TWI810725B - Display panel and method for driving same - Google Patents

Abstract

Embodiments of the present disclosure provide a display panel and a method for driving the display panel. The display panel includes a plurality of pixels. Each pixel includes a plurality of main sub-pixels and a standby sub-pixel. The standby sub-pixel is used for cooperating with the non-disabled main sub-pixels to emit light when there is a disabled main sub-pixel in the pixel to which the standby sub-pixel belongs, so that the pixel outputs metamerism light of a target color.

Description

Display panel and driving method thereof

The present invention relates to the field of display technology, in particular to a display panel and a driving method thereof.

The repair of failed light-emitting elements in self-luminous display panels is critical to improving their yield. At present, a repairing method of the self-luminous display panel is to directly remove the failed light-emitting element, and pick up a qualified light-emitting element again for replacement. However, due to the small size of the light-emitting element (such as micron scale), repairing is difficult and takes a lot of time. In addition, it can also be repaired by designing a spare light-emitting element for each light-emitting element. When the original light-emitting element fails, the standby light-emitting element is activated to work. However, this way causes a sharp increase in the number of light emitting elements in the display panel, and correspondingly increases the cost.

The first aspect of the present invention provides a display panel, which includes a plurality of pixels, including a plurality of pixels, each of which includes a plurality of main sub-pixels and a spare sub-pixel; wherein, the spare sub-pixel is When there is a failed main sub-pixel in the pixel to which it belongs, it cooperates with the non-failed main sub-pixel to emit light, so that the pixel outputs the light of the target color metamerism.

The display panel utilizes the phenomenon of metamerism, by adjusting the output result of the spectrum of the pixel, so that no matter whether there is a failed main sub-pixel in each pixel, human eyes perceive the same color. In this way, compared with directly removing a failed light-emitting element and re-picking a qualified light-emitting element for replacement, the difficulty of repairing is reduced without consuming a lot of time. In addition, compared with the method of preparing a spare light-emitting element for each light-emitting element, the display panel relatively reduces the number of light-emitting elements and reduces the cost.

The second aspect of the present invention provides a driving method of a display panel, the display panel includes a plurality of pixels, each of which includes a plurality of main sub-pixels and a spare sub-pixel, the driving method of the display panel includes : Detect whether there is a failed main sub-pixel in each of the pixels; To emit light, the plurality of main sub-pixels cooperate to emit light, so that the pixels output the target color; if there is an invalid main sub-pixel, the spare sub-pixel cooperates with the non-ineffective main sub-pixel The pixels emit light such that the pixels output light of a metameric color of the target color.

The driving method of the display panel utilizes the phenomenon of metamerism, by adjusting the output result of the spectrum of the pixel, so that no matter whether there is a failed main sub-pixel in each pixel, human eyes perceive it as the same color . In this way, compared with directly removing a failed light-emitting element and re-picking a qualified light-emitting element for replacement, the difficulty of repairing is reduced without consuming a lot of time. In addition, compared with the method of preparing a spare light-emitting element for each light-emitting element, the display panel relatively reduces the number of light-emitting elements and reduces the cost.

100, 200: display panel

P: pixel

D1: the first direction

D2: Second direction

10: The main sub-pixel

12. R: red sub-pixel

14. G: Green sub-pixel

16. B: Blue sub-pixel

20. W: spare sub-pixel

22: spare light emitting element

24: Color conversion layer

262: red conversion block

264: green conversion block

266: blue conversion block

T: target output spectral distribution curve

S1, S2, S3: steps

FIG. 1 is a schematic diagram of pixel arrangement of a display panel according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a spare sub-pixel in FIG. 1 .

FIG. 3 is a schematic diagram of a spectral output curve of a pixel in FIG. 1 .

FIG. 4 is a schematic diagram of pixel arrangement of a display panel according to another embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a spare sub-pixel in FIG. 4 .

FIG. 6 is a schematic diagram of a spectral output curve of a pixel in FIG. 4 .

FIG. 7 is a schematic flowchart of a driving method of a display panel according to an embodiment of the present invention.

