KR102211994B1 - Organic Light Emitting Display Device and Driving Method Thereof - Google Patents

Abstract

The present invention relates to an organic light emitting display device capable of improving image quality.
An organic light emitting display device of the present invention comprises: a pixel portion including sub-pixels; A scan driver for driving scan lines connected to the sub-pixels in a line unit; A data driver for driving data lines positioned in a direction crossing the scan lines; A data processing unit that generates second data by using the first data supplied from the outside; The data processing unit generates the second data by changing a gray level of the first data supplied to subpixels positioned at the edge of the pixel unit.

Description

Organic Light Emitting Display Device and Driving Method Thereof}

Embodiments of the present invention relate to an organic light emitting display device and a driving method thereof, and more particularly, to an organic light emitting display device capable of improving image quality and a driving method thereof.

An organic light emitting display device displays an image using an organic light emitting diode, which is a self-luminous device, and is attracting attention as a next-generation display device because of its excellent brightness and color purity.

Such an organic light emitting display device configures a plurality of pixels by using red sub-pixels, green sub-pixels, and blue sub-pixels, and displays various color images through this.

Red sub-pixels, green sub-pixels, and blue sub-pixels may be arranged in various forms, and are generally arranged in a stripe shape. The stripe type is a type in which subpixels of the same color are arranged in column units.

However, when the subpixels are arranged in a stripe shape, there is a problem in that the aperture ratio is lowered due to the black matrix positioned between the subpixels and the expressive ability of high resolution is lowered.

To overcome this problem, "ClairVoyante Laboratories" proposed a pixel arrangement structure called "The Pentile Matrix color pixel arrangement". In the pentile matrix pixel arrangement structure, red subpixels and blue subpixels are alternately formed in the same column, and green subpixels are formed in adjacent columns. The pentile matrix pixel arrangement structure has an advantage of reducing the number of sub-pixels to approximately 2/3 compared to the stripe type, thereby securing a high-enhancing ratio. In addition, when the pentile matrix pixel arrangement structure is applied, the high resolution expression ability is improved, and the image quality can be improved by a structure in which vertical line patterns by specific pixels are not recognized.

However, in the case of the conventional pentile matrix structure, there is a problem in that green and red are recognized as lines (greenish, pinkish) at the edges.

Accordingly, an object of an embodiment of the present invention is to provide an organic light emitting display device capable of improving image quality and a driving method thereof.

An organic light emitting display device according to an embodiment of the present invention includes a pixel portion including subpixels; A scan driver for driving scan lines connected to the sub-pixels in a line unit; A data driver for driving data lines positioned in a direction crossing the scan lines; A data processing unit that generates second data by using the first data supplied from the outside; The data processing unit generates the second data by changing a gray level of the first data supplied to subpixels positioned at the edge of the pixel unit.

Preferably, the data processing unit includes a dimming unit for generating the second data. The dimming unit generates the second data by changing the gray level of the first data to decrease. The dimming unit generates the second data by changing the first data supplied to the subpixels located at the outermost edge of the fourth side of the pixel unit. Pixel regions are provided in the pixel portion, and any one of blue and red sub-pixels and a green sub-pixel are arranged in a diagonal direction in each of the pixel regions. The red and blue subpixels are repeatedly arranged in a specific column, and the green subpixels are repeatedly arranged in a column adjacent to a specific column.

A method of driving an organic light emitting display device according to an embodiment of the present invention includes the steps of detecting a pattern of data corresponding to the position of the panel, and supplying the subpixels located at the edge of the panel in response to the pattern of the data. And generating second data by changing a gray level of the first data to be used.

Preferably, pixel regions are provided in the panel, and one of blue and red subpixels and a green subpixel are disposed in each of the pixel regions in a diagonal direction. The red and blue subpixels are repeatedly disposed in a specific row of the panel, and the green subpixels are repeatedly disposed in a row adjacent to the specific row. A blue sub-pixel, a red sub-pixel, and two green sub-pixels arranged in two pixel regions adjacent to each other constitute a pixel. The second data is generated by lowering a gray level from the first data.

The generating of the second data includes determining whether the first data is supplied to a first line, a last line, or another line; Generating the second data by changing a gray level of the first data supplied to all subpixels located on the first line when the first line corresponds to the first line; Generating the second data by changing the gray level of the first data supplied to all subpixels located on the last line when the line corresponds to the last line; And generating the second data by changing a gray level of the first data supplied to the first subpixel and the last subpixel, if corresponding to the other lines.

