TWI397052B - Display method for liquid crystal display - Google Patents
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- TWI397052B TWI397052B TW98118796A TW98118796A TWI397052B TW I397052 B TWI397052 B TW I397052B TW 98118796 A TW98118796 A TW 98118796A TW 98118796 A TW98118796 A TW 98118796A TW I397052 B TWI397052 B TW I397052B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 35
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- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000005693 optoelectronics Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Description
本發明是有關於一種顯示方法，且特別是有關於一種液晶電視的顯示方法。The present invention relates to a display method, and more particularly to a display method of a liquid crystal television.
近年來，隨著光電技術與半導體製造技術的日益成熟，平面顯示裝置便蓬勃發展起來。其中，液晶電視基於其低電壓操作、無輻射線散射、重量輕以及體積小等優點，更逐漸取代傳統的陰極射線管電視而成為近年來電視產品之主流。In recent years, with the increasing maturity of optoelectronic technology and semiconductor manufacturing technology, flat display devices have flourished. Among them, based on its low voltage operation, no radiation scattering, light weight and small size, LCD TVs have gradually replaced traditional cathode ray tube TVs and become the mainstream of TV products in recent years.
傳統的液晶電視在未接收到無射頻訊號或周邊視聽設備無訊號輸入時，會顯示雪花狀的畫面或藍幕讓使用者知道現在為無訊號狀態。此時，液晶電視之背光模組所提供的背光源依然維持原有之亮度而消耗電能，造成不必要的能源浪費。另外，當周邊視聽設備所輸入的訊號固定不變時，例如使用者按下暫停鍵時，背光模組所提供的背光源也同樣維持原有之亮度而浪費能源。隨著環保意識逐漸抬頭以及產品節能要求逐漸提高，部分傳統的液晶電視在持續一段時間無訊號輸入或輸入的訊號固定不變時，會直接關閉液晶電視的背光模組與液晶面板以達到節能目的。然而，這種方式會讓使用者無法瞭解液晶電視關閉是因為無訊號輸入或輸入的訊號固定不變，造成使用者在使用液晶電視時的不便。When a conventional LCD TV does not receive an RF-free signal or a peripheral audio-visual device has no signal input, it will display a snow-like screen or a blue screen to let the user know that there is no signal status. At this time, the backlight provided by the backlight module of the LCD TV still maintains the original brightness and consumes electric energy, thereby causing unnecessary energy waste. In addition, when the signal input by the peripheral audio-visual device is fixed, for example, when the user presses the pause button, the backlight provided by the backlight module also maintains the original brightness and wastes energy. With the gradual rise of environmental awareness and the increasing demand for energy-saving products, some traditional LCD TVs will directly turn off the backlight module and LCD panel of the LCD TV to save energy when the signal input or input signal is fixed for a period of time. . However, this method will make it impossible for the user to understand that the LCD TV is turned off because no signal input or input signal is fixed, which causes inconvenience to the user when using the LCD TV.
本發明提供一種液晶電視的顯示方法，可達成節能效果又不會降低液晶電視在使用上的便利性。The invention provides a display method of a liquid crystal television, which can achieve energy saving effect without reducing the convenience of use of the liquid crystal television.
本發明的一種液晶電視的顯示方法包括下列步驟。首先，開啟液晶電視的一背光模組以提供具有一第一亮度的一背光源，並開啟液晶電視的一液晶面板以持續顯示一訊號源所提供的輸入訊號。接著，當訊號源所提供的輸入訊號維持不變的時間或訊號源停止提供輸入訊號的時間超過一預設期間，使背光模組提供的背光源的亮度由第一亮度開始降低，並持續開啟液晶面板。然後，當訊號源所提供的輸入訊號再度開始變化或訊號源重新開始提供輸入訊號，使背光模組提供的背光源的亮度恢復為第一亮度。A display method of a liquid crystal television of the present invention includes the following steps. First, a backlight module of the LCD TV is turned on to provide a backlight having a first brightness, and a liquid crystal panel of the liquid crystal television is turned on to continuously display an input signal provided by a signal source. Then, when the input signal provided by the signal source remains unchanged or the signal source stops providing the input signal for more than a predetermined period, the brightness of the backlight provided by the backlight module is reduced by the first brightness, and is continuously turned on. LCD panel. Then, when the input signal provided by the signal source starts to change again or the signal source resumes providing the input signal, the brightness of the backlight provided by the backlight module is restored to the first brightness.
