WO2014117361A1 - 有机发光显示器及其半衰期寿命的延长方法、驱动电路 - Google Patents
有机发光显示器及其半衰期寿命的延长方法、驱动电路 Download PDFInfo
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- WO2014117361A1 WO2014117361A1 PCT/CN2013/071195 CN2013071195W WO2014117361A1 WO 2014117361 A1 WO2014117361 A1 WO 2014117361A1 CN 2013071195 W CN2013071195 W CN 2013071195W WO 2014117361 A1 WO2014117361 A1 WO 2014117361A1
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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]
Definitions
- the present invention relates to the field of organic light emitting display, and more particularly to an organic light emitting display and a method and a driving circuit for extending the half life of the organic light emitting device.
- OLED displays are a display technology that has developed rapidly in recent years. Compared with traditional LCD, OLED display has the advantages of self-illumination, wide viewing angle, fast response time, high luminous efficiency, low operating voltage, thin panel thickness, wide operating temperature range, flexible manufacturing and low production cost. For the next generation of mainstream display technology, the downside is that OLEDs have a short life span.
- the brightness of an OLED display will gradually decay with a long period of use.
- the lifetime of the T50 that is, the half-life life, refers to the time required for the brightness of the OLED display to decay to half the original brightness. The longer the time, the better.
- the attenuation of the brightness is due to the decrease in the current supplied to the OLED display panel, so if the current supplied to the OLED display panel drops below a predetermined current at which the luminescence brightness of the OLED display panel is normal, the current supplied to the OLED display panel is increased to The predetermined current is capable of extending the half-life life time.
- An object of the present invention is to provide an organic light emitting display, comprising: an organic light emitting display panel for displaying a picture; a boot detection unit for detecting a power on signal when the organic light emitting display is turned on; and a test screen generating unit generating The test picture signal is detected, the detection start signal control selection unit selects the test picture signal to pass, the timing control unit drives the organic light emitting display panel to display the test picture according to the test picture signal; the current increasing unit, when the test picture is displayed, the current increasing unit detects When the real-time current supplied to the organic light-emitting display panel by the power supply circuit is lower than the predetermined current, the real-time current is increased to a predetermined current and the real-time current added to the predetermined current is registered; the normal picture signal input terminal inputs the normal picture signal, and the normal picture signal control selection unit When the normal picture signal is selected to pass, the organic light emitting display panel receives the registered real-time current added to the predetermined current provided by the current
- the current increasing unit includes a current detecting unit and a half-life control unit.
- the half-life control unit When the current detecting unit detects that the real-time current supplied by the power circuit to the organic light emitting display panel is lower than a predetermined current, the half-life control unit generates a control signal to change the power source. The voltage of the circuit increases the real-time current to a predetermined current and registers a real-time current that is added to the predetermined current.
- the organic light emitting display further includes a timing unit that generates a time signal when timing to a predetermined time, and when the organic light emitting display panel displays a normal picture, the time signal control selection unit selects the test picture signal to pass.
- the organic light emitting display further includes an external control signal input terminal for inputting an external control signal, and when the organic light emitting display panel displays a normal screen, the external control signal control selection unit selects the test picture signal to pass.
- Another object of the present invention is to provide a method for extending the half life of an organic light emitting display, comprising the steps of: a) detecting that the organic light emitting display is turned on when detecting the power on signal; b) generating a test picture signal; c) Detecting the power-on signal control selection unit to select the test picture signal to pass; d) driving the organic light-emitting display panel to display the test screen according to the test picture signal; e) detecting the real-time current supplied from the power supply circuit to the organic light-emitting display panel and detecting the detected The real-time current is compared with the predetermined current; f) when the real-time current is lower than the predetermined current, the real-time current is increased to the predetermined current and the real-time current added to the predetermined
- the organic light emitting display includes a timing unit that generates a time signal when timing to a predetermined time; in the above step g), when the organic light emitting display panel displays a normal picture, the time signal control selection unit selects the test picture signal to pass, Then return to step d).
- the organic light emitting display includes an external control signal input terminal for inputting an external control signal; in the above step g), when the organic light emitting display panel displays a normal screen, the external control signal controls the selection unit to select a test screen signal. Pass and then return to step d).
