JP2001318654A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low production cost display device without largely changing a display area to an image input signal of various resolutions. SOLUTION: This display device is provided with a liquid crystal panel in which three color dots 10 are arranged in a striped form in the vertical direction; an aspect ratio of each dot 10 is formed to be substantially one to one; and each pixel 11 is composed of at least 9 dots of 3 vertical rows ×3 horizontal rows in total or more. Then, image display is performed by changing a data signal and a scanning signal to be supplied to the liquid crystal panel according to the resolutions of the inputted image data, and changing the size of each pixel 11 in the vertical and/or horizontal direction by one dot unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device,
In particular, the present invention relates to a display device capable of handling image data of a plurality of resolutions.

[0002]

2. Description of the Related Art In recent years, various manufacturers have shipped various types of information processing apparatuses and video cards used therein. A display signal (image data) output from these information processing devices to the display device has a plurality of different timing and frequency modes.
There are different resolution modes. Therefore, in a display device that receives such a display signal, it is necessary to correct the screen size and the display position so as to match the display signal in each resolution mode.

[0003] In this regard, in the case of a display device such as a CRT,
Since the pixel size can be changed in an analog manner, any display signal can be displayed without any problem.

On the other hand, in a conventional flat display device, for example, a liquid crystal display device, the size of each pixel in the display panel is structurally determined. Will be displayed using the display area corresponding to.

For example, when an attempt is made to display display signal data having a resolution of 800.times.600 on a liquid crystal display device having a resolution of 1024.times.768, display is performed only in an 800.times.600 area and other parts are not displayed. Area.

However, in this case, there is a problem that the displayed image is smaller than the display screen. Therefore, as a method for solving this problem, the following method has been conventionally considered.

(1) A method of pseudo-enlargement using software or DSP (2) A method of using a liquid crystal display device having a resolution of the least common multiple of various resolutions (3) Japanese Patent Application Laid-Open No. 7-72826 Method of using modified pixels as disclosed

[0008]

However, in the above method (1), since the data is expanded and displayed according to the size of the pixel physically determined by the liquid crystal display device to be used, the original data is displayed. A data change point may occur at a boundary between pixels of the liquid crystal display device different from the data change point. As a result, the method (1) has a problem that the contour of the displayed image appears to be jagged.

In the above method (2), one pixel in the image data is displayed in an image by changing the size of the pixel, for example, 4 pixels and 9 pixels of the liquid crystal display device according to the resolution. However, in this case, since the size of the pixel which can be changed is as large as one step of the pixel, it is necessary to prepare a liquid crystal display device having a very large resolution. Since the resolution accounts for a large proportion of the cost of the liquid crystal display device, increasing the resolution necessarily leads to an increase in cost.

[0010] Further, in a liquid crystal display device, usually, a fine pattern already exists in the horizontal direction, so that it is difficult to further reduce the size in the horizontal direction.

In the above method (3), since different data is transmitted as data for each of R, G, and B colors constituting pixels in the vertical direction, very high-speed data transfer is required to transmit data to the liquid crystal drive electrodes. Need. This means that unnecessary radiation increases and current consumption increases. Further, since a sufficient time for charging the liquid crystal cannot be secured, a large transistor is required, and as a result, performance such as transmittance is deteriorated.

Further, in some cases, pixels that are supposed to be aligned in a straight line are arranged in a zigzag pattern, which causes a problem that an image looks jagged.

The above-mentioned problems are not limited to the liquid crystal display device, but also exist in other flat display devices.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a display device which does not greatly change a display area and has a low manufacturing cost with respect to image input signals of various resolutions. Is to do.

[0015]

According to another aspect of the present invention, there is provided a display device including a display panel in which dots of three colors are arranged in stripes in a vertical direction. A display device in which the ratio is formed substantially in a one-to-one manner, and each pixel is composed of a total of nine or more dots in at least three rows and three columns, and the resolution of input image data is And changing the data signal and the scanning signal supplied to the display panel in accordance with the above, and changing the size of each of the pixels in the vertical direction and / or the horizontal direction in units of one dot to perform image display. I have.

According to the above invention, each pixel is composed of at least nine dots in at least three rows and three columns, and the size of each pixel depends on the resolution of the input image data. Is changed vertically and / or horizontally in units of one dot. Therefore, on the basis of the case where each pixel is composed of a minimum of 9 dots, the pixel size can be changed in the vertical direction and the horizontal direction in steps of 1/3. Can be adjusted. In addition, this does not significantly change the display area for image input signals of various resolutions,
Display resolution can be changed.