在本發明之液晶電視的顯示方法的一實施例中，使背光源的亮度降低的步驟包括逐漸降低背光源的亮度。In an embodiment of the display method of the liquid crystal television of the present invention, the step of reducing the brightness of the backlight includes gradually reducing the brightness of the backlight.
在本發明之液晶電視的顯示方法的一實施例中，使背光源的亮度降低的步驟包括關閉背光模組。In an embodiment of the display method of the liquid crystal television of the present invention, the step of reducing the brightness of the backlight includes turning off the backlight module.
在本發明之液晶電視的顯示方法的一實施例中，使背光源的亮度降低的步驟包括降低背光模組的驅動電流的大小。In an embodiment of the display method of the liquid crystal television of the present invention, the step of reducing the brightness of the backlight includes reducing the magnitude of the driving current of the backlight module.
在本發明之液晶電視的顯示方法的一實施例中，顯示方法更包括由一使用者設定預設期間。In an embodiment of the display method of the liquid crystal television of the present invention, the display method further comprises setting a preset period by a user.
基於上述，本發明之液晶電視的顯示方法可利用降低背光源的亮度的方式達到節能目的，又可讓使用者由持續開啟的液晶面板瞭解目前的使用狀態而增加液晶電視在使用上的便利性。Based on the above, the display method of the liquid crystal television of the present invention can achieve the purpose of energy saving by reducing the brightness of the backlight, and allows the user to understand the current state of use by the continuously open liquid crystal panel to increase the convenience of the use of the LCD TV. .
為讓本發明之上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。The above described features and advantages of the present invention will be more apparent from the following description.
圖1為本發明一實施例之液晶電視的顯示方法的流程圖。本實施例的顯示方法適用於液晶電視。液晶電視包括液晶面板與背光模組。液晶面板用於顯示訊號源所提供的輸入訊號，訊號源例如是DVD播放器、有線/無線電視訊號源、電腦或是其他訊號源。背光模組用以提供液晶面板所需的背光源。背光模組例如是使用冷陰極螢光燈管、發光二極體或其他發光元件。1 is a flow chart showing a display method of a liquid crystal television according to an embodiment of the present invention. The display method of this embodiment is applicable to a liquid crystal television. The LCD TV includes a liquid crystal panel and a backlight module. The LCD panel is used to display the input signal provided by the signal source, such as a DVD player, a cable/wireless TV signal source, a computer or other signal source. The backlight module is used to provide a backlight required for the liquid crystal panel. The backlight module uses, for example, a cold cathode fluorescent lamp, a light emitting diode, or other light emitting elements.
請參照圖1，首先開啟液晶電視的背光模組以提供具有一第一亮度的背光源，同時開啟液晶電視的液晶面板以持續顯示訊號源所提供的輸入訊號，如步驟S10。具體而言，步驟S10中背光模組所提供的背光源的第一亮度是以能讓液晶電視正常顯示為原則。通常，在此所指的第一亮度可讓使用者依個人喜好進行調整。Referring to FIG. 1, the backlight module of the LCD TV is first turned on to provide a backlight having a first brightness, and the liquid crystal panel of the liquid crystal television is turned on to continuously display the input signal provided by the signal source, as shown in step S10. Specifically, the first brightness of the backlight provided by the backlight module in step S10 is based on the principle that the liquid crystal television can be normally displayed. Generally, the first brightness referred to herein allows the user to adjust to his or her preference.
接著，如步驟S20，當訊號源所提供的輸入訊號維持不變的時間超過一預設期間，或是當訊號源停止提供輸入訊號的時間超過此預設期間，則使背光模組提供的背光源的亮度由第一亮度開始降低，並持續開啟液晶面板。舉例而言，液晶電視開啟後，即持續偵測訊號源所提供的輸入訊號的狀態。當訊號源所提供的輸入訊號維持不變(例如使用者按下DVD播放器的暫停鍵)，且維持不變的時間超過預設期間，就將背光源的亮度由第一亮度開始降低。或者，當訊號源不再提供輸入訊號(例如電視訊號斷訊或是節目播放完畢)，且未輸入訊號的時間超過預設期間，也將背光源的亮度由第一亮度開始降低。其中，背光源的亮度可以是逐漸的降低或是直接降到預設的亮度。最終，可選擇完全關閉背光源或是將背光源的亮度維持在比第一亮度低的水準，同時持續開啟液晶面板，以讓使用者可明顯看出目前液晶電視處於非正常顯示的狀態。Then, in step S20, when the input signal provided by the signal source remains unchanged for more than a predetermined period, or when the signal source stops providing the input signal for more than the preset period, the backlight provided by the backlight module is provided. The brightness of the source begins to decrease from the first brightness and continues to open the liquid crystal panel. For example, after the LCD TV is turned on, the status of the input signal provided by the signal source is continuously detected. When the input signal provided by the signal source remains unchanged (for example, the user presses the pause button of the DVD player) and remains unchanged for more than the preset period, the brightness of the backlight is lowered from the first brightness. Alternatively, when the signal source no longer provides an input signal (for example, the television signal is disconnected or the program is played), and the time when the signal is not input exceeds the preset period, the brightness of the backlight is also lowered from the first brightness. The brightness of the backlight may be gradually reduced or directly decreased to a preset brightness. Finally, you can choose to completely turn off the backlight or maintain the brightness of the backlight at a lower level than the first brightness, while continuously turning on the LCD panel, so that the user can clearly see that the LCD TV is in an abnormal display state.
