Display panel, driving chip and display device

Abstract

The invention discloses a display panel, a driving chip and a display device. The display panel comprises a first type of pixels and a second type of pixels, the light-emitting view angle of the first type of pixels is a first view angle, the light-emitting view angle of the second type of pixels is a second view angle, and the first view angle is larger than the second view angle; the first type of pixels comprise first type of sub-pixels with multiple light-emitting colors, and the second type of pixels comprise second type of sub-pixels with multiple light-emitting colors; the first driving parameters accessed by the first type of sub-pixels and the second type of sub-pixels with the same light emitting color are different. According to the display panel, the driving chip and the display device provided by the embodiment of the invention, the consistency of display effects in different display modes can be improved.

Description

Technical Field

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

[0002] With the development of display technology, the functions of display panels are becoming more and more diversified. For example, a display panel is provided with pixels with wide viewing angles and pixels with narrow viewing angles, and the purpose of viewing angle switching is achieved by driving pixels with different viewing angles. In different display modes, the viewing angles of the display panel are different, so that the application occasions of the display panel can be expanded. How to improve the consistency of display effects in different display modes is a technical problem that technicians in this field are committed to solving. Summary of the invention

[0003] The embodiments of the present application provide a display panel, a driver chip and a display device, which can improve the consistency of display effects under different display modes.

[0004] In a first aspect, an embodiment of the present application provides a display panel including: a first type of pixels and a second type of pixels, the light emitting viewing angle of the first type of pixels is a first viewing angle, the light emitting viewing angle of the second type of pixels is a second viewing angle, and the first viewing angle is greater than the second viewing angle; the first type of pixels includes first type sub-pixels of multiple luminous colors, and the second type of pixels includes second type sub-pixels of multiple luminous colors; the first driving parameters connected to the first type sub-pixels and the second type sub-pixels of the same luminous color are different.

[0005] Based on the same technical concept, in a second aspect, an embodiment of the present application provides a driver chip for driving a display panel, wherein the display panel comprises: a first type of pixel and a second type of pixel, wherein the light emitting viewing angle of the first type of pixel is a first viewing angle, and the light emitting viewing angle of the second type of pixel is a second viewing angle, and the first viewing angle is greater than the second viewing angle; the first type of pixel comprises a first type of sub-pixels of a plurality of luminous colors, and the second type of pixel comprises a second type of sub-pixels of a plurality of luminous colors;

[0006] The driving chip is used to provide different first driving parameters to the first type of sub-pixels and the second type of sub-pixels of the same luminous color.

[0007] Based on the same technical concept, in a third aspect, an embodiment of the present application provides a display device, comprising: a display panel as described in the embodiment of the first aspect, and a driving chip as described in the embodiment of the second aspect.

[0008] According to the display panel, driver chip and display device provided in the embodiments of the present application, the display panel includes first-class pixels and second-class pixels with different light emitting viewing angles, so that the display panel can support display modes with different viewing angles, and the first-class sub-pixels and the second-class sub-pixels of the same luminous color are connected to different first driving parameters, so that the first-class sub-pixels and the second-class sub-pixels of the same luminous color can be driven separately based on different first driving parameters. Compared with the related art that uses the same driving parameters to drive the first-class sub-pixels and the second-class sub-pixels of different viewing angles and cannot simultaneously meet the respective needs of the two types of sub-pixels, the implementation of the present application can take into account the respective needs of the two types of sub-pixels, thereby solving the technical problem of large brightness difference when switching display modes with different viewing angles in the related art.

[0009] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features and the accompanying drawings are not drawn to scale.

[0011] Figure 1 A schematic diagram showing a top view of a local area of ​​a display panel provided in an embodiment of the present application is shown;

[0012] Figure 2 Show Figure 1 A schematic diagram of a cross-sectional structure in the A-A' direction;

[0013] Figure 3 A schematic diagram showing a structure of a pixel circuit in a display panel provided in an embodiment of the present application is shown;

[0014] Figure 4 A schematic diagram showing a data voltage range of a display panel provided by an embodiment of the present application;

[0015] Figure 5 A schematic diagram showing a display scene of a display panel provided in an embodiment of the present application is shown;

[0016] Figure 6 Another schematic diagram showing the data voltage range of the display panel provided by an embodiment of the present application;

[0017] Figure 7 A schematic diagram showing a gamma curve of a display panel provided by an embodiment of the present application;

[0018] Figure 8 A timing diagram showing a light emitting control signal of a display panel provided in an embodiment of the present application;

[0019] Fig. 9 A schematic diagram showing another display scenario of a display panel provided in an embodiment of the present application is shown;

[0020] Fig.10 A schematic diagram of the structure of a display device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0023] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0024] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "electrical connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0026] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0027] Before describing the technical solutions provided by the embodiments of the present application, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related art:

[0028] Organic Light Emitting Diode (OLED) display panels have many advantages such as self-luminescence, fast response, high brightness, and thinness, and have gradually become the mainstream in the display field. Taking OLED display panels as an example, OLED display panels are provided with pixels with wide viewing angles and pixels with narrow viewing angles, and the purpose of viewing angle switching is achieved by driving pixels with different viewing angles.

[0029] However, in the related art, there is a technical problem of large brightness difference when switching display modes of different viewing angles.

[0030] In order to solve the above technical problems, the embodiments of the present application provide a display panel, a driver chip and a display device, which can solve the technical problem existing in the related art that there is a large difference in brightness when switching display modes with different viewing angles.

[0031] The technical concept of the embodiments of the present application is that different first driving parameters are used to drive first-category sub-pixels and second-category sub-pixels of different viewing angles for the same luminous color. Compared with using the same driving parameters to drive first-category sub-pixels and second-category sub-pixels of different viewing angles, which cannot simultaneously meet the respective needs of the two types of sub-pixels, the embodiments of the present application can take into account the respective needs of the two types of sub-pixels, thereby solving the technical problem in the related art that there is a large brightness difference when switching display modes with different viewing angles.

[0032] The following first introduces the display panel provided in the embodiment of the present application.

[0033] Figure 1 FIG. 1 is a schematic diagram showing a top view of a local area of ​​a display panel provided by an embodiment of the present application. Figure 1 As shown, the display panel 100 provided in the embodiment of the present application includes a first type of pixel 10 and a second type of pixel 20. The light emitting viewing angle of the first type of pixel 10 is a first viewing angle, and the light emitting viewing angle of the second type of pixel 20 is a second viewing angle. Since the display panel includes pixels with different light emitting viewing angles, display modes under different viewing angles can be realized. The first viewing angle is greater than the second viewing angle. In this case, the display mode corresponding to the first viewing angle is a wide viewing angle display mode, and the display mode corresponding to the second viewing angle is a narrow viewing angle display mode. The first type of pixel 10 can also be called a wide viewing angle pixel, and the second type of pixel 20 can also be called a narrow viewing angle pixel.

[0034] The first type of pixel 10 includes first type of sub-pixels 11 of multiple luminous colors, and the second type of pixel 20 includes second type of sub-pixels 21 of multiple luminous colors. The first type of sub-pixels and the second type of sub-pixels of the same luminous color are connected to different first driving parameters.

[0035] For example, Figure 1 As shown, the first type of sub-pixel and the second type of sub-pixel both include sub-pixels of three luminous colors, and the three luminous colors of the sub-pixels can be red sub-pixels, green sub-pixels and blue sub-pixels. Figure 1In the figure, the first type of sub-pixels of different luminous colors included in the first type of pixels are marked as R1, G1, and B1, respectively, and the second type of sub-pixels of different luminous colors included in the second type of pixels are marked as R2, G21, G22, B21, B22, and B23, respectively. It can be understood that the light emitting viewing angle of the first type of sub-pixel 11 is the first viewing angle, and the light emitting viewing angle of the second type of sub-pixel 21 is the second viewing angle. Among them, the first driving parameters connected to the first type of red sub-pixel and the second type of red sub-pixel are different, the first driving parameters connected to the first type of green sub-pixel and the second type of green sub-pixel are different, and the first driving parameters connected to the first type of blue sub-pixel and the second type of blue sub-pixel are different. The first driving parameters connected to the first type of sub-pixels and the second type of sub-pixels of different luminous colors may be the same or different, and the present application does not limit this.

