KR20080059942A - Video display apparatus with function of frame and method for video display the same - Google Patents

Abstract

An image display device having a picture frame function and an image display method therefor are provided to display an image on a display device also in the power-off of a body in consideration of an environment beautification function. A body(20) supplies a signal to a display device for displaying an image. An LCD(Liquid Crystal Display) displays the signal provided from the body. The LCD includes a liquid crystal panel(10), a data driver(12), a gate driver, a backlight unit(16), a backlight control unit(18), and a timing controller(22). The liquid crystal panel has liquid crystal cells disposed as a matrix type in cross parts of data lines and gate lines. The data driver provides a data signal to the data line. The gate driver provides a gate signal to the gate line. The backlight unit irradiates a beam to the liquid crystal panel. The backlight control unit controls the driving of the backlight unit. The timing controller generates a control signal for controlling the data driver and the gate driver according as the sub-power of the body is turned on or off.

Description

Video Display Apparatus with function of Frame and method for Video Display the same}

1 is a block diagram of a video display device having a picture frame function according to the present invention

2A and 2B are diagrams illustrating unit pixels constituting the liquid crystal panel.

3 is a flowchart illustrating an image display method of an image display apparatus performing a frame function according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: liquid crystal panel 12: data driver

14: Gate Driver 16: Backlight Unit

18: backlight control unit 20: main body

22: timing controller

The present invention relates to an image display apparatus and an image display method, and more particularly, an image having a picture frame function having a function of displaying an image on a display means even when the main body is turned off in consideration of environmentally beautiful functions. A display device and an image display method.

In general, an image display device may be broadly classified into a main body supplying a signal to a constituent means for displaying an image, and a display means displaying externally the image data supplied from the main body.

However, when there is no signal input to the power supply of the main body, i.e., the display means (e.g., display panel) displayed by the main body (e.g. PC, TV, etc.), the display means is turned on. Is not displayed even if

As such, the display means displays an image only when the power of the main body supplying the signal is turned on.

This is because only the display function of the display means is prioritized so that the environmental beautification aspects are not considered at all, there is a problem that the utilization of the display means falls.

An object of the present invention for solving the above problems is an image display apparatus and an image display method having a frame function having a function to display an image on the display means even when the main body is turned off in consideration of the environmental beautification function In providing.

According to an aspect of the present invention, there is provided a video display device having a picture frame function according to a main body supplying a signal for displaying an image, and a sub-power of the main body being turned on or off. It includes a liquid crystal display device having a timing controller for generating a signal.

The liquid crystal display device includes a liquid crystal panel including a liquid crystal cell disposed at an intersection of data lines and gate lines, a gate driver for supplying a gate signal to the gate line, and a data signal for supplying a data signal to the data line. And a data driver, a backlight unit for irradiating light to the liquid crystal panel, and a backlight controller for controlling the backlight unit.

The main power supply of the main body is in an on state.

When the sub-power of the main body is turned off, the timing controller generates a frame function image signal and supplies the picture frame image signal to the gate driver and the data driver.

The timing controller further generates a frame function driving signal supplied to the backlight controller.

The liquid crystal panel is a transflective liquid crystal panel including a transflective unit pixel.

The transflective liquid crystal panel further includes a transmissive unit pixel.

An image display method of an image display apparatus having a frame function according to the present invention for achieving the above object is a main body for supplying a signal for displaying the image, the sub-power of the main body (on) or off (off) An image display device having a picture frame function comprising a liquid crystal display device having a timing controller for generating a signal in accordance with a predetermined state, the image display device comprising: storing a picture frame function image in the timing controller; Determining whether or not the control unit has been turned on; if the sub-power of the main body is turned off, generating a frame function image signal in a timing controller; and displaying a frame function image according to the frame function image signal on the LCD. It includes a step.

The main power supply of the main body is in an on state.

An embodiment of an image display apparatus and an image display method having a frame function according to the present invention having the above characteristics will be described in more detail with reference to the accompanying drawings.

1 is a block diagram of a video display device having a picture frame function according to the present invention.

