KR102098199B1 - Display panel, display apparatus and the controlling method thereof - Google Patents

Abstract

A display panel is disclosed. A display panel composed of a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) sub-pixels, each of which is disposed adjacent to the first package and the first package And a second package, the first package includes B sub-pixels and G sub-pixels, and the second package includes R sub-pixels and W sub-pixels. Accordingly, resolution is increased while reducing power consumption of an LED display device including sub-pixels of R (Red), G (Green), B (Blue), and W (White).

Description

DISPLAY PANEL, DISPLAY APPARATUS AND THE CONTROLLING METHOD THEREOF}

The present invention relates to a display panel, a display device and a control method thereof, and more specifically, composed of a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) sub-pixels. It relates to a display panel, a display device and a control method thereof.

With the development of electronic technology, various types of electronic products have been developed and distributed. In particular, various display devices such as TVs, mobile phones, PCs, notebook PCs, PDAs, and the like are used in most general homes.

As the use of display devices increases, user needs for more various functions have also increased. Accordingly, the efforts of each manufacturer to meet user needs have also increased, and products with new functions that have not existed are appearing one after another.

In particular, as the use of LED display devices for advertisements or signboards increases, various technologies for efficiently driving the LED display devices have been created.

However, the conventional LED display device uses R (Red), G (Green), and B (Blue) LEDs. In this case, there is a problem in that a separate power construction is required due to high power consumption and a lot of electricity bills are generated.

In addition, R (Red), G (Green), B (Blue), and W (White) LEDs cannot be manufactured in a single package, and R (Red), G (Green), and B (Blue) , When each of the W (White) LED as a sub-pixel, there was a problem that the production cost is high.

The present invention has been devised to solve the above-described problem, and an object of the present invention is to display a display that includes R (Red), G (Green), B (Blue), and W (White) sub-pixels in two packages. Disclosed is a panel, a display device, and a method for controlling the same.

A display panel composed of a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) sub-pixels according to an embodiment of the present invention for achieving the above object, Each of the plurality of pixels includes a first package and a second package disposed adjacent to the first package, wherein the first package includes the B sub-pixel and the G sub-pixel, and the second package includes the R sub Pixels and W sub-pixels.

Here, a partition wall blocking light emitted from the B sub-pixels and G sub-pixels from being transmitted to the second package and blocking light emitted from the R sub-pixels and W sub-pixels from being transmitted to the first package. It may be disposed between the first package and the second package.

In addition, the W sub-pixel may include the B sub-pixel and a yellow phosphor.

In addition, the R, G, B, and W sub-pixels may be implemented as LEDs.

On the other hand, the display device according to an embodiment of the present invention is a display panel composed of a plurality of pixels including R (Red), G (Green), B (Blue), W (White) sub-pixel, the display panel Signal processing of the R, G, and B data included in the driving panel driver and the input image signal determines a W sub-pixel value, and determines the R, G, and B sub-pixel values based on the determined W sub-pixel value. And a processor that controls the panel driver to turn on the R, G, B, and W subpixels based on the determined R, G, B, and W subpixel values, and each of the plurality of pixels includes a first package. And a second package disposed adjacent to the first package, the first package including the B subpixel and the G subpixel, and the second package including the R subpixel and the W subpixel. .

Here, a partition wall blocking light emitted from the B sub-pixels and G sub-pixels from being transmitted to the second package and blocking light emitted from the R sub-pixels and W sub-pixels from being transmitted to the first package. It may be disposed between the first package and the second package.

In addition, the W sub-pixel may include the B sub-pixel and a yellow phosphor.

In addition, the R, G, B, and W sub-pixels may be implemented as LEDs.

Further, the processor performs gamma conversion on the R, G, and B data, determines the W sub-pixel value based on the gamma-corrected R, G, and B data, and determines the determined W The R, G, and B sub-pixel values may be determined by performing gamma-corrected inverse gamma conversion on the gamma-corrected R, G, and B data except for the sub-pixel value.

In addition, the processor, in one image frame period, the plurality of sub-pixels are turned on in a preset group unit, and the sub-pixel groups arranged at positions shifted by a predetermined sub-pixel unit are sequentially turned on. The panel driver can be controlled.

Meanwhile, a control method of a display device including a display panel composed of a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) sub-pixels according to an embodiment of the present invention Silver, processing the R, G, B data included in the input image signal to determine the W sub-pixel value, determining the R, G, B sub-pixel value based on the determined W sub-pixel value and And controlling the R, G, B, and W subpixels to be turned on based on the determined R, G, B, and W subpixel values, wherein each of the plurality of pixels includes a first package and the first package. And a second package disposed adjacent to the first package, wherein the first package includes the B sub-pixel and the G sub-pixel, and the second package includes the R sub-pixel and the W sub-pixel.

Here, a partition wall blocking light emitted from the B sub-pixels and G sub-pixels from being transmitted to the second package and blocking light emitted from the R sub-pixels and W sub-pixels from being transmitted to the first package. It may be disposed between the first package and the second package.

In addition, the W sub-pixel may include the B sub-pixel and a yellow phosphor.

In addition, the R, G, B, and W sub-pixels may be implemented as LEDs.

In addition, in the determining of the W sub-pixel value, gamma conversion is performed on the R, G, and B data, and the W sub-pixel value is based on the gamma-corrected R, G, and B data. Can decide.