- Another object of the present invention is to provide a driving circuit for an organic light emitting display, comprising: a boot detection unit that detects a startup signal when the organic light emitting display is turned on; a test screen generating unit that generates a test screen signal, and detects The power-on signal control selection unit selects the test picture signal to pass, and the timing control unit drives the organic light-emitting display panel to display the test picture according to the test picture signal; Adding a unit, when the test screen is displayed, when the current increasing unit detects that the real-time current supplied from the power supply circuit to the organic light-emitting display panel is lower than the predetermined current, increasing the real-time current to the predetermined current and registering the real-time current added to the predetermined current; The picture signal input end inputs a normal picture signal, and the normal picture signal control selection unit selects a normal picture signal to pass, and the organic light emitting display panel receives the registered real-time current added to the predetermined current provided by the current increasing unit and accepts the timing control unit according to
- the current increasing unit includes a current detecting unit and a half-life control unit.
- the half-life control unit When the current detecting unit detects that the real-time current supplied by the power circuit to the organic light emitting display panel is lower than a predetermined current, the half-life control unit generates a control signal to change the power source.
- the voltage of the circuit increases the real-time current to a predetermined current and registers a real-time current that is added to the predetermined current.
- the driving circuit further includes a timing unit that generates a time signal when timing to a predetermined time; and when the organic light emitting display panel displays a normal picture, the time signal control selection unit selects the test picture signal to pass.
- the driving circuit further includes an external control signal input end for inputting an external control signal; when the organic light emitting display panel displays a normal picture, the external control signal control selecting unit selects the test picture signal to pass.
- the organic light emitting display of the present invention and the method and driving circuit for extending the half life of the organic light emitting display by changing the voltage generated by the power supply circuit of the organic light emitting display to increase the real-time current supplied to the organic light emitting display panel to a predetermined current, the organic The time of the half life of the illuminated display, that is, the life of the organic light emitting display is extended.
- FIG. 1 is a schematic view of an organic light emitting display according to an embodiment of the present invention.
- 1 is a schematic view of an organic light emitting display according to an embodiment of the present invention.
- the organic light emitting display 1 includes: a boot detection unit 10 and a test screen generating unit.
- the selection unit 60 in this embodiment is capable of receiving different control signals to allow different picture signals to pass, and the timing control unit 30 drives the organic light-emitting display panel 70 to display different pictures according to different screen signals passed, The specific role will be reflected in the following.
- the boot detection unit 10 detects that the OLED display 1 is turned on when the OLED display is turned on, and the test screen generating unit 20 generates a test screen signal.
- the detection start signal control selection unit 60 selects the test screen signal to pass, and the test screen The signal is transmitted to the timing control unit 30, and the timing control unit 30 drives the organic light-emitting display panel 70 to display a test screen according to the test picture signal.
- the current detecting unit 41 detects the real-time current supplied from the power circuit 50 to the organic light-emitting display panel 70, and compares the real-time current with a predetermined current.
- the half-life control unit 42 When the real-time current is lower than the predetermined current, the half-life control unit 42 generates The control signal changes the voltage generated by the power supply circuit 50 to increase the real-time current to a predetermined current, and the real-time current added to the predetermined current is registered in the half-life control unit 42.
- the test picture disappears, the normal picture signal input terminal 100 inputs a normal picture signal, the normal picture signal control selection unit 60 selects the normal picture signal to pass, the normal picture signal is transmitted to the timing control unit 30, and the timing control unit 30 drives the organic according to the normal picture signal.
- the half-life control unit 42 supplies the registered real-time current added to the predetermined current to the organic light-emitting display panel 70, so that the organic light-emitting display panel 70 displays a normal picture.
- the test screen appears for a very short time, that is, the time interval from the test screen to the normal screen is extremely short, so the appearance of the test screen is not perceived by the user.
- the predetermined current in the present embodiment is a current when the display luminance of the organic light-emitting display panel 70 is normal.
- the organic light-emitting display 1 may further include a timing unit 80, which functions to display a decrease in brightness when the organic light-emitting display 1 displays a normal picture for a long time, that is, to re-correct the real-time current when the real-time current is lower than the predetermined current.