Further, according to the present invention, it is not necessary to increase the number of dots in the horizontal direction on the display panel as compared with the related art.
The display size for various resolutions can be made more uniform.

Therefore, it is possible to provide a display device which does not greatly change the display area for image input signals of various resolutions and has a low manufacturing cost.

Here, "vertical direction" and "horizontal direction" mean the vertical direction and the horizontal direction of the display screen, respectively.

In the display device of the present invention, resolution identifying means for identifying the resolution of the input image data, and at least a part of the input image data is converted according to the resolution identified by the resolution identifying means. A data conversion unit, a drive data generation unit that generates drive data based on the data converted by the data conversion unit, and a data signal and a scan signal that are generated based on the drive data generated by the drive data generation unit. And a driving unit for supplying each signal to the display panel, whereby the data signal and the scanning signal supplied to the display panel are changed according to the resolution of the input image data. The size of each pixel can be changed vertically and / or horizontally in units of one dot.

In the display device of the present invention, it is preferable that the number of dots in the vertical direction and the number of dots in the horizontal direction are the same in each pixel.
The display resolution can be changed by changing the pixel size in the vertical and horizontal directions in the same step.

Further, in the display device of the present invention, it is preferable that the number of dots in the vertical direction and the number of dots in the horizontal direction are different depending on the pixel, so that when the size of the pixel is changed, The display resolution can be changed by independently scaling the vertical and horizontal directions.

Further, in the display device of the present invention, when a dot of a color whose number of dots is n (where n is an integer of 1 or more) larger than that of another color dot is present in a pixel, the n number of dots It is preferable that the dots be in a black display state, whereby the number of dots of each color can be made equal to each other except for the n dots.

Further, in the display device of the present invention, when a dot of a color having a number n (where n is an integer of 1 or more) larger than that of the other color dots is present in a pixel, the n number of dots are used. It is preferable that the dots also have a configuration that contributes to the display of the color, so that the entire pixel can contribute to the display and the pixel can be kept from being interrupted.
The continuity of the screen can be expressed.

[0025]

[Embodiment 1] A display device according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 14 and FIG.

A liquid crystal display device 1 as a display device according to the present embodiment is connected to an external information processing device via, for example, a video board for digitizing image data. As shown in the figure, the apparatus includes a resolution identification unit 2, a data conversion unit 3, a drive data generation unit 4, a source drive unit 5, a gate drive unit 6, and a liquid crystal panel (display panel) 7.

The resolution identifying means 2 is a circuit for identifying the resolution of the image data based on the image data from the video board. The resolution can be determined, for example, from the frequency of the image data. This is because the monitor frame frequency (period required to draw the entire screen) is about 60 Hz to 120 Hz,
The frequency for drawing one pixel at each resolution is VGA
If it is around 25MHz, if it is SVGA 40MHz
It is because it is almost decided around. As a method of identifying the resolution, for example, a clock for drawing a pixel is converted into a voltage (a higher clock frequency at the time of conversion has a higher voltage value because energy is higher), and a voltage comparator is used. There is a method of judging the frequency.

The data conversion means 3 is based on the resolution identified by the resolution identification means 2 and based on the synchronization signal.
This is a circuit that converts image data into a form that can be easily processed.
More specifically, since the liquid crystal panel 7 of the present embodiment is designed according to the highest resolution panel that can be displayed, for example, a panel that performs UXGA (1600 × 1200) single scan display is used. , The frequency for driving each pixel is 160 MHz
Becomes Therefore, it is necessary to convert the input image data into a format of this frequency. As an example, as shown in FIG. 17, the image data is converted into the display frequency of the panel. At this time, since the frequency is higher on the panel side, a clock to which data is not assigned (a portion without a number in FIG. 17) occurs. However, if the position of this portion is determined in advance, it is effective in the subsequent data processing. No problem occurs because the position of the data can be determined.

The data conversion means 3 converts the image data into data of a frequency used for actual driving as described above.