The generating of the second data corresponding to the first line includes the first data supplied to the outermost subpixels among the subpixels included in the first pixel and the last pixel corresponding to the data pattern. Generating the second data by changing a gray level; And generating the second data by changing a gray level of the first data supplied to the outermost subpixels among subpixels not included in the first pixel and the last pixel.

The step of generating the second data corresponding to the last line includes a gray level of the first data supplied to the outermost sub-pixels among the sub-pixels included in the first pixel and the last pixel corresponding to the data pattern. Generating the second data by changing the data; And generating the second data by changing a gray level of the first data supplied to the outermost sub-pixels among sub-pixels not included in the first pixel and the last pixel.

The generating of the second data in response to the other lines includes determining whether it is a first sub-pixel or a last sub-pixel, and when it is determined as the first sub-pixel, corresponding first data Generating second data by changing a gray level of, and generating second data by changing a gray level of the corresponding first data in response to a pattern of the data when it is determined as the last sub-pixel. And determining whether the first subpixel and the last subpixel are located on an odd or even numbered line.

According to the organic light emitting display device and a driving method thereof according to the present invention, the luminance of sub-pixels located at the outermost edges can be lowered, and thus green and red colors can be prevented from being recognized as a line.

1 is a diagram illustrating a pixel arrangement structure of an organic light emitting display device according to an exemplary embodiment of the present invention.
2A to 2D are diagrams illustrating patterns of data corresponding to positions of panels.
3A to 3D are diagrams illustrating that a specific color is recognized in a line shape corresponding to the position of the panel.
4 is a diagram illustrating an organic light emitting display device according to an exemplary embodiment of the present invention.
5 is a diagram showing an embodiment of a data processing unit according to an embodiment of the present invention.
6 is a flowchart showing an operation process of a dimming unit according to an embodiment of the present invention.

Hereinafter, a detailed description will be given with reference to FIGS. 1 to 6 to which a preferred embodiment capable of easily carrying out the present invention by a person of ordinary skill in the art to which the present invention pertains.

1 is a diagram illustrating a pixel arrangement structure of an organic light emitting display device according to an exemplary embodiment of the present invention.

Referring to FIG. 1, in an organic light emitting display device according to an embodiment of the present invention, red (R) and blue (B) sub-pixels are repeatedly arranged in a specific column, and green (G) sub-pixels are repeatedly arranged adjacent to a specific column. Is placed as. That is, in the present invention, the subpixels R, G, and B are arranged in the form of a pen tile.

Red (R) and green (G) sub-pixels or blue (B) and green (G) sub-pixels are disposed in each of the pixel regions 100. In the pixel region 100, the red (R) and green (G) sub-pixels are located diagonally to each other. In this case, a wide spacing between the red (R) and green (G) sub-pixels can be set, and accordingly, there is an advantage applicable to a high-resolution panel. Likewise, blue (B) and green (G) sub-pixels in the pixel region 100 are also located in the diagonal direction. Meanwhile, in the organic light emitting display device of the present invention, the sub-pixels R, G, B, and G positioned in the two pixel regions 100 adjacent to each other constitute one pixel and are driven.

In addition, in the pixel arrangement structure of the present invention, the green (G) sub-pixel may be formed to have a smaller area than the red and blue sub-pixels R and B in consideration of luminous efficiency. In addition, the blue (B) sub-pixel may be formed to have a larger area than the red (R) sub-pixel in response to luminous efficiency. The areas of the sub-pixels R, G, and B can be changed in various forms in consideration of luminous efficiency.

On the other hand, when the panel having the pixel arrangement structure of the present invention is used in a portable device, data is changed and supplied according to the position of the panel.

For example, as shown in FIG. 2A, when the panel is driven in a normal position, data is supplied in the first pattern (R, G, B, G,...). In addition, when the panel is rotated 90 degrees to the left, data is supplied in the second pattern (G, B, G, R,...) as shown in FIG. 2B. In addition, when the panel is rotated 90 degrees to the right, data is supplied in the third pattern (B, G, R, G,...) as shown in FIG. 2C. In addition, when the panel is inverted vertically, data is supplied in the fourth pattern (G, R, G, B,...) as shown in FIG. 2D.