- the function of the timing unit 80 will be described in detail below.
- the timing unit 80 When the organic light emitting display 1 displays the normal picture for a long time, the timing unit 80 generates a time signal when it is timed to a predetermined time, the time signal interrupts the control of the normal picture signal to the selection unit 60, and then the time signal control selection unit 60 selects the test picture signal. Pass the test screen signal to The timing control unit 30, the timing control unit 30 drives the organic light-emitting display panel 70 to display a test screen according to the test screen signal.
- the half-life control unit 42 When the current detecting unit 41 detects that the real-time current supplied from the power supply circuit 50 to the organic light-emitting display panel 70 is lower than the predetermined current, the half-life control unit 42 generates a control signal to change the voltage generated by the power supply circuit 50 to increase The real-time current is increased to a predetermined current, and the real-time current added to the predetermined current is registered in the half-life control unit 42. Thereafter, the test picture disappears, the normal picture signal input terminal 100 inputs a normal picture signal, the normal picture signal re-control selection unit 60 selects the normal picture signal to pass, and the timing control unit 30 drives the organic light-emitting display panel 70 according to the normal picture signal while the half-life control is performed.
- the unit 42 supplies the registered real-time current added to the predetermined current to the organic light-emitting display panel 70, so that the organic light-emitting display panel 70 displays a normal picture.
- the organic light emitting display 1 may further include an external control signal input terminal 90, which functions to correct the real-time current.
- the external control signal input terminal 90 inputs an external control signal, and the external control signal is interrupted.
- the normal picture signal controls the selection unit 60, and then the external control signal control selection unit 60 selects the test picture signal to pass, the test picture signal is transmitted to the timing control unit 30, and the timing control unit 30 drives the organic light-emitting display panel 70 to display the test according to the test picture signal.
- Picture During the test picture display, when the current detecting unit 41 detects that the real-time current supplied from the power supply circuit 50 to the organic light-emitting display panel 70 is lower than the predetermined current, the half-life control unit 42 generates a control signal to change the voltage generated by the power supply circuit 50 to increase The real-time current is increased to a predetermined current, and the real-time current added to the predetermined current is registered in the half-life control unit 42.
- the normal picture signal input terminal 100 inputs a normal picture signal
- the normal picture signal re-control selection unit 60 selects the normal picture signal to pass
- the timing control unit 30 drives the organic light-emitting display panel 70 according to the normal picture signal while the half-life control is performed.
- the unit 42 supplies the registered real-time current added to the predetermined current to the organic light-emitting display panel 70, so that the organic light-emitting display panel 70 displays a normal picture.
- a method for extending the half life of an organic light emitting display comprising:
- S1 detecting that the organic light emitting display is turned on when detecting the power on signal
- S2 generating a test picture signal
- S3 detecting that the power-on signal control selection unit selects the test picture signal to pass;
- S4 driving the organic light emitting display panel to display a test screen according to the test screen signal;
- the normal picture signal control selection unit selects the normal picture signal to pass, drives the organic light emitting display panel according to the normal picture signal, and simultaneously supplies the registered real-time current added to the predetermined current to the organic light emitting display panel, so that the organic light emitting display panel displays the normal picture. . Further, in step S7, when the organic light-emitting display panel displays a normal picture, the selection unit selects the test picture signal to pass through the time signal generated when the timing unit of the organic light-emitting display counts to a predetermined time, and then returns to step S4.
- step S7 when the organic light emitting display panel displays a normal picture, the selection control unit selects the test picture signal to pass through the external control signal input from the external signal input terminal of the organic light emitting display, and then returns to step S4.
- the boot detection unit 10 the test screen generating unit 20, the timing control unit 30, the current increasing unit 40, the power supply circuit 50, the selecting unit 60, the normal picture signal input terminal 100, the timing unit 80, and the external control signal input terminal 90 are formed.
- the driving circuit of the organic light-emitting display 1 is used to drive the display screen of the organic light-emitting display panel 70. The function of each unit has been described in detail above, and details are not described herein again.
- the time of the half life of the organic light emitting display can be prolonged, that is, the organic light emission is extended.