The drive data generation unit 4 includes the data conversion unit 3
From the image data converted by the source driving means 5
And a circuit for generating a drive signal (drive data) for operating the gate drive means 6, and the generated signal is output to the source drive means 5 and the gate drive means 6, respectively. The drive data generation unit 4 operates the source drive unit 5 and the gate drive unit 6 so as to simultaneously drive a plurality of gate lines and display dots as described later, as described later. For this purpose, a control signal is generated.

The source driving means 5 includes a driving data generator 4
A data signal is generated on the basis of the signal from the LCD panel 7 and is supplied to a plurality of vertical source lines 8 (see FIG. 2) arranged on the liquid crystal panel 7. On the other hand, the gate driving unit 6 generates a scanning signal based on the signal from the driving data generating unit 4 and supplies the scanning signal to a plurality of horizontal lines, that is, gate lines 9 (see FIG. 2) disposed on the liquid crystal panel 7. Supply.

Referring to FIG. 2, in liquid crystal panel 7, a plurality of source lines 8 and a plurality of gate lines 9 are arranged so as to cross each other. In each region surrounded by two adjacent source lines 8 and two adjacent gate lines 9, dots 10 are provided, and the dots 10 are formed in a matrix on the entire liquid crystal panel 7. (See FIG. 3).

A dot 10 is a minimum unit of display, and as described later, each pixel 11 is constituted by a plurality of dots 10 (in FIG. 2, each pixel 11 is constituted by 3 × 3 = 9 dots 10). This is exemplified.) Also,
Each dot 10 corresponds to one of the RGB colors. In the present embodiment, since the liquid crystal panel 7 has a stripe arrangement, the dots 10 of the same color are arranged in the vertical direction A. In the horizontal direction B, R (red) G (green) B (blue)
Are repeatedly arranged in this order.

Further, in this embodiment, as shown in FIG. 2, each dot 10 is formed in a substantially square shape.
In other words, in each dot 10, the length of the side in the vertical direction A (hereinafter, appropriately referred to as “vertical direction” or simply “vertical”) and the length in the horizontal direction B (hereinafter, appropriately referred to as “horizontal direction” or simply “horizontal”) Are formed in a ratio of about 1: 1.

Here, as a comparison with the present embodiment shown in FIG. 2 and FIG. 3, a conventional configuration example is shown in FIG. 12 and FIG. As shown in FIG. 12, conventionally,
Normally, the dots 51 of each color of RGB are formed in a rectangular shape that is long in the vertical direction. And RG arranged in the horizontal direction
The shape of each pixel 52 constituted by three dots of B is
Usually, it is a square or a shape approximating a square,
The aspect ratio of each dot 51 is approximately 3: 1.
For this reason, as shown in FIG. 13, the entire liquid crystal panel 7 has a configuration in which dots 51 having an aspect ratio of about 3: 1 are arranged in a matrix.

On the other hand, in the present embodiment, as shown in FIG. 2, the dots 10 of each color of RGB are formed in a substantially square shape. In other words, each dot 10 of each color of RGB in the conventional configuration is formed. Dot 51 is divided into thirds. Accordingly, in the present embodiment, as shown in FIG. 3, the number of vertical dots 10 is tripled, in other words, the number of gate lines 9 which are horizontal lines is tripled. . On the other hand, the number of dots 10 in the horizontal direction is the same as that of the related art, and the number of source lines 8 that are vertical lines is also the same as that of the related art.

In the present embodiment, the display operation is performed by changing the size of each pixel 11 according to the resolution identified by the resolution identification means 2. Specifically, FIG.
As shown in FIG. 7, 3 × 3 = 9 dots in size,
The display operation is performed by changing the size of each pixel 11 in four steps of 4 × 4 = 16 dot size, 5 × 5 = 25 dot size, and 6 × 6 = 36 dot size. Do. 5 and 6 show three pixels 11 arranged in the horizontal direction, while FIGS. 4 and 7 show one pixel 11. In FIGS. 5 and 6,
The black solid dots 10 represent dots in a black display state (that is, a display state in which light is not transmitted (or reflected)). Therefore, also in the cases shown in FIGS. 5 and 6, regarding the number of the dots 10 other than the black display state, the number of the dots of each color of RGB in each pixel 11 is as follows.
They are equal to each other.

As described above, in the present embodiment, the display operation is performed by changing the size of each pixel 11 according to the identified resolution. Therefore, the source driving unit 5 and the gate driving unit 6 output signals to the liquid crystal panel 7 as follows according to the size of the pixel. That is, as described above, the source driving unit 5
A data signal is generated on the basis of the signal from, and this is supplied to the source line 8. When the pixel size is shown in FIGS. 5 and 6, the data signal is connected to each dot 10 to be in a black display state. A signal for displaying black is output to the source line 8.