As shown in FIG. 1, an image display apparatus having a picture frame function includes a main body 20 for supplying a signal to display means for displaying an image, and a liquid crystal display for displaying a signal supplied from the main body 20. Include.

The liquid crystal display includes a liquid crystal panel 10 having liquid crystal cells Clc disposed in a matrix at an intersection of the data lines DL and the gate lines GL, and a data signal on the data line DL. A data driver 12 for supplying a light source, a gate driver 14 for supplying a gate signal to the gate line GL, a backlight unit 16 for irradiating light to the liquid crystal panel 10, and a backlight. The backlight controller 18 for controlling the driving of the unit 16 and the sub-power of the main body 20 (for example, switch means for turning on or off the power supplied to the main body 20) are turned on. Or a timing controller 22 for generating a control signal for controlling the data driver 12 and the gate driver 14 when it is off.

The liquid crystal panel 10 includes a plurality of liquid crystal cells Clc arranged in a matrix at the intersections of the data lines DL and the gate lines GL. The TFTs formed in each of the liquid crystal cells Clc supply a data signal supplied from the data lines DL to the liquid crystal cell Clc in response to a scan signal supplied from the gate line GL. Each of the liquid crystal cells Clc is provided with a storage capacitor Cst, and the storage capacitor Cst maintains a constant voltage of the liquid crystal cell Clc.

The data driver 12 converts the digital video data R, G, and B into an analog gamma voltage (i.e., a data signal) corresponding to the gray scale value in response to the data control signal DCS from the timing controller 8. The analog gamma voltage is supplied to the data lines DL.

The gate driver 14 sequentially supplies the gate signal to the gate lines GL in response to the gate control signal GCS from the timing controller 22 to form a horizontal line of the liquid crystal panel 2 to which the data signal is supplied. Choose.

The main body 20 supplies the vertical / horizontal synchronization signals V and H, the clock signal DCLK, and the data enable signal DE to the timing controller 22. In addition, the main body 20 compresses the parallel digital data into serial data using a low voltage differential signal (LVDS) interface and supplies the same to the timing controller 22.

At this time, the main power (for example, an outlet directly connected to the power supply) of the main body 20 and the sub power (for example, switch means for turning on or off the power supplied to the main body 20) are turned on. In this case, the timing controller 22 uses the vertical / horizontal synchronization signals V and H, the clock signal DCLK, the data enable signal DE, and the like to receive the data driver 12 and the data driver 12. A data control signal DCS and a gate control signal GCS for controlling the gate driver 14 are generated, and a driving signal BC for driving the backlight controller 18 is generated. In addition, the data driver 12 and the gate driver 14 may supply a data signal supplied to the data line DL and a gate supplied to the gate line GL in response to the data control signal DCS and the gate control signal GCS. The signal is generated, and the backlight controller 18 drives the backlight unit 16 in response to the driving signal BC. Therefore, the liquid crystal panel 10 irradiates an image supplied from the main body 20 in response to a data signal applied to the data line DL and a gate signal applied to the gate line GL by driving the backlight unit 16. Indicated by the light.

When the main power supply of the main body 20 is on and the sub power supply is off, the timing controller 22 uses the frame function selection signal FSS received from the main body 20 to transmit the data driver 12. And generates a frame function image signal FSI for controlling the gate driver 14, and generates a frame function drive signal FSC for driving the backlight controller 18. The data driver 12 and the gate driver 14 generate a data frame function image signal supplied to the data line DL and a gate frame function image signal supplied to the gate line in response to the frame function image signal FSI. In addition, the backlight controller 18 drives the backlight unit 16 in response to the frame function driving signal FSC. Accordingly, the liquid crystal panel 10 drives the frame unit image based on the data frame function image signal applied to the data line DL and the gate frame function image signal applied to the gate line GL. It is displayed by the irradiated light.

Therefore, even when the sub power supply of the main body 20 is turned off, the picture frame function image can be displayed on the liquid crystal display in consideration of the environmental beautifying function.