- the life of the display by changing the voltage generated by the power supply circuit of the organic light emitting display to increase the real-time current supplied to the organic light emitting display panel to a predetermined current, the time of the half life of the organic light emitting display can be prolonged, that is, the organic light emission is extended. The life of the display.
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Abstract
一种有机发光显示器（1）及其半衰期寿命的延长方法，有机发光显示器（1）包括：有机发光显示面板（70），显示画面；开机侦测单元（10），侦测有机发光显示器（1）开机时发出侦测开机信号；测试画面产生单元（20），产生测试画面信号，侦测开机信号控制选择单元（60）选择测试画面信号通过；时序控制单元（30），根据测试画面信号驱动有机发光显示面板（70）；电流增加单元（40），当测试画面显示时，其侦测到由电源电路（50）提供给有机发光显示面板（70）的实时电流低于预定电流时，增加实时电流至预定电流并寄存增加后的实时电流；正常画面信号输入端（100），其输入的正常画面信号控制选择单元（60）选择正常画面信号通过，有机发光显示面板（70）接收增加后的实时电流并接受时序控制单元（30）根据正常画面信号的驱动而显示正常画面。
Description
有机发光显示器及其半衰期寿命的延长方法、 驱动电路 技术领域
本发明涉及有机发光显示领域， 具体地说， 是涉及一种有机发光显示器及 其半衰期寿命的延长方法、 驱动电路。
背景技术
有机发光显示器即 OLED显示器是近年来发展迅猛的一种显示技术。与传 统的 LCD相比， OLED显示器具有自发光、 视角广、 响应时间快、 发光效率 高、 操作电压低、 面板厚度薄、 工作温度范围广、 可柔性制作及生产成本低等 优势， 因此被视为下一代的主流显示技术， 不足之处是 OLED的寿命较短。
OLED显示器的亮度会随着使用时间长而逐渐衰减， T50寿命即半衰期寿 命指得是 OLED显示器的亮度衰减至原始亮度一半时所需要的时间，该时间越 长越好。亮度的衰减是由于提供给 OLED显示面板的电流下降所致， 因此如果 能够在提供给 OLED显示面板的电流下降低于 OLED显示面板发光亮度正常 的预定电流时，增加提供给 OLED显示面板的电流至预定电流即能够延长半衰 期寿命时间。
发明内容 本发明的目的在于提供一种有机发光显示器， 包括： 有机发光显示面板， 用于显示画面；开机侦测单元，侦测有机发光显示器开机时发出侦测开机信号； 测试画面产生单元， 产生测试画面信号， 侦测开机信号控制选择单元选择测试 画面信号通过， 时序控制单元根据测试画面信号驱动有机发光显示面板显示测 试画面； 电流增加单元， 当测试画面显示时， 电流增加单元侦测到由电源电路 提供给有机发光显示面板的实时电流低于预定电流时， 增加实时电流至预定电 流并寄存增加至预定电流的实时电流； 正常画面信号输入端， 输入正常画面信 号， 正常画面信号控制选择单元选择正常画面信号通过， 有机发光显示面板接 收电流增加单元提供的寄存的增加至预定电流的实时电流并接受时序控制单 元根据正常画面信号的驱动而显示正常画面。