[0036] Here, the first driving parameter refers to a driving parameter that affects the luminance of the sub-pixel. Exemplarily, the first driving parameter includes, but is not limited to: a reset voltage of a light-emitting element for resetting the sub-pixel, a black state gamma voltage (maximum value of the data voltage), a white state gamma voltage (minimum value of the data voltage), and a data voltage at the same target brightness.

[0037] It should be noted that the display panel is usually gamma calibrated so that the display panel meets the target brightness requirements and the target color coordinate requirements. The first driving parameter may be a driving parameter determined after gamma calibration. For the first type of sub-pixels and the second type of sub-pixels of the same luminous color, gamma calibration may be performed separately, so that the first driving parameters corresponding to the first type of sub-pixels and the second type of sub-pixels of the same luminous color are different.

[0038] As an example, you can follow Figure 2 The structure shown in the figure can realize different sub-pixels with different light output viewing angles. Figure 2 Taking the red sub-pixel R1 of the first type of pixel and the red sub-pixel R2 of the second type of pixel as examples, the red sub-pixel R1 and the red sub-pixel R2 are arranged on a substrate 2, and the substrate 2 includes a substrate 6 and an insulating layer 7. Each sub-pixel has a light-emitting element, and a pixel definition layer 9 is included between any adjacent light-emitting elements. The light-emitting element includes an anode 12 and a cathode 14, and a light-emitting layer 13 located between the anode 12 and the cathode 14. In addition, Figure 2 Reference numeral 8 denotes a packaging layer.

[0039] The red sub-pixel R1 and the red sub-pixel R2 emit light at different angles. For example, the red sub-pixel R1 emits light with a wide viewing angle, and the red sub-pixel R2 emits light with a narrow viewing angle. The red sub-pixel R1 and the red sub-pixel R2 may be designed to have different light angles, which is not limited in the present application. For example, a light blocking pattern may be provided around the red sub-pixel R2 to limit the light output angle of the red sub-pixel R2. For another example, a lens capable of focusing light may be provided on the light output path of the red sub-pixel R2 to limit the light output angle of the red sub-pixel R2.

[0040] It should be noted that Figure 2 Only the red sub-pixel R1 and the red sub-pixel R2 are taken as examples, and the structures of sub-pixels of other luminous colors may be similar.

[0041] It should also be noted that Figure 1 and Figure 2 The structure shown is only an example and is not intended to limit the present application. The first driving parameters of the first sub-pixel and the second sub-pixel of the same luminous color provided in the present application are different and have universal applicability, and can be applied to display panels of other structures that support display modes corresponding to different viewing angles.

[0042] As an example, the light-emitting element of the red sub-pixel R1 and the light-emitting element of the red sub-pixel R2 can be driven by different pixel circuits respectively, which makes it easier to connect the first type of sub-pixels and the second type of sub-pixels of the same luminous color to different first driving parameters.

[0043] As another example, the light-emitting element of the red sub-pixel R1 and the light-emitting element of the red sub-pixel R2 can also be driven by the same pixel circuit. For example, the same pixel can be lit to drive the light-emitting element of the red sub-pixel R1 and the light-emitting element of the red sub-pixel R2 in a time-sharing manner, thereby achieving the connection of different first driving parameters to the first type of sub-pixels and the second type of sub-pixels of the same light-emitting color.

[0044] Exemplarily, in the same second-type pixel, when there are multiple second-type sub-pixels of the same luminous color, the multiple second-type sub-pixels of the same luminous color can share the same pixel circuit for driving. For example, the second-type sub-pixels B21, B22, and B23 can share the same pixel circuit for driving. For another example, the second-type sub-pixels G21 and G22 can share the same pixel circuit for driving.

[0045] Exemplarily, in the same second-type pixel, when there are multiple second-type sub-pixels of the same luminous color, the first driving parameters connected to the multiple second-type sub-pixels of the same luminous color may be the same. For example, the first driving parameters connected to the second-type sub-pixels B21, B22, and B23 are the same. For another example, the first driving parameters connected to the second-type sub-pixels G21 and G22 are the same.

[0046] According to the display panel provided by the embodiment of the present application, the display panel includes a first type of pixels and a second type of pixels with different light emitting viewing angles, so that the display panel can support display modes with different viewing angles, and the first type of sub-pixels and the second type of sub-pixels with the same luminous color are connected to different first driving parameters, so that the first type of sub-pixels and the second type of sub-pixels with the same luminous color can be driven separately based on different first driving parameters. Compared with the related art that uses the same driving parameters to drive the first type of sub-pixels and the second type of sub-pixels with different viewing angles and cannot simultaneously meet the respective needs of the two types of sub-pixels, the implementation of the present application can take into account the respective needs of the two types of sub-pixels, thereby solving the technical problem of large brightness difference when switching display modes with different viewing angles in the related art.

[0047] For example, Figure 2 As shown, the pixel definition layer 9 is provided with an opening, and the light-emitting layer of the light-emitting element of the sub-pixel is provided in the opening. The size of the opening area affects the light-emitting area of ​​the sub-pixel. The larger the opening area, the larger the light-emitting area of ​​the sub-pixel. In any case, the smaller the opening area, the smaller the light-emitting area of ​​the sub-pixel. The larger the opening area, the easier it is for the light to diverge, and the more difficult it is to achieve a narrow viewing angle.

[0048] In some embodiments, the opening areas of the first type of sub-pixels and the second type of sub-pixels can be set differently. The opening area of ​​the first type of sub-pixels of the same luminous color is larger than the opening area of ​​the second type of sub-pixels.

[0049] like Figure 1 As shown, each trapezoid represents the opening area of ​​each first-class sub-pixel 11, and each circle represents the opening area of ​​each second-class sub-pixel 21. The opening area of ​​the first-class red sub-pixel R1 is larger than the opening area of ​​the second-class red sub-pixel R2. The opening area of ​​the first-class green sub-pixel G1 is larger than the opening area of ​​any second-class green sub-pixel G21, G22. The opening area of ​​the first-class blue sub-pixel B1 is larger than the opening area of ​​any second-class blue sub-pixel B21, B22, B23.

[0050] Exemplarily, the opening areas of multiple second-type sub-pixels of the same luminous color may be the same. For example, the opening areas of two second-type green sub-pixels G21 and G22 are the same. The opening areas of three second-type blue sub-pixels B21, B22, and B23 are the same.

[0051] In this example, the opening area of ​​the first type of sub-pixel is larger, and the light emitted by the first type of sub-pixel is more likely to diverge, so that the first type of sub-pixel can easily achieve a relatively large light-emitting viewing angle; while the opening area of ​​the second type of sub-pixel is smaller, and the light emitted by the first type of sub-pixel is not easy to diverge, so that the second type of sub-pixel can easily achieve a relatively small light-emitting viewing angle.

[0052] Of course, the above examples are not intended to limit the present application. For example, in other examples, it can also be designed that: the opening area of ​​the same second-type sub-pixel is larger than the opening area of ​​the first-type sub-pixel, and the second-type sub-pixel is provided with a focusing structure, which can also make the light output viewing angle of the second-type sub-pixel smaller.

[0053] In some embodiments, the first driving parameter includes a first reset voltage and a second reset voltage, the first reset voltage is used to reset the first light-emitting element of the first type of sub-pixel, and the second reset voltage is used to reset the second light-emitting element of the second type of sub-pixel.