The method of adjusting two colors to have the same visual perception is called color matching. In the color matching experiment, the values of the three primary colors required to achieve color matching with the color to be tested are called tri-stimulus values. The International Commission on Illumination (CIE) proposed the CIE 1931 XYZ system, which uses three imaginary primary colors X, Y, and Z to establish a new chromaticity system. Among them, the CIE 1931 XYZ system is suitable for viewing angles of 1°-4°. In order to meet the needs of large-field color measurement, CIE proposed the CIE 1964 supplementary standard chromaticity system in 1964. ° Observation tests performed on the field of view. The conversion of the color that the human eye can feel into digits is the XYZ tri-stimulus value, and the XYZ tri-stimulus value is superimposed by the reflection spectrum of the object, the illumination spectral curve and the CIE standard observer spectral tri-stimulus value curve. Wherein, human eyes perceive the same two colors (that is, the same tristimulus value), and their spectral distributions may be the same or different. The phenomenon that the spectral composition is different, but for a specific illuminant and a specific standard observer, gives people exactly the same color perception is called metamerism, and such two colors are called metamerism. That is, metamerism is a color that has different spectral distributions but the same tristimulus value for a particular standard observer and a particular illuminant.

FIG. 1 is a schematic diagram of an arrangement of pixels P of a display panel 100 according to an embodiment of the present invention. As shown in FIG. 1 , the display panel 100 includes a plurality of pixels P. As shown in FIG. Each pixel P includes a plurality of main sub-pixels 10 and a spare sub-pixel 20 . For each of the pixels P, if there is no failed main sub-pixel 10, the spare sub-pixel 20 does not emit light, and the plurality of main sub-pixels 10 cooperate to emit light, so that all The pixel P outputs the target color; if there is a failed main sub-pixel 10, the spare sub-pixel 20 cooperates with the non-failed main sub-pixel 10 to emit light, so that the pixel P outputs the Light that is the metameric color of the target color.

The display panel 100 utilizes the phenomenon of metamerism, by adjusting the output result of the spectrum of the pixel P, so that no matter whether there is a failed main sub-pixel 10 in each pixel P, human eyes perceive the same color . In this way, compared with directly removing a failed light-emitting element and re-picking a qualified light-emitting element for replacement, the difficulty of repairing is reduced without consuming a lot of time. In addition, compared with the method of preparing a spare light-emitting element for each light-emitting element, the display panel 100 relatively reduces the number of light-emitting elements and reduces the cost.

Please continue to refer to FIG. 1 , the plurality of pixels P are arranged in a plurality of columns along the first direction D1 , and arranged in a plurality of rows in the second direction D2 . The first direction D1 intersects the second direction D2. In FIG. 1 , the first direction D1 is perpendicular to the second direction D2. Each pixel P includes three main sub-pixels 10 and one spare sub-pixel 20 . The three main sub-pixels 10 are a red sub-pixel 12 for emitting red light, a green sub-pixel 14 for emitting green light, and a blue sub-pixel 16 for emitting blue light. The red sub-pixel 12 , green sub-pixel 14 , blue sub-pixel 16 and spare sub-pixel 20 in each pixel P are arranged in a 2×2 matrix. Among them, a red sub-pixel 12 and a green sub-pixel 14 are arranged in the first row of each pixel P, and a blue sub-pixel 16 and a spare sub-pixel are arranged in the second row of each pixel P Prime 20. The arrangement of the plural pixels P is a row of a red sub-pixel 12 and a green sub-pixel 14 alternating periodically The arrangement is repeated, and the other row is alternately and periodically repeated arrangement of a blue sub-pixel 16 and a spare sub-pixel 20 . The arrangement of the plural pixels P is a red sub-pixel 12 and a blue sub-pixel 16 alternately and periodically repeated arrangement, and another row is a green sub-pixel 14 and a spare sub-pixel 20 alternately and periodically Repeat arrangement.

In other embodiments, the arrangement of the above-mentioned main sub-pixels 10 and backup sub-pixels 20 is not limited to that shown in FIG. 1 , and can also be adjusted as required, as long as the arrangement is guaranteed to be in a 2×2 matrix. In addition, each pixel P is not limited to include the main sub-pixels 10 of the above three colors, and may also include main sub-pixels 10 that emit light of other colors, for example, white sub-pixels that emit white light, yellow sub-pixels that emit light, etc. yellow sub-pixels, cyan sub-pixels that emit cyan light, etc.