此外， 所述电流增加单元包括电流侦测单元和半衰期控制单元， 电流侦测 单元侦测到电源电路提供给有机发光显示面板的实时电流低于预定电流时， 半 衰期控制单元产生控制信号来改变电源电路的电压以增加实时电流至预定电 流并寄存增加至预定电流的实时电流。 此外， 所述有机发光显示器还包括计时单元， 计时至预定时间时产生时间 信号， 当有机发光显示面板显示正常画面时， 时间信号控制选择单元选择所述 测试画面信号通过。 此外， 所述有机发光显示器还包括外部控制信号输入端， 用于输入外部控 制信号， 当有机发光显示面板显示正常画面时， 外部控制信号控制选择单元选 择所述测试画面信号通过。 本发明的另一目的还在于提供一种有机发光显示器的半衰期寿命的延长 方法， 包括歩骤： a ) 侦测到有机发光显示器开机时发出侦测开机信号； b ) 产 生测试画面信号； c ) 侦测开机信号控制选择单元选择测试画面信号通过； d ) 根据测试画面信号驱动有机发光显示面板显示测试画面； e ) 侦测由电源电路 提供给有机发光显示面板的实时电流并将侦测到的实时电流与预定电流比较； f) 当实时电流低于预定电流时， 增加实时电流至预定电流并寄存增加至预定 电流的实时电流； g ) 正常画面信号控制选择单元选择正常画面信号通过， 根 据正常画面信号驱动有机发光显示面板， 同时将寄存的增加至预定电流的实时 电流提供给有机发光显示面板， 使得有机发光显示面板显示正常画面。 此外， 所述有机发光显示器包括计时单元， 计时至预定时间时产生时间信 号； 在上述的歩骤 g ) 中， 当有机发光显示面板显示正常画面时， 时间信号控 制选择单元选择测试画面信号通过， 而后返回歩骤 d)。 此外， 所述有机发光显示器包括外部控制信号输入端， 用于输入外部控制 信号； 在上述的歩骤 g ) 中， 当有机发光显示面板显示正常画面时， 外部控制 信号控制选择单元选择测试画面信号通过， 而后返回歩骤 d)。 本发明的另一目的还在于提供一种有机发光显示器的驱动电路， 包括： 开 机侦测单元， 侦测有机发光显示器开机时发出侦测开机信号； 测试画面产生单 元， 产生测试画面信号， 侦测开机信号控制选择单元选择测试画面信号通过， 时序控制单元根据测试画面信号驱动有机发光显示面板显示测试画面； 电流增
加单元， 当测试画面显示时， 电流增加单元侦测到由电源电路提供给有机发光 显示面板的实时电流低于预定电流时， 增加实时电流至预定电流并寄存增加至 预定电流的实时电流； 正常画面信号输入端， 输入正常画面信号， 正常画面信 号控制选择单元选择正常画面信号通过， 有机发光显示面板接收电流增加单元 提供的寄存的增加至预定电流的实时电流并接受时序控制单元根据正常画面 信号的驱动而显示正常画面。 此外， 所述电流增加单元包括电流侦测单元和半衰期控制单元， 电流侦测 单元侦测到电源电路提供给有机发光显示面板的实时电流低于预定电流时， 半 衰期控制单元产生控制信号来改变电源电路的电压以增加实时电流至预定电 流并寄存增加至预定电流的实时电流。 此外， 所述驱动电路还包括计时单元， 计时至预定时间时产生时间信号； 当有机发光显示面板显示正常画面时， 时间信号控制选择单元选择所述测试画 面信号通过。 此外，所述驱动电路还包括外部控制信号输入端，用于输入外部控制信号; 当有机发光显示面板显示正常画面时， 外部控制信号控制选择单元选择所述测 试画面信号通过。 根据本发明的有机发光显示器及其半衰期寿命的延长方法、 驱动电路， 通 过改变有机发光显示器的电源电路产生的电压， 以增加提供给有机发光显示面 板的实时电流至预定电流， 则可延长该有机发光显示器的半衰期寿命的时间， 也就是延长了该有机发光显示器的寿命。 附图说明 图 1是本发明实施例的有机发光显示器的示意图。
图 2是本发明实施例的有机发光显示器半衰期寿命的延长方法的流程图。 具体实施方式 为了更好地阐述本发明所采取的技术手段及其效果， 以下结合本发明的实 施例及其附图进行详细描述， 其中， 相同的标号始终表示相同的部件。 图 1是本发明实施例的有机发光显示器的示意图。 参阅图 1， ，有机发光显示器 1包括： 开机侦测单元 10、测试画面产生单元