此外，前述的預設期間可以是由液晶電視的製造商在出廠前完成設定，但也可以開放給使用者依需求而自行設定。另外，降低背光源的亮度的方式例如是降低背光模組的驅動電流的大小。In addition, the aforementioned preset period may be set by the manufacturer of the LCD TV before leaving the factory, but may also be opened to the user to set according to the requirements. In addition, the method of reducing the brightness of the backlight is, for example, reducing the magnitude of the driving current of the backlight module.
然後，如步驟S30，當訊號源所提供的輸入訊號再度開始變化(例如使用者按下DVD播放器的播放鍵)，或是當訊號源重新開始提供輸入訊號(例如電視訊號恢復)，則使背光模組提供的背光源的亮度恢復為第一亮度。亦即是，液晶電視恢復到正常顯示的狀態。Then, in step S30, when the input signal provided by the signal source starts to change again (for example, the user presses the play button of the DVD player), or when the signal source resumes providing the input signal (for example, TV signal recovery), The brightness of the backlight provided by the backlight module is restored to the first brightness. That is, the LCD TV is restored to the normal display state.
綜上所述，在本發明之液晶電視的顯示方法中，當液晶電視處於斷訊或訊號固定不變的非正常顯示狀態時，背光模組提供的背光源的亮度被降低，但液晶面板則持續開啟。因此，可利用降低背光源的亮度的方式進行節能，使用者又可由持續開啟的液晶面板瞭解目前的使用狀態，進而在節能的同時增加使用上的便利性。In summary, in the display method of the liquid crystal television of the present invention, when the liquid crystal television is in an abnormal display state in which the signal is fixed or the signal is fixed, the brightness of the backlight provided by the backlight module is lowered, but the liquid crystal panel is Keep on. Therefore, it is possible to save energy by reducing the brightness of the backlight, and the user can understand the current state of use by the liquid crystal panel that is continuously turned on, thereby increasing the convenience of use while saving energy.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，故本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.
S10~S30‧‧‧步驟S10~S30‧‧‧Steps
圖1為本發明一實施例之液晶電視的顯示方法的流程圖。1 is a flow chart showing a display method of a liquid crystal television according to an embodiment of the present invention.
S10～S30．．．步驟S10~S30. . . step
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050270265A1 (en) * | 2003-07-16 | 2005-12-08 | Plut William J | LCD plateau power conservation |
| TW200813975A (en) * | 2006-09-13 | 2008-03-16 | Mstar Semiconductor Inc | Method and apparatus for displaying image on a display unit and controlling backlight module which irradiates the display unit |
| TW200917227A (en) * | 2007-10-12 | 2009-04-16 | Delta Electronics Inc | Liquid crystal display device and aparatus and method for controlling luminance of liquid crystal panel thereof |
| TW200923903A (en) * | 2007-11-16 | 2009-06-01 | Acer Inc | Liquid crystal display with LED backlight unit and light correcting unit |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050270265A1 (en) * | 2003-07-16 | 2005-12-08 | Plut William J | LCD plateau power conservation |
| TW200813975A (en) * | 2006-09-13 | 2008-03-16 | Mstar Semiconductor Inc | Method and apparatus for displaying image on a display unit and controlling backlight module which irradiates the display unit |
| TW200917227A (en) * | 2007-10-12 | 2009-04-16 | Delta Electronics Inc | Liquid crystal display device and aparatus and method for controlling luminance of liquid crystal panel thereof |
| TW200923903A (en) * | 2007-11-16 | 2009-06-01 | Acer Inc | Liquid crystal display with LED backlight unit and light correcting unit |
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