[0054] The first type of sub-pixel includes a first light-emitting element, and the second type of sub-pixel includes a second light-emitting element. Figure 3 For example, the first light-emitting element 101 and the second light-emitting element 201 of the same light-emitting color can share a pixel circuit, but the first light-emitting element 101 emits light under the control of the first light-emitting control signal Emit1, and the second light-emitting element 201 emits light under the control of the second light-emitting control signal Emit2. Among them, the first reset voltage Vref21 is used to reset the anode of the first light-emitting element 101, and the second reset voltage Vref22 is used to reset the anode of the second light-emitting element 201. The first light-emitting element 101 and the second light-emitting element 201 of the same light-emitting color are connected to different anode reset voltages.

[0055] The first reset voltage Vref21 and the second reset voltage Vref22 are both negative voltages. In the non-luminous phase, the reset voltage is written to the anode of the light-emitting element; in the luminous phase, the pixel circuit provides a driving current, the anode of the light-emitting element is charged, and the anode potential of the light-emitting element is charged from the reset voltage to the light-on voltage, and the light-emitting element is lit. In other words, the anode reset voltage affects the ease of lighting the light-emitting element.

[0056] In order to achieve different light emitting viewing angles for the first and second sub-pixels, the two have different structures. For example, the first and second sub-pixels have different opening areas. The difference in structure will lead to differences in the ease of ignition of the two sub-pixels, resulting in differences in brightness in different display modes.

[0057] In this embodiment, the anode reset voltages of the first and second sub-pixels of the same luminous color are different. The anode reset voltage affects the ease of turning on the sub-pixels, which can compensate for the different ease of turning on caused by different structures, thereby balancing the ease of turning on the two types of sub-pixels and solving the problem of brightness differences in different display modes.

[0058] In some embodiments, the first type of sub-pixels are connected to a first common voltage, and the second type of sub-pixels are connected to a second common voltage. At the same target brightness, the absolute value of the difference between the first reset voltage and the first common voltage is greater than the absolute value of the difference between the second reset voltage and the second common voltage.

[0059] Still Figure 3 For example, the cathode of the first light-emitting element 101 of the first type of sub-pixel is connected to the first common voltage PVEE1, and the cathode of the second light-emitting element 201 of the second type of sub-pixel is connected to the second common voltage PVEE2. At the same target brightness, |Vref21-PVEE1|>|Vref22-PVEE2|.

[0060] For example, the opening area of ​​the first type of sub-pixel of the same luminous color is larger than the opening area of ​​the second type of sub-pixel. The smaller the opening area, the smaller the luminous area of ​​the sub-pixel. Under the same driving parameters, the second type of sub-pixel is easier to light up. The smaller the absolute value of the difference between the anode reset voltage and the common voltage, the less likely the sub-pixel will be to light up. In this embodiment, the absolute value of the difference between the anode reset voltage and the common voltage of the second type of sub-pixel is smaller, which makes it difficult for the first type of sub-pixel to light up, thereby compensating for the easy lighting caused by the larger opening area of ​​the first type of sub-pixel, and then making the lighting difficulty of the first type of sub-pixel and the second type of sub-pixel consistent, balancing the lighting difficulty of the two types of sub-pixels, so as to solve the problem of brightness difference in different display modes.

[0061] For example, the first common voltage and the second common voltage may be the same, that is, PVEE1 = PVEE2. The first type of sub-pixels and the second type of sub-pixels share a common voltage, so there is no need to increase wiring, which is conducive to a narrow frame.

[0062] When PVEE1=PVEE2, at the same target brightness, the absolute value of the first reset voltage is greater than the absolute value of the second reset voltage.

[0063] It should be noted that, when the opening area of ​​the first type of sub-pixel is smaller than the opening area of ​​the second type of sub-pixel, at the same target brightness, it can be designed as: |Vref21-PVEE1|<|Vref22-PVEE2|.

[0064] In some embodiments, the first driving parameter includes a first gamma voltage and a second gamma voltage, wherein the first gamma voltage is the maximum value of the data voltage connected to the first type of sub-pixels, and the second gamma voltage is the maximum value of the data voltage connected to the second type of sub-pixels.

[0065] Exemplarily, the data voltage can be generated based on the gamma module, and the gamma module generates the data voltage based on the maximum gamma voltage (VGMP) and the minimum gamma voltage (VGSP), the maximum gamma voltage is the maximum value of the data voltage, and the minimum gamma voltage is the minimum value of the data voltage. The display panel can generally be divided into 0 to 255 grayscales. For example, the driving transistor of the sub-pixel is a P-type transistor, wherein the brightness displayed by the grayscale 0 is the lowest, and the corresponding one is the maximum gamma voltage, which can also be called the black state voltage, and the brightness displayed by the grayscale 255 is the highest, and the corresponding one is the minimum gamma voltage, which can also be called the white state voltage.

[0066] For example, Figure 4 As shown, the first type of sub-pixels are connected to the first gamma voltage VGMP1, and the second type of sub-pixels are connected to the second gamma voltage VGMP2, and VGMP1≠VGMP2.

[0067] In order to make the first type of sub-pixel and the second type of sub-pixel have different light emitting angles, the two types of sub-pixels have different structures. For example, the opening areas of the first type of sub-pixel and the second type of sub-pixel are different. If the two share the maximum data voltage, they cannot take into account their respective black state requirements, for example, one type of sub-pixel may have a problem of stealing light.

[0068] In this embodiment, the maximum values ​​of the data voltages of the first and second sub-pixels of the same luminous color are different, which can flexibly meet the black state requirements of different types of sub-pixels to solve the problem of a certain type of sub-pixel being bright.

[0069] In some embodiments, the second gamma voltage is greater than the first gamma voltage.

[0070] like Figure 4 As shown, VGMP2>VGMP1, and both VGMP2 and VGMP1 are greater than 0.

[0071] For example, the opening area of ​​the first type of sub-pixel of the same luminous color is larger than the opening area of ​​the second type of sub-pixel. The smaller the opening area, the smaller the luminous area of ​​the sub-pixel, and the less likely the sub-pixel will be extinguished under the same maximum data voltage. In other words, the second type of sub-pixel has a small opening area, and the second type of sub-pixel is not easy to be in a dark state, and is easy to be bright. In this embodiment, the maximum value of the data voltage of the second type of sub-pixel is relatively large, which can ensure that the second type of sub-pixel is in a dark state, thereby avoiding the problem of the second type of sub-pixel being bright.

[0072] It should be noted that, when the opening area of ​​the first type of sub-pixel is smaller than the opening area of ​​the second type of sub-pixel, it can be designed as: VGMP2<VGMP1.

[0073] Exemplarily, the maximum gamma voltage is generated based on an analog voltage (Analog-VDD, AVDD). The AVDD voltage is the original voltage for driving the display panel to work. The AVDD voltage is formed through some circuit modules inside the display panel through operations including but not limited to boosting and bucking to form various voltages required for the display panel.

[0074] Exemplarily, the AVDD voltage is greater than the maximum gamma voltage. For example, the AVDD voltage is approximately equal to the maximum gamma voltage plus 0.3V.

[0075] Exemplarily, the first gamma voltage VGMP1 and the second gamma voltage VGMP2 may be generated based on the same AVDD voltage. For example, two step-down circuit modules may be used to step down the same AVDD voltage to generate different first gamma voltages VGMP1 and second gamma voltages VGMP2.

[0076] In some embodiments, the display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode, the second type of sub-pixels emit light in both the narrow viewing angle display mode and the wide viewing angle display mode, and the second type of sub-pixels receive the same second gamma voltage in both the narrow viewing angle display mode and the wide viewing angle display mode.