20、 时序控制单元 30、 电流增加单元 40、 电源电路 50、 选择单元 60、 正常画 面信号输入端 100及有机发光显示面板 70， 其中， 电流增加单元 40可包括电 流侦测单元 41和半衰期控制单元 42。本实施例中的选择单元 60是可以接收不 同的控制信号的控制而允许不同的画面信号通过， 时序控制单元 30根据通过 的不同的画面信号来驱动有机发光显示面板 70显示不同的画面， 二者的具体 作用将于以下体现。 详细地说， 开机侦测单元 10侦测到有机发光显示器 1开机时发出侦测开 机信号， 测试画面产生单元 20产生测试画面信号， 侦测开机信号控制选择单 元 60选择测试画面信号通过， 测试画面信号传送至时序控制单元 30， 时序控 制单元 30根据测试画面信号驱动有机发光显示面板 70显示测试画面。在测试 画面显示期间， 电流侦测单元 41侦测电源电路 50向有机发光显示面板 70提 供的实时电流， 并将实时电流与预定电流比较， 当实时电流低于预定电流时， 半衰期控制单元 42产生控制信号来改变电源电路 50产生的电压以增加实时电 流至预定电流， 增加至预定电流的实时电流寄存于半衰期控制单元 42中。 此 后， 测试画面消失， 正常画面信号输入端 100输入正常画面信号， 正常画面信 号控制选择单元 60选择正常画面信号通过， 正常画面信号传送至时序控制单 元 30， 时序控制单元 30根据正常画面信号驱动有机发光显示面板 70的同时， 半衰期控制单元 42将寄存的增加至预定电流的实时电流提供给有机发光显示 面板 70， 使得有机发光显示面板 70显示正常画面。 此处需要说明的是， 测试 画面出现的时间极短， 即由测试画面切换到正常画面的时间间隔极短， 因此测 试画面的出现是不会被用户察觉的。 需要注意地是， 本实施例中的预定电流是使有机发光显示面板 70 的显示 亮度正常时的电流。 当侦测到的实时电流低于预定电流时， 有机发光显示面板 70的显示亮度将会下降。 此外， 在本实施例中， 有机发光显示器 1还可包括计时单元 80， 其作用是 在有机发光显示器 1长时间显示正常画面时显示亮度下降， 即实时电流低于预 定电流时重新校正实时电流。 以下将详细叙述计时单元 80的作用。 当有机发光显示器 1长时间显示正常画面时， 计时单元 80计时至预定时 间时产生时间信号， 该时间信号中断正常画面信号对选择单元 60 的控制， 而 后该时间信号控制选择单元 60选择测试画面信号通过， 测试画面信号传送至
时序控制单元 30， 时序控制单元 30根据测试画面信号驱动有机发光显示面板 70显示测试画面。 在测试画面显示期间， 电流侦测单元 41侦测到电源电路 50 向有机发光显示面板 70提供的实时电流低于预定电流时， 半衰期控制单元 42 产生控制信号来改变电源电路 50产生的电压以增加实时电流至预定电流， 增 加至预定电流的实时电流寄存于半衰期控制单元 42中。 此后， 测试画面消失， 正常画面信号输入端 100输入正常画面信号， 正常画面信号重新控制选择单元 60选择正常画面信号通过， 时序控制单元 30根据正常画面信号驱动有机发光 显示面板 70的同时， 半衰期控制单元 42将寄存的增加至预定电流的实时电流 提供给有机发光显示面板 70， 使得有机发光显示面板 70显示正常画面。 另外，在本实施例中，有机发光显示器 1还可包括外部控制信号输入端 90， 其作用也是校正实时电流。 在有机发光显示器 1显示正常画面时， 有机发光显 示面板 70的亮度下降， 即提供给有机发光显示面板 70的实时电流低于预定电 流， 外部控制信号输入端 90输入外部控制信号， 外部控制信号中断正常画面 信号对选择单元 60的控制， 而后外部控制信号控制选择单元 60选择测试画面 信号通过， 测试画面信号传送至时序控制单元 30， 时序控制单元 30根据测试 画面信号驱动有机发光显示面板 70显示测试画面。 在测试画面显示期间， 电 流侦测单元 41侦测到电源电路 50向有机发光显示面板 70提供的实时电流低 于预定电流时， 半衰期控制单元 42产生控制信号来改变电源电路 50产生的电 压以增加实时电流至预定电流， 增加至预定电流的实时电流寄存于半衰期控制 单元 42中。 此后， 测试画面消失， 正常画面信号输入端 100输入正常画面信 号， 正常画面信号重新控制选择单元 60选择正常画面信号通过， 时序控制单 元 30根据正常画面信号驱动有机发光显示面板 70的同时，半衰期控制单元 42 将寄存的增加至预定电流的实时电流提供给有机发光显示面板 70，使得有机发 光显示面板 70显示正常画面。 相对应地， 还提供了一种有机发光显示器的半衰期寿命的延长方法， 该方 法包括：