However, in the case of the present invention in which subpixels are arranged in the form of a pen tile, there is a problem in that a specific color is recognized at the edge.

In fact, when data is input in the first pattern, as shown in FIG. 3A, there is a problem in that pinklish is strongly displayed on the upper and left sides, and greenlish is strongly displayed on the lower and right sides. Likewise, even when data is supplied in the second pattern to the fourth pattern as shown in FIGS. 3B to 3D, there is a problem in that pink and green colors appear strong at the edges.

In the present invention, in order to overcome such a problem, the data supplied to the subpixels R, G, and B located at the four-side edge of the panel are dimmed. Here, the dimming process refers to lowering the gradation of data supplied to the four-side edges to prevent strong observation of a specific color in the form of vertical and horizontal lines.

4 is a diagram illustrating an organic light emitting display device according to an exemplary embodiment of the present invention.

Referring to FIG. 4, in an organic light emitting display device according to an embodiment of the present invention, a scan driver 10 for driving scan lines S1 to Sn and a data driver for driving data lines D1 to Dm (20), a timing control unit 50 for controlling the scan driver 10 and the data driver 20, and the first data (data1) supplied from the outside are dimmed to generate second data (data2) A data processing unit 30 is provided.

The sub-pixels R, G, and B of the present invention are disposed in the pixel portion 40 where the scan lines S1 to Sn and the data lines D1 to Dm cross each other in a structure as shown in FIG. 1.

The scan driver 10 supplies a scan signal to the scan lines S1 to Sn. Here, the scan driver 10 may supply a scan signal in a forward direction or a reverse direction corresponding to the position of the panel.

The data driver 20 generates a data signal using the second data data, and supplies the data signal to the data lines D1 to Dm so as to synchronize the generated data signal with the scan signal. Then, the data signal is supplied to the subpixels R, G, and B selected by the scan signal.

The timing controller 50 supplies a control signal (not shown) for controlling the scan driver 10 and the data driver 20. In addition, the timing control unit 50 transfers the second data data2 supplied from the data processing unit 30 to the data driving unit 20.

The data processing unit 30 detects a pattern of data (a first pattern to a fourth pattern), and generates second data data2 by dimming the first data data1 corresponding to the detected pattern. Actually, the data processing unit 30 generates second data data2 by lowering the gray level of the first data data1 to be supplied to the outermost subpixels of the panel so that a specific color is not observed at the edge of the panel. A detailed operation process will be described later.

5 is a diagram showing an embodiment of a data processing unit according to an embodiment of the present invention.

Referring to FIG. 5, a data processing unit 30 according to an embodiment of the present invention includes an SPR unit 32 and a dimming unit 34.

The SPR (sub pixel rendering) unit 32 refers to an algorithm for improving the readability of characters. Such an SPR unit 32 is connected with a pentile, and any one of various types of algorithms currently known may be applied. Additionally, in the present invention, the SPR unit 32 may be omitted.

The dimming unit 34 generates second data data2 by controlling the gray level of the first data data1 to be supplied to the subpixels located at the outermost edge of the panel in response to the data pattern.

6 is a flowchart showing an operation process of a dimming unit according to an embodiment of the present invention.

Referring to FIG. 6, the dimming unit 34 checks whether the first data data1 input to itself is data of the first line or the last line. In fact, as shown in FIGS. 3A to 3D, the first data data 1 supplied to the first line and the last line should be generated as second data data2 by dimming in line units.

Further, the dimming unit 34 generates second data data2 by dimming the first data data1 to be supplied to the first and last subpixels located on the remaining lines except for the first and last lines. That is, the dimming unit 34 generates the second data data2 by lowering the gray level of the first data data1 to be supplied to the subpixels R, G, and B positioned at the edge of the panel, 2 The data (data2) is supplied to the timing control unit 50.

To describe the operation process in detail, first, the dimming unit 34 determines whether the first data data1 input from the outside is data to be supplied to the first line (S200). In step S200, the first data data1 If it is determined that the data to be supplied to the first line is determined, the data pattern is checked. (S202) Here, the data pattern is a first pattern, a second pattern, a third pattern, and a fourth pattern as shown in FIGS. 3A to 3D. It is divided into.