In addition, the determining of the R, G, and B sub-pixel values may include performing gamma-corrected inverse gamma conversion on the gamma-corrected R, G, and B data excluding the determined W sub-pixel value. , G, B sub-pixel values may be determined.

In addition, the control method of the display device according to an embodiment of the present invention is a sub-arranged in a position where the plurality of pixels are turned on in a preset group unit and shifted by a predetermined sub-pixel unit in one image frame section. The method may further include controlling the pixel groups to be sequentially turned on.

According to various embodiments of the present invention as described above, the resolution is increased while reducing power consumption of the LED display device including R (Red), G (Green), B (Blue), and W (White) sub-pixels. .

1 is a diagram illustrating a case where B (Blue) and W (White) sub-pixels are disposed adjacent to each other.
2 is a diagram illustrating a structure of a pixel including R, G, B, and W subpixels according to an embodiment of the present invention.
3 is a view for explaining a partition wall according to an embodiment of the present invention.
4 to 11 are views illustrating various arrangement structures of the first package and the second package according to an embodiment of the present invention.
12A is a block diagram showing the configuration of a display device according to an embodiment of the present invention.
12B is a block diagram showing a detailed configuration of a panel driver according to an embodiment of the present invention.
13 is a diagram illustrating a process of determining R, G, B, and W sub-pixel values according to an embodiment of the present invention.
14 is a view for explaining a method of turning on a plurality of sub-pixels according to an embodiment of the present invention.
15 is a control of a display device including a display panel composed of a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) sub-pixels according to an embodiment of the present invention It is a flow chart for explaining the method.

Hereinafter, the present invention will be described in more detail with reference to the drawings. And, in the description of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or relationship. Therefore, the definition should be made based on the contents throughout this specification.

1 is a diagram illustrating a case where B (Blue) and W (White) sub-pixels are disposed adjacent to each other.

Referring to FIG. 1, the W sub-pixel includes a B sub-pixel and a yellow color phosphor 120, and light emitted from the B sub-pixel passes through the yellow color phosphor 120 to emit white light 121. do.

Here, when the B sub-pixel 110 disposed adjacent to the W sub-pixel emits light, the light 111 emitted from the B sub-pixel 110 is reflected by the yellow color phosphor 120 included in the W sub-pixel, and is intended White light 112 may be emitted unintentionally.

Here, the light reflected from the yellow color phosphor 120 included in the W sub-pixel among the light emitted from the B sub-pixel 110 is called an excitation wavelength.

Accordingly, when the B sub-pixel 110 disposed adjacent to the W sub-pixel is turned on, blue light and white light 112 may be mixed and emitted instead of pure blue light.

In addition, since the green color light emitted from the G sub-pixel is located in a wavelength band similar to the blue color light emitted from the B sub-pixel, when the green color light is also reflected by the yellow color phosphor 120, the white light 121 ) May be released.

That is, assuming that the case where the G sub-pixel is disposed adjacent to the W sub-pixel instead of the B sub-pixel 110 in FIG. 1, light emitted from the G sub-pixel while the G sub-pixel is emitted is yellow included in the W sub-pixel. White light 112 may be unintentionally emitted by being reflected by the colored phosphor 120.

Accordingly, only when the B sub-pixel and the G sub-pixel are not disposed adjacent to the W sub-pixel, when the B sub-pixel and the G sub-pixel are turned on, pure blue light and green color light are emitted. .

In contrast, the red color light emitted from the R sub-pixel is located in a different wavelength band from the blue color light and the green color light emitted from the B sub-pixel and the G sub-pixel, and thus the red color light emitted from the R sub-pixel. The white light 112 is not emitted even if it is reflected by the yellow color phosphor 120 included in the W sub-pixel.

Due to this reason, the B sub-pixel and the G sub-pixel are collected in one package, and the R sub-pixel and the W sub-pixel are collected in another package. Accordingly, a pixel structure including R, G, B, and W subpixels according to an embodiment of the present invention may be implemented as shown in FIG. 2.

2 is a diagram illustrating a structure of a pixel including R, G, B, and W subpixels according to an embodiment of the present invention.

In the display panel composed of a plurality of pixels including R, G, B, and W sub-pixels, each of the plurality of pixels includes a first package and a second package disposed adjacent to the first package, and the first package Contains B sub-pixels and G sub-pixels, and the second package includes R sub-pixels and W sub-pixels.

Referring to FIG. 2, one pixel 200 including sub-pixels R 221, G 212, B 211, and W 222 includes a first package 210 and a second package 220 It includes. Here, the package means a plate including two sub-pixels among R, G, B, and W sub-pixels.

The first package 210 includes B sub-pixels 211 and G sub-pixels 212, and the second package 220 includes R sub-pixels 221 and W sub-pixels 222.

Then, the blue color light and the green color light emitted from the B subpixel 211 and the G subpixel 212 are prevented from being transmitted to the second package 220, and the R subpixel 221 and the W subpixel are blocked. A partition wall blocking the light emitted from the 222 from being transmitted to the first package 210 may be disposed between the first package 210 and the second package 220.