On the other hand, the gate driving means 6 generates a scanning signal based on the signal from the driving data generating unit 4 and supplies the same to the gate line 9 as described above. , The number of gate lines 9 to be selectively driven at the same time is changed. For example, when each pixel 11 is composed of 3 × 3 = 9 dots, three gate lines 9 adjacent to each other are sequentially selected, and the same scanning is performed on the three gate lines 9 selected at the same time. Apply a signal. Similarly, when each pixel 11 is composed of 4 × 4 = 16 dots, four adjacent gate lines 9 are sequentially selected, and the same is applied to each of the four gate lines 9 selected at the same time. Apply a scanning signal.

The liquid crystal display device 1 of the present embodiment displays each image on the liquid crystal panel 7 without greatly changing the display area for image input signals of various resolutions by being configured as described above. It has a so-called multi-scan function. That is, the multi-scan is realized by increasing the number of dots forming one pixel with respect to the dots forming the pixel on the display screen, in other words,
This is achieved by changing the size of the pixel in every vertical and horizontal dot. Hereinafter, the display operation of the liquid crystal display device 1 will be described more specifically.

First, when image data is externally input to the liquid crystal display device 1, the image data is input to the resolution identification means 2 and the data conversion means 3. The resolution identifying means 2 determines the resolution of the image data based on the frequency of the image data input from the outside, and outputs the result of the determination to the data converting means 3.

The data conversion means 3 performs data conversion on the input image data for use in the liquid crystal display device 1 based on the resolution identified by the resolution identification means 2, and converts the image data thus converted. Is output to the drive data generator 4. More specifically, since the data having different resolutions have different formats such as the frequency of the data and the interval between the synchronization signal and the signal, necessary data is extracted from the image data, and the data is stored in the liquid crystal display device 1. Is converted into data of a frame frequency, a horizontal frequency, and a data clock frequency to be used.

The drive data generation section 4 generates a signal for controlling the source drive section 5 and the gate drive section 6 based on the image data from the data conversion section 3 and converts the control signal (drive data). These are supplied to the source driving means 5 and the gate driving means 6, respectively.

Here, an example of applied data output to each vertical line from the source driving means 5 based on a control signal sent from the driving data generating unit 4 to the source driving means 5 is as follows.
This is shown in FIGS. FIG. 8 is an example of application data when the size of each pixel 11 is 3 × 3 = 9 dots according to the identified resolution. FIG. 9 shows that the size of each pixel 11 is 4 × 4 = 16 according to the identified resolution.
It is an example of the application data when it is set as a dot. 8 and 9 show the data of each color applied in order from the data of the first vertical line for the data of each color of RGB.

FIG. 12 and FIG.
Compared with the conventional configuration shown in FIG. 3, when the size of each pixel 11 is 3 × 3, RGB is similar to the conventional configuration.
Data of each line is continuously transmitted as data of each color. On the other hand, when the size of each pixel 11 is 4 × 4, as shown in FIG. 9, the data of each color of RGB is processed, and a signal BL for displaying the applied dot in black is partially added. It is sent to the source driving means 5. The same data conversion is performed when the size of each pixel 11 is 5 × 5.

On the other hand, based on a control signal sent from the drive data generator 4 to the gate driver 6, the source driver 5
An example of a scanning signal output to each gate line 9 from
This is shown in FIGS. FIG. 10 is an example of a scanning signal when the size of each pixel 11 is 3 × 3 = 9 dots according to the identified resolution. Also, FIG.
The size of each pixel 11 is 4 × 4 according to the identified resolution.
This is an example of a scanning signal when = 16 dots.

FIG. 14 shows a conventional configuration of the scanning signal for comparison. As shown in the figure, conventionally, the gate driving means sequentially selects each gate line,
A drive pulse is supplied. On the other hand, in the gate driving means 6 of the present embodiment, the number of the gate lines 9 that are simultaneously selected and driven is plural. For example, when the size of each pixel 11 is 3 × 3, Are simultaneously selected and driven three by three, and when the size of each pixel 11 is 4 × 4, four gate lines 9 are simultaneously selected and driven.