In some embodiments, the number of active sub-pixels 10 and backup sub-pixels 20 in a pixel P is not limited to that shown in FIG. 1 , and their arrangement is not limited to a 2×2 matrix arrangement. For example, it may contain 6 sub-pixels arranged in a 2×3 arrangement or a 3×2 arrangement.

In some embodiments, the main sub-pixel 10 includes a main light-emitting element (not shown in the figure) and a color conversion layer 24 located on the light-emitting side of the main light-emitting element. The light emitted by the main light-emitting element is converted into a desired color after passing through the color conversion layer 24 . For example, the main light-emitting element is an inorganic light-emitting diode emitting blue light or an organic light-emitting diode emitting blue light, and the material of the color conversion layer 24 is quantum dots or phosphor powder. The material of the corresponding color conversion layer 24 in the red sub-pixel 12 converts the blue light emitted by the main light-emitting element into red, and the corresponding material of the color conversion layer 24 in the green sub-pixel 14 converts the blue light emitted by the main light-emitting element into The material of the corresponding color conversion layer 24 in the green and blue sub-pixels 16 converts the blue light emitted by the main light-emitting element into blue with a required wavelength.

In other embodiments, the main sub-pixel 10 does not include the color conversion layer 24 . For example, the red sub-pixel 12 includes an inorganic light-emitting diode that emits red light, the green sub-pixel 14 includes an inorganic light-emitting diode that emits green light, and the blue sub-pixel 16 includes an inorganic light-emitting diode that emits blue light.

As shown in FIG. 2 , the spare sub-pixel 20 includes a spare light-emitting element 22 emitting blue light and a color conversion layer 24 . The color conversion layer 24 is located on the light emitting side of the spare light emitting element 22 for converting the blue light emitted by the spare light emitting element 22 into white light. The display panel 100 enables the pixel P to output the metameric light of the target color by adjusting the spectral intensity of the white light converted from the blue light. Wherein, the spare light-emitting element 22 can be an inorganic light-emitting diode emitting blue light or an organic light-emitting diode emitting blue light, and the material of the color conversion layer 24 is quantum dots or phosphor powder. In other embodiments, the spare sub-pixel 20 is not limited to a sub-pixel that emits white light, and it can also be a sub-pixel that emits light of other colors, for example, a yellow sub-pixel that emits yellow light, a sub-pixel that emits blue light Cyan sub-pixel, etc.

In some embodiments, both the main sub-pixel 10 and the backup sub-pixel 20 include the color conversion layer 24 , and the type of the color conversion layer 24 is the same, and the types of the main light-emitting element and the backup light-emitting element 22 are the same. For example, in the main sub-pixel 10 and the standby sub-pixel 20, the color conversion layer 24 is made of quantum dot material or phosphor; the main light-emitting element and the standby light-emitting element 22 are both inorganic light-emitting diodes or phosphor It is an organic light-emitting diode, which is convenient for preparation.

In some embodiments, the size of the above-mentioned inorganic light emitting diodes or organic light emitting diodes is less than 100 microns. That is, the light-emitting elements in the main sub-pixel 10 and the backup sub-pixel 20 are miniature light-emitting diodes or micro-organic light-emitting diodes. Among them, the display panel 100 using micro-LEDs as light-emitting elements has the characteristics of high resolution, low power consumption, high luminance, high contrast, high color saturation, fast response, thin thickness, and long life.

Compared with the method of preparing a spare light-emitting element for each light-emitting element, the display panel 100 relatively reduces the number of light-emitting elements, which can reduce the area of the driving circuit, improve the yield rate, and reduce the cost. In addition, it should be noted that the repair of known light-emitting elements (such as miniature light-emitting diodes) (such as ultraviolet irradiation repair technology, laser fusing repair technology, selective pick-up repair technology, selective laser repair technology, etc.) ) includes at least a de-bonding process for removing the micro light emitting diodes from the substrate, a cleaning process, a bonding process for fixing the micro light emitting diodes on the substrate, etc., and the display panel 100 of the present application utilizes metamerism The phenomenon, by adjusting the output result of the spectrum of the pixel P, no matter whether there is a failed main sub-pixel 10 in each pixel P, the human eyes perceive the same color, without the need for secondary transfer and repair, which simplifies The repairing process greatly reduces the repairing cost of light-emitting elements (eg, miniature light-emitting diodes).