[0077] For example, Figure 5 As shown, take the example that the first type of pixels includes a red sub-pixel R1, a green sub-pixel G1 and a blue sub-pixel B1, the second type of pixels includes a red sub-pixel R2, two green sub-pixels G21 and G22, and three blue sub-pixels B21, B22 and B23. Figure 5 The image 5a in the figure represents the wide viewing angle display mode, and the image 5b represents the narrow viewing angle display mode. Figure 5 For the same sub-pixel, a sub-pixel filled with black indicates a non-luminous sub-pixel, and a sub-pixel filled with white indicates a luminous sub-pixel. In the wide viewing angle display mode and the narrow viewing angle display mode, the second type of sub-pixels R2, G21, G22, B21, B22, and B23 all emit light.

[0078] For example, Figure 5 A dotted box in the figure represents a repeating unit, the repeating unit includes a first type of pixel and a second type of pixel, and the display panel includes a plurality of repeating units arranged in an array.

[0079] The second type of sub-pixels share the same second gamma voltage in the two display modes, which can ensure that the second type of sub-pixels reach the same black state when displaying black images in the two display modes.

[0080] In some embodiments, the first driving parameter includes a third gamma voltage and a fourth gamma voltage, the third gamma voltage being the minimum value of the data voltage connected to the first type of sub-pixels, and the fourth gamma voltage being the minimum value of the data voltage connected to the second type of sub-pixels.

[0081] The third gamma voltage is a minimum gamma voltage of the first type of sub-pixels, and the fourth gamma voltage is a minimum gamma voltage of the second type of sub-pixels.

[0082] For example, Figure 4 or Figure 6 As shown, the first type of sub-pixels are connected to the third gamma voltage VGSP1, and the second type of sub-pixels are connected to the fourth gamma voltage VGSP2, and VGSP1≠VGSP2.

[0083] In order to make the first type of sub-pixel and the second type of sub-pixel have different light emitting angles, the two are different in structure. For example, the opening area of ​​the first type of sub-pixel and the second type of sub-pixel is different. If the two share the minimum gamma voltage, it is impossible to take into account the respective bright state requirements, for example, it will cause one type of sub-pixel to be not bright enough in the bright state.

[0084] In this embodiment, the minimum values ​​of the data voltages of the first and second sub-pixels of the same luminous color are different, which can flexibly meet the brightness requirements of different types of sub-pixels in their respective bright states to solve the problem of insufficient brightness of a certain type of sub-pixel in the white state.

[0085] In some embodiments, the fourth gamma voltage is greater than the third gamma voltage.

[0086] like Figure 4 As shown, VGSP2>VGSP1. Both VGSP2 and VGSP1 are greater than zero.

[0087] For example, the opening area of ​​the first type of sub-pixel of the same luminous color is larger than the opening area of ​​the second type of sub-pixel. The larger the opening area, the less likely the sub-pixel is to light up. At the same target brightness, the smaller the data voltage required for the sub-pixel with the larger opening area. In other words, the first type of sub-pixel has a large opening area, and under the same data voltage drive, the first type of sub-pixel is not easy to reach the target brightness requirement. In this embodiment, the minimum value of the data voltage of the first type of sub-pixel is relatively small, which can ensure that the first type of sub-pixel can reach the target brightness requirement, thereby avoiding the problem that the first type of sub-pixel is not bright enough in the bright state.

[0088] It should be noted that, when the opening area of ​​the first type of sub-pixel is smaller than the opening area of ​​the second type of sub-pixel, it can be designed as: VGSP2<VGSP1.

[0089] In some embodiments, the display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode, and the second type of sub-pixels emit light in both the narrow viewing angle display mode and the wide viewing angle display mode; the fourth gamma voltage includes a first sub-gamma voltage and a second sub-gamma voltage, the second type of sub-pixels are connected to the first sub-gamma voltage in the narrow viewing angle display mode, and the second type of sub-pixels are connected to the second sub-gamma voltage in the wide viewing angle display mode, and the first sub-gamma voltage and the second sub-gamma voltage are not equal.

[0090] Still Figure 5 For example, in the wide viewing angle display mode and the narrow viewing angle display mode, the second type of sub-pixels R2, G21, G22, B21, B22, and B23 all emit light.

[0091] like Figure 6 As shown, the second type of sub-pixel is connected to the first sub-gamma voltage VGSP21 in the narrow viewing angle display mode, and the second type of sub-pixel is connected to the second sub-gamma voltage VGSP22 in the wide viewing angle display mode, VGSP21≠VGSP22. VGSP21 and VGSP22 are both greater than 0, and the sum of VGSP21 and VGSP22 is greater than VGSP1.

[0092] The first sub-gamma voltage is the minimum value of the data voltage connected to the second type of sub-pixel in the narrow viewing angle display mode, and the second sub-gamma voltage is the minimum value of the data voltage connected to the second type of sub-pixel in the wide viewing angle display mode, that is, the minimum values ​​of the data voltage connected to the second type of sub-pixel in the narrow viewing angle display mode and the wide viewing angle display mode are different. Taking the minimum value of the data voltage corresponding to 255 grayscale as an example, in this embodiment, the second type of sub-pixel is connected to different minimum values ​​of the data voltage in different display modes, which can flexibly meet the different target brightness requirements of the second type of sub-pixel in different display modes.

[0093] In some embodiments, the first sub-gamma voltage is less than the second sub-gamma voltage. Figure 6 As shown, VGSP21<VGSP22.

[0094] It is understandable that in the wide viewing angle display mode, if only the second type of pixels emit light, the display requirements of the wide viewing angle cannot be met, so the first type of pixels also emit light in the wide viewing angle display mode. In the narrow viewing angle display mode, only the second type of pixels need to emit light. That is to say, in the wide viewing angle display mode, both the first type of pixels and the second type of pixels provide brightness, while in the narrow viewing angle display mode, only the second type of pixels provide brightness. The brightness provided by the second type of pixels in the narrow viewing angle display mode accounts for a larger proportion of the brightness provided in the wide viewing angle display mode. In this example, VGSP21<VGSP22, which can make the second type of pixels have a higher brightness in the narrow viewing angle display mode.

[0095] In some embodiments, the first driving parameter includes a first data voltage and a second data voltage. The first type of sub-pixel is connected to the first data voltage, and the second type of sub-pixel is connected to the second data voltage. At the same target brightness, the first data voltage and the second data voltage are not equal.

[0096] For example, the display panel is divided into grayscales of 0 to 255, and different grayscales correspond to different target brightnesses. In this example, the same target brightness refers to the target brightness corresponding to any grayscale. For example, at the target brightness corresponding to grayscale 1, the first data voltage and the second data voltage are not equal; for another example, at the target brightness corresponding to grayscale 100, the first data voltage and the second data voltage are not equal; for another example, at the target brightness corresponding to grayscale 244, the first data voltage and the second data voltage are not equal. It is understandable that at the target brightness corresponding to grayscale 0, the first data voltage is the first gamma voltage VGMP1, and the second data voltage is the second gamma voltage VGMP2. At the target brightness corresponding to grayscale 255, the first data voltage is the third gamma voltage VGSP1, and the second data voltage is the fourth gamma voltage VGSP2.

[0097] In order to make the first type of sub-pixel and the second type of sub-pixel have different light emitting angles, the two are different in structure. For example, the opening area of ​​the first type of sub-pixel and the second type of sub-pixel is different, and the difficulty of emitting light is different. If the two share the data voltage at the same target brightness, it is impossible to take into account their respective light-emitting characteristics, for example, it will cause one type of sub-pixel to fail to reach the target brightness.

[0098] In this embodiment, at the same target brightness, the different data voltages connected to the first type of sub-pixels and the second type of sub-pixels of the same luminous color can flexibly meet the luminous characteristics of different types of sub-pixels, ensuring that both types of sub-pixels can reach the required target brightness.