In this embodiment, as described above, 3 ×
Although the size of each pixel is changed from 3 dots to 6 × 6 dots, the present invention is not limited to this. For example, the size of each pixel may be changed in three stages from 3 × 3 dots to 5 × 5 dots, or the pixel size may be changed to 7 × 7 dots or more (for example, 8 × 8 dots). The configuration may be changed. However, the number of RGB dots (the number of dots other than black display) constituting the pixel is set equal to each other in order to perform white display.

In the present embodiment, a plurality of gate lines 9 are simultaneously selected and driven as described above.
However, the present invention is not limited to this.
The processing may be sequentially performed by dividing the time for each line. However,
It should be noted that, because the number of gate lines 9 is large, the time for which a voltage can be applied to the liquid crystal element is shortened if the time is divided. For this reason, a configuration in which a plurality of gate lines 9 are simultaneously selected and driven is more preferable.

Here, a specific example will be described in which the liquid crystal display device 1 of the present embodiment displays an image without greatly changing the display area in response to input of image data of different resolutions.

The number of dots forming the display screen of the liquid crystal panel 7 is 3200 × 2400. At this time, X
In the GA mode (1024 × 768), the pixel size is set to 3072 × 2304 as a 3 × 3 dot matrix.
Use the display area of. Thus, an image can be displayed using a display area of about 92% of the entire display screen. In the SVGA mode (800 × 600), a pixel size of 3200 × 2 is set as a matrix of 4 × 4 dots.
400 display areas are used. In this case, an image can be displayed using the entire area of the display screen. Also,
Even in the VGA mode (640 × 480), the pixel size is set to 3200 × 2400 as a matrix of 5 × 5 dots.
If the display area is used, an image can be displayed using the entire area of the display screen.

As described above, only by increasing the horizontal resolution by about 4% from the XGA mode, the XGA, SVGA, VGA
For each mode of, without greatly changing the display area,
Image display can be performed.

Next, another specific example will be described. In this example, the number of dots forming the display screen on the liquid crystal panel 7 is 5120 × 4096. At this time, UXG
In the A mode (1600 × 1200), the pixel size is 4800 × 3600 as a 3 × 3 dot matrix.
Use the display area of. As a result, an image can be displayed using about 82% of the display area of the entire display screen. In the SXGA mode (1280 × 1024), the pixel size is set to a matrix of 4 × 4 dots, and
A display area of × 4096 is used. In this case, an image can be displayed using the entire area of the display screen.

As described above, only by increasing the horizontal resolution by about 6% from the UXGA mode, an image can be displayed in the UXGA and SXGA modes without greatly changing the display area.

The SXGA has an aspect ratio of 5: 4, whereas the UXGA has an aspect ratio of 4: 3. For this reason, in the UXGA, a non-display area of about 6% is generated due to the difference in aspect ratio, so that the display area is narrow. XGA, SV above
GA and VGA also have an aspect ratio of 4 to 3, as in UXGA. In the case of displaying these modes in the same longitudinal direction, the pixel size is 5 × 5, 6 respectively.
A matrix of × 6, 8 × 8 dots is used. This allows
The display area of each mode is 5120 × 3840,
4800 × 3600, 5120 × 3840, and a full-width display can be obtained.

As described above, in this embodiment, each pixel 1
Considering the case where 1 is composed of a minimum of 9 dots, the size of the pixel 11 can be changed in the vertical direction and the horizontal direction in steps of 1/3, so that the pixel size is adjusted in small steps. it can. This also gives
For image input signals of various resolutions, the display resolution can be changed without greatly changing the display area.

Further, it is not necessary to increase the number of horizontal dots 10 in the liquid crystal panel 7 as compared with the conventional case, and the display size for various resolutions can be made more uniform.

[Embodiment 2] The following will describe another embodiment of the present invention with reference to FIG.
For convenience of description, the same members as those described in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

This embodiment differs from the first embodiment in that pixels 21 having different numbers of dots in the vertical and horizontal directions are used, as shown in FIG. Other configurations are the same as those of the first embodiment, and this embodiment also has the same configuration as the configuration shown in FIG.

The pixels shown in FIG. 15 are constituted by a matrix of 4 × 3 = 12 dots. As described above, by using rectangular pixels 21 other than squares having different numbers of dots in the vertical and horizontal directions, when changing the pixel size, the vertical and horizontal directions are independently scaled, and the display resolution is increased. Can be changed. As a result, it is possible to utilize the display area effectively instead of adjusting the image or allowing the image to be distorted.