In FIG. 3 , it is illustrated by taking a pixel P including a red sub-pixel 12 , a green sub-pixel 14 , a blue sub-pixel 16 and a spare sub-pixel 20 emitting white light as an example. In FIG. 3 , the curve marked "T" is the target output spectral distribution curve. Marked as "R", "G", "B", and "W" are the actual output spectral power of the red sub-pixel 12, green sub-pixel 14, blue sub-pixel 16 and spare sub-pixel 20 respectively distribution curve. In FIG. 3 , the horizontal axis indicates wavelength, and the vertical axis indicates spectral intensity.

In (a), (b) and (c) of FIG. 3 , the failed main sub-pixels 10 are blue sub-pixel 16 , green sub-pixel 14 and red sub-pixel 12 respectively. In Figure (d) of Figure 3, the three main sub-pixels 10 are common sub-pixels capable of emitting light normally, that is, for the pixel P shown in Figure (d) of Figure 3, the standby The sub-pixel 20 does not emit light, and the three main sub-pixels 10 emit light, so that the pixel P outputs its target color. For the pixels P shown in (a), (b) and (c) in Figure 3, there is an invalid sub-pixel, or a main sub-pixel that cannot work normally. painting Pixel 10, also known as the master sub-pixel 10 with one fault, also known as having one dead pixel. At this time, the failed sub-pixel does not emit light, and the spare sub-pixel 20 cooperates with the remaining unfailed main sub-pixels 10 to emit light, so that the pixel P outputs light of the metameric color of the target color.

Specifically, in Figure 3 (a), the blue sub-pixel 16 is a dead pixel, the blue sub-pixel 16 does not emit light, the red sub-pixel 12, the green sub-pixel 14 and the spare sub-pixel that emit white light 20 emits light so that the pixel P outputs light of the metameric color of its target color. That is to say, although the spectral distributions in (a) and (d) of FIG. 3 are different for a specific standard observer and a specific illuminant, they give people exactly the same color perception (that is, have the same tristimulus value). Similarly, the green sub-pixel 14 in (b) of Fig. 3 is a dead pixel, the green sub-pixel 14 does not emit light, and the blue sub-pixel 16, red sub-pixel 12, and white-emitting spare sub-pixel 20 emit light , so that the pixel P outputs light of the metameric color of its target color. Among Fig. 3 (c), the red sub-pixel 12 is a dead pixel, the red sub-pixel 12 does not emit light, and the blue sub-pixel 16, the green sub-pixel 14, and the spare sub-pixel 20 that emit white light emit light, so that The pixel P outputs light of the metameric color of its target color. That is, in Fig. 3, although the spectral distributions of the illustrated pixel P are different in (a), (b), (c) and (d), the spectra output by the pixel P have the same three Stimulus value, the human eye perceives as the same color.

It should be noted that, in FIG. 3, one pixel P has one dead pixel as an example. When a pixel P has more than two dead pixels, it can still be adjusted by adjusting the spectral power distribution of the spare sub-pixel 20. , cooperate with the non-deactivated main sub-pixels 10 to output the metameric light of the target color.

In addition, the display panel 100 can adjust the spectral intensity of the white light emitted by the spare sub-pixel 20 as a whole, so that the pixel P can output the metameric light of its target color. That is, by directly adjusting the spectral output results of pixels P with dead pixels, for the standard human eye spectral sensitivity spectrum (also known as CIE The standard observer spectral tristimulus value curve) is adjusted, which is equivalent to directly adjusting the pixel P to obtain the target XYZ tristimulus value, which improves the product yield.

In addition, the display panel 100 also includes a driving substrate (not shown in the figure), on which the above-mentioned main light-emitting element and backup light-emitting element 22 are arranged, and electrically connected to the driving substrate, so that under the control of the driving substrate glow. The driving substrate is, for example, a thin film transistor substrate. In addition, the display panel 100 further includes a controller (not shown in the figure) to control the pixels P to display with the target color or a metameric color of the target color.