[0099] In some embodiments, at the same target brightness, the first data voltage is less than the second data voltage.

[0100] Taking the driving transistor of the sub-pixel as a P-type transistor as an example, the smaller the data voltage is, the greater the driving current generated by the driving transistor is, and the greater the light emitting brightness of the light emitting element is.

[0101] For example, the opening area of ​​the first type of sub-pixel of the same luminous color is larger than the opening area of ​​the second type of sub-pixel. The smaller the opening area, the easier it is for the sub-pixel to emit light. In other words, the second type of sub-pixel is easier to emit light than the first type of sub-pixel, and under the same data voltage, the second type of sub-pixel can easily achieve a higher brightness. In this embodiment, under the same target brightness, the first data voltage connected to the first type of sub-pixel is smaller, which can make up for the characteristic that the first type of sub-pixel is not easy to emit light.

[0102] It should be noted that, when the opening area of ​​the first type of sub-pixel is smaller than the opening area of ​​the second type of sub-pixel, it can be designed that: at the same target brightness, the first data voltage is greater than the second data voltage.

[0103] The above examples introduce some parameter types that the first driving parameter may include.

[0104] In other embodiments, the first type of sub-pixels and the second type of sub-pixels of the same luminous color are connected to the same second driving parameters, and the second driving parameters include at least one of the following: power supply voltage, initialization voltage, and common voltage; the initialization voltage is used to initialize the gate of the driving transistor in the sub-pixel.

[0105] For example, Figure 3 For example, transistor M3 represents a driving transistor. The first and second sub-pixels of the same luminous color share a pixel circuit, and the first and second sub-pixels of the same luminous color are connected to the same power supply voltage PVDD and initialization voltage Vref1, and the common voltage PVEE1 is equal to the common voltage PVEE2.

[0106] When the first and second sub-pixels of the same luminous color do not share a pixel circuit, the first and second sub-pixels of the same luminous color can also be connected to the same power supply voltage PVDD, initialization voltage Vref1, and common voltage.

[0107] In this example, the first type of sub-pixels and the second type of sub-pixels of the same luminous color can share a power supply voltage line, a common initialization voltage line, and a common voltage line, which is conducive to achieving a narrow frame. The power supply voltage line is used to transmit the power supply voltage PVDD, the initialization voltage line is used to transmit the initialization voltage Vref1, and the common voltage line is used to transmit the common voltage.

[0108] The display panel has a first type of pixel with a wide light emitting viewing angle and a second type of pixel with a narrow light emitting viewing angle, so that the display panel can support display modes with different viewing angles. The following is an exemplary introduction to the lighting methods of various types of pixels in some display modes.

[0109] In some embodiments, the display mode of the display panel includes a wide viewing angle display mode, and in the wide viewing angle display mode, both the first type of pixels and the second type of pixels emit light.

[0110] Still Figure 5 For example, image 5a represents a wide viewing angle display mode. In image 5a, both the first type of pixels and the second type of pixels emit light. The first type of pixels includes a red sub-pixel R1, a green sub-pixel G1, and a blue sub-pixel B1. The second type of pixels includes a red sub-pixel R2, two green sub-pixels G21 and G22, and three blue sub-pixels B21, B22, and B23.

[0111] In this example, in the wide viewing angle display mode, the second type of pixels are used for auxiliary light emission, which can improve the resolution.

[0112] In some embodiments, in a wide-viewing angle display mode, when both the first and second pixels emit light, in the wide-viewing angle display mode, the first light-emitting brightness of the first pixels and the target brightness account for a first percentage, and the second light-emitting brightness of the second pixels and the target brightness account for a second percentage, the first percentage is greater than the second percentage, and the sum of the first percentage and the second percentage is 1.

[0113] The first percentage may be 50% and less than 100%, and the second percentage may be less than 50% and greater than 0. For example, the first percentage is 60% and the second percentage is 40%; for another example, the first percentage is 80% and the second percentage is 20%; for another example, the first percentage is 90% and the second percentage is 10%.

[0114] In this embodiment, in the wide viewing angle display mode, the brightness provided by the first type of pixels accounts for a larger proportion, thereby ensuring that the display image can be observed at a large viewing angle.

[0115] In some embodiments, in a wide-viewing angle display mode, when both the first and second types of pixels emit light and the brightness proportions provided by the two are different, the first driving parameters include driving parameters corresponding to the first gamma lookup table and driving parameters corresponding to the second gamma lookup table; in a wide-viewing angle display mode, the driving parameters corresponding to the first gamma lookup table are used to drive the first type of pixels, and the driving parameters corresponding to the second gamma lookup table are used to drive the second type of pixels.

[0116] The first gamma lookup table and the second gamma lookup table are calibrated based on different gamma curves.

[0117] For example, in the wide viewing angle display mode, both the first type of pixels and the second type of pixels emit light, and the first type of pixels provide 80% brightness, and the second type of pixels provide 20% brightness. Figure 7 As shown, taking the target brightness corresponding to the grayscale of 255 as 500nit as an example, the gamma curve gamma1 indicates that the target brightness corresponding to the grayscale of 255 is 500nit, the gamma curve gamma2 indicates that the target brightness corresponding to the grayscale of 255 is 400nit, and the gamma curve gamma3 indicates that the target brightness corresponding to the grayscale of 255 is 100nit. The first type of pixels in the wide viewing angle display mode can be gamma calibrated based on the gamma curve gamma2 to obtain a first gamma lookup table; the second type of pixels in the wide viewing angle display mode can be gamma calibrated based on the gamma curve gamma3 to obtain a second gamma lookup table.

[0118] In this embodiment, the first type of pixels and the second type of pixels in the wide viewing angle display mode are driven respectively based on different gamma lookup tables, so that the first type of pixels and the second type of pixels can emit different brightness to flexibly meet their respective brightness requirements.

[0119] In some embodiments, the display mode of the display panel further includes a narrow viewing angle display mode. In the narrow viewing angle display mode, the first type of pixels does not emit light, and the second type of pixels emit light.

[0120] Still Figure 5 For example, image 5b represents a narrow viewing angle display mode. In image 5b, the first type of pixels does not emit light, and the second type of pixels emit light. The first type of pixels includes a red sub-pixel R1, a green sub-pixel G1, and a blue sub-pixel B1. The second type of pixels includes a red sub-pixel R2, two green sub-pixels G21 and G22, and three blue sub-pixels B21, B22, and B23.

[0121] In this example, in the narrow viewing angle display mode, the first type of pixels does not emit light, which can prevent the display image from being observed under a large viewing angle, thereby achieving an anti-peeping function.

[0122] In some embodiments, in a narrow viewing angle display mode, when the first type of pixels do not emit light and the second type of pixels emit light, the first driving parameters include driving parameters corresponding to a third gamma lookup table, and in the narrow viewing angle display mode, the driving parameters corresponding to the third gamma lookup table are used to drive the second type of pixels.

[0123] The third gamma lookup table and the second gamma lookup table are calibrated based on different gamma curves.

[0124] In the narrow viewing angle display mode, the first type of pixels do not emit light, the second type of pixels emit light, and the second type of pixels provide 100% brightness. Figure 7 As shown, taking the target brightness corresponding to 255 grayscale as 500nit as an example, wherein the gamma curve gamma1 indicates that the target brightness corresponding to 255 grayscale is 500nit, the second type of pixels in the narrow viewing angle display mode can be gamma calibrated based on the gamma curve gamma1 to obtain a third gamma lookup table.

[0125] In this embodiment, the second type of pixels are driven in the wide viewing angle display mode and the narrow viewing angle display mode respectively based on different gamma lookup tables, so that the second type of pixels can emit different brightness in different display modes, so as to flexibly meet the respective brightness requirements of the second type of pixels in different display modes.

[0126] In some embodiments, in a wide-viewing angle display mode, when both the first and second types of pixels emit light, the first driving parameter includes a first light-emitting control signal and a second light-emitting control signal, the first effective pulse of the first light-emitting control signal is used to control the first type of sub-pixels to emit light, and the second effective pulse of the second light-emitting control signal is used to control the second type of sub-pixels to emit light; in a screen refresh cycle in the wide-viewing angle display mode, the number of the first effective pulses and the number of the second effective pulses are not equal.

[0127] For example, Figure 8 Specifically shows a timing diagram of the first light emitting control signal Emit1 and the second light emitting control signal Emit2 in the wide viewing angle display mode, Figure 8 Taking the example that the effective pulses of the first light-emitting control signal Emit1 and the second light-emitting control signal Emit2 are both low level, when the first light-emitting control signal Emit1 is low level, the first type of sub-pixel emits light, and when the first light-emitting control signal Emit1 is high level, the first type of sub-pixel does not emit light; when the second light-emitting control signal Emit2 is low level, the second type of sub-pixel emits light, and when the second light-emitting control signal Emit2 is high level, the second type of sub-pixel does not emit light.

[0128] In one picture refresh period T of the wide viewing angle display mode, the first light emitting control signal Emit1 may include a plurality of first effective pulses, and the second light emitting control signal Emit2 may include a plurality of second effective pulses.

[0129] The number of effective pulses of the light-emitting control signal can control the brightness of the sub-pixel. In this embodiment, the number of effective pulses of the first light-emitting control signal and the second light-emitting control signal are different, which can easily meet the different brightness requirements of the first type of sub-pixels and the second type of sub-pixels.

[0130] In some embodiments, in one frame refresh cycle of the wide viewing angle display mode, the number of the first valid pulses is greater than the number of the second valid pulses.

[0131] In order to make the first type of sub-pixel and the second type of sub-pixel have different light emitting angles, the two have different structures. For example, the opening area of ​​the first type of sub-pixel is larger than the opening area of ​​the second type of sub-pixel, and the second type of sub-pixel with a smaller opening area is more susceptible to other interference and is more likely to be secretly lit. In this embodiment, within a picture refresh cycle, the number of effective pulses of the second light control signal is smaller, thereby improving the problem that the second type of sub-pixel is easy to be secretly lit.

[0132] In some embodiments, in a wide-viewing angle display mode, when both the first and second types of pixels emit light, the first driving parameter includes a first light-emitting control signal and a second light-emitting control signal, the first effective pulse of the first light-emitting control signal is used to control the first type of sub-pixels to emit light, and the second effective pulse of the second light-emitting control signal is used to control the second type of sub-pixels to emit light; in at least part of a period of time within a screen refresh cycle in the wide-viewing angle display mode, the first effective pulse and the second effective pulse alternate.

[0133] Still Figure 8 For example, a picture refresh cycle T in the wide viewing angle display mode includes a first period T1 and a second period T2. In the second period T2, the first effective pulse of the first light-emitting control signal Emit1 and the second effective pulse of the second light-emitting control signal Emit2 are alternated. When the effective pulses of the two overlap, the first type of sub-pixel and the second type of sub-pixel emit light alternately. In the same period, only one type of sub-pixel emits light, which can avoid excessive brightness flickering, thereby avoiding eye fatigue.

[0134] It should be noted that Figure 8 The number of the first effective pulse of the first light-emitting control signal Emit1 and the second effective pulse of the second light-emitting control signal Emit2 and the duration of the effective pulses are merely illustrative and are not intended to limit the present application.

[0135] The above example introduces the first lighting mode: in the wide viewing angle display mode, both the first type of pixels and the second type of pixels emit light; in the narrow viewing angle display mode, the first type of pixels do not emit light, and the second type of pixels emit light.

[0136] In some other embodiments, the display panel can also display based on the second lighting mode. Specifically, the display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode; in the narrow viewing angle display mode, the first type of pixels does not emit light, and the second type of pixels emit light; in the wide viewing angle display mode, the first type of pixels emit light, and the second type of pixels does not emit light.

[0137] For example, Fig. 9 As shown, take the example that the first type of pixels includes a red sub-pixel R1, a green sub-pixel G1 and a blue sub-pixel B1, the second type of pixels includes a red sub-pixel R2, two green sub-pixels G21 and G22, and three blue sub-pixels B21, B22 and B23. Fig. 9 Image 9a in the figure represents a wide viewing angle display mode, and image 9b represents a narrow viewing angle display mode. Fig. 9For the same sub-pixel, the sub-pixel filled with black indicates a non-luminous sub-pixel, and the sub-pixel filled with white indicates a luminous sub-pixel. As shown in image 9a, in the wide viewing angle display mode, the first sub-pixels R1, G1, and B1 emit light, and the second sub-pixels R2, G21, G22, B21, B22, and B23 do not emit light. As shown in image 9b, in the narrow viewing angle display mode, the first sub-pixels R1, G1, and B1 do not emit light, and the second sub-pixels R2, G21, G22, B21, B22, and B23 emit light.

[0138] In this embodiment, in one display mode, only one type of pixel needs to be lit, so only two groups of gamma driving parameters need to be set for driving, which simplifies the driving timing.

[0139] In some embodiments, in the second lighting mode, the first driving parameters include driving parameters corresponding to the fourth gamma lookup table and driving parameters corresponding to the fifth gamma lookup table; in the narrow viewing angle display mode, the driving parameters corresponding to the fourth gamma lookup table are used to drive the second type of pixels; in the wide viewing angle display mode, the driving parameters corresponding to the fifth gamma lookup table are used to drive the first type of pixels.

[0140] The fourth gamma lookup table and the fifth gamma lookup table may be calibrated based on the same gamma curve.

[0141] In the wide viewing angle display mode, the first type of pixels provide 100% brightness; in the narrow viewing angle display mode, the second type of pixels provide 100% brightness. Figure 7 As shown, taking the target brightness corresponding to 255 grayscale as 500nit as an example, the first type of pixels in the wide viewing angle display mode can be gamma calibrated based on the gamma curve gamma1 to obtain the fourth gamma lookup table, and the second type of pixels in the narrow viewing angle display mode can be gamma calibrated based on the gamma curve gamma1 to obtain the fifth gamma lookup table.

[0142] Due to the difference in structure between the first type of pixels and the second type of pixels, the fourth gamma lookup table and the fifth gamma lookup table may be different.

[0143] In this embodiment, the first type of pixels in the wide viewing angle display mode and the second type of pixels in the narrow viewing angle display mode are driven respectively based on different gamma lookup tables, which can flexibly meet the brightness requirements of the first type of pixels and the second type of pixels.

[0144] Based on the same technical concept, an embodiment of the present application also provides a driving chip for driving the display panel described in any of the above embodiments, the display panel comprising: a first type of pixels and a second type of pixels, the light emitting viewing angle of the first type of pixels is a first viewing angle, the light emitting viewing angle of the second type of pixels is a second viewing angle, and the first viewing angle is greater than the second viewing angle; the first type of pixels comprises first type sub-pixels of multiple luminous colors, and the second type of pixels comprises second type sub-pixels of multiple luminous colors.

[0145] The driving chip is used to provide different first driving parameters to the first type of sub-pixels and the second type of sub-pixels of the same luminous color.

