This application claims the priority benefit of Taiwan application serial no. 96113179, filed on Apr. 14, 2007. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
1. Field of the Invention
The present invention relates to a display method and a device thereof. More particularly, the present invention relates to a display method with interlacing reversal scan and a device thereof.
2. Description of Related Art
In recent years, flat panel displays are developed rapidly owing to mature photoelectric technology and semiconductor manufacturing technology. Liquid crystal displays (LCD) advantageous in low-voltage operation, no-radiation, lightness, and small volume have gradually replaced conventional cathode-ray tube (CRT) displays and become a mainstream produce in the market.
An LCD mainly includes a liquid crystal panel and a backlight module. As the liquid crystal which is injected into the liquid crystal panel does not emit light itself, the liquid crystal panel must be illuminated by a surface light source provided by the backlight module, so that the LCD can display.
The color display mixing can be classified into a temporal color mixing and a spatial color mixing methods. For the color display mixing of a display, currently, spatial with additive color mixing is generally applied to a display. Taking thin-film transistor LCD (TFT-LCD) for example, each pixel which is composed of three sub-pixels of red, green, blue (RGB) distributed on a color filter, and when the sub-pixels are small beyond the distinguishable viewing angle of human eyes, a color mixing effect is observed by visual perception.
If the spatial color mixing of the TFT-LCD is replaced by a temporal color mixing, the color filter is not used for achieving the color mixing effect, the backlight source is directly used with relative data display to achieve the temporal color mixing effect, thereby increasing the transmission rate of the module and saving the overall manufacturing cost of the module.
It may be clearly observed from the above description that the problem of uneven color distribution between the up-side and the down-side region exists the conventional art. If the problem is solved by increasing the operating frequency, the hardware cost will be increased. Further, if the problem is solved by reversal scan mode, a serious flicker phenomenon is incurred.
In view of the above, panel manufacturers are in urgent need of a proper solution to solve the aforementioned problems.
The present invention is directed to a display method with interlacing reversal scan, for balancing color distribution between the up-side and the down-side region, and effectively reducing the flicker phenomenon of a frame.
The present invention is also directed to a display method with interlacing reversal scan, which cannot only balance color distribution between the up-side and the down-side region without increasing the operating frequency and the cost, but also alleviate the flicker phenomenon of a frame as well as reduce color breakup.
The present invention is further directed to a display device with interlacing reversal scan for balancing color distribution between the up-side and the down-side region, and effectively reducing the flicker phenomenon of a frame.
As embodied and broadly described herein, a display method with interlacing reversal scan is provided. The method includes in a first frame scanning period, alternately scanning a plurality of odd scan lines and a plurality of even scan lines in an odd/even interlacing sequence, in which a scanning sequence of the odd scan lines is from an up-side of the first frame to a down-side of the first frame, and a scanning sequence of an even scan lines is from the down-side of the first frame to the up-side of the first frame.
In the display method with interlacing reversal scan according to an embodiment of the present invention, the display method further includes in a second frame scanning period, alternately scanning the odd scan lines and the even scan lines in an odd/even interlacing sequence, in which a scanning sequence of the odd scan lines is from a down-side of the second frame to an up-side of the second frame, and a scanning sequence of the even scan lines is from the up-side of the second frame to the down-side of the second frame.
As embodied and broadly described herein, a display method with interlacing reversal scan is provided. The method includes in a first frame scanning period, scanning a plurality of odd scan lines and a plurality of even scan lines in an odd/even sequence, in which a scanning sequence of the odd scan lines is from an up-side of the first frame to a down-side of the first frame, and a scanning sequence of the even scan lines is from the down-side of the first frame to the up-side of the first frame.
In the display method with interlacing reversal scan according to an embodiment of the present invention, the display method further includes in a second frame scanning period, scanning the odd scan lines and the even scan lines in an odd/even sequence, in which a scanning sequence of the odd scan lines is from a down-side of the second frame to an up-side of the second frame, and a scanning sequence of the even scan lines is from an up-side of the second frame to a down-side of the second frame.
As embodied and broadly described herein, a display device of interlacing reversal scan including a timing control unit and a panel module is provided. The timing control unit is used for receiving a video source, and outputting a first control signal and a second control signal according to the video source. The panel module is coupled to the timing control unit, for respectively driving a plurality of odd scan lines and a plurality of even scan lines of the panel module according to the first control signal and the second control signal, so as to display a plurality of frames. In a first frame scanning period, the odd scan lines and the even scan lines are alternately scanned in an odd/even interlacing sequence, the scanning sequence of the odd scan lines is from the up-side of the first frame to the down-side of the first frame, and the scanning sequence of the even scan lines is from the down-side of the first frame to the up-side of the first frame.