As described above, since the partition wall is disposed between the first package 210 and the second package 220, blue light emitted from the B sub-pixel 211 or green light emitted from the G sub-pixel 212. Transmission to the second package 220 may be blocked, and accordingly, blue color light emitted from the B sub-pixel 211 or green color light emitted from the G sub-pixel 212 may be blocked in the second package. It is possible to prevent white light from being emitted by being reflected by the yellow color phosphor of the W sub-pixel 222 included in the 220.

3 is a view for explaining a partition wall according to an embodiment of the present invention.

Referring to FIG. 3, as described with reference to FIG. 2, the first package 210 including the B sub-pixel 211 and the G sub-pixel 212 and the R sub-pixel 221 and the W sub-pixel 222 It can be seen that the partition walls 230 are disposed between the second package 220.

Further, the blue color light emitted from the B sub-pixel 211 or the green color light emitted from the G sub-pixel 212 cannot be transmitted to the second package 220 by the partition wall 230. The blue color light emitted from the B sub-pixel 211 or the green color light emitted from the G sub-pixel 212 is reflected in the yellow color phosphor of the W sub-pixel 222 included in the second package 220. As a result, it is possible to prevent a phenomenon in which white light is emitted.

The partition wall 230 may be made of the same material as the material constituting the first package 210 or the second package 220.

Meanwhile, in FIG. 3, the B sub-pixel 211 and the G sub-pixel 212 are included in the first package 210, and the R sub-pixel 221 and the W sub-pixel 222 are included in the second package 220. Although described as being included, the B sub-pixel 211 and the G sub-pixel 212 are included in the second package 220 and the R sub-pixel 221 and the W sub-pixel 222 are the first package 220 It is natural that it may be included in.

In addition, the above-described W sub-pixel 222 may be implemented to include a B sub-pixel and a yellow phosphor, and the R, G, B, and W sub-pixels 211, 212, 221, and 222 are implemented as LEDs. Can be.

In addition, the first package and the second package including each of the B sub-pixel 211 and the G sub-pixel 212 and the R sub-pixel 221 and the W sub-pixel 222 may be variously arranged, for this It will be described in detail through FIGS. 4 to 11.

4 to 11 are views illustrating various arrangement structures of the first package and the second package according to an embodiment of the present invention.

Referring to FIG. 4, the first pixel 410 and the second pixel 420 are connected and disposed, and the first pixel 410 includes an R sub-pixel 431 and a W sub-pixel 432. A package 430 and a second package 440 including a B sub-pixel 441 and a G sub-pixel 442 may be included.

Here, in FIG. 4, unlike in FIG. 3, the first package 430 and the second package 440 are arranged side by side in the horizontal direction, and the R sub-pixel 431 and the W sub-pixel 432 are first pixels 410 ) Is included in the first package 430 disposed on the first line, and the B subpixel 441 and the G subpixel 442 are disposed on the second package of the first pixel 410 ( 440).

That is, when compared with FIG. 3, the structure of the R, G, B, and W subpixels arranged in the pixel 200 of FIG. 3 is arranged in the order of B, R, W, and G in the clockwise direction, whereas in FIG. The structures of the R, G, B, and W sub-pixels arranged in the pixel 410 are arranged in the clockwise order of R, W, G, B.

However, FIGS. 3 and 4 are the same in that the W sub-pixels are not disposed in one package with the B sub-pixels or G sub-pixels.

In addition, referring to FIG. 5, the first pixel 510 and the second pixel 520 are connected and disposed, and the first pixel 510 includes a B sub-pixel 531 and a G sub-pixel 532. The first package 530 may include a second package 540 including an R sub-pixel 541 and a W sub-pixel 542.

Here, in FIG. 5, the first package 530 and the second package 540 are arranged side by side in the horizontal direction as in FIG. 4, but unlike in FIG. 4, the B sub-pixel 531 and the G sub-pixel 532 It is included in the first package 530 disposed on the first line of the first pixel 510, and the R sub-pixel 541 and the W sub-pixel 542 are placed on the second line of the first pixel 510. It is included in the second package 540.

That is, as compared with FIG. 4, the structures of the R, G, B, and W subpixels arranged in the first pixel 410 of FIG. 4 are arranged in the clockwise order of R, W, G, and B, The structures of the R, G, B, and W sub-pixels arranged in the first pixel 510 of FIG. 5 are arranged in the clockwise order of B, G, W, and R.

Of course, in FIG. 5, the W sub-pixel 542 is not disposed in one package with the B sub-pixel 531 or the G sub-pixel 532.

In addition, referring to FIG. 6, the first pixel 610 and the second pixel 620 are connected and disposed, and the first pixel 610 includes a G sub-pixel 631 and a B sub-pixel 632. The first package 630 may include a second package 640 including the W sub-pixel 641 and the R sub-pixel 642.

Here, FIG. 6 shows that the positions of the G sub-pixel 631 and the B sub-pixel 632 in the first package 630 are changed when compared with FIG. 5. That is, the first package 530 of FIG. 5 has a B sub-pixel 531 on the left side and a G sub-pixel 532 on the right side, while the first package 630 of FIG. 6 is on the left side. The G sub-pixel 631 is disposed, and the B sub-pixel 632 is disposed to the right.

In addition, it can be seen that the positions of the W sub-pixel 641 and the R sub-pixel 642 in the second package 640 are also changed from each other compared to FIG. 5. That is, the second package 540 of FIG. 5 has an R subpixel 541 on the left side and a W subpixel 542 on the right side, while the second package 640 of FIG. 6 is on the left side. The W sub-pixel 641 is disposed, and the R sub-pixel 642 is disposed on the right.

