JP2018507526A - Display panel - Google Patents

Abstract

The display panel includes a plurality of quarter-type pixels. The quadrant pixel includes a W sub-pixel and a first sub-pixel, a second sub-pixel, and a third sub-pixel having different colors, and the first sub-pixel is adjacent to the second sub-pixel. And the first subpixel and the second subpixel are positioned on the second subpixel, have the same width, and a combination of the first subpixel and the second subpixel, The sub-pixel and the W sub-pixel form a quadrant pixel, and the pixel areas of the first sub-pixel and the second sub-pixel are smaller than the pixel areas of the third sub-pixel and the W sub-pixel. Display panels maintain pixel density while reducing power consumption and extending useful life.

Description

  The present invention relates to the field of display technology, and more particularly to display panels.

  Organic light-emitting diodes (OLEDs) are also called organic electroluminescent displays. OLED display technology has self-luminous properties and is specified with extremely thin coatings of organic materials and glass substrates. These organic materials emit light when an electric current passes through them. Furthermore, the OLED display screen has a large viewing angle and can save electrical energy.

  As display technology continues to evolve, panel low power consumption is a trend of progress. Due to the high efficiency of converting the electrical energy of white light OLED to light and longer service life, various companies have shown the parallel RGBW arrangement scheme shown in FIG. 1 or FIG. 2 to reduce power consumption. A system such as the 2-row 2-column RGBW system has been proposed individually. For high pixel density technology, it is difficult to manufacture a high-definition metal mask having good mechanical stability, and the key to manufacturing a high-definition metal mask is the arrangement method of pixels and subpixels. However, in the two pixel arrangement methods described above, four subpixels form one pixel. Therefore, the pixel density (Pixel Per Inch, PPI) of the panel is relatively low.

  As shown in FIG. 3, in the prior art, in order to increase the pixel density of the entire panel, a relatively small area is occupied for arranging the G subpixels in the R, G, and B subpixels. However, when the R, G, and B subpixels form one panel, the pixel density is ensured, but the power consumption is relatively high and the useful life is relatively short.

  Therefore, maintaining PPI while maintaining low power consumption of the display panel is a relatively difficult problem to be solved.

  Embodiments of the present invention provide a display panel, which maintains pixel density while reducing power consumption.

  The first aspect of the embodiment of the present invention is a plurality of quarter-type pixels, and the quadrant-type pixels are different from the W sub-pixel, the first sub-pixel, the second sub-pixel, and the third sub-pixel having different colors. The first subpixel is adjacent to the second subpixel and is located on the second subpixel, and includes the first subpixel and the second subpixel. The subpixels have the same width, and the combination of the first subpixel and the second subpixel, the third subpixel, and the W subpixel form a quadrant pixel, A display panel in which the pixel area of the sub-pixel and the second sub-pixel is smaller than the pixel area of the third sub-pixel and the W sub-pixel is provided.

  Referring to the first aspect of the embodiment of the present invention, in the first realization of the first aspect of the embodiment of the present invention, the combination of the first subpixel and the second subpixel is the third The combination of the first subpixel and the second subpixel is adjacent to the subpixel and has the same length as the third subpixel, and the W subpixel includes the first subpixel and the second subpixel. And on the upper side, lower side, left side or right side of the overall structure formed by the third sub-pixel.

  Referring to the first aspect of the embodiment of the present invention, in the second implementation of the first aspect of the embodiment of the present invention, the combination of the first subpixel and the second subpixel is a W subpixel. And the combination of the first subpixel and the second subpixel has the same length as the W subpixel, and the third subpixel includes the first subpixel, the second subpixel, and the W subpixel. It is arranged on the upper side, lower side, left side or right side of the overall structure formed by the sub-pixels.

  Referring to the first aspect of the embodiment of the present invention, in the third realization of the first aspect of the embodiment of the present invention, the third sub-pixel and the W sub-pixel are arranged horizontally, The sub-pixel and the W sub-pixel are adjacent on the long side, and the combination of the first sub-pixel and the second sub-pixel is the upper side and the lower side of the overall structure of the combination of the third sub-pixel and the W sub-pixel. Arranged on the left or right side.

  With reference to the first implementation of the embodiment of the present invention to the third implementation of the first embodiment, in the fourth implementation of the first implementation of the embodiment of the present invention, the third subpixel is the B sub It is a pixel, and the first subpixel and the second subpixel are individually one of the R subpixel and the G subpixel.