Here, a specific example in which an image is displayed according to the present embodiment without greatly changing the display area in response to input of image data having different resolutions will be described.

The number of dots constituting the display screen of the liquid crystal panel 7 is 5120 × 4800. At this time, U
In the XGA mode (1600 × 1200), a pixel size of 4800 × 48 is set as a matrix of 3 × 4 dots.
Use the 00 display area. Thus, an image can be displayed using a display area of about 94% of the entire display screen.

In the SXGA mode (1280 × 1024), the pixel size is defined as a 4 × 4 dot matrix.
A display area of 5120 × 4096 is used. As a result, an image can be displayed using about 85% of the display area of the entire display screen.

In the XGA mode (1024 × 768),
Assuming that the pixel size is a matrix of 5 × 6 dots, 51
A display area of 20 × 4608 is used. As a result, an image can be displayed using about 96% of the display area of the entire display screen.

In the SVGA mode (800 × 600),
Assuming a pixel size of 6 × 8 dot matrix, 48
A display area of 00 × 4800 is used. Thus, an image can be displayed using a display area of about 94% of the entire display screen.

In the VGA mode (640 × 480), the pixel size is set as a matrix of 8 × 10 dots,
A display area of 20 × 4800 is used. Thus, an image can be displayed using a 100% display area of the entire display screen.

As described above, in this embodiment, the display area can be effectively used by using the pixels 21 having different numbers of dots in the vertical and horizontal directions. Specifically, in the example of the first embodiment, the average of the display area with respect to the entire display screen is 90% for the above five modes (resolutions), whereas in the example of the present embodiment, the average is 90%. A wider area with an average of 94% can be utilized.

Embodiment 3 The following will describe still another embodiment of the present invention with reference to FIG. For convenience of description, the same members as those described in the above embodiment are denoted by the same reference numerals,
The description is omitted.

In the present embodiment, as shown in FIG. 16, when a dot of a color in which the number of dots is n (where n is an integer of 1 or more) greater than that of the other color is present in the pixel 31, The present embodiment differs from the first embodiment in that the n dots also contribute to the display of the color. Other configurations are the same as those of the first embodiment, and this embodiment also has the same configuration as the configuration shown in FIG.

FIG. 16 shows a state where the size of the pixel 31 is 4 × 4 dots. In this case, each pixel 31
In the example, the number of dots of any one of the RGB dots is three times larger than that of the other two colors. In the first embodiment, the extra three dots are used for black display, and the number of RGB dots (the number of dots other than black display) constituting each pixel is made equal to each other.

In the present embodiment, as shown in FIG. 16, the above three dots are not displayed in black but contribute to the display of the color. For this reason, in the present embodiment, the brightness is adjusted for dots of a color that is larger in number than the dots of the other two colors. For example, while there are R dots in two rows and six dots, other G dots
In the pixel 31 in which B dots are three dots in one row and R has twice the number of dots as G and B, the luminance of R in each column is adjusted to の of the original R luminance.

As described above, by adjusting the luminance,
It is possible to contribute to the display of the color without making the extra dot a black display. As a result, the entirety of the pixels 31 can contribute to the display, and there is no interruption between the pixels 31 (in other words, the connection between the adjacent pixels 31 can be made smooth), and the continuity of the screen can be expressed.

[0073]

As described above, the display device of the present invention has a 3
A display panel in which color dots are arranged in stripes in the vertical direction, the aspect ratio of each of the dots is formed substantially in a one-to-one manner, and each pixel has at least three columns and three rows.
A display device comprising a total of nine or more dots in a column, wherein a data signal and a scanning signal supplied to the display panel are changed according to the resolution of input image data, and The image is displayed by changing the size in the vertical direction and / or the horizontal direction in units of one dot.

[0086] With this arrangement, the pixel size can be changed in the vertical and horizontal directions in steps of 1/3 on the basis of the case where each pixel is composed of a minimum of 9 dots. You can adjust the size in small steps. In addition, this makes it possible to change the display resolution without greatly changing the display area for image input signals of various resolutions.

Further, it is not necessary to increase the number of dots in the horizontal direction on the display panel as compared with the related art, and the display size for various resolutions can be made more uniform.