FIG. 4 is a schematic diagram of an arrangement of pixels P of a display panel 200 according to another embodiment of the present invention, which is different from the embodiment shown in FIG. 1 in the structure of the spare sub-pixel 20 . In FIG. 4 , the spare sub-pixel 20 emits one of the three primary colors (red light, green light, blue light), a combination of any two of the three primary colors, and white light of the three primary colors.

As shown in FIG. 5 , the spare sub-pixel 20 includes three spare light-emitting elements 22 emitting blue light and a red conversion block 262 , a green conversion block 264 and a blue conversion block 266 . The red conversion block 262, the green conversion block 264 and the blue conversion block 266 are respectively located on the light-emitting side of the three spare light-emitting elements 22, for converting the blue light emitted by the corresponding light-emitting elements into red light and green light. and Blu-ray. The display panel 200 independently adjusts the spectral power distribution of the red light converted from the blue light, the spectral power distribution of the green light converted from the blue light, and the spectral power distribution of the blue light converted from the blue light to make the picture The pixel P outputs light of a metameric color of the target color. In this embodiment, since the spectral power distribution of each primary color light (red, green, blue) in each pixel P can be adjusted independently, the restoration process is more flexible.

4, it can be seen that the red conversion block 262, the green conversion block 264, and the blue conversion block 266 are arranged in sequence along the first direction D1, and the size of the spare sub-pixel 20 is roughly equivalent to that of the main sub-pixel 10, and each Each blue-emitting spare light-emitting element 22 and the color conversion blocks above it (such as the red conversion block 262 , the green conversion block 264 and the blue conversion block 266 ) are approximately the same in size. The material of the red conversion block 262 , the green conversion block 264 and the blue conversion block 266 is, for example, quantum dot material or phosphor.

In Fig. 6, take a pixel P including a red sub-pixel 12, a green sub-pixel 14, a blue sub-pixel 16 and a spare sub-pixel 20 shown in Fig. 4 and Fig. 5 as an example. illustrate. In FIG. 3 , the curve marked "T" is the target output spectral distribution curve. Marked as "R", "G", "B", and "W" are the actual output spectral power of the red sub-pixel 12, green sub-pixel 14, blue sub-pixel 16 and spare sub-pixel 20 respectively distribution curve.

In (a), (b) and (c) of FIG. 6 , the failed main sub-pixels 10 are blue sub-pixel 16 , green sub-pixel 14 and red sub-pixel 12 respectively. In (d) of FIG. 6, the three main sub-pixels 10 are ordinary sub-pixels capable of emitting light normally, that is, for the pixel P shown in (d) of FIG. 6, the standby The sub-pixel 20 does not emit light, and the three main sub-pixels 10 emit light, so that the pixel P outputs its target color. However, for the pixel P shown in (a), (b) and (c) in FIG. 6 , there is one failed sub-pixel. At this time, the failed sub-pixel does not emit light, and the spare sub-pixel 20 cooperates with the remaining unfailed main sub-pixels 10 to emit light, so that the pixel P outputs light of the metameric color of the target color.

Specifically, in Figure 6 (a), the blue sub-pixel 16 is a dead pixel, the blue sub-pixel 16 does not emit light, and the red sub-pixel 12, green sub-pixel 14 and spare sub-pixel 20 emit light. To make the pixel P output light of the metameric color of its target color. That is to say, although the spectral distributions in (a) and (d) of FIG. 6 are different for a specific standard observer and a specific illuminant, they give people exactly the same color perception (that is, have the same tristimulus value). Similarly, the green sub-pixel 14 in (b) of FIG. To make the pixel P output light of the metameric color of its target color. In Fig. 6 (c), the red sub-pixel 12 is a dead pixel, the red sub-pixel 12 does not emit light, and the blue sub-pixel 16, green sub-pixel 14, and spare sub-pixel 20 emit light, so that the pixel P outputs light that is a metameric color of its target color. That is, in Fig. 6, although the spectral distributions of the pixel P shown in (a), (b), (c) and (d) are different, the spectrum output by the pixel P has the same three Stimulus value, the human eye perceives as the same color.