In this case, the structures of the R, G, B, and W sub-pixels arranged in the first pixel 510 of FIG. 5 are arranged in the order of B, G, W, R in the clockwise direction, whereas the structure of the sub-pixels in FIG. The structures of the R, G, B, and W sub-pixels arranged in one pixel 610 are arranged in the clockwise order of G, B, R, and W.

Similarly, in FIG. 6, the W sub-pixel 641 is not disposed in one package with the G sub-pixel 631 or the B sub-pixel 632.

In addition, referring to FIG. 7, the first pixel 710 and the second pixel 720 are connected and disposed, and the first pixel 710 includes a W sub-pixel 731 and an R sub-pixel 732. The first package 730 may include a second package 740 including a G sub-pixel 741 and a B sub-pixel 742.

Here, as compared with FIG. 6, it can be seen that the types of sub-pixels included in the first package 730 and the types of sub-pixels included in the second package 740 are interchanged. That is, the first package 630 of FIG. 6 includes G sub-pixels 631 and B sub-pixels 632, and the second package 640 includes W sub-pixels 641 and R sub-pixels 642. On the other hand, the first package 730 of FIG. 7 includes W sub-pixels 731 and R sub-pixels 732, and the second package 740 includes G sub-pixels 741 and B sub-pixels 742. Includes.

In this case, the structures of the R, G, B, and W subpixels arranged in the first pixel 610 of FIG. 6 are arranged in the order of G, B, R, W in the clockwise direction, while R of FIG. 7 The structures of, G, B, and W subpixels are arranged clockwise in the order of W, R, B, and G.

Similarly, in FIG. 7, the W sub-pixel 731 is not disposed in one package with the G sub-pixel 741 or the B sub-pixel 742.

On the other hand, referring to FIG. 8, the first package and the second package are arranged side by side in the vertical direction in the pixel, which is the first package 430 and the second package 440 disposed in the pixel illustrated in FIG. 4. ) Is the same as the structure arranged by rotating clockwise.

In this case, the structures of the R, G, B, and W subpixels arranged in the first pixel 410 of FIG. 4 are arranged in the clockwise order of R, W, G, and B, while the R of FIG. 8 The structures of, G, B, and W subpixels are arranged clockwise in the order of B, R, W, and G.

Similarly, in FIG. 8, the W sub-pixel is not disposed in one package with the B sub-pixel or the G sub-pixel.

On the other hand, referring to FIG. 9, the first package and the second package are disposed side by side in the vertical direction in the pixel, which is the first package 530 and the second package 540 disposed in the pixel illustrated in FIG. 5. ) Is the same as the structure arranged by rotating clockwise.

In this case, the structures of the R, G, B, and W subpixels arranged in the first pixel 510 of FIG. 5 are arranged in the order of B, G, W, R in the clockwise direction, while R of FIG. 9 The structures of, G, B, and W subpixels are arranged clockwise in the order of R, B, G, and W.

Similarly, in FIG. 9, the W sub-pixel is not disposed in one package with the B sub-pixel or the G sub-pixel.

On the other hand, referring to FIG. 10, the first package and the second package are arranged side by side in the vertical direction in the pixel, which is the first package 630 and the second package 640 disposed in the pixel illustrated in FIG. 6. ) Is the same as the structure arranged by rotating clockwise.

In this case, the structures of the R, G, B, and W subpixels arranged in the first pixel 630 of FIG. 6 are arranged in the order of G, B, R, and W in the clockwise direction, while R of FIG. 10 The structures of, G, B, and W subpixels are arranged clockwise in the order of W, G, B, and R.

Similarly, in FIG. 10, the W sub-pixel is not disposed in one package with the B sub-pixel or the G sub-pixel.

On the other hand, referring to FIG. 11, the first package and the second package are arranged side by side in the vertical direction in the pixel, which is the first package 730 and the second package 740 disposed in the pixel illustrated in FIG. 7. ) Is the same as the structure arranged by rotating clockwise.

In this case, the structures of the R, G, B, and W sub-pixels arranged in the first pixel 710 of FIG. 7 are arranged in the order of W, R, B, G in the clockwise direction, while R of FIG. 11 The structures of the sub-pixels of,, G, B, and W are arranged clockwise in the order of G, W, R, and B.

Likewise, in FIG. 11, the W sub-pixel is not disposed in one package with the B sub-pixel or the G sub-pixel.

As illustrated in FIGS. 4 to 11, the R, G, B, and W subpixels according to an embodiment of the present invention may be arranged according to various positions, except that the W subpixel is one of the B subpixel or the G subpixel. It is the same in that it is not placed inside the package.

In addition, although the partition wall is not separately displayed inside the pixels illustrated in FIGS. 4 to 11, as illustrated in FIG. 3, between blue light emitted from the B sub-pixel between the first package and the second package included in the pixel It is natural that partition walls may be disposed to prevent the green color light emitted from the G sub-pixel from being transmitted to the phosphor included in the W sub-pixel.

On the other hand, Figure 12a is a block diagram showing the configuration of a display device according to an embodiment of the present invention.

Referring to FIG. 12A, the display device 1200 may include a display panel 1210, a panel driver 1220, and a processor 1230. Here, the display device 1200 may be implemented as various types of electronic devices such as a TV, an electronic blackboard, an electronic table, a large format display (LFD), a smart phone, a tablet, a desktop PC, and a laptop. In particular, all electronic devices that display images through LED elements may be included.

Here, the display panel 1210 may include a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) sub-pixels. Here, the W sub-pixel may be implemented as including a B sub-pixel and a yellow phosphor.

In addition, the panel driver 1220 may drive the display panel 1210, and will be described in detail with reference to FIG. 12B.

12B is a block diagram showing a detailed configuration of a panel driver according to an embodiment of the present invention.

Referring to FIG. 12B, the panel driver 1220 includes a data driver 1221, a gate driver 1222, and a timing controller 1223.

The data driver 1221 is connected to each liquid crystal cell in the display panel 1210 through a plurality of data lines.

The gate driver 1222 is connected to each liquid crystal cell in the display panel 1210 through a plurality of gate lines.

Each data line is connected to the source electrode of the thin film transistors 1211 in the transistor layer included in the display panel 1210, and each gate line is connected to the gate electrode of the thin film transistors 1211. 12B shows a case where each liquid crystal cell is composed of an R subpixel, a G subpixel, a B subpixel, and a W subpixel.

The gate driver 1222 applies a scan pulse through the gate line to perform a scan operation that turns on a pixel corresponding to each color frame. The data driver 1221 applies a data signal corresponding to each pixel value in the image data to the scanned pixel to perform a display operation.

The timing controller 1223 applies control signals to each of the data driver 1221 and the gate driver 1222 according to the image data included in the input image signal, and controls to perform the above-described scan operation and display operation.

In FIG. 12B, an embodiment in which the timing controller 1223 is used has been described, but in the case of a display device having a small panel, the timing controller 1223 can be used instead of the CPU.

Meanwhile, the processor 1230 processes the R, G, and B data included in the input image signal to determine the W sub-pixel value, and determines the R, G, and B sub-pixel values based on the determined W sub-pixel value. The panel driver 1220 may be controlled to turn on the R, G, B, and W subpixels based on the determined R, G, B, and W subpixel values.

Here, each of the plurality of pixels includes a first package and a second package disposed adjacent to the second package, the first package includes B sub-pixels and G sub-pixels, and the second package includes R sub-pixels and W It may include a sub-pixel.

In addition, as described in FIG. 3, light emitted from the B sub-pixels and G sub-pixels is blocked from being transmitted to the second package, and light emitted from the R sub-pixels and W sub-pixels is blocked from being transmitted to the first package. The partition wall may be disposed between the first package and the second package.

In addition, the R, G, B, and W sub-pixels may be implemented as LEDs.

In particular, the processor 1230 may process the R, G, and B data included in the input image signal to determine the W sub-pixel value. That is, since the input video signal includes only data related to R, G, and B, and does not include data for W sub-pixel values, the processor 1230 receiving the video signal receives the input video signal. W sub-pixel values should be determined from the R, G, and B data included in.

Specifically, the processor 1230 may perform gamma conversion on R, G, and B data, and determine a W sub-pixel value based on gamma-corrected R, G, and B data.

In addition, the processor 1230 may determine R, G, and B subpixel values based on the determined W subpixel values.

Specifically, the processor 1230 performs gamma correction on the R, G, and B data, determines the W sub-pixel value based on the gamma-corrected R, G, and B data, and gamma remaining except for the determined W sub-pixel value. R, G, and B subpixel values may be determined by performing inverse gamma conversion on the corrected R, G, and B data.

For example, gamma correction is performed on R, G, and B data to determine values of gamma corrected R, G, and B data, respectively, based on gamma corrected R, G, and B data values. When the W sub-pixel value is determined to be 50, the processor 1230 determines the value of the gamma-corrected R, G, and B data except for the determined W sub-pixel value of 50, that is, the W sub-pixel in the gamma-corrected R data value 80. Excluding the value 50, the remaining gamma corrected R data value is 30, and excluding the W sub-pixel value 50 from the gamma corrected G data value 60, the remaining gamma corrected G data value is 10, When the W sub-pixel value 50 is excluded from the gamma corrected B data value 70, the remaining gamma corrected B data value may be determined as 20.

Also, the processor 1230 may perform an inverse gamma correction on the remaining gamma corrected R, G, and B data values 30, 10, and 20 to determine R, G, and B subpixel values.

In addition, the processor 1230 may control the panel driver 1220 such that the R, G, B, and W subpixels are turned on based on the determined R, G, B, and W subpixel values.

As described above, the process of obtaining the R, G, B, and W sub-pixel values will be described in detail with reference to FIG. 13.

13 is a diagram illustrating a process of determining R, G, B, and W sub-pixel values according to an embodiment of the present invention.

Referring to FIG. 13, the processor 1230 performs gamma correction on R, G, and B data included in the input image signal (1310), and target X, based on gamma corrected R, G, and B data. The Y and Z values are calculated (1320). Here, the target X, Y, and Z values are displayed when the R, G, and B data included in the input image signal are actually implemented as R, G, and B sub-pixel values in the display panel 1210 to display the image ( 1210) means the value actually measured.