In the display device with interlacing reversal scan according to an embodiment of the present invention, in a second frame scanning period, the odd scan lines and the even scan lines are alternately scanned in an odd/even interlacing sequence, in which the scanning sequence of the odd scan lines is from the down-side of the second frame to the up-side of the second frame, and the scanning sequence of the even scan lines is from the up-side of the second frame to the down-side of the second frame.
The scan manner of the present invention is achieved by the interlacing reversal scan. Thus, no matter in time and space, each color frame with poor luminance response can be alternately distributed on the up-side and the down-side region of the frame instead of being concentrated on the down-side region. As such, during the period of continuous frame displaying, the present invention can not only balance color distribution between the up-side and the down-side region without increasing the operating frequency and the cost, but also alleviate the flicker phenomenon of the frame as well as reduce the color breakup.
In order to make the aforementioned and other objectives, features, and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed.
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
A subsidiary data stream change unit 722 of the FSD controller 720 is for converting a spatial parallel RGB signal source of the video source 710 into temporal serial R→G→B signals and then outputting it. The video data is enormous in quantity, so the frame memory 730 must be used to store data which is calculated by the FSD controller 720. A subsidiary memory control unit 724 of the FSD controller 720 is for sending out a memory control signal to control the access of the memory. The timing control unit 726 is for controlling the backlight module 740 to lighten a corresponding light source according to different primary color data which is able to be displayed. The FSD controller 720 is to generate a control signal of a source integrated circuit (source IC) 752 and a control signal of a gate integrated circuit (gate IC) 754 for the panel module 750. The direction control signal of the source IC 752 and the gate IC 754 is realized by means of access with 2-way. The direction setting of the driving circuit is controlled by the FSD controller 720. The source IC 752 and the gate IC 754 receive a control signal which is sent from the timing control unit 726 in cooperation with the data stream change unit 722 so as to determine the scanning sequence of the scan lines in the pixel array 756, thereby achieving an interlacing reversal scan mode. The details will be illustrated as follows.
In another embodiment, those of ordinary skill in the art may change the implementation manner of the panel module 750 as required. For example,
In diagram of the above embodiments, the size of the pixel array 756 is fabricated for being increasingly larger according to consumers' requirements. For the convenience of control, those of ordinary skill in the art control the pixel array 756 by divisions as required. For example,
Next, reversal scan is performed on a second frame (red). The odd scan lines and the even scan lines are alternately scanned in an odd/even interlacing sequence. The scanning sequence of the odd scan lines is changed into from the down-side to the up-side, and the scanning sequence of the even scan line is changed into from the up-side to the down-side. In other words, the scanning sequence is scan line 2 (even)→scan line 9 (odd)→scan line 4 (even)→scan line 7 (odd)→scan line 6 (even)→scan line 5 (odd)→scan line 8 (even)→scan line 3 (odd)→scan line 10 (even)→scan line 1 (odd). The scan lines in the lower part of the scanning sequence in the previous frame are turned into be in the upper part of the scanning sequence in this frame. That is, it is not enough that time for the luminance response above the scan lines of the previous frame to reach a set value, as there is enough time for the luminance of this frame to reach a set value. As such, the circumstance that some specific scan lines may have a poor luminance is avoided, and the scanning sequence in a reversal scan mode can achieve a more even luminance than the conventional art.
In a similar way, reversal scan is further performed on a third frame (green), and the scanning sequence is identical to the first frame. Next, the reversal scan is performed again on a fourth frame (green), and the scanning sequence is identical to the second frame. The reversal scan is also performed on a fifth frame (blue) and a sixth frame (blue). When the time for switching between frames is very short, the human eyes may not perceive the differences between the display times of the three primary colors, thereby achieving the color mixing. Therefore each pixel can display a desired color. It should be noted that, as the color mixing is performed by the use of the interlacing reversal scan together with a color sequential method, the color filter is not required for color mixing, color distribution between the up-side and the down-side region of a frame is balanced, and the flicker phenomenon in a large scope is reduced.