If the data is determined to be the first pattern in step S202, it is determined whether the first data data1 is supplied to the first pixel (S204).

If it is determined in step S204 that the first data (data1) is supplied to the first pixel, it is determined whether the data is the second pattern or the fourth pattern. (S206) Here, the data is red because it is determined as the first pattern in step S202. The first data (data1) to be supplied to the sub-pixel (R) and the blue sub-pixel (B) is dimmed to generate second data (data2). (S214) (R, located at the upper/left of FIG. 3A, B dimming)

In step S204, if the first data (data1) does not correspond to the first pixel, it is determined whether it is input as the last pixel. (S210) If it is determined that the first data (data1) is supplied to the last pixel in step S210, the data is It is determined whether it is the first pattern or the third pattern. (S212) Here, since the data is determined as the first pattern in step S202, it corresponds to the red sub-pixel (R), the blue sub-pixel (B), and the green sub-pixel (G2). One first data (data1) is dimmed. (R, B, G dimming processing located on the upper/right side of Fig. 3A) Here, the green subpixel indicated by G2 is the same pixel as the blue subpixel (B). It means that it is located in the area 100. In addition, for convenience of description, the green subpixel located in the same pixel region 100 as the red subpixel R will be denoted as G1. On the other hand, when it is not determined as the last pixel in step S210, that is, in the case of pixels positioned between the first and last pixels, the dimming process is performed corresponding to the red sub-pixel R and the blue sub-pixel B (S214). As described above, when data of the first pattern is input, the first data (data1) corresponding to the subpixels located at the upper edge is dimmed through steps S202 to S214, so that the second data (data2) is Is created.

If the data is determined to be the second pattern in step S202, it is determined whether the first data data1 is supplied to the first pixel (S204).

If it is determined in step S204 that the first data (data1) is supplied to the first pixel, it is determined whether the data is the second pattern or the fourth pattern. (S206) Here, since the data is determined as the second pattern in step S202, the first The second data data2 is generated by dimming the first data data1 to be supplied to the red subpixel R, the blue subpixel B, and the green subpixel G2 included in the second pixel (S208). ) (R, B, G dimming treatment located on the upper/left side of Fig. 3B)

In step S204, if the first data (data1) does not correspond to the first pixel, it is determined whether it is input as the last pixel. (S210) If it is determined that the first data (data1) is supplied to the last pixel in step S210, the data is It is determined whether it is a first pattern or a third pattern. (S212) Here, since the data is determined as the second pattern in step S202, the first data data1 corresponding to the red sub-pixel R and the blue sub-pixel B (S214) (R, B dimming processing located on the upper/right side of FIG. 3B) On the other hand, when it is not determined as the last pixel in step S210, that is, the pixels located between the first pixel and the last pixel are In this case, the dimming process is performed corresponding to the red sub-pixel R and the blue sub-pixel B. (S214) As described above, when data of the second pattern is input, it is positioned at the upper edge while passing through steps S202 to S214. The first data data1 corresponding to the subpixels is dimmed to generate second data data2.

When the data is determined to be the third pattern in step S202, it is determined whether the first data data1 is supplied to the first pixel (S304).

If it is determined in step S304 that the first data (data1) is supplied to the first pixel, it is determined whether the data is the first pattern or the third pattern. (S306) Here, since the data is determined as the third pattern in step S202, the first The green subpixels G1 and G2 included in the th pixel and the first data data1 to be supplied to the blue subpixel B are dimmed to generate second data data2 (S308) (Fig. 3C). B, G, G dimming on the top/left side of

In step S304, if the first data (data1) does not correspond to the first pixel, it is determined whether the first data (data1) is input to the last pixel. (S310) If it is determined that the first data (data1) is supplied to the last pixel in step S310, the data is It is determined whether it is a second pattern or a fourth pattern. (S312) Here, since the data is determined to be the third pattern in step S202, the first data data1 corresponding to the green subpixels G1 and G2 is dimmed. .(S314) (G, G dimming processing located on the upper/right side of FIG. 3C) On the other hand, when it is not determined as the last pixel in step S310, i.e., pixels located between the first and last pixels are subdivided into green (S314) As described above, when the data of the third pattern is input, the subpixels located at the upper edge are passed through steps S202, S304 to S314. The corresponding first data data1 is dimmed to generate second data data2.