Specifically, the processor 1230 may calculate target X, Y, and Z values based on gamma corrected R, G, and B data through Equation 1 below.

That is, [R; G; B] means gamma corrected R, G, B data, [X _T ; Y _T ; Z _T ] denotes target X, Y, and Z values, and a 3X3 matrix denotes a transformation matrix for converting gamma-corrected R, G, and B data into target X, Y, and Z values.

Then, the processor 1230 may detect the W sub-pixel value within a range not exceeding the target X, Y, and Z values (1330).

Specifically, the processor 1230 may detect the W sub-pixel value through Equation 2 below.

Specifically, the target X, Y, and Z values are the transformation matrix 3X3 matrix for converting gamma-corrected R, G, and B data into the target X, Y, and Z values, and the calculated values of the variables R ', G', and B '. It can be expressed as the sum of W sub-pixel values.

Here, the values of the variables R ', G', and B 'correspond to each of the gamma-corrected R, G, and B data excluding the determined W sub-pixel values, and the values of the variables R', G ', and B' are respectively R sub Pixel values, G sub-pixel values, and B sub-pixel values.

Then, the processor 1230 may determine R, G, and B subpixel values based on the detected W subpixel values (1340).

That is, the processor 1230 subtracts the detected W sub-pixel value from each of the gamma-corrected R, G, and B data, and performs an inverse gamma conversion on the R, G, and B sub-pixel values. Can decide.

Specifically, the processor 1230 may calculate the remaining values R ', G', and B 'through Equation 3 below.

That is, [X _T ; Y _T ; Z _T ] -W [X _W ; Y _W ; Z _W ] is the target X, Y, and Z values, that is, the sub-pixel values of the gamma-corrected R, G, and B data boxes, respectively, and the remaining values, and the remaining values are gamma-corrected to inverse transform to perform R, G , B sub-pixel values R ', G', and B 'may be determined.

As such, the processor 1230 may detect R subpixel values, G subpixel values, B subpixel values, and W subpixel values from R, G, and B data included in the image signal input through the above-described process. The panel driver 1220 may control the R, G, B, and W subpixels to be turned on based on the detected R, G, B, and W subpixel values.

On the other hand, the processor 1230, in one image frame section, a plurality of sub-pixels are turned on in a preset group unit, and the sub-pixel groups arranged at positions shifted by a predetermined sub-pixel unit are sequentially turned on. The drive unit can be controlled.

Specifically, the processor 1230 turns on a plurality of sub-pixels in a predetermined group unit within a partial section of one video frame among a plurality of video frames constituting the input video signal, and then the rest of one video frame In some sections, a group of sub-pixels disposed at positions shifted by a predetermined sub-pixel unit may be sequentially turned on.

That is, the processor 1230 may time-division in one image frame section to emit all the plurality of sub-pixels included in the display panel 1210 at least once, and accordingly, the resolution corresponding to one video frame section Rewards the effect of increasing the resolution.

14 is a view for explaining a method of turning on a plurality of sub-pixels according to an embodiment of the present invention.

Referring to FIG. 14, a display panel composed of a plurality of pixels including sub-pixels of R (Red), G (Green), B (Blue), and W (White) is illustrated. Here, the B sub-pixel 1422 and the G sub-pixel 1421 are included in one package, and the R sub-pixel 1423 and the W sub-pixel 1424 are included in another package. Here, the W sub-pixel 1424 outputs white light, and the luminance may be increased accordingly.

In addition, the arrangement structure of the R, G, B, and W sub-pixels illustrated in FIG. 14 is a pentyl structure arranged in a square shape, but is not limited thereto and may be arranged in a structure arranged in a diagonal direction.

Specifically, a process of controlling a plurality of sub-pixels using a driving frequency of the display panel 1210 of 240 Hz will be described.

When a driving frequency of 240 Hz is used, the processor 1230 bundles a plurality of sub-pixels of R, G, B, and W in a preset group unit in four sub-field periods during one image frame period 1410 and turns them on. I can do it.

The processor 1230 sets a plurality of sub-pixels of R 1423, G 1421, B 1422, and W 1424 in a first sub-field section of one video frame section 1410 in a preset group unit. (1420) to turn it on. Then, the predetermined group unit 1420 is continuously arranged.

Further, the processor 1230 is shifted to include a portion of the sub-pixels 1421, 1422, 1423, and 1424 turned on in the first sub-field period in the second sub-field period of one image frame period 1410 The sub-pixel group 1430 disposed in may be turned on.

That is, the R sub-pixels 1423 and W sub-pixels 1424 turned on in the first sub-field period are also turned on in the second sub-field period. Accordingly, the sub-pixel group 1430 disposed at a shifted position to include the R sub-pixel 1423 and the W sub-pixel 1424 turned on in the first sub-field section is turned on, and the first sub-field section is turned on. The interval to shift to include the R sub-pixel 1423 turned on and the W sub-pixel 1424 is a predetermined sub-pixel unit.

Also, in the second sub-field section, the processor 1230 is a sub-pixel group arranged at a position shifted by a preset sub-pixel unit in the horizontal direction based on the preset group unit 1420 turned on in the first sub-field section. (1430) is controlled to be turned on sequentially, and in the third sub-field section, the position shifted by a preset sub-pixel unit in the vertical direction based on the preset group unit 1420 turned on in the first sub-field section. The sub-pixel group 1440 disposed in the control may be sequentially turned on.