It should be noted that in FIG. 6, one pixel P has one dead pixel as an example. When a pixel P has more than two dead pixels, it can still be adjusted by adjusting the spectral power distribution of the spare sub-pixel 20. , cooperate with the non-deactivated main sub-pixels 10 to output the metameric light of the target color.

In addition, although “W” is marked in FIG. 6 , the light emitted by the sub-pixel 20 is not necessarily white light, but may be one of the three primary colors (red, green, blue) or any two of the three primary colors. Combination and white light of three primary colors. The display panel 200 independently adjusts the spectral power distribution of red light converted from blue light, the spectral power distribution of green light converted from blue light, and the spectral power distribution of blue light converted from blue light in the spare sub-pixel 20 to make the picture The pixel P outputs light of a metameric color of the target color. That is, by directly adjusting the spectral output result of the pixel P with a bad pixel, the adjustment to the standard human eye spectral sensitivity spectrum (also known as the CIE standard observer spectral tristimulus value curve) is equivalent to directly adjusting the pixel P The target XYZ tristimulus value is obtained, which improves the product yield.

In some embodiments, the display panel 100 and the display panel 200 further include a color filter layer (not shown in the figure), so as to make the chromaticity uniformity of the output from the main sub-pixel 10 or the backup sub-pixel 20 better. For example, if the main sub-pixel 10 is a light-emitting element that emits red light, a light-emitting element that emits green light, and a light-emitting element that emits blue light, the color filter layer includes red color film color blocks and green color film color blocks corresponding thereto. color block and blue color film color block. The red color film color block can pass the red light of the required band, and filter out other unwanted bands. Correspondingly, the green color film color block can pass the green light of the required band, and filter out other undesired wavelengths. Hope to use the band. The blue color filter block can pass the blue light of the required band, and filter out other unwanted bands. In addition, when the main sub-pixel 10 includes the color conversion layer 24 , the color filter layer is located on the side of the color conversion layer 24 away from the main light-emitting element. Similarly, when the spare sub-pixel 20 includes a color conversion block, the color filter layer is located on a side of the color conversion block away from the spare light emitting element 22 .

FIG. 7 is a schematic flowchart of a driving method of a display panel according to an embodiment of the present invention. The display panel includes a plurality of pixels, and each pixel includes a plurality of main sub-pixels and a spare sub-pixel. The driving method of the display panel includes the following steps.

Step S1: Detect whether there is a failed main sub-pixel in each of the pixels. For each pixel, if there is no failed main sub-pixel, then execute step S3; otherwise, execute step S2.

Step S2: The spare sub-pixel cooperates with the active sub-pixel to emit light, so that the pixel outputs light of the metameric color of the target color.

Step S3: The spare sub-pixels do not emit light, and the plurality of main sub-pixels cooperate to emit light, so that the pixels output a target color.

In step S1, if a pixel with a bad pixel is detected, recording the pixel with a bad pixel in a lookup table is also included. When step S2 is executed, the spare sub-pixels among the pixels recorded in the look-up data table emit light.

In step S1, if no pixel P with a bad pixel is detected, then step S2 is not executed, and among all pixels P, the spare sub-pixel 20 does not emit light, and each pixel P outputs its target color .

In some embodiments, the spare sub-pixel includes a blue-emitting spare light-emitting element and a color conversion layer. The color conversion layer is located on the light emitting side of the spare light emitting element, and is used for converting the blue light emitted by the spare light emitting element into white light. In step S2, the display panel is adjusted by The spectral power distribution of the white light converted from the blue light makes the pixel output light of the metameric color of the target color.

In some embodiments, the spare sub-pixels include three spare light-emitting elements that emit blue light and a red conversion block, a green conversion block, and a blue conversion block. The red conversion block, the green conversion block and the blue conversion block are respectively located on the light output side of the three spare light-emitting elements for converting the blue light emitted by the corresponding spare light-emitting elements into red light, green light and blue light. In step S2, the display panel independently adjusts the spectral power distribution of the red light converted from the blue light, the spectral power distribution of the green light converted from the blue light, and the spectral power distribution of the blue light converted from the blue light so that The pixels output light of the metameric color of the target color.