Those of ordinary skill in the art may change the scan mode in the above embodiment into scanning the odd and even scan lines simultaneously as required. For example, the scanning sequence of the first frame (red) is changed into scan line 1 (odd) and scan line 10 (even)→scan line 3 (odd) and scan line 8 (even)→scan line 5 (odd) and scan line 6 (even)→scan line 7 (odd) and scan line 4 (even)→scan line 9 (odd) and scan line 2 (even), and the scanning sequence of the second frame (red) is changed into scan line 2 (even) and scan line 9 (odd)→scan line 4 (even) and scan line 7 (odd)→scan line 6 (even) and scan line 5 (odd)→scan line 8 (even) and scan line 3 (odd)→scan line 10 (even) and scan line 1 (odd). The scanning sequences of other frames can be deduced in the same way, and the details will not be described herein again.
Those of ordinary skill in the art can also change the implementation manner according to the spirit of the present invention and teachings from the above embodiments as required. For example,
In view of the above embodiment, the reversal scan is performed on the scanning sequence of a second frame (green), and the scanning sequence is scan line 2 (even)→scan line 9 (odd)→scan line 4 (even)→scan line 7 (odd)→scan line 6 (even)→scan line 5 (odd)→scan line 8 (even)→scan line 3 (odd)→scan line 10 (even)→scan line 1 (odd). Next, the reversal scan is further performed on the scanning sequence of a third frame (blue), and the scanning sequence is scan line 1 (odd)→scan line 10 (even)→scan line 3 (odd)→scan line 8 (even)→scan line 5 (odd)→scan line 6 (even)→scan line 7 (odd)→scan line 4 (even)→scan line 9 (odd)→scan line 2 (even). The scanning sequences and colors of other frames can be deduced in the same way, and the details will not be described herein again. As such, the color mixing effect is achieved, meanwhile color distribution between the up-side and the down-side region of a frame is balanced, and the flicker phenomenon in a large scope is reduced.
Those of ordinary skill in the art may change the scan mode of the above embodiment into scanning the odd and even scan lines by the two ICs simultaneously as required. For example, the scanning sequence of the first frame (red) is changed into scan line 1 (odd) and scan line 10 (even)→scan line 3 (odd) and scan line 8 (even)→scan line 5 (odd) and scan line 6 (even)→scan line 7 (odd) and scan line 4 (even)→scan line 9 (odd) and scan line 2 (even). The reversal scan is performed on the scanning sequence of the second frame (green), and the scanning sequence is scan line 2 (even) and scan line 9 (odd)→scan line 4 (even) and scan line 7 (odd)→scan line 6 (even) and scan line 5 (odd)→scan line 8 (even) and scan line 3 (odd)→scan line 10 (even) and scan line 1 (odd).
In view of the above, the reversal scan is further performed on the scanning sequence of a third frame (blue), and the scanning sequence is scan line 1 (odd) and scan line 10 (even)→scan line 3 (odd) and scan line 8 (even)→scan line 5 (odd) and scan line 6 (even)→scan line 7 (odd) and scan line 4 (even)→scan line 9 (odd) and scan line 2 (even). Other frames can be deduced in the same way, and the details will not be described herein again. As such, not only the color mixing effect is achieved, color distribution between the up-side and the down-side region of a frame is balanced, and the flicker phenomenon in a large scope is reduced, but also the scanning speed of the frame is accelerated.
To sum up, the scan manner of the present invention is realized by interlacing reversal scan. Thus, no matter in time and space, each color frame with poor luminance response may be alternately distributed on the up-side and the down-side region of the frame instead of being concentrated on the down-side region. As such, during the period of continuous frame displaying, the present invention may balance color distribution between the up-side and the down-side region, alleviate the flicker phenomenon of the frame, and reduce the color breakup, without increasing the operating frequency and the cost.
Though the present invention has been disclosed above by the preferred embodiments, they are not intended to limit the present invention. Anybody skilled in the art can make some modifications and variations without departing from the spirit and scope of the present invention. Therefore, the protecting range of the present invention falls in the appended claims.
Number | Date | Country | Kind |
---|---|---|---|
96113179 A | Apr 2007 | TW | national |
Number | Name | Date | Kind |
---|---|---|---|
5365284 | Matsumoto et al. | Nov 1994 | A |
7161573 | Takatori et al. | Jan 2007 | B1 |
20050190170 | Shin | Sep 2005 | A1 |
Number | Date | Country |
---|---|---|
2001014319 | Jan 2001 | JP |
2001281623 | Oct 2001 | JP |
2001290122 | Oct 2001 | JP |
2001318363 | Nov 2001 | JP |
I273546 | Feb 2007 | TW |
Entry |
---|
“1st Office Action of China counterpart application”, issued on Jun. 19, 2009, p. 1-p. 6. |
Number | Date | Country | |
---|---|---|---|
20080252625 A1 | Oct 2008 | US |