When the data is determined to be the fourth pattern in step S202, it is determined whether the first data data1 is supplied to the first pixel (S304).

If it is determined in step S304 that the first data (data1) is supplied to the first pixel, it is determined whether the data is a first pattern or a third pattern (S306) Here, since the data is determined as the fourth pattern in step S202, the first The second data data2 is generated by dimming the first data data1 to be supplied to the green subpixels G1 and G2 included in the pixel (S314) (G located at the top/left of FIG. 3D). , G dimming)

In step S304, if the first data (data1) does not correspond to the first pixel, it is determined whether the first data (data1) is input to the last pixel. (S310) If it is determined that the first data (data1) is supplied to the last pixel in step S310, the data is It is determined whether it is a second pattern or a fourth pattern. (S312) Here, since the data is determined as the fourth pattern in step S202, the green subpixels G1 and G2 and the blue subpixel B are included. The first data (data1) to be supplied is dimmed to generate second data (data2). (S308) (G, G, B dimming processing located on the upper/right side of Fig. 3D) Meanwhile, the last pixel in step S310 If it is not determined to be, that is, in the case of pixels positioned between the first pixel and the last pixel, the dimming process is performed corresponding to the green sub-pixels G1 and G2 (S314) As described above, data of the fourth pattern is processed. When inputted, first data data1 corresponding to subpixels positioned at the upper edge is dimmed through steps S202, S304 to S314 to generate second data data2.

On the other hand, if the data to be supplied to the first line is not determined in step S200, it is determined whether the data to be supplied to the last line is determined (S300). In step S300, the first data (data1) is determined as data to be supplied to the last line. If so, the data pattern is checked (S302).

When the data is determined as the first pattern in step S302, it is determined whether the first data data1 is supplied to the first pixel or the last pixel. (S304, S310) In step S304, the first data data1 is the first pixel. When it is determined that the data is supplied to the first pixel, it is determined whether the first data (data1) is the first pattern or the third pattern. (S306) Here, since the data is determined as the first pattern in step S302, the green sub included in the first pixel The second data data2 is generated by dimming the first data data1 to be supplied to the pixels G1 and G2 and the blue subpixel B (S308) (located at the lower/left of FIG. 3A). B, G, G dimming)

When it is determined in step S310 that the first data (data1) is supplied to the last pixel, it is determined whether the first data (data1) is the second pattern or the fourth pattern. (S312) Here, the data is the first pattern in step S302. Since it is determined that the second data data2 is generated by dimming the first data data1 to be supplied to the green subpixels G1 and G2 included in the last pixel (S314) (bottom/in FIG. 3A) On the other hand, if it is not determined as the last pixel in step S310, that is, the pixels located between the first and last pixels are dimmed corresponding to the green subpixels G1 and G2. (S314) As described above, when data of the first pattern is input, the first data data1 corresponding to the subpixels located at the lower edge is dimmed through steps S302 to S314. 2Data (data2) is created.

If the data is determined as the second pattern in step S302, it is determined whether the first data data1 is supplied to the first pixel or the last pixel. (S304, S310) In step S304, the first data data1 is the first pixel. When it is determined that the data is supplied to the first pixel, it is determined whether the first data (data1) is the first pattern or the third pattern. (S306) Here, since the data is determined to be the second pattern in step S302, the green sub included in the first pixel The first data data1 to be supplied to the pixels G1 and G2 is dimmed to generate second data data2 (S314) (G and G dimming processing located at the lower/left of FIG. 3B).

When it is determined in step S310 that the first data (data1) is supplied to the last pixel, it is determined whether the first data (data1) is a second pattern or a fourth pattern. (S312) Here, the data is the second pattern in step S302. Since it is determined that the second data data2 is generated by dimming the first data data1 to be supplied to the green subpixels G1 and G2 and the blue subpixel B included in the last pixel (S308). ) (G, G, B dimming processing located on the lower/right side of FIG. 3B) On the other hand, when it is not determined as the last pixel in step S310, that is, in the case of pixels located between the first and last pixels, green subpixels Dimming is performed in response to (G1, G2). (S314) As described above, when the data of the second pattern is input, the first step corresponding to the subpixels located at the lower edge through steps S302 to S314 is The data data1 is dimmed to generate second data data2.

