말기의 이중 디스플레이 패널 제어 장치.The method of claim 1, wherein the driving circuit unit outputs a driving power corresponding to the corresponding OLED panel to be controlled and applies them to each OLED panel in common, and applies the OLED panel control signal and data signal to the corresponding OLED panel to be driven. And a dual display panel control device for a mobile communication terminal.
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KR20030022049A (en) * 2001-09-06 2003-03-15 샤프 가부시키가이샤 Display, Method of Manufacturing the Same, and Method of Driving the Same
KR20030039309A (en) * 2001-11-09 2003-05-17 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Semiconductor element, electric circuit, display device, light-emitting device and electronic device
KR20030047800A (en) * 2001-12-07 2003-06-18 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Display device and electric equipment using the same

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KR20020063524A (en) * 2001-01-29 2002-08-03 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Light emitting device
KR20030022049A (en) * 2001-09-06 2003-03-15 샤프 가부시키가이샤 Display, Method of Manufacturing the Same, and Method of Driving the Same
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