On the other hand, when the sub-power of the main body is off (off), when the power (for example, the outlet directly connected to the power supply) of the liquid crystal display device is turned on, the liquid crystal display device displays a frame function image is displayed. In addition, even when the power of the LCD is turned off, the LCD may display a frame function image. This is possible by using a transflective liquid crystal panel including a transflective unit pixel in which the reflecting unit 32b and the transmissive unit 32a are provided in one unit pixel.

In other words, when the power of the liquid crystal display is turned on, the backlight unit 16 is driven in response to the driving signal FSC, so that the transflective liquid crystal panel 10 uses the backlight as a light source. When the frame function image is displayed and the power of the LCD is turned off, the power of the backlight controller 18 is cut off so that the backlight unit 16 is not driven. ) Displays a frame function image due to the reflector 32b reflecting external natural light or artificial light and using the light as a light source.

In this case, the transflective liquid crystal panel 10 may be formed of only the transflective unit pixel 32, as shown in FIG. 2A, and as shown in FIG. 2B, the transflective unit pixel 32 and the transmissive unit pixel The 34 may be alternately arranged.

3 is a flowchart of an image display method of an image display apparatus performing a frame function according to the present invention.

First, in the image display apparatus performing the frame function of FIG. 1, the step S1 of storing the frame function image in the timing controller is performed.

Subsequently, it is a step (S2) of determining whether or not the sub-power (for example, switch means for turning on or off the power supplied to the main body) of the main body 20 is turned off. At this time, when the sub-power of the main body is off, the main power of the main body (for example, an outlet directly connected to the power supply) should be turned on.

If the sub-power of the main body is turned on, move to step S32 of generating a data control signal DCS and a gate control signal GCS in the timing controller, and if the sub-power of the main body is turned off, the frame function image is output from the timing controller. Proceeding to step S31 of generating a signal FSI.

Subsequently, the display according to the data control signal DCS and the gate control signal GCS generated in step S32 is displayed on the liquid crystal panel in step S42, and the frame function image signal generated in step S31 is displayed. The display method is completed by moving to the step S41 of displaying the frame function image according to the FSI on the liquid crystal panel.

As described above, the image display apparatus having the picture frame function and the image display method according to the present invention have a function of allowing the display means to display an image even when the main body is turned off in consideration of the environmental beautification function. It works.

Claims (9)

A main body which supplies a signal for displaying an image, And a liquid crystal display device having a timing controller for generating a signal according to a state in which the sub-power of the main body is turned on or off. The liquid crystal display of claim 1, wherein A liquid crystal panel having a liquid crystal cell disposed at an intersection of the data lines and the gate lines; A gate driver for supplying a gate signal to the gate line; A data driver for supplying a data signal to the data line; A backlight unit for irradiating light to the liquid crystal panel; And a backlight control unit for controlling the backlight unit. According to claim 1, wherein the main power source of the main body Image display apparatus having a frame function, characterized in that the on state. The timing controller of claim 1, wherein the timing controller is turned off when the sub-power of the main body is turned off. Frame function The image display device having a frame function, characterized in that for generating a video signal and supplying it to the gate driver and the data driver. The image display device of claim 4, wherein the timing controller further generates a frame function driving signal supplied to the backlight controller. The liquid crystal panel of claim 2, wherein the liquid crystal panel An image display device having a frame function, characterized in that the transflective liquid crystal panel including a transflective unit pixel. The liquid crystal panel of claim 6, wherein the transflective liquid crystal panel An image display device having a frame function, further comprising a transmissive unit pixel. And a picture frame function including a liquid crystal display device having a main body for supplying a signal for displaying an image and a timing controller for generating a signal according to a state in which the sub-power of the main body is turned on or off. In the video display device, Storing a frame function image in the timing controller; Determining whether the sub power of the main body is turned off; Generating a frame function image signal in a timing controller when the sub power of the main body is turned off; And displaying a frame function image according to the frame function image signal on the liquid crystal display device. The method of claim 8, wherein the main power source of the main body Image display apparatus having a frame function, characterized in that the on state.

Images