If the data is determined to be the third pattern in step S302, it is determined whether the first data (data1) is supplied to the first pixel or the last pixel. (S204, S210) In step S204, the first data (data1) is the first pixel. When it is determined that the data is supplied as a second pattern or a fourth pattern (S206), since the data is determined as the third pattern in step S302, the red sub included in the first pixel The first data data 1 to be supplied to the pixel R and the blue sub-pixel B is dimmed to generate the second data data 2 (S214) (R, B located at the lower/left of FIG. 3C). Dimming)

When it is determined in step S210 that the first data (data1) is supplied to the last pixel, it is determined whether the first data (data1) is a first pattern or a third pattern. (S212) Here, the data is a third pattern in step S302. As it is determined as, the first data (data1) to be supplied to the red sub-pixel (R), blue sub-pixel (B), and green sub-pixel (G2) included in the last pixel is dimmed to generate second data (data2). (S208) (R, B, and G dimming processing located on the lower/right side of FIG. 3C) On the other hand, when it is not determined as the last pixel in step S210, that is, in the case of pixels located between the first and last pixels The dimming process is performed corresponding to the red sub-pixel (R) and the blue sub-pixel (B). (S214) As described above, when data of the third pattern is input, the lower edge is processed through steps S302, S204 to S214. The first data data1 corresponding to the subpixels located at is dimmed to generate second data data2.

When the data is determined to be the fourth pattern in step S302, it is determined whether the first data data1 is supplied to the first pixel or the last pixel. (S204, S210) In step S204, the first data data1 is the first pixel. When it is determined that the first data is supplied as a second pattern or a fourth pattern (S206), since the data is determined as a fourth pattern in step S302, the red sub included in the first pixel The second data data2 is generated by dimming the first data data1 to be supplied to the pixel R, the blue subpixel B, and the green subpixel G2. (S208) (lower side of FIG. 3D/ G, B, R dimming on the left)

When it is determined in step S210 that the first data (data1) is supplied to the last pixel, it is determined whether the first data (data1) is a first pattern or a third pattern. (S212) Here, the data is a fourth pattern in step S302. Since it is determined that the second data data2 is generated by dimming the first data data1 to be supplied to the red subpixel R and the blue subpixel B included in the last pixel (S214) (Fig. On the other hand, if it is not determined as the last pixel in step S210, that is, pixels positioned between the first pixel and the last pixel, the red sub-pixel R and the blue sub-pixel The dimming process is performed corresponding to the pixel B. (S214) As described above, when the data of the fourth pattern is input, steps S302, S204 to S214 are performed to correspond to the subpixels located at the lower edge. The first data data1 is dimmed to generate second data data2.

On the other hand, when it is not determined as data to be supplied to the last line in step S300, that is, when it is not located on the first line and the last line, the pattern of the data is checked (S400).

When it is determined in step S400 as the first pattern or the second pattern, it is determined whether the first data data1 is supplied to the first subpixel or the last subpixel (S402 and S411).

If it is determined in step S402 as the first data (data1) corresponding to the first sub-pixel, it is determined whether it is the first pattern. (S404) If it is determined as the first pattern in step S404, the first data (data1) is an odd line (S406) When it is determined in step S406 that the first data data1 is supplied to an odd number line, it is determined as the first data data1 supplied to the red subpixel R and is dimmed. (S408) When it is determined in step S406 that the first data data1 is not supplied to the odd line, it is determined as the first data data1 supplied to the blue subpixel B, and dimming is performed (S410).

If the first pattern is not determined in step S404, it is determined whether the first data data1 is supplied to the odd line. (S414) If it is determined that the first data data1 is supplied to the odd line in step S414, the green sub It is determined as the first data data1 supplied to the pixel G2 and dimmed. (S416) If it is determined that the first data data1 is not supplied to the odd line in step S414, the green subpixel G1 is supplied. It is determined as the first data data1 and is dimmed (S418).

If it is determined in step S411 as the first data (data1) corresponding to the last sub-pixel, it is determined whether it is the first pattern. (S412) If it is determined as the first pattern in step S412, the first data (data1) is an odd number line. It is determined whether it is supplied. (S414) When it is determined in step S414 that the first data data1 is supplied to an odd number line, it is determined as the first data data1 supplied to the green subpixel G2 and is dimmed. S416) When it is determined in step S414 that the first data data1 is not supplied to the odd line, it is determined as the first data data1 supplied to the green subpixel G1 and is dimmed (S418).