[Brief description of the drawings]

FIG. 1 is a simplified block diagram showing a configuration of a liquid crystal display device according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration example of a pixel in the embodiment.

FIG. 3 is a diagram showing an arrangement state of dots in the embodiment.

FIG. 4 is a diagram showing a case where each pixel has a size of 3 × 3 in the embodiment.
It is a figure showing the case of a dot.

FIGS. 5A to 5C are diagrams illustrating a case where the size of each pixel is 4 × 4 dots for three adjacent pixels in the embodiment.

FIGS. 6A to 6C are diagrams illustrating a case where the size of each pixel is 5 × 5 dots for three adjacent pixels in the embodiment.

FIG. 7 is a view showing a case where each pixel has a size of 6 × 6 in the embodiment.
It is a figure showing the case of a dot.

FIG. 8 is a diagram showing a case where each pixel has a size of 3 × 3 in the embodiment.
FIG. 4 is a diagram illustrating application of a data signal in the case of a dot.

FIG. 9 shows a case where the size of each pixel is 4 × 4 in the embodiment.
FIG. 4 is a diagram illustrating application of a data signal in the case of a dot.

FIG. 10 shows a case where each pixel has a size of 3 × in the embodiment.
FIG. 7 is a diagram illustrating application of a scanning signal in the case of three dots.

FIG. 11 shows a case where the size of each pixel is 4 × in the above embodiment.
FIG. 7 is a diagram illustrating application of a scanning signal in the case of four dots.

FIG. 12 is a diagram illustrating a configuration example of a pixel in a conventional liquid crystal display device.

FIG. 13 is a diagram showing an arrangement state of dots in a conventional liquid crystal display device.

FIG. 14 is a diagram illustrating application of a scanning signal in a conventional liquid crystal display device.

FIG. 15 is a diagram illustrating a configuration example of a pixel in a liquid crystal display device according to another embodiment of the present invention.

FIGS. 16A to 16C are diagrams illustrating display examples of adjacent pixels in a liquid crystal display device according to still another embodiment of the present invention.

FIG. 17 is a diagram illustrating an example of a case where input image data is converted into a display frequency of a panel.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 liquid crystal display device 2 resolution identification means 3 data conversion means 4 drive data generation unit 5 source drive means (drive means) 6 gate drive means 7 liquid crystal panel (display panel) 8 source line 9 gate line 10 dots 11.21.31 pixels

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09G 3/20 650 G09G 3/20 650B 650C H04N 9/12 H04N 9/12 B 9/30 9/30 F Terms (reference) 2H093 NA16 NA64 NC13 NC49 NC52 ND54 ND60 NH06 5C006 AA16 AA22 AF42 AF43 AF47 AF53 BB16 BC06 FA04 FA51 5C060 BA04 BA09 BB01 BC01 DA02 DB11 JA00 5C080 AA10 BB05 CC03 DD27 EE26 FF11 GG02 JJ01 JJ01 JJ02

Claims (6)

[Claims] 1. A display panel in which dots of three colors are arranged in stripes in a vertical direction, wherein the aspect ratio of each of the dots is substantially one to one, and each pixel has at least a vertical length. A display device comprising a total of nine or more dots in three rows and three columns, wherein a data signal and a scanning signal supplied to the display panel are changed according to a resolution of input image data, A display device, wherein the image display is performed by changing the size of each pixel in the vertical direction and / or the horizontal direction in units of one dot. 2. A resolution identifying means for identifying a resolution of input image data, a data converting means for converting at least a part of the input image data according to the resolution identified by the resolution identifying means, A driving data generating unit that generates driving data based on the data converted by the data converting unit; and a data signal and a scanning signal are generated based on the driving data generated by the driving data generating unit, and each signal is displayed. The display device according to claim 1, further comprising: a driving unit that supplies the panel. 3. The display device according to claim 1, wherein the number of vertical dots and the number of horizontal dots in each pixel are the same. 4. The display device according to claim 1, wherein the number of dots in the vertical direction and the number of dots in the horizontal direction are different for each pixel. 5. When a pixel has a color dot whose number is n (n is an integer of 1 or more) greater than that of another color dot, the n dots are set to a black display state. The display device according to claim 1, wherein: 6. When a pixel has a color dot whose color number is n (where n is an integer of 1 or more) larger than that of another color dot, the display of that color is also performed for the n dots. The display device according to claim 1, wherein the display device contributes to: