Display panel, display panel control method, and display device

Abstract

The present application discloses a display panel, a display panel control method, and a display device. The display panel includes a substrate; a pixel driving circuit, which is provided on the substrate, and the pixel driving circuit includes a plurality of driving sub-circuits; a pixel layer, which is provided on the substrate, and the pixel layer includes pixel units arranged in an array, and the pixel units include red pixels, green pixels, first blue pixels, and second blue pixels. Each driving sub-circuit corresponds to each color pixel one by one, and the driving sub-circuit is used to drive the corresponding color pixel to light up, and the light transmission band of the first blue pixel is different from the light transmission band of the second blue pixel; in a first display mode, the pixel driving circuit drives the red pixel, the green pixel, and the first blue pixel to light up; or, in a second display mode, the pixel driving circuit drives the red pixel, the green pixel, and the second blue pixel to light up. The present application realizes switching between different modes by setting different types of blue pixels and adjusting the lighting of different blue pixels.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel, a display panel control method, and a display device. Background Art

[0002] Quantum dot (QD) displays have gradually become another high-end display after OLED due to their advantages such as ultra-high contrast, wide color gamut, and wide viewing angle. Currently, TVs and monitors that use quantum dot materials are all defined as high-end products by various manufacturers. In particular, the wide color gamut advantage of quantum dot display technology is the display technology that is closest to the BT.2020 color gamut standard among all display technologies so far. Although the QD light-emitting principles of different manufacturers are different, all of them use quantum dot materials. However, on the other hand, with more and more display applications and longer and longer usage time, this is not good for the health of the human eye. In particular, QD blue light materials have high color purity and can achieve deep blue light emission (short wavelength), which may contain harmful blue light components. Therefore, there is an urgent need for a display panel that can take into account both display performance (wide color gamut) and eye protection requirements (low blue light). Summary of the Invention

[0003] Embodiments of the present application provide a display panel, a display panel control method, and a display device, which realize switching between different modes by setting different types of blue pixels and adjusting the lighting of different blue pixels.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising:

[0005] substrate;

[0006] A pixel driving circuit is provided on the substrate, wherein the pixel driving circuit includes a plurality of driving sub-circuits;

[0007] a pixel layer disposed on the substrate, the pixel layer including pixel units arranged in an array, the pixel units including a red pixel, a green pixel, a first blue pixel, and a second blue pixel; each driving subcircuit corresponds to each color pixel one-to-one, the driving subcircuit being configured to drive the corresponding color pixel to light up, the light transmission band of the first blue pixel being different from the light transmission band of the second blue pixel;

[0008] In the first display mode, the pixel driving circuit drives the light sources corresponding to the red pixel, the green pixel and the first blue pixel to light up; or, in the second display mode, the pixel driving circuit drives the light sources corresponding to the red pixel, the green pixel and the second blue pixel to light up.

[0009] In some embodiments, the second color gamut range of the second display mode is larger than the first color gamut range of the first display mode.

[0010] In some embodiments, the allowed transmission wavelength of the first blue pixel is greater than 400 nm.

[0011] In some embodiments, the irradiance of the blue light corresponding to the wavelength within the preset intensity range of the allowed transmission wavelength is less than or equal to 20% of the irradiance of the blue light corresponding to the allowed transmission wavelength.

[0012] In some embodiments, the ratio of the energy of the blue light in the range of 415 nm to 455 nm to the energy of the blue light in the range of 400 nm to 500 nm in the allowed transmittance wavelength is less than or equal to a preset threshold.

[0013] In some embodiments, the wavelength corresponding to the intensity extreme value of the transmission band of the second blue pixel is less than 450 nm.

[0014] In some embodiments, the material of the pixel layer is quantum dots.

[0015] In a second aspect, the present application provides a display panel control method, applied to any of the display panels described above, comprising:

[0016] Obtaining color coordinates of each pixel unit in a picture to be displayed, each of the pixel units including a red pixel, a green pixel, a first blue pixel, and a second blue pixel;

[0017] If the color coordinates all belong to the first color gamut range of the first display mode, lighting up the red pixel, the green pixel, and the first blue pixel corresponding to the first display mode;

[0018] If a certain color coordinate does not belong to the first color gamut range of the first display mode but belongs to the second color gamut range of the second display mode, the red pixel, the green pixel and the second blue pixel corresponding to the second display mode are lit.

[0019] In some embodiments, before obtaining the color coordinates of each pixel in the image to be displayed, the method includes:

[0020] Acquire optical parameters of the red pixel, the green pixel, the first blue pixel, and the second blue pixel;

[0021] The first color gamut range and the second color gamut range are determined according to the optical parameters, and the second color gamut range is larger than the first color gamut range.

[0022] In a third aspect, the present application provides a display device, comprising any one of the display panels described above.

[0023] In some embodiments, the display panel includes:

[0024] substrate;

[0025] A pixel driving circuit is provided on the substrate, wherein the pixel driving circuit includes a plurality of driving sub-circuits;

[0026] a pixel layer disposed on the substrate, the pixel layer including pixel units arranged in an array, the pixel units including a red pixel, a green pixel, a first blue pixel, and a second blue pixel; each driving subcircuit corresponds to each color pixel one-to-one, the driving subcircuit being configured to drive the corresponding color pixel to light up, the light transmission band of the first blue pixel being different from the light transmission band of the second blue pixel;

[0027] In the first display mode, the pixel driving circuit drives the light sources corresponding to the red pixel, the green pixel and the first blue pixel to light up; or, in the second display mode, the pixel driving circuit drives the light sources corresponding to the red pixel, the green pixel and the second blue pixel to light up.

[0028] In some embodiments, the second color gamut range of the second display mode is larger than the first color gamut range of the first display mode.

[0029] In some embodiments, the allowed transmission wavelength of the first blue pixel is greater than 400 nm.

[0030] In some embodiments, the irradiance of the blue light corresponding to the wavelength within the preset intensity range of the allowed transmission wavelength is less than or equal to 20% of the irradiance of the blue light corresponding to the allowed transmission wavelength.

[0031] In some embodiments, the ratio of the energy of the blue light in the range of 415 nm to 455 nm to the energy of the blue light in the range of 400 nm to 500 nm in the allowed transmittance wavelength is less than or equal to a preset threshold.

[0032] In some embodiments, the wavelength corresponding to the intensity extreme value of the transmission band of the second blue pixel is less than 450 nm.

[0033] In some embodiments, the material of the pixel layer is quantum dots.

[0034] The display panel, display panel control method and display device provided in the embodiments of the present application are provided with different types of blue pixels. The blue pixels coordinated with the red pixels and the green pixels in different display modes have different light transmission bands. That is, by adjusting and lighting different blue pixels, switching between different modes is achieved, so that the same display panel can achieve different display requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0036] Figure 1 This is a schematic structural diagram of a display panel in one embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the color gamut range of a display panel in one embodiment of the present application;

[0038] Figure 3 1 is a wavelength-light intensity correspondence diagram corresponding to a red pixel, a green pixel, and a first blue pixel in an embodiment of the present application;

[0039] Figure 4 1 is a wavelength-light intensity correspondence diagram corresponding to a red pixel, a green pixel, and a second blue pixel in an embodiment of the present application;

[0040] Figure 5 is a flow chart of a display panel control method in one embodiment of the present application;

[0041] Figure 6 1 is a flow chart of a display panel control method in one embodiment of the present application.

[0042] Figure Number:

[0043] 1. Substrate; 2. Pixel driving circuit; 21. Driving subcircuit; 3. Pixel layer; 31. Pixel unit; 311. Red pixel; 312. Green pixel; 313. First blue pixel; 314. Second blue pixel; 4. First color gamut range; 5. Second color gamut range. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0047] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0048] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0049] See also Figure 1 An embodiment of the present application provides a display panel, which includes a substrate 1, a pixel driving circuit 2 and a pixel layer 3. The pixel driving circuit 2 and the pixel layer 3 are both arranged on the substrate 1, and the pixel driving circuit 2 is used to drive the pixel layer 3 to light up.

[0050] Among them, the pixel driving circuit 2 includes a plurality of driving sub-circuits 21. The pixel layer 3 includes pixel units 31 arranged in an array. The pixel unit 31 is the smallest unit containing various color pixels for display. If the display panel displays images through three primary colors, the corresponding pixel unit 31 includes pixels of red, green, and blue. If the display panel displays images through four color pixels, the pixel unit 31 includes corresponding pixels of the four colors. In this embodiment, the pixel unit 31 includes a red pixel 311, a green pixel 312, a first blue pixel 313, and a second blue pixel 314. Each driving sub-circuit 21 corresponds to each color pixel one-to-one. The driving sub-circuit 21 is respectively used to control the lighting of the corresponding color pixel. The color pixels are the above-mentioned red pixel 311, green pixel 312, first blue pixel 313, and second blue pixel 314.

[0051] The light transmission band of the first blue pixel 313 is different from the light transmission band of the second blue pixel 314. The light transmission band of the first blue pixel 313 is set to a band of non-harmful blue light, while the light transmission band of the second blue pixel 314 is set to a band of harmful blue light. In other words, the light transmission band of the first blue pixel 313 is closer to the light transmission bands of the red pixel 311 and the green pixel 312 than the light transmission band of the second blue pixel 314.

[0052] When the display panel is set to the first display mode, the pixel driving circuit 2 drives the red pixel 311, the green pixel 312, and the first blue pixel 313 to emit light, while the second blue pixel 314 does not emit light. Because the light transmission band of the first blue pixel 313 is set to a band that does not contain harmful blue light, the light emitted by the display panel does not contain harmful blue light, and the display panel is in the eye protection mode.

[0053] When the display panel is set to the second display mode, the pixel driving circuit 2 drives the red pixel 311, the green pixel 312, and the second blue pixel 314 to emit light, while the first blue pixel 313 does not emit light. Because the light transmission band of the first blue pixel 313 and the light transmission band of the second blue pixel 314 are different, the color gamut of the second display mode is different from that of the first display mode. At the same time, the light transmission band of the second blue pixel 314 in the second display mode is not limited by eye protection requirements. Therefore, a wider color gamut can be achieved by adjusting the optical parameters of the second blue pixel 314, such as wavelength and color coordinates.

[0054] In this embodiment, different types of blue pixels are set and different blue pixels are adjusted to light up to achieve switching between different modes such as eye protection mode and wide color gamut mode, so as to take into account both display performance (wide color gamut) and eye protection requirements (low blue light).

[0055] In one embodiment, Figure 2 As shown, red pixels 311 and green pixels 312 are not adjusted during mode switching. After the relevant optical parameters of the first blue pixel 313 are set based on eye protection requirements, the first color gamut range 4 of the first display mode is determined based on the optical parameters of the red pixels 311, green pixels 312, and the first blue pixel 313. However, setting the first blue pixel 313 based on eye protection requirements results in a limited first color gamut range 4 of the first display mode. Therefore, a second blue pixel 314 is set to implement the second display mode, and the second color gamut range 5 of the second display mode is set to be larger than the first color gamut range 4 of the first display mode. That is, a wide color gamut mode is set in addition to the eye protection mode.

[0056] Furthermore, the second color gamut range 5 of the second display mode includes the first color gamut range 4 of the first display mode. When the color coordinates of the second blue pixel 314 are closer to the origin than the color coordinates of the first blue pixel 313, that is, the distance from the color coordinates of the second blue pixel 314 to the origin is smaller than the distance from the color coordinates of the first blue pixel 313 to the origin, the second color gamut range 5 of the second display mode includes the first color gamut range 4 of the first display mode. Figure 2 As shown, the color coordinates of the red pixel 311 correspond to point A, the color coordinates of the green pixel 312 correspond to point B, the color coordinates of the first blue pixel 313 correspond to point C, and the color coordinates of the second blue pixel 314 correspond to point D. The three points ABC form the first color gamut range 4, and the three points ABD form the second color gamut range 5. The second color gamut range 5 is larger than the first color gamut range 4. Furthermore, the second color gamut range 5 includes the first color gamut range 4. It should be noted that Figure 2 The color gamut range shown is an example for ease of understanding, and it should not be understood that this embodiment is limited thereto.

[0057] When the display panel is in the first display mode, which is the eye protection mode, and when the display panel is in the second display mode, which is the wide color gamut mode, the display panel can select an appropriate mode for display based on user needs or the color coordinates of each pixel in the picture to be displayed, that is, the display panel of this embodiment can take into account both display performance (wide color gamut) and eye protection requirements (low blue light).

[0058] In one embodiment, based on eye protection requirements, the allowable transmission wavelength of the first blue pixel 313 is greater than 400nm (i.e., does not contain UV light). For the second blue pixel 314, in order to distinguish it from the first blue pixel 313, the wavelength corresponding to the extreme value of the intensity of the transmission band of the second blue pixel 314 is less than 450nm. The extreme value of the intensity of the transmission band of the second blue pixel 314 is the wavelength corresponding to the point with the maximum light intensity in the emission spectrum of the second blue pixel 314 (wavelength-light intensity correspondence diagram), that is, the wavelength corresponding to the peak in the emission spectrum of the second blue pixel 314 is less than 450nm. In one example, the wavelength-light intensity correspondence diagram corresponding to the red pixel 311, the green pixel 312 and the first blue pixel 313 is as shown in FIG. Figure 3 As shown, the wavelength-light intensity corresponding to the red pixel 311, the green pixel 312 and the second blue pixel 314 are shown in FIG. Figure 4 The corresponding first color gamut range 4 and second color gamut range 5 are shown as Figure 2 In addition, based on the requirement of wide color gamut, the color coordinates of the second blue pixel 314 are closer to the origin than the color coordinates of the first blue pixel 313. Other parameter performances are not specifically limited in this embodiment.

[0059] In one embodiment, the irradiance of blue light corresponding to wavelengths within a preset intensity range of the allowed transmittance wavelength of the first blue pixel 313 is less than or equal to 20% of the irradiance of blue light corresponding to the allowed transmittance wavelength. The preset intensity range is a fluctuation range based on the peak in the emission spectrum of the second blue pixel 314. The smaller the fluctuation range is set, the better the eye protection effect of the pixel of the corresponding color. Therefore, it is set based on the eye protection accuracy requirements. For example, if the fluctuation range is set to ±20nm, the preset intensity range is ±20nm of the peak, that is, the irradiance within ±20nm of the blue light peak shall not exceed 20% of the irradiance of the entire spectrum range.

[0060] In one embodiment, the ratio of the energy of 415nm-455nm blue light to the energy of 400nm-500nm blue light in the allowed transmittance wavelength of the first blue pixel 313 is less than or equal to a preset threshold value, so as to minimize harmful blue light and excessively strong blue light from entering the human eye. The preset threshold value is set to a maximum of 50%, that is, the proportion of light in the range of 415-455nm to light in the range of 400-500nm is less than 50%. The smaller the proportion of light in the range of 415-455nm to light in the range of 400-500nm, the better the eye protection effect. Therefore, the smaller the preset threshold value is set, the higher the anti-blue light eye protection requirements of the display panel. It should be noted that the preset intensity range and the preset threshold value can be freely set based on different eye protection requirements, and this embodiment does not make specific limitations.

[0061] In one embodiment, since the pixels coated with different colors do not emit light themselves, it is generally the light emitted by the light source that shines on each pixel and then emits light of the corresponding color. Therefore, each color pixel actually includes a light source and a corresponding sub-pixel (not shown in the figure), that is, each pixel unit 31 includes a light source and a corresponding red sub-pixel, a green sub-pixel, a first blue sub-pixel, and a second blue sub-pixel. Among them, each driving sub-circuit 21 corresponds to a light source one-to-one, and each color sub-pixel is provided on the corresponding light source. The driving sub-circuit 21 is used to control the corresponding light source to light up or turn off. When a certain driving sub-circuit 21 drives the corresponding light source to emit light, the light shines on the corresponding color sub-pixel to emit light of the corresponding color.

[0062] When the display panel is set to the first display mode, the pixel driving circuit 2 drives the light sources corresponding to the red sub-pixel, the green sub-pixel, and the first blue sub-pixel to light up, while the light source corresponding to the second blue sub-pixel does not emit light. When the display panel is set to the second display mode, the pixel driving circuit 2 drives the light sources corresponding to the red sub-pixel, the green sub-pixel, and the second blue sub-pixel to light up, while the light source corresponding to the first blue sub-pixel does not emit light.

[0063] The material of pixel layer 3 can be quantum dots, which offer the advantage of a wide color gamut. However, quantum dot blue light materials have high color purity and can produce deep blue light (short wavelength), but they may contain harmful blue light components. Switching between modes in this embodiment can reduce the harmful effects of blue light while fully utilizing the wide color gamut advantage of quantum dots.

[0064] In one embodiment, in the driving sub-circuit 21 corresponding to the second blue pixel 314 in the first display mode, the scan line is configured as a connection signal, and the data line is configured as a disconnection signal. In the driving sub-circuit 21 corresponding to the first blue pixel 313 in the second display mode, the scan line is configured as a connection signal, and the data line is configured as a disconnection signal. That is to say, regardless of whether the display panel is in the first display mode or the second display mode, when a row of pixels is driven for display, the scan line configuration of the driving sub-circuit 21 corresponding to the row of pixels is a connection signal, and different modes of display are achieved through the signal of the data line, that is, this embodiment achieves different modes of display by adjusting the control timing through the controller IC. The structure of the pixel driving circuit 2 itself and the connection method between each driving sub-circuit 21 and the color pixel are commonly used structures in the field, and this embodiment does not specifically limit them.

[0065] This embodiment sets different types of blue pixels and adjusts the lighting of different blue pixels to achieve switching between different modes such as eye protection mode and wide color gamut mode, so as to take into account both display performance (wide color gamut) and eye protection requirements (low blue light).

[0066] See also Figures 1 to 5 , an embodiment of the present application provides a display panel control method, which is applied to the display panel described in any one of the above embodiments, and the method includes:

[0067] S101, obtaining color coordinates of each pixel unit in a picture to be displayed, each pixel unit including a red pixel, a green pixel, a first blue pixel, and a second blue pixel;

[0068] S102: If the color coordinates all belong to the first color gamut range 4 of the first display mode, light up the red pixel, the green pixel, and the first blue pixel corresponding to the first display mode;

[0069] S103: If a certain color coordinate does not belong to the first color gamut range 4 of the first display mode but belongs to the second color gamut range 5 of the second display mode, light up the red pixel, the green pixel, and the second blue pixel corresponding to the second display mode.

[0070] Specifically, the pixel unit 31 is the smallest unit that includes pixels of various colors for display. If the display panel displays images using three primary colors, the corresponding pixel unit 31 includes pixels of red, green, and blue. If the display panel displays images using four primary colors, the pixel unit 31 includes pixels of the corresponding four colors. In this embodiment, the pixel unit 31 includes a red pixel 311, a green pixel 312, a first blue pixel 313, and a second blue pixel 314.

[0071] The first display mode corresponds to the red pixel 311, the green pixel 312, and the first blue pixel 313, and the second display mode corresponds to the red pixel 311, the green pixel 312, and the second blue pixel 314. The color coordinates of each pixel in the image to be displayed are obtained. Since the second color gamut range 5 of the second display mode is larger than the first color gamut range 4 of the first display mode, the first display mode is an eye protection mode. Therefore, if the color coordinates of all pixels in the image to be displayed belong to the first color gamut range 4 of the first display mode, that is, the first display mode can fully display the colors of each pixel in the image to be displayed, the red pixel 311, the green pixel 312, and the first blue pixel 313 corresponding to the first display mode are lit to display the image to be displayed, while protecting the eyes and not affecting the display effect of the image.

[0072] If the color coordinates of at least one pixel among all the pixels of the picture to be displayed do not belong to the first color gamut range 4 of the first display mode, that is, the first display mode cannot display all the colors in the picture to be displayed, so the red pixel 311, green pixel 312 and second blue pixel 314 corresponding to the second display mode are lit to realize the display of the picture to be displayed, and the second display mode with a wide color gamut avoids affecting the display effect.

[0073] Among them, the color coordinates of each pixel in the next frame to be displayed are obtained every preset period, and then the display mode is selected according to the above method. The preset period can be freely set as needed, for example, to one frame or ten frames, etc. The shorter the preset period, the better the display effect, but the higher the processing requirements of the display panel.

[0074] It should be noted that the display mode can be switched according to the mode instruction selected by the user. For example, if the user selects the first display mode, the color coordinates of each pixel in the image to be displayed are not obtained to switch the display mode. Instead, the first display mode is maintained for display until the mode instruction is switched again according to the user's mode instruction. The mode instruction includes a first display mode instruction, a second display mode instruction, and an intelligent display mode instruction. The intelligent display mode instruction is the above-mentioned intelligent selection of the first display mode or the second display mode based on the obtained color coordinates of each pixel in the image to be displayed.

[0075] In one embodiment, Figure 6 As shown, before the step S101 of obtaining the color coordinates of each pixel in the image to be displayed, the following steps are included:

[0076] S201, acquiring optical parameters of the red pixel 311, the green pixel 312, the first blue pixel 313, and the second blue pixel 314;

[0077] S202: Determine the first color gamut range 4 and the second color gamut range 5 according to the optical parameters, wherein the second color gamut range is larger than the first color gamut range.

[0078] Specifically, based on eye protection requirements, the allowable transmission wavelength of the first blue pixel 313 is greater than 400nm (i.e., does not contain UV light). For the second blue pixel 314, in order to distinguish it from the first blue pixel 313, the wavelength corresponding to the intensity extreme value of the transmission band of the second blue pixel 314 is less than 450nm. The intensity extreme value of the transmission band of the second blue pixel 314 is the wavelength corresponding to the point with the maximum light intensity in the emission spectrum of the second blue pixel 314 (wavelength-light intensity correspondence diagram), that is, the wavelength corresponding to the peak in the emission spectrum of the second blue pixel 314 is less than 450nm. In one example, the wavelength-light intensity correspondence diagram corresponding to the red pixel 311, the green pixel 312 and the first blue pixel 313 is as shown in the figure. Figure 3 As shown, the wavelength-light intensity corresponding to the red pixel 311, the green pixel 312 and the second blue pixel 314 are shown in FIG. Figure 4 The corresponding first color gamut range 4 and second color gamut range 5 are shown as Figure 2 In addition, based on the requirement of wide color gamut, the color coordinates of the second blue pixel 314 are closer to the origin than the color coordinates of the first blue pixel 313. Other parameter performances are not specifically limited in this embodiment.

[0079] The irradiance of blue light corresponding to wavelengths within a preset intensity range in the allowed transmittance wavelength of the first blue pixel 313 is less than or equal to 20% of the irradiance of blue light corresponding to the allowed transmittance wavelength. The preset intensity range is a fluctuation range based on the peak in the emission spectrum of the second blue pixel 314. The smaller the fluctuation range is set, the better the eye protection effect of the pixel of the corresponding color. Therefore, it is set based on the eye protection accuracy requirements. For example, if the fluctuation range is set to ±20nm, the preset intensity range is ±20nm of the peak, that is, the irradiance within ±20nm of the blue light peak shall not exceed 20% of the irradiance of the entire spectrum range.

[0080] The ratio of the energy of 415nm-455nm blue light to the energy of 400nm-500nm blue light in the allowed transmittance wavelength of the first blue pixel 313 is less than or equal to the preset threshold value, so as to minimize the harmful blue light and excessively strong blue light from entering the human eye. The preset threshold value is set to a maximum of 50%, that is, the proportion of light in the range of 415-455nm to 400-500nm is less than 50%. The smaller the proportion of light in the range of 415-455nm to 400-500nm, the better the eye protection effect. Therefore, the smaller the preset threshold value is set, the higher the anti-blue light eye protection requirements of the display panel. It should be noted that the preset intensity range and the preset threshold value can be freely set based on different eye protection requirements, and this embodiment does not make specific limitations.

[0081] During mode switching, red pixels 311 and green pixels 312 are not adjusted. After the relevant optical parameters of the first blue pixel 313 are set based on eye protection requirements, the first color gamut range 4 of the first display mode is determined based on the optical parameters of the red pixels 311, green pixels 312, and the first blue pixel 313. However, setting the first blue pixel 313 based on eye protection requirements results in a limited first color gamut range 4 of the first display mode. Therefore, a second blue pixel 314 is set to switch to the second display mode, and the second color gamut range 5 of the second display mode is larger than the first color gamut range 4 of the first display mode.

[0082] Furthermore, the second color gamut range 5 of the second display mode includes the first color gamut range 4 of the first display mode. When the color coordinates of the second blue pixel 314 are closer to the origin than the color coordinates of the first blue pixel 313, that is, the distance from the color coordinates of the second blue pixel 314 to the origin is smaller than the distance from the color coordinates of the first blue pixel 313 to the origin, the second color gamut range 5 of the second display mode includes the first color gamut range 4 of the first display mode. Figure 2 As shown, the color coordinates of the red pixel 311 correspond to point A, the color coordinates of the green pixel 312 correspond to point B, the color coordinates of the first blue pixel 313 correspond to point C, and the color coordinates of the second blue pixel 314 correspond to point D. The three points ABC form the first color gamut range 4, and the three points ABD form the second color gamut range 5. It should be noted that Figure 2 The color gamut range shown is an example for ease of understanding, and it should not be understood that this embodiment is limited thereto.

[0083] This embodiment sets different types of blue pixels and adjusts the lighting of different blue pixels to achieve switching between different modes such as eye protection mode and wide color gamut mode, so as to take into account both display performance (wide color gamut) and eye protection requirements (low blue light).

[0084] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0085] An embodiment of the present application provides a display device, which includes the display panel described in any one of the above embodiments.

[0086] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above is a detailed introduction to a display panel, a display panel control method and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A display panel, characterized in that: include: substrate; A pixel driving circuit is provided on the substrate, wherein the pixel driving circuit includes a plurality of driving sub-circuits; a pixel layer disposed on the substrate, the pixel layer including pixel units arranged in an array, the pixel units including a red pixel, a green pixel, a first blue pixel, and a second blue pixel; each driving subcircuit corresponds to each color pixel one-to-one, the driving subcircuit being configured to drive the corresponding color pixel to light up, the light transmission band of the first blue pixel being different from the light transmission band of the second blue pixel; In the first display mode, the pixel driving circuit drives the red pixel, the green pixel, and the first blue pixel to light up; or, in the second display mode, the pixel driving circuit drives the red pixel, the green pixel, and the second blue pixel to light up; The irradiance of blue light corresponding to the wavelength within the preset intensity range among the allowed transmission wavelengths of the first blue pixel is less than or equal to 20% of the irradiance of blue light corresponding to the allowed transmission wavelength of the first blue pixel.

2. The display panel according to claim 1, wherein The second color gamut range of the second display mode is greater than the first color gamut range of the first display mode.

3. The display panel according to claim 1, wherein The allowed transmission wavelength of the first blue pixel is greater than 400 nm.

4. The display panel according to claim 1, wherein: The ratio of the energy of the blue light in the range of 415nm to 455nm to the energy of the blue light in the range of 400nm to 500nm in the allowed transmission wavelength is less than or equal to a preset threshold.

5. The display panel according to claim 1, wherein: The wavelength corresponding to the intensity extreme value of the transmission band of the second blue pixel is less than 450 nm.

6. The display panel according to claim 1, wherein: The material of the pixel layer is quantum dots.

7. A display panel control method, applied to control the display panel according to any one of claims 1 to 6, characterized in that: include: Obtaining color coordinates of each pixel unit in a picture to be displayed, each of the pixel units including a red pixel, a green pixel, a first blue pixel, and a second blue pixel; If the color coordinates all belong to the first color gamut range of the first display mode, lighting up the red pixel, the green pixel, and the first blue pixel corresponding to the first display mode; If a certain color coordinate does not belong to the first color gamut range of the first display mode, but belongs to the second color gamut range of the second display mode, the red pixel, the green pixel and the second blue pixel corresponding to the second display mode are lit; the irradiance of the blue light corresponding to the wavelength within the preset intensity range of the allowed transmittance wavelength of the first blue pixel is less than or equal to 20% of the irradiance of the blue light corresponding to the allowed transmittance wavelength of the first blue pixel.

8. The display panel control method according to claim 7, wherein: Before obtaining the color coordinates of each pixel in the picture to be displayed, the method includes: Acquire optical parameters of the red pixel, the green pixel, the first blue pixel, and the second blue pixel; The first color gamut range and the second color gamut range are determined according to the optical parameters, and the second color gamut range is larger than the first color gamut range.

9. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 6.

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