If the first pattern is not determined in step S412, it is determined whether the first data data1 is supplied to the odd line. (S406) If it is determined that the first data data1 is supplied to the odd number line in step S406, the red sub It is determined as the first data data1 supplied to the pixel R and is dimmed. (S408) If it is determined that the first data data1 is not supplied to the odd lines in step S406, the blue subpixel B is supplied. It is determined as the first data data1 and is dimmed (S410).

In fact, in the case of the present invention, when data is input in the first pattern or the second pattern, S400 for subpixels positioned at the edges of lines other than the first and last lines, that is, the first and last subpixels. Dimming is performed using steps S418.

When it is determined in step S400 as the third pattern or the fourth pattern, it is determined whether the first data data1 is supplied to the first or last subpixel (S421 and S425).

If it is determined in step S421 as the first data (data1) corresponding to the first sub-pixel, it is determined whether it is a third pattern. (S420) When it is determined as the third pattern in step S420, the first data (data1) is an odd line (S422) In step S422, when it is determined that the first data data1 is supplied to an odd number line, it is determined as the first data data1 supplied to the blue subpixel B and is dimmed. (S410) When it is determined in step S422 that the first data data1 is not supplied to the odd lines, it is determined as the first data data1 supplied to the red subpixel R and is dimmed (S408).

If the third pattern is not determined in step S420, it is determined whether the first data data1 is supplied to the odd line. (S424) If it is determined that the first data data1 is supplied to the odd line in step S424, the green sub It is determined as the first data data1 supplied to the pixel G1 and subjected to dimming. (S418) If it is determined that the first data data1 is not supplied to the odd line in step S424, the green subpixel G2 is supplied. It is determined as the first data (data1) to be dimmed and processed (S416).

If it is determined in step S425 as the first data (data1) corresponding to the last sub-pixel, it is determined whether it is a third pattern. (S426) If it is determined as the third pattern in step S426, the first data (data1) is an odd number line. It is determined whether it is supplied. (S424) When it is determined in step S424 that the first data data1 is supplied to an odd number line, it is determined as the first data data1 supplied to the green subpixel G1 and is dimmed. S418) If it is determined in step S424 that the first data data1 is not supplied to the odd line, it is determined as the first data data1 supplied to the green subpixel G2 and is dimmed (S416).

If the third pattern is not determined in step S426, it is determined whether the first data data1 is supplied to the odd-numbered lines. (S422) If it is determined that the first data data1 is supplied to the odd-numbered lines in step S422, the blue sub It is determined as the first data data1 supplied to the pixel B and subjected to dimming. (S410) If it is determined that the first data data1 is not supplied to the odd line in step S422, the red subpixel R is supplied. It is determined as the first data (data1) to be dimmed and processed (S408).

In fact, in the case of the present invention, when data is input in the third or fourth pattern, subpixels positioned at the edges of lines other than the first line and the last line, that is, the first subpixel and the last subpixel are detailed. Dimming is performed by repeating one process.

As described above, the dimming unit 34 of the present invention dims the subpixels located at the edge of the panel in response to the first pattern, the second pattern, the third pattern, and the fourth pattern of data while being driven as shown in FIG. 6. do. Here, the dimming value corresponding to each of the sub-pixels R, B, G1, G2 is experimentally determined in consideration of the resolution, inches, and luminous efficiency of the panel. For example, in a specific panel, the second data data2 may be generated by performing dimming so that the luminance decreases by 1/2 corresponding to the red sub-pixel R and the blue sub-pixel B. In addition, the green sub-pixel G1 is 3/5, and the green sub-pixel G2 is 4/7, and the second data data2 may be generated by performing a dimming process to lower the luminance.

That is, the dimming unit 34 of the present invention can detect the red sub-pixel (R), the blue sub-pixel (B), and the green sub-pixel (G1, G2) located at the edge of the panel while being driven as shown in FIG. In response to this, there is an advantage that various dimming processes are possible.

Although the technical idea of the present invention has been described in detail according to the preferred embodiment, it should be noted that the above-described embodiment is for the purpose of explanation and not limitation. In addition, those of ordinary skill in the technical field of the present invention will appreciate that various modifications are possible within the scope of the technical idea of the present invention.