  Referring to the fourth realization of the first aspect of the embodiment of the present invention, in the fifth realization of the first aspect of the embodiment of the present invention, the first subpixel is an R subpixel, The second subpixel is a G subpixel, and the pixel area of the R subpixel is larger than the pixel area of the G subpixel.

  With reference to the fourth implementation of the first aspect of the embodiment of the present invention, in the sixth implementation of the first aspect of the embodiment of the present invention, the first subpixel is a G subpixel, The second subpixel is an R subpixel, and the pixel area of the R subpixel is larger than the pixel area of the G subpixel.

  With reference to the fourth implementation of the first aspect of the embodiment of the present invention to the sixth implementation of the first aspect, in the seventh implementation of the first aspect of the embodiment of the present invention, The R subpixel, G subpixel, B subpixel, and W subpixel in the pixel use a shared cathode power supply or a shared anode power supply.

  With reference to the fourth implementation of the first aspect of the embodiment of the present invention to the sixth implementation of the first aspect, in the eighth implementation of the first aspect of the embodiment of the present invention, Within the pixel, the R subpixel, the G subpixel, and the B subpixel use a common cathode power source or a common anode power source, and the W subpixel uses another cathode power source or an anode power source.

  With reference to the first implementation of the embodiment of the present invention to the eighth implementation of the first embodiment, in the ninth implementation of the first implementation of the embodiment of the present invention, All quadrant pixels have the same structure.

  From the foregoing technical solution, it can be learned that embodiments of the present invention have the following advantages.

  In the embodiment of the present invention, the first subpixel and the second subpixel have the same width, and the pixel areas of the first subpixel and the second subpixel are the third subpixel and the W subpixel. It is smaller than the pixel area of the pixel. Since the pixel areas of the first subpixel and the second subpixel decrease, the pixel density PPI of the entire display panel increases. Furthermore, since white sub-pixels are added to the panel, power consumption is reduced and service life is extended.

It is the schematic of the Example of the pixel arrangement system in a prior art. It is the schematic of the other Example of the pixel arrangement system in a prior art. It is the schematic of the other Example of the pixel arrangement system in a prior art. FIG. 4 is a schematic diagram of an embodiment of a quarter-type pixel in a display panel according to an embodiment of the present invention. 1 is a schematic view of a slit type deposition mask according to an embodiment of the present invention. 1 is a schematic view of a slot type vapor deposition mask according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quarter-type pixel in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quarter-type pixel in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quarter-type pixel in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quarter-type pixel in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quarter-type pixel in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quarter-type pixel in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quadrature pixel arrangement method in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quadrature pixel arrangement method in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quadrature pixel arrangement method in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quadrature pixel arrangement method in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic view of another embodiment of a quadrature pixel arrangement method in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic diagram of an embodiment of a power supply circuit for a sub-pixel in a quadrant pixel in a display panel according to an embodiment of the present invention. FIG. 6 is a schematic diagram of another embodiment of a power supply circuit for sub-pixels in a quarter-type pixel in a display panel according to an embodiment of the present invention.

  Embodiments of the invention provide a display panel that maintains pixel density while reducing power consumption and extending useful life.

  In order that those skilled in the art may better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

  In the specification, claims and accompanying drawings of the present invention, terms such as “first” and “second” (if any) are intended to distinguish between similar objects. It does not necessarily indicate a specific order or order. It is understood that the data referred to in this way can be exchanged in appropriate circumstances, so that the embodiments of the invention described herein can be implemented in an order other than that shown or described herein. Should be. In addition, the terms “include”, “include” and other variants are meant to cover non-exclusive inclusions, eg, a process, method, system, product or device that includes a list of steps or units. It is not necessarily limited to these units, and may include other units that are not explicitly described or unique to such processes, methods, systems, products or devices.

  The embodiment of the display panel in the embodiment of the present invention includes the following contents.

  The display panel includes a plurality of quarter-type pixels. The quarter-type pixel includes a W sub-pixel (white sub-pixel) and a first sub-pixel, a second sub-pixel, and a third sub-pixel having different colors.

  The first subpixel is adjacent to the second subpixel and is located on the second subpixel, and the first subpixel and the second subpixel have the same width, and the first subpixel has the same width. The combination of the pixel and the second sub-pixel, the third sub-pixel, and the W sub-pixel form a quadrant pixel, and the pixel area of the first sub-pixel and the second sub-pixel is third. Smaller than the pixel area of the sub-pixel and the W sub-pixel.

  As shown in FIG. 4, in this embodiment of the present invention, the first subpixel, the second subpixel, the third subpixel, and the W subpixel in one quadrant pixel in the quadrant pixel. Exists. Each subpixel is a quadrilateral, and each subpixel has a separate organic light emitting component. The organic light emitting component is formed in a corresponding pixel position on the array substrate by using a high-definition metal mask (FMM) and by using a vapor deposition film forming technique.

  Since the opening area of the mask has a lower limit of the standard, a gap is provided between the openings of adjacent pixels to avoid being affected by tolerance in the manufacturing process. It is necessary to In this embodiment of the present invention, adjacent subpixels are subpixels close to each other at the arrangement position. Since the secured gap hardly changes, when the pixel area of the sub-pixel is larger than the pixel area of the other sub-pixel, the light-emitting area of the sub-pixel is also larger than the light-emitting area of the other sub-pixel. Therefore, it can be learned that the light emission areas of the first subpixel and the second subpixel are smaller than the light emission areas of the third subpixel and the W subpixel.

  In this embodiment of the present invention, the arrangement method of the sub-pixel may be an arrangement method such as slit, slot, PenTile or IGNIS. 4A and 4B correspond to a slit type deposition mask and a slot type deposition mask, respectively. 4A and 4B, reference numerals 101 and 103 denote mask cover regions, and vapor deposition region openings 102 and 104 are a slit opening and a slot opening, respectively. FIG. 4A shows a slit type deposition mask. The size of the metal mask corresponding to the slit type vapor deposition mask corresponds to the size of the sub-pixel. The main features of the metal mask opening method are as follows. All subpixels in the same column in the display body share an aperture. The metal mask opening is relatively long. As the size of the display screen increases, the opening length of the metal mask needs to increase accordingly. Non-openings between adjacent openings form a metal stripe.

  Optionally, the combination of the first subpixel and the second subpixel is adjacent to the third subpixel, and the combination of the first subpixel and the second subpixel is the same as the third subpixel. The W subpixel has a length, and is disposed on the upper side, the lower side, the left side, or the right side of the entire structure formed by the first subpixel, the second subpixel, and the third subpixel.

  Optionally, the combination of the first subpixel and the second subpixel may be adjacent to the W subpixel, and the combination of the first subpixel and the second subpixel is the same length as the W subpixel. The third subpixel is arranged on the upper side, lower side, left side, or right side of the entire structure formed by the first subpixel, the second subpixel, and the W subpixel.

  Optionally, the third sub-pixel and the W sub-pixel are arranged horizontally, the third sub-pixel and the W sub-pixel are adjacent on the long side, and the first sub-pixel and the second sub-pixel are The combination is arranged on the upper side, the lower side, the left side, or the right side of the overall structure of the combination of the third subpixel and the W subpixel.

  The first subpixel, the second subpixel, and the third subpixel are individually one of the G subpixel (green subpixel), the B subpixel (blue subpixel), or the R subpixel (red subpixel). But you can.

  Preferably, the third subpixel may be a B subpixel, and the first subpixel and the second subpixel may individually be one of an R subpixel or a G subpixel.

  Regarding the order of luminous efficiency and service life of the R, G and B subpixels, the B subpixel is much smaller than the R subpixel, and the R subpixel is smaller than the G subpixel. The B subpixel has the largest pixel area, the R subpixel has the second largest pixel area, and the G subpixel has the smallest pixel area. In one case, the first subpixel and the second subpixel are individually one of the G subpixel and the R subpixel, the third subpixel is the B subpixel, and the R subpixel The pixel area is larger than the pixel area of the G subpixel, and the W subpixel is disposed on the upper side, the lower side, the left side, or the right side of the entire structure formed by the G subpixel, the B subpixel, and the R subpixel.

  For example, as shown in FIGS. 5, 6, 7, and 8, the first subpixel is an R subpixel, the second subpixel is a G subpixel, and the third subpixel is , B subpixels, and W subpixels are arranged on the upper side, lower side, left side, or right side of the overall structure formed by the R subpixel, the G subpixel, and the B subpixel.

  In some embodiments of the present invention, when the first subpixel is an R subpixel, the second subpixel is a G subpixel, and the third subpixel is a B subpixel, the R subpixel And the combination of the G subpixel may be further adjacent to the W subpixel, the combination of the R subpixel and the G subpixel, and the W subpixel have the same length, and the pixel area of the R subpixel is The B subpixel is arranged on the upper side, the lower side, the left side, or the right side of the entire structure formed by the R subpixel, the G subpixel, and the W subpixel. As shown in FIG. 9, the B subpixel is disposed below the entire structure formed by the R subpixel, the G subpixel, and the W subpixel. This is not limited here.

  In some embodiments of the present invention, if the first subpixel is an R subpixel, the second subpixel is a G subpixel, and the third subpixel is a B subpixel, the B subpixel And the W subpixels are adjacent on the long side, and the combination of the R subpixel and the G subpixel is arranged on the upper side, the lower side, the left side, or the right side of the overall structure of the combination of the B subpixel and the W subpixel. As shown in FIG. 10, the structure of the combination of the R subpixel and the G subpixel is arranged on the left side of the structure of the combination of the B subpixel and the W subpixel. This is not limited here.

  The first subpixel and the second subpixel may be individually one of the G subpixel and the B subpixel, the third subpixel is the R subpixel, and the W subpixel is the first subpixel. It can be seen that it is arranged on the upper, lower, left or right side of the overall structure formed by the pixel, the second subpixel and the third subpixel. For example, the first subpixel is a B subpixel, the second subpixel is a G subpixel, the third subpixel is an R subpixel, the white subpixel is a G subpixel, Arranged below the entire structure formed by the B subpixel and the R subpixel.

  The first subpixel and the second subpixel may individually be one of the R subpixel or the B subpixel, the third subpixel is the G subpixel, and the W subpixel is the first subpixel. It is arranged on the upper side, lower side, left side or right side of the overall structure formed by the pixel, the second sub-pixel and the third sub-pixel. For example, the first subpixel is a B subpixel, the second subpixel is an R subpixel, the third subpixel is a G subpixel, the white subpixel is a G subpixel, Arranged above the entire structure formed by the B subpixel and the R subpixel.

  In this embodiment of the present invention, the first subpixel, the second subpixel, and the third subpixel may be color subpixels other than the R subpixel, the G subpixel, and the B subpixel, for example, the yellow subpixel. It may be a pixel (yellow subpixel), a cyan subpixel (cyan subpixel), and a purple subpixel (purple subpixel). This is not limited here.

  In this embodiment of the present invention, an entire display panel, such as an OLED panel formed by a plurality of quarter-type pixels, has a plurality of arrangement schemes. For example, all of the plurality of quarter-type pixels in the entire display panel have the same structure. As shown in FIGS. 11, 12, and 13, all the white subpixels in the plurality of quadrant pixels are arranged in the same direction such as upward, downward, or rightward. In actual applications, all of the plurality of quarter-type pixels in the overall display panel may be different, and a combination of the plurality of quarter-type pixel arrangement schemes described in the previous embodiments may be used. For example, as shown in FIG. 14, two quadrant pixels with white subpixels on the left side and two quadrant pixels with white subpixels on the right side are arranged to form the entire display panel. Combined. In the actual manufacturing process, the light emission area of the sub-pixel is smaller than the area of the sub-pixel, that is, the actual deposition area of the display panel occupies only a part of the sub-pixel area. As shown in FIG. 15, FIG. 15 is a schematic diagram of a sub-pixel mask arrangement method corresponding to FIG.

  It should be noted that the display panels shown in FIGS. 11 to 14 are merely examples when the structure of the quarter-type pixel is as follows. The first subpixel and the second subpixel are individually one of the G subpixel and the R subpixel, the third subpixel is the B subpixel, and the pixel area of the R subpixel is G The W subpixel is larger than the pixel area of the subpixel, and the W subpixel is disposed below the entire structure formed by the G subpixel, the B subpixel, and the R subpixel. It can also be understood that this is also applicable when the quadrant pixel has a different structure than that described above. For example, a plurality of quadrant pixels with different structures may be arranged in various ways to form a display panel in this embodiment of the invention. This is not limited here.

In the display panel in this embodiment of the invention, the first subpixel, the second subpixel, the third subpixel, and the W subpixel may share a cathode or anode power source. For example, as shown in FIG. 16, when the first subpixel, the second subpixel, and the third subpixel are an R subpixel, a G subpixel, and a B subpixel, respectively, The B subpixel and the W subpixel share an anode power source. In this drawing, V _anode is the anode voltage and V _cathode is the cathode voltage. As the anode power supply, the power supply circuit shown in the drawing may be used, or another anode power supply circuit may be used. This is not limited here.

Since the white subpixel consumes less power than the other color subpixels, power consumption increases when the same amount of power is applied to the white and other subpixels. Thus, preferably, in this embodiment of the invention, the first sub-pixel, the second sub-pixel and the third sub-pixel share a cathode or anode power source and a W sub-pixel to reduce power consumption. The pixel uses a separate cathode or anode power source. For example, as shown in FIG. 17, when the first subpixel, the second subpixel, and the third subpixel are an R subpixel, a G subpixel, and a B subpixel, respectively, And the B sub-pixel share an anode power source, and the W sub-pixel uses a separate anode power source. In this drawing, V _anode is the anode voltage and V _cathode is the cathode voltage. As the anode power supply, the power supply circuit shown in the drawing may be used, or another anode power supply circuit may be used. This is not limited here.

  The foregoing embodiments are merely illustrative for the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will still be able to use the techniques described in the foregoing embodiments without departing from the spirit and scope of the technical solutions of the embodiments of the present invention. It should be understood that changes may be made to the technical solution, or equivalent substitutions may be made to some technical features thereof.

Claims (10)

A plurality of quadrant pixels, wherein the quadrant pixel includes a W subpixel and a plurality of quadrants including a first subpixel, a second subpixel, and a third subpixel having different colors. Including pixels,
The first sub-pixel is adjacent to the second sub-pixel and is positioned on the second sub-pixel, and the first sub-pixel and the second sub-pixel have the same width. , The combination of the first subpixel and the second subpixel, the third subpixel, and the W subpixel form the quadrant pixel, and the first subpixel and the The display panel having a pixel area of the second subpixel smaller than that of the third subpixel and the W subpixel.   The combination of the first subpixel and the second subpixel is adjacent to the third subpixel, and the combination of the first subpixel and the second subpixel is the third subpixel. The W sub-pixel has the same length as the sub-pixel, and the W sub-pixel is an upper side, a lower side, a left side, or a left side of an entire structure formed by the first sub-pixel, the second sub-pixel, and the third sub-pixel. The display panel according to claim 1, which is arranged on the right side.   The combination of the first subpixel and the second subpixel is adjacent to the W subpixel, and the combination of the first subpixel and the second subpixel is the same as the W subpixel. The third subpixel has a length, and is disposed on an upper side, a lower side, a left side, or a right side of an entire structure formed by the first subpixel, the second subpixel, and the W subpixel. The display panel according to claim 1.   The third subpixel and the W subpixel are arranged in a horizontal direction, the third subpixel and the W subpixel are adjacent on a long side, and the first subpixel and the second subpixel are adjacent to each other. The display panel according to claim 1, wherein the combination of pixels is arranged on an upper side, a lower side, a left side, or a right side of an overall structure of the combination of the third subpixel and the W subpixel.   The third subpixel is a B subpixel, and the first subpixel and the second subpixel are individually one of an R subpixel or a G subpixel. The display panel according to any one of the above.   The first subpixel is the R subpixel, the second subpixel is the G subpixel, and the pixel area of the R subpixel is larger than the pixel area of the G subpixel. Display panel as described.   The first subpixel is the G subpixel, the second subpixel is the R subpixel, and the pixel area of the R subpixel is larger than the pixel area of the G subpixel. Display panel as described.   The R subpixel, the G subpixel, the B subpixel, and the W subpixel in the quadrant pixel use a shared cathode power supply or a shared anode power supply, respectively. Display panel according to.   Within the quadrant pixel, the R subpixel, the G subpixel, and the B subpixel use a shared cathode power supply or a shared anode power supply, and the W subpixel uses another cathode power supply or an anode power supply. A display panel according to any one of claims 5 to 7.   10. The display panel according to claim 1, wherein all of the quarter-type pixels in the plurality of quarter-type pixels have the same structure.

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