[0146] According to the driver chip provided in the embodiment of the present application, the driver chip is used to drive the display panel, and the display panel includes first-category pixels and second-category pixels with different light emitting viewing angles, so that the display panel can support display modes with different viewing angles, and the first-category sub-pixels and the second-category sub-pixels of the same luminous color are connected to different first driving parameters, so that the first-category sub-pixels and the second-category sub-pixels of the same luminous color can be driven separately based on different first driving parameters. Compared with the related art that uses the same driving parameters to drive the first-category sub-pixels and the second-category sub-pixels of different viewing angles and cannot simultaneously meet the respective needs of the two types of sub-pixels, the embodiment of the present application can take into account the respective needs of the two types of sub-pixels, thereby solving the technical problem in the related art that there is a large brightness difference when switching display modes with different viewing angles.

[0147] In some embodiments, the first driving parameter includes a first reset voltage and a second reset voltage, and the driving chip is specifically used to: provide the first reset voltage to the first light-emitting element of the first type of sub-pixel, and provide the second reset voltage to the second light-emitting element of the second type of sub-pixel.

[0148] In some embodiments, the driving chip is specifically used to: provide a first common voltage to a first type of sub-pixels, provide a second common voltage to a second type of sub-pixels, and at the same target brightness, control the absolute value of the difference between the first reset voltage and the first common voltage to be greater than the absolute value of the difference between the second reset voltage and the second common voltage.

[0149] In some embodiments, the first driving parameter includes a first gamma voltage and a second gamma voltage, and the driving chip is specifically used to: provide a first gamma voltage to a first type of sub-pixel, and provide a second gamma voltage to a second type of sub-pixel, the first gamma voltage is the maximum value of the data voltage connected to the first type of sub-pixel, and the second gamma voltage is the maximum value of the data voltage connected to the second type of sub-pixel.

[0150] In some embodiments, the second gamma voltage is greater than the first gamma voltage.

[0151] In some embodiments, the display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode, and the driving chip is specifically used to: control the second type of sub-pixels to emit light in both the narrow viewing angle display mode and the wide viewing angle display mode, and provide the same second gamma voltage to the second type of sub-pixels in both the narrow viewing angle display mode and the wide viewing angle display mode.

[0152] In some embodiments, the first driving parameter includes a third gamma voltage and a fourth gamma voltage, the third gamma voltage is provided to the first type of sub-pixels, and the fourth gamma voltage is provided to the second type of sub-pixels, the third gamma voltage is the minimum value of the data voltage connected to the first type of sub-pixels, and the fourth gamma voltage is the minimum value of the data voltage connected to the second type of sub-pixels.

[0153] In some embodiments, the fourth gamma voltage is greater than the third gamma voltage.

[0154] In some embodiments, the display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode, and the driving chip is specifically used to: control the second type of sub-pixels to emit light in both the narrow viewing angle display mode and the wide viewing angle display mode;

[0155] The fourth gamma voltage includes a first sub-gamma voltage and a second sub-gamma voltage. The driving chip is specifically used to: provide the first sub-gamma voltage to the second type of sub-pixels in a narrow viewing angle display mode, and provide the second sub-gamma voltage to the second type of sub-pixels in a wide viewing angle display mode. The first sub-gamma voltage and the second sub-gamma voltage are not equal.

[0156] In some embodiments, the first sub-gamma voltage is less than the second sub-gamma voltage.

[0157] In some embodiments, the first driving parameter includes a first data voltage and a second data voltage, and the driving chip is specifically used to: provide the first data voltage to the first type of sub-pixel, provide the second data voltage to the second type of sub-pixel, and control the first data voltage and the second data voltage to be unequal at the same target brightness.

[0158] In some embodiments, at the same target brightness, the first data voltage is less than the second data voltage.

[0159] In some embodiments, the opening area of ​​the first type of sub-pixels of the same luminous color is larger than the opening area of ​​the second type of sub-pixels.

[0160] In some embodiments, the display mode of the display panel includes a wide viewing angle display mode, and the driving chip is specifically used to: in the wide viewing angle display mode, control both the first type of pixels and the second type of pixels to emit light.

[0161] In some embodiments, the driving chip is specifically used to: in a wide-viewing angle display mode, control the first luminous brightness of the first type of pixels to account for a first percentage of the target brightness, control the second luminous brightness of the second type of pixels to account for a second percentage of the target brightness, the first percentage is greater than the second percentage, and the sum of the first percentage and the second percentage is 1.

[0162] In some embodiments, the first driving parameters include driving parameters corresponding to a first gamma lookup table and driving parameters corresponding to a second gamma lookup table;

[0163] The driving chip is specifically used to: in the wide viewing angle display mode, drive the first type of pixels based on the driving parameters corresponding to the first gamma lookup table, and drive the second type of pixels based on the driving parameters corresponding to the second gamma lookup table.

[0164] In some embodiments, the first driving parameter includes a first light emitting control signal and a second light emitting control signal, wherein a first effective pulse of the first light emitting control signal is used to control the first type of sub-pixel to emit light, and a second effective pulse of the second light emitting control signal is used to control the second type of sub-pixel to emit light;

[0165] The driving chip is specifically used to control the number of the first effective pulses and the number of the second effective pulses to be unequal during a picture refresh cycle in the wide viewing angle display mode.

[0166] In some embodiments, in one frame refresh cycle of the wide viewing angle display mode, the number of the first valid pulses is greater than the number of the second valid pulses.

[0167] In some embodiments, the first driving parameter includes a first light emitting control signal and a second light emitting control signal, wherein a first effective pulse of the first light emitting control signal is used to control the first type of sub-pixel to emit light, and a second effective pulse of the second light emitting control signal is used to control the second type of sub-pixel to emit light;

[0168] The driving chip is specifically used to control the alternation of the first effective pulse and the second effective pulse in at least a partial period of a picture refresh cycle in the wide viewing angle display mode.

[0169] In some embodiments, the display mode of the display panel also includes a narrow viewing angle display mode, and the driving chip is specifically used to: in the narrow viewing angle display mode, control the first type of pixels not to emit light and the second type of pixels to emit light.

[0170] In some embodiments, the first driving parameters include driving parameters corresponding to a third gamma lookup table, and the driving chip is specifically used to: drive the second type of pixels based on the driving parameters corresponding to the third gamma lookup table in a narrow viewing angle display mode.

[0171] In some embodiments, the display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode; the driving chip is specifically used for:

[0172] In the narrow viewing angle display mode, the first type of pixels are controlled not to emit light, and the second type of pixels are controlled to emit light;

[0173] In the wide viewing angle display mode, the first type of pixels are controlled to emit light, and the second type of pixels are controlled not to emit light.

[0174] In some embodiments, the first driving parameters include driving parameters corresponding to the fourth gamma lookup table and driving parameters corresponding to the fifth gamma lookup table;

[0175] The driving chip is specifically used to: drive the second type of pixels based on the driving parameters corresponding to the fourth gamma lookup table in the narrow viewing angle display mode;

[0176] In the wide viewing angle display mode, the first type of pixels are driven based on the driving parameters corresponding to the fifth gamma lookup table.

[0177] In some embodiments, the driving chip is specifically used to: provide the same second driving parameters to the first type of sub-pixels and the second type of sub-pixels of the same luminous color, and the second driving parameters include at least one of the following: power supply voltage, initialization voltage, common voltage; the initialization voltage is used to initialize the gate of the driving transistor in the sub-pixel.

[0178] The present application also provides a display device, including the display panel provided by the present application. Fig.10 , Fig.10 It is a structural schematic diagram of a display device provided in an embodiment of the present application. Fig.10 The provided display device 1000 includes a display panel 100 and a driving chip 200 . The display panel 100 includes the display panel provided by any of the above embodiments of the present application, and the driving chip 200 includes the driving chip provided by any of the above embodiments. Fig.10 The embodiment only takes a mobile phone as an example to illustrate the display device 1000. It can be understood that the display device provided in the embodiment of the present application can be a wearable product, a computer, a television, a car display device, or other display devices with display functions, and the present application does not make specific restrictions on this. The display device provided in the embodiment of the present application has the beneficial effects of the display panel provided in the embodiment of the present application. For details, please refer to the specific description of the display panel in the above embodiments, and this embodiment will not be repeated here.