In addition, in the fourth sub-field section, the sub-pixel group 1450 disposed at a position shifted by a preset sub-pixel unit in the vertical and horizontal directions based on the preset group unit 1420 turned on in the first sub-field section. It can be controlled to turn on sequentially.

The preset sub-pixel units of the third sub-field section and the fourth sub-field section are shifted to include some of the sub-pixels turned on in the first sub-field section, as described in the second sub-field section.

In addition, the processor 1230 can increase the resolution compensation effect by turning on a plurality of sub-pixels four times during one image frame section 1410.

As a result, the processor 1230 sequentially sequentially subpixel groups 1430, 1440, and 1450 including a plurality of subpixels that exist between preset group units 1420 turned on in the first subfield period. Turns on in the second sub-field period to the fourth sub-field period.

Meanwhile, when controlling a plurality of sub-pixels using a driving frequency of 120 Hz, the processor 1230 may process a plurality of sub-pixels of R, G, B, and W in two sub-field periods during one image frame period 1460 You can turn them on by grouping them in a preset group unit.

Specifically, the processor 1230 bundles a plurality of sub-pixels of R, G, B, and W in a preset group unit in a first sub-field section of one video frame section 1460, and then turns them on. In the second sub-field period, a group of sub-pixels disposed at a shifted position to include some of the sub-pixels turned on in the first sub-field period may be turned on.

Here, the processor 1230 may shift a group of sub-pixels by differently applying a predetermined sub-pixel unit based on a driving frequency of the display panel 1210.

That is, when the processor 1230 turns on a plurality of sub-pixels using a driving frequency of 240 Hz, it is turned on while being shifted by being grouped and shifted in groups of preset groups in four sub-field sections. In the case of using a frequency, since it is turned on while being shifted in groups of preset groups in the second sub-field section, the preset sub-pixel units that are shift intervals are different.

For example, when a driving frequency of 120 Hz is used, the processor 1230 controls the sub-pixel group disposed at a position shifted by a predetermined sub-pixel unit in the vertical and horizontal directions in the second sub-field section to turn on. In this case, compared with controlling the sub-pixel group disposed at a position shifted by a predetermined sub-pixel unit in the horizontal direction in the second sub-field section using a driving frequency of 240 Hz, the shift amount is different from each other. You can.

That is, in the case of using a driving frequency of 120 Hz, the process of turning on a plurality of sub-pixels in the second sub-field section and the third sub-field section in the case where the processor 1230 uses a driving frequency of 240 Hz is omitted. In addition, by performing only the process of turning on a plurality of sub-pixels in the first sub-field period and the fourth sub-field period, it is possible to make the user feel the effect that the resolution is compensated.

On the other hand, when the W sub-pixel is used as described above, the luminance of the white light emitted through the W sub-pixel is relatively red, the G sub-pixel, and the red sub-pixel light emitted through the B sub-pixel, green color light. And since it is higher than the blue color light, power consumption may be reduced by half compared to a display panel using only R, G, and B sub-pixels.

On the other hand, Figure 15 is a display device including a display panel consisting of a plurality of pixels including R (Red), G (Green), B (Blue), W (White) sub-pixels according to an embodiment of the present invention It is a flow chart for explaining the control method of.

A control method of a display device including a display panel composed of a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) subpixels illustrated in FIG. 15 is an input image The R, G, and B data included in the signal is signal-processed to determine the W sub-pixel value (S1510).

Then, R, G, and B subpixel values are determined based on the determined W subpixel values (S1520).

Thereafter, the R, G, B, and W sub-pixels are controlled to be turned on based on the determined R, G, B, and W sub-pixel values (1530).

Here, each of the plurality of pixels includes a first package and a second package disposed adjacent to the first package, the first package includes B sub-pixels and G sub-pixels, and the second package includes R sub-pixels and W It may include a sub-pixel.

In addition, the first package and the partition wall to block the light emitted from the B sub-pixel and the G sub-pixel is transmitted to the second package and block the light emitted from the R sub-pixel and W sub-pixel to the first package It may be disposed between the second package.

Here, the W sub-pixel may include a B sub-pixel and a yellow phosphor.

In addition, R, G, B, and W sub-pixels may be implemented as LEDs.

In addition, in the determining of the W sub-pixel value, gamma conversion may be performed on the R, G, and B data, and the W sub-pixel value may be determined based on the gamma-corrected R, G, and B data. .

Then, the step of determining the R, G, and B sub-pixel values is performed by performing inverse gamma conversion on the gamma-corrected R, G, and B data excluding the determined W sub-pixel values to perform R, G, The B sub-pixel value can be determined.

In addition, the control method of the display device according to an embodiment of the present invention, in one image frame section, a plurality of pixels are turned on in a preset group unit, and sub-pixels arranged at positions shifted by a preset sub-pixel unit The method may further include controlling the groups to be sequentially turned on.

Meanwhile, a non-transitory computer readable medium in which a program for sequentially performing a control method according to the present invention is stored may be provided.

For example, determining the W sub-pixel value by signal processing the R, G, and B data included in the input image signal, and determining the R, G, and B sub-pixel values based on the determined W sub-pixel value, and Provided is a non-transitory computer readable medium storing a program that performs a step of controlling the R, G, B, and W subpixels to be turned on based on the R, G, B, and W subpixel values. Can be.