The driving method of the display panel utilizes the phenomenon of metamerism, by adjusting the output result of the spectrum of the pixel, so that no matter whether there is a failed main sub-pixel in each pixel, human eyes perceive it as the same color . In this way, compared with directly removing a failed light-emitting element and re-picking a qualified light-emitting element for replacement, the difficulty of repairing is reduced without consuming a lot of time. In addition, compared with the method of preparing a spare light-emitting element for each light-emitting element, the display panel relatively reduces the number of light-emitting elements and reduces the cost. Moreover, products with high and low brightness specifications can also be provided according to whether there are dead pixels in the pixels. In this way, the original defective product does not need to be scrapped, and it can still be sold.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention.

100: display panel

P: pixel

D1: the first direction

D2: Second direction

10: The main sub-pixel

12: Red sub-pixel

14: Green sub-pixel

16: blue sub-pixel

20: Spare sub-pixels

Claims (10)

A display panel, which is improved in that it includes a plurality of pixels, each of which includes a plurality of main sub-pixels emitting different colors of light and a spare sub-pixel; wherein, the spare sub-pixel is used in its When any one of the main sub-pixels in the corresponding pixels fails, it cooperates with the non-failed main sub-pixels to emit light, so that the pixels output the light of the metameric color of the target color. The display panel according to claim 1, wherein the spare sub-pixel includes: a spare light-emitting element emitting blue light; and a color conversion layer, located on the light-emitting side of the spare light-emitting element, for converting the light-emitting The blue light emitted by the element is converted to white light. The display panel according to claim 2, wherein the display panel enables the pixels to output light of the metameric color of the target color by adjusting the spectral intensity of the white light converted from the blue light. The display panel according to claim 1, wherein the spare sub-pixels include: three spare light-emitting elements emitting blue light; and a red conversion block, a green conversion block, and a blue conversion block, respectively located in the three spare The light-emitting side of the light-emitting element is used to convert the blue light emitted by the corresponding light-emitting element into red light, green light and blue light. The display panel according to claim 4, wherein the display panel independently adjusts the spectral power distribution of the red light converted from the blue light, the spectral power distribution of the green light converted from the blue light, and the blue light conversion The spectral power distribution of the emitted blue light causes the pixel to output light of the metameric color of the target color. The display panel according to any one of claims 2 to 5, wherein the plurality of main sub-pixels includes a red sub-pixel, a green sub-pixel and a blue sub-pixel. The display panel according to claim 6, wherein each of the main sub-pixels includes a main light-emitting element, and both the main light-emitting element and the backup light-emitting element are inorganic light-emitting diodes or the Both the main light-emitting element and the backup light-emitting element are organic light-emitting diodes. A method for driving a display panel, wherein the display panel includes a plurality of pixels, each of which includes a plurality of main sub-pixels emitting different colors of light and a spare sub-pixel, wherein the method for driving the display panel Including: detecting whether there is a failed main sub-pixel in each pixel; and for each pixel, if there is no failed main sub-pixel, the standby sub-pixel No light, the plurality of main sub-pixels cooperate to emit light, so that the pixel outputs the target color; if any one of the main sub-pixels fails, the spare sub-pixels cooperate with all non-failed The main sub-pixel emits light, so that the pixel outputs light of the metameric color of the target color. The driving method of the display panel according to claim 8, wherein the spare sub-pixel includes: a spare light-emitting element that emits blue light; and a color conversion layer, located on the light-emitting side of the spare light-emitting element, for The blue light emitted by the spare light-emitting element is converted into white light; wherein, the display panel makes the pixels output metameric light of the target color by adjusting the spectral power distribution of the white light converted from the blue light. The driving method of the display panel as claimed in item 8, wherein the spare sub-pixels include: Three spare light-emitting elements that emit blue light; and a red conversion block, a green conversion block, and a blue conversion block, which are respectively located on the light-emitting side of the three spare light-emitting elements, and are used to emit light from the corresponding spare light-emitting elements. The blue light is converted into red light, green light and blue light; wherein, the display panel independently adjusts the spectral power distribution of the red light converted from the blue light, the spectral power distribution of the green light converted from the blue light, and the blue light The spectral power distribution of the converted blue light causes the pixel to output light of the metameric color of the target color.