[0179] According to the embodiments described above in the present application, these embodiments do not describe all the details in detail, nor do they limit the present application to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: A first type of pixel and a second type of pixel, wherein the light emitting viewing angle of the first type of pixel is a first viewing angle, the light emitting viewing angle of the second type of pixel is a second viewing angle, and the first viewing angle is greater than the second viewing angle; The first type of pixels includes first type of sub-pixels of multiple luminous colors, and the second type of pixels includes second type of sub-pixels of multiple luminous colors; The first driving parameters connected to the first type of sub-pixels and the second type of sub-pixels of the same luminous color are different.

2. The display panel according to claim 1, characterized in that: The first driving parameter includes a first reset voltage and a second reset voltage, the first reset voltage is used to reset the first light-emitting element of the first type of sub-pixel, and the second reset voltage is used to reset the second light-emitting element of the second type of sub-pixel.

3. The display panel according to claim 2, characterized in that: The first type of sub-pixels are connected to a first common voltage, and the second type of sub-pixels are connected to a second common voltage. At the same target brightness, the absolute value of the difference between the first reset voltage and the first common voltage is greater than the absolute value of the difference between the second reset voltage and the second common voltage.

4. The display panel according to claim 1, characterized in that: The first driving parameter includes a first gamma voltage and a second gamma voltage, the first gamma voltage being the maximum value of the data voltage connected to the first type of sub-pixels, and the second gamma voltage being the maximum value of the data voltage connected to the second type of sub-pixels.

5. The display panel according to claim 4, characterized in that: The second gamma voltage is greater than the first gamma voltage.

6. The display panel according to claim 5, characterized in that: The display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode, the second type of sub-pixels emit light in both the narrow viewing angle display mode and the wide viewing angle display mode, and the second type of sub-pixels are connected to the same second gamma voltage in both the narrow viewing angle display mode and the wide viewing angle display mode.

7. The display panel according to claim 1, characterized in that: The first driving parameter includes a third gamma voltage and a fourth gamma voltage, the third gamma voltage being a minimum value of the data voltage connected to the first type of sub-pixels, and the fourth gamma voltage being a minimum value of the data voltage connected to the second type of sub-pixels.

8. The display panel according to claim 7, characterized in that: The fourth gamma voltage is greater than the third gamma voltage.

9. The display panel according to claim 7, characterized in that: The display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode, and the second type of sub-pixels emit light in both the narrow viewing angle display mode and the wide viewing angle display mode; The fourth gamma voltage includes a first sub-gamma voltage and a second sub-gamma voltage, the second type of sub-pixels are connected to the first sub-gamma voltage in the narrow viewing angle display mode, the second type of sub-pixels are connected to the second sub-gamma voltage in the wide viewing angle display mode, and the first sub-gamma voltage and the second sub-gamma voltage are not equal.

10. The display panel according to claim 9, characterized in that: The first sub-gamma voltage is lower than the second sub-gamma voltage.

11. The display panel according to claim 1, characterized in that: The first driving parameter includes a first data voltage and a second data voltage. The first type of sub-pixel is connected to the first data voltage, and the second type of sub-pixel is connected to the second data voltage. At the same target brightness, the first data voltage and the second data voltage are not equal.

12. The display panel according to claim 11, characterized in that: At the same target brightness, the first data voltage is smaller than the second data voltage.

13. The display panel according to any one of claims 1 to 12, characterized in that: The opening area of ​​the first type of sub-pixels with the same luminous color is larger than the opening area of ​​the second type of sub-pixels.

14. The display panel according to claim 1, characterized in that: The display mode of the display panel includes a wide viewing angle display mode. In the wide viewing angle display mode, both the first-type pixels and the second-type pixels emit light.

15. The display panel according to claim 14, characterized in that: In the wide-viewing angle display mode, the first luminous brightness of the first type of pixels and the target brightness account for a first percentage, the second luminous brightness of the second type of pixels and the target brightness account for a second percentage, the first percentage is greater than the second percentage, and the sum of the first percentage and the second percentage is 1.

16. The display panel according to claim 15, characterized in that: The first driving parameters include driving parameters corresponding to a first gamma lookup table and driving parameters corresponding to a second gamma lookup table; In the wide viewing angle display mode, the driving parameters corresponding to the first gamma lookup table are used to drive the first type of pixels, and the driving parameters corresponding to the second gamma lookup table are used to drive the second type of pixels.

17. The display panel according to claim 14, characterized in that: The first driving parameter includes a first light-emitting control signal and a second light-emitting control signal, wherein a first effective pulse of the first light-emitting control signal is used to control the first type of sub-pixel to emit light, and a second effective pulse of the second light-emitting control signal is used to control the second type of sub-pixel to emit light; In one picture refresh cycle of the wide viewing angle display mode, the number of the first effective pulses is not equal to the number of the second effective pulses.

18. The display panel according to claim 17, characterized in that: In one picture refresh cycle of the wide viewing angle display mode, the number of the first valid pulses is greater than the number of the second valid pulses.

19. The display panel according to claim 14, characterized in that: The first driving parameter includes a first light-emitting control signal and a second light-emitting control signal, wherein a first effective pulse of the first light-emitting control signal is used to control the first type of sub-pixel to emit light, and a second effective pulse of the second light-emitting control signal is used to control the second type of sub-pixel to emit light; During at least a partial period of a picture refresh cycle of the wide viewing angle display mode, the first effective pulse and the second effective pulse alternate.

20. The display panel according to claim 14, characterized in that: The display mode of the display panel further includes a narrow viewing angle display mode. In the narrow viewing angle display mode, the first type of pixels does not emit light, and the second type of pixels emit light.

21. The display panel according to claim 20, characterized in that: The first driving parameters include driving parameters corresponding to a third gamma lookup table. In the narrow viewing angle display mode, the driving parameters corresponding to the third gamma lookup table are used to drive the second type of pixels.

22. The display panel according to claim 1, characterized in that: The display mode of the display panel includes a narrow viewing angle display mode and a wide viewing angle display mode; In the narrow viewing angle display mode, the first type of pixels do not emit light, and the second type of pixels emit light; In the wide viewing angle display mode, the first type of pixels emit light, and the second type of pixels do not emit light.

23. The display panel according to claim 22, characterized in that: The first driving parameters include driving parameters corresponding to the fourth gamma lookup table and driving parameters corresponding to the fifth gamma lookup table; In the narrow viewing angle display mode, the driving parameters corresponding to the fourth gamma lookup table are used to drive the second type of pixels; In the wide viewing angle display mode, the driving parameters corresponding to the fifth gamma lookup table are used to drive the first type of pixels.

24. The display panel according to claim 1, characterized in that: The first type of sub-pixels and the second type of sub-pixels of the same luminous color are connected to the same second driving parameter, and the second driving parameter includes at least one of the following: power supply voltage, initialization voltage, common voltage; The initialization voltage is used to initialize the gate of the driving transistor in the sub-pixel.

25. A driver chip for driving a display panel, characterized in that: The display panel comprises: a first type of pixels and a second type of pixels, wherein the light emitting viewing angle of the first type of pixels is a first viewing angle, and the light emitting viewing angle of the second type of pixels is a second viewing angle, and the first viewing angle is greater than the second viewing angle; the first type of pixels comprises first type of sub-pixels of multiple luminous colors, and the second type of pixels comprises second type of sub-pixels of multiple luminous colors; The driving chip is used to provide different first driving parameters to the first type of sub-pixels and the second type of sub-pixels of the same luminous color.

26. A display device, characterized in that: include: The display panel according to any one of claims 1 to 23; And, the driving chip as claimed in claim 25.

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