The non-transitory readable medium means a medium that stores data semi-permanently and that can be read by a device, rather than a medium that stores data for a short time, such as registers, caches, and memory. Specifically, the various applications or programs described above may be stored and provided in a non-transitory readable medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, and the like.

In addition, although the bus is not illustrated in the above-described block diagram showing the display device, communication between each component in the display device may be performed through the bus. Further, each device may further include a processor, such as a CPU or a microprocessor, which performs the various steps described above.

In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. In addition, various modifications can be implemented by those skilled in the art, and these modifications should not be individually understood from the technical idea or prospect of the present invention.

200: pixel 210: first package
220: second package 1200: display device
1210: display panel 1220: panel driver
1230: processor

Claims (17)

In the display panel consisting of a plurality of pixels including R (Red), G (Green), B (Blue), W (White) sub-pixel,
Each of the plurality of pixels includes a first package and a second package disposed adjacent to the first package,
The first package includes a first substrate provided with the B sub-pixels and G sub-pixels, the second package is different from the first substrate, and a second substrate provided with the R sub-pixels and W sub-pixels It includes, a display panel. According to claim 1,
The barrier ribs blocking light emitted from the B sub-pixels and G sub-pixels from being transferred to the second package and blocking the light emitted from the R-sub-pixels and W sub-pixels from being transmitted to the first package Display panel, characterized in that disposed between the first package and the second package. According to claim 1,
The W sub-pixel,
A display panel comprising the B sub-pixel and a yellow phosphor. According to claim 1,
The R, G, B, W sub-pixel is a display panel, characterized in that implemented by LED. A display panel composed of a plurality of pixels including R (Red), G (Green), B (Blue), and W (White) sub-pixels;
A panel driver driving the display panel; And
The R, G, and B data included in the input image signal are signal-processed to determine the W sub-pixel value, and the R, G, and B sub-pixel values are determined based on the determined W sub-pixel value, and the determined R, And a processor that controls the panel driver to turn on the R, G, B, and W subpixels based on G, B, and W subpixel values.
Each of the plurality of pixels includes a first package and a second package disposed adjacent to the first package,
The first package includes a first substrate provided with the B sub-pixels and G sub-pixels, the second package is different from the first substrate, and a second substrate provided with the R sub-pixels and W sub-pixels It includes, a display device. The method of claim 5,
The barrier ribs blocking light emitted from the B sub-pixels and G sub-pixels from being transferred to the second package and blocking the light emitted from the R-sub-pixels and W sub-pixels from being transmitted to the first package Display device, characterized in that disposed between the first package and the second package. The method of claim 5,
The W sub-pixel,
A display device comprising the B sub-pixel and a yellow phosphor. The method of claim 5,
The R, G, B, W sub-pixel is a display device, characterized in that implemented by LED. The method of claim 5,
The processor,
Gamma conversion is performed on the R, G, and B data, and the W sub-pixel value is determined based on the gamma-corrected R, G, and B data, and the remaining W sub-pixel values are excluded. And performing gamma-corrected inverse gamma conversion on gamma-corrected R, G, and B data to determine the R, G, and B sub-pixel values. The method of claim 5,
The processor,
In one image frame section, controlling the panel driver so that the plurality of sub-pixels are turned on in a preset group unit and the sub-pixel groups arranged at positions shifted by a preset sub-pixel unit is sequentially turned on. Display device characterized by. In the control method of a display device including a display panel composed of a plurality of pixels including a sub-pixel R (Red), G (Green), B (Blue), W (White),
Determining W sub-pixel values by signal processing R, G, and B data included in the input video signal;
Determining R, G, and B subpixel values based on the determined W subpixel values; And
And controlling the R, G, B, and W subpixels to be turned on based on the determined R, G, B, and W subpixel values.
Each of the plurality of pixels includes a first package and a second package disposed adjacent to the first package,
The first package includes a first substrate provided with the B sub-pixels and G sub-pixels, the second package is different from the first substrate, and a second substrate provided with the R sub-pixels and W sub-pixels That includes, the control method of the display device. The method of claim 11,
The barrier ribs blocking light emitted from the B sub-pixels and G sub-pixels from being transferred to the second package and blocking the light emitted from the R-sub-pixels and W sub-pixels from being transmitted to the first package The control method of the display device, characterized in that disposed between the first package and the second package. The method of claim 11,
The W sub-pixel,
The B sub-pixel and the control method of the display device comprising a yellow colored phosphor. The method of claim 11,
The R, G, B, W sub-pixel is a control method of a display device, characterized in that implemented by LED. The method of claim 11,
Determining the W sub-pixel value,
And performing gamma conversion on the R, G, and B data, and determining the W sub-pixel value based on the gamma-corrected R, G, and B data. The method of claim 11,
Determining the R, G, B sub-pixel value,
A gamma-corrected inverse gamma conversion is performed on the gamma-corrected R, G, and B data other than the determined W sub-pixel value to determine the R, G, and B sub-pixel values. Control method. The method of claim 11,
In one image frame section, controlling the plurality of pixels to be turned on in a preset group unit and sequentially turning on the sub-pixel groups arranged at positions shifted by a preset sub-pixel unit. Control method of a display device, characterized in that.

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