10: scan driver 20: data driver
30: data processing unit 32: SPR unit
34: dimming unit 40: pixel unit
50: timing control unit 100: pixel area

Claims (18)

Pixel rows and pixel columns of a first group including odd-numbered pixel rows and odd-numbered pixel columns;
Pixel rows and pixel columns of a second group including even-numbered pixel rows and even-numbered pixel columns;
First color sub-pixels and second color sub-pixels are arranged only in pixel rows and pixel columns of any one of the first and second groups, and are alternately arranged in each of the pixel rows and pixel columns of the one group Field;
A third color sub-pixel arranged in pixel rows and pixel columns of another group of the first and second groups,
The organic light emitting display panel, wherein a size of one of the third color sub-pixels is smaller than a size of one of the first color or second color sub-pixels. delete The method of claim 1,
The first color sub-pixels emit red light, the second color sub-pixels emit blue light, and the third color sub-pixels emit green light. The method of claim 1,
Each of the third color sub-pixels is disposed in a diagonal direction with respect to one of the first color or second color sub-pixels. The method of claim 1,
The third color sub-pixels are arranged only in the other group of pixel rows and pixel columns. Pixel rows and pixel columns of a first group including odd-numbered pixel rows and odd-numbered pixel columns;
Pixel rows and pixel columns of a second group including even-numbered pixel rows and even-numbered pixel columns;
First color sub-pixels and second color sub-pixels disposed at least one in each of pixel rows and pixel columns of any one of the first and second groups and alternately arranged with each other;
A third color sub-pixel arranged in pixel rows and pixel columns of another group of the first and second groups,
Each of the pixel rows and the pixel columns of any one group does not include a third color sub-pixel,
The organic light emitting display panel, wherein a size of one of the third color sub-pixels is smaller than a size of one of the first color or second color sub-pixels. A first group of pixel rows and pixel columns including odd-numbered pixel rows and odd-numbered pixel columns, a second group of pixel rows and pixel columns including even-numbered pixel rows and even-numbered pixel columns, the first and second First color sub-pixels and second color sub-pixels alternately arranged in each of the pixel rows and pixel columns of any one of the groups, and pixel rows and pixel columns of the other group of the first and second groups A display panel having third color sub-pixels arranged only on the display panel;
A scan driver for driving scan lines connected to the first, second, and third color sub-pixels;
A data processor configured to receive first data and generate second data based on the first data;
A data driver connected to the first color, second color, and third color sub-pixels and configured to drive data lines driven by the first or second data,
The data processing unit generates the second data by changing a gray scale of first data corresponding to sub-pixels positioned at the edge of the display panel among the first color, second color, and third color sub-pixels. It includes a dimming unit for,
The dimming unit determines whether the first data is data for a first pixel row, a last pixel row, or other pixel rows of the display panel. delete The method of claim 7,
The dimming unit generates the second data by lowering a gray level of the first data. The method of claim 9,
The dimming unit includes first data corresponding to sub-pixels located in the first pixel row and the last pixel row, and a first sub-pixel corresponding to a first sub-pixel among sub-pixels located in the other pixel rows. The display device, wherein the second data is generated by lowering a gray level of the data. The method of claim 7,
The dimming unit generates the second data by changing a gray level of first data corresponding to sub-pixels selected according to a determination of the dimming unit among sub-pixels located in each pixel column of the display panel. The method of claim 7,
The display device, wherein a size of one of the third color sub-pixels is smaller than a size of one of the first color or second color sub-pixels. The method of claim 12,
The first color sub-pixels emit red light, the second color sub-pixels emit blue light, and the third color sub-pixels emit green light. The method of claim 7,
The display panel operates at a plurality of positions,
Each of the plurality of positions has a sub-pixel color pattern based on an arrangement of the first color, second color, and third color sub-pixels. The method of claim 14,
The first data is supplied according to a sub-pixel color pattern corresponding to each position of the display panel. The method of claim 15,
The data processing unit detects a pattern of the first data and performs dimming processing on the first data based on the detected pattern of the first data. The method of claim 7,
Each of the third color sub-pixels is disposed in a diagonal direction with respect to one of the first color or second color sub-pixels. The method of claim 7,
Each of the pixel rows and the pixel columns of the one group includes at least one of the first color sub-pixels and at least one of the second color sub-pixels, but does not include a third color sub-pixel .

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