S1 : 侦测到有机发光显示器开机时发出侦测开机信号； S2: 产生测试画面信号；
S3： 侦测开机信号控制选择单元选择测试画面信号通过;
S4: 根据测试画面信号驱动有机发光显示面板显示测试画面；
S5 :侦测由电源电路提供给有机发光显示面板的实时电流并将侦测到的实 时电流与预定电流比较；
S6: 当实时电流低于预定电流时， 增加实时电流至预定电流并寄存增加至 预定电流的实时电流；
S7: 正常画面信号控制选择单元选择正常画面信号通过， 根据正常画面信 号驱动有机发光显示面板， 同时将寄存的增加至预定电流的实时电流提供给有 机发光显示面板， 使得有机发光显示面板显示正常画面。 此外， 在歩骤 S7中， 当有机发光显示面板显示正常画面时， 可通过有机 发光显示器的计时单元计时至预定时间时产生的时间信号控制选择单元选择 测试画面信号通过， 而后返回歩骤 S4。 同样地， 在歩骤 S7中， 当有机发光显示面板显示正常画面时， 还可通过 有机发光显示器的外部信号输入端输入的外部控制信号控制选择单元选择测 试画面信号通过， 而后返回歩骤 S4。 另外， 开机侦测单元 10、 测试画面产生单元 20、 时序控制单元 30、 电流 增加单元 40、 电源电路 50、 选择单元 60、 正常画面信号输入端 100、 计时单 元 80及外部控制信号输入端 90形成有机发光显示器 1的驱动电路， 该驱动电 路用于驱动有机发光显示面板 70显示画面， 各个单元的功能作用已于上被详 细描述， 在此不再赘述。 综上所述，通过改变有机发光显示器的电源电路产生的电压以增加提供给 有机发光显示面板的实时电流至预定电流， 则可延长该有机发光显示器的半衰 期寿命的时间， 也就是延长了有机发光显示器的寿命。
虽然本发明是参照其示例性的实施例被具体描述和显示的， 但是本领域的 普通技术人员应该理解， 在不脱离由权利要求限定的本发明的精神和范围的情 况下， 可以对其进行形式和细节的各种改变。
Claims
1、 一种有机发光显示器， 其中， 包括: 有机发光显示面板， 用于显示画面； 开机侦测单元， 侦测有机发光显示器开机时发出侦测开机信号； 测试画面产生单元， 产生测试画面信号， 侦测开机信号控制选择单元选择 测试画面信号通过， 时序控制单元根据测试画面信号驱动有机发光显示面板显 示测试画面； 电流增加单元， 当测试画面显示时， 电流增加单元侦测到由电源电路提供 给有机发光显示面板的实时电流低于预定电流时， 增加实时电流至预定电流并 寄存增加至预定电流的实时电流； 正常画面信号输入端， 输入正常画面信号， 正常画面信号控制选择单元选 择正常画面信号通过， 有机发光显示面板接收电流增加单元提供的寄存的增加 至预定电流的实时电流并接受时序控制单元根据正常画面信号的驱动而显示 正常画面。
2、 根据权利要求 1所述的有机发光显示器， 其中， 所述电流增加单元包 括电流侦测单元和半衰期控制单元， 电流侦测单元侦测到电源电路提供给有机 发光显示面板的实时电流低于预定电流时， 半衰期控制单元产生控制信号来改 变电源电路的电压以增加实时电流至预定电流并寄存增加至预定电流的实时 电流。
3、 根据权利要求 1所述的有机发光显示器， 其中， 还包括计时单元， 计 时至预定时间时产生时间信号； 当有机发光显示面板显示正常画面时， 时间信 号控制选择单元选择所述测试画面信号通过。
4、 根据权利要求 2所述的有机发光显示器， 其中， 还包括计时单元， 计 时至预定时间时产生时间信号； 当有机发光显示面板显示正常画面时， 时间信 号控制选择单元选择所述测试画面信号通过。
5、 根据权利要求 1所述的有机发光显示器， 其中， 还包括外部控制信号
输入端， 用于输入外部控制信号； 当有机发光显示面板显示正常画面时， 外部 控制信号控制选择单元选择所述测试画面信号通过。
6、 根据权利要求 2所述的有机发光显示器， 其中， 还包括外部控制信号 输入端， 用于输入外部控制信号； 当有机发光显示面板显示正常画面时， 外部 控制信号控制选择单元选择所述测试画面信号通过。
7、 一种有机发光显示器的半衰期寿命的延长方法， 其中， 包括歩骤： a) 侦测到有机发光显示器开机时发出侦测开机信号； b ) 产生测试画面信号； c) 侦测开机信号控制选择单元选择测试画面信号通过； d ) 根据测试画面信号驱动有机发光显示面板显示测试画面； e) 侦测由电源电路提供给有机发光显示面板的实时电流并将侦测到的实 时电流与预定电流比较； f) 当实时电流低于预定电流时， 增加实时电流至预定电流并寄存增加至 预定电流的实时电流； g) 正常画面信号控制选择单元选择正常画面信号通过， 根据正常画面信 号驱动有机发光显示面板， 同时将寄存的增加至预定电流的实时电流提供给有 机发光显示面板， 使得有机发光显示面板显示正常画面。
8、 根据权利要求 7所述的延长方法， 其中， 所述有机发光显示器包括计 时单元， 计时至预定时间时产生时间信号； 在所述歩骤 g) 中， 当有机发光显 示面板显示正常画面时， 时间信号控制选择单元选择测试画面信号通过， 而后 返回歩骤 d)。
9、 根据权利要求 7所述的延长方法， 其中， 所述有机发光显示器包括外 部控制信号输入端， 用于输入外部控制信号； 在所述歩骤 g) 中， 当有机发光 显示面板显示正常画面时， 外部控制信号控制选择单元选择测试画面信号通 过， 而后返回歩骤 d)。
10、 一种有机发光显示器的驱动电路， 其中， 包括： 开机侦测单元， 侦测有机发光显示器开机时发出侦测开机信号;
测试画面产生单元， 产生测试画面信号， 侦测开机信号控制选择单元选择 测试画面信号通过， 时序控制单元根据测试画面信号驱动有机发光显示面板显 示测试画面； 电流增加单元， 当测试画面显示时， 电流增加单元侦测到由电源电路提供 给有机发光显示面板的实时电流低于预定电流时， 增加实时电流至预定电流并 寄存增加至预定电流的实时电流； 正常画面信号输入端， 输入正常画面信号， 正常画面信号控制选择单元选 择正常画面信号通过， 有机发光显示面板接收电流增加单元提供的寄存的增加 至预定电流的实时电流并接受时序控制单元根据正常画面信号的驱动而显示 正常画面。
11、 根据权利要求 10所述的驱动电路， 其中， 所述电流增加单元包括电 流侦测单元和半衰期控制单元， 电流侦测单元侦测到电源电路提供给有机发光 显示面板的实时电流低于预定电流时， 半衰期控制单元产生控制信号来改变电 源电路的电压以增加实时电流至预定电流并寄存增加至预定电流的实时电流。
12、 根据权利要求 10所述的驱动电路， 其中， 还包括计时单元， 计时至 预定时间时产生时间信号； 当有机发光显示面板显示正常画面时， 时间信号控 制选择单元选择所述测试画面信号通过。
13、 根据权利要求 11 所述的驱动电路， 其中， 还包括计时单元， 计时至 预定时间时产生时间信号； 当有机发光显示面板显示正常画面时， 时间信号控 制选择单元选择所述测试画面信号通过。
14、 根据权利要求 10所述的驱动电路， 其中， 还包括外部控制信号输入 端， 用于输入外部控制信号； 当有机发光显示面板显示正常画面时， 外部控制 信号控制选择单元选择所述测试画面信号通过。
15、 根据权利要求 11所述的驱动电路， 其中， 还包括外部控制信号输入 端， 用于输入外部控制信号； 当有机发光显示面板显示正常画面时， 外部控制 信号控制选择单元选择所述测试画面信号通过。
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