Display device and driving module and driving method thereof

Abstract

The invention provides a display device and a driving module and a driving method thereof, and belongs to the technical field of display. The driving method of the display device comprises the following steps: determining monochromatic pixels according to picture data; in each sub-pixel of the monochromatic pixel, only one color of sub-pixel emits light; determining a black state voltage compensation value of a corrected sub-pixel of the monochromatic pixel according to a black state voltage compensation table and the gray-scale value of a light-emitting sub-pixel in the monochromatic pixel; the correction sub-pixels are located in the monochromatic pixels and do not emit light; and driving the corrected sub-pixel according to the black state voltage compensation value of the corrected sub-pixel. According to the display device driving method, the display effect of the monochromatic pixel under low gray scale and low brightness can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display device and a driving module and a driving method thereof. Background Art

[0002] OLED (organic light-emitting diode) displays are increasingly used in high-end consumer electronic products. For example, more and more high-end flagship mobile phones use OLED displays. Consumers are paying more and more attention to the display effect of the screen, especially the color saturation under low brightness display.

[0003] The mainstream process for preparing OLED displays is the evaporation process, which deposits the light-emitting material into the corresponding pixel openings through a precision metal mask (FMM). The opening spacing on the precision metal mask is small, and the overlap between the organic layers during the evaporation process can easily cause poor effects such as missing low-brightness and low-grayscale monochrome images, excessive faults in monochrome grayscale values, and large black areas on the screen when watching movies in a dark environment, affecting the customer experience.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and provide a display device and a driving module and a driving method thereof to improve the display effect.

[0006] According to a first aspect of the present disclosure, there is provided a method for driving a display device, comprising:

[0007] Determine a monochrome pixel according to the picture data; in each sub-pixel of the monochrome pixel, only a sub-pixel of one color emits light;

[0008] Determining a black state voltage compensation value of a correction sub-pixel of the monochrome pixel according to a black state voltage compensation table and a grayscale value of a light-emitting sub-pixel in the monochrome pixel; the correction sub-pixel is located in the monochrome pixel and does not emit light;

[0009] The correction sub-pixel is driven according to the black state voltage compensation value of the correction sub-pixel.

[0010] According to an embodiment of the present disclosure, in the monochrome pixel, at least part of the correction sub-pixels are adjacent to the light-emitting sub-pixels.

[0011] According to one embodiment of the present disclosure, the pixel includes multiple second sub-pixels, and includes a first sub-pixel and a third sub-pixel adjacent to at least one second sub-pixel; when at least one second sub-pixel in the monochrome pixel emits light, at least one of the first sub-pixel and the third sub-pixel serves as the correction sub-pixel.

[0012] According to one embodiment of the present disclosure, the pixel includes a first sub-pixel and a third sub-pixel, and includes a second sub-pixel located between the first sub-pixel and the third sub-pixel; in a monochrome pixel in which the first sub-pixel serves as a light-emitting sub-pixel, the third sub-pixel does not serve as a correction sub-pixel of the monochrome pixel; in a monochrome pixel in which the third sub-pixel serves as a light-emitting sub-pixel, the first sub-pixel does not serve as a correction sub-pixel of the monochrome pixel.

[0013] According to an embodiment of the present disclosure, the pixel includes at least three sub-pixels of different colors; in the monochrome pixel, the sub-pixels with a color different from that of the luminous sub-pixel are all correction sub-pixels of the monochrome pixel.

[0014] According to one embodiment of the present disclosure, the black state voltage compensation table includes multiple sub-compensation tables corresponding to the colors of the light-emitting sub-pixels respectively; any sub-compensation table includes multiple compensation parameter groups, and any compensation parameter group includes the grayscale value of the light-emitting sub-pixel in the monochrome pixel and the black state voltage compensation value of the correction sub-pixel in the monochrome pixel.

[0015] According to an embodiment of the present disclosure, the compensation parameter group of the sub-compensation table includes a plurality of binding point compensation parameter groups, and the binding point compensation parameter groups include binding point grayscale values ​​of light-emitting sub-pixels and binding point black state voltage compensation values ​​of correction sub-pixels;

[0016] The determining of the black state voltage compensation value of the correction sub-pixel comprises:

[0017] When determining the black state voltage compensation value of at least part of the correction sub-pixel, the black state voltage compensation value of the correction sub-pixel is determined by linear interpolation method according to two binding point compensation parameter groups and the grayscale value of the luminescent sub-pixel.

[0018] According to a second aspect of the present disclosure, a driving module of a display device is provided, comprising:

[0019] A detection unit, used for determining a monochrome pixel according to the picture data; among the sub-pixels of the monochrome pixel, only a sub-pixel of one color emits light;

[0020] A compensation unit, configured to determine a black state voltage compensation value of a correction sub-pixel of the monochrome pixel according to a black state voltage compensation table and a grayscale value of a light-emitting sub-pixel in the monochrome pixel; the correction sub-pixel is located in the monochrome pixel and does not emit light;

[0021] A driving unit is used to drive the correction sub-pixel according to the black state voltage compensation value of the correction sub-pixel.

[0022] According to an embodiment of the present disclosure, the driving module further includes:

[0023] A voltage determination unit, used to determine a driving voltage value of a non-corrected sub-pixel according to a grayscale value of the non-corrected sub-pixel;

[0024] The driving unit comprises:

[0025] A latch subunit, used for storing the black state voltage compensation value of the correction sub-pixel and the driving voltage value of the non-correction sub-pixel;

[0026] The conversion subunit is used to generate the analog driving voltage of the correction subpixel according to the black state voltage compensation value of the correction subpixel, and to generate the analog driving voltage of the non-correction subpixel according to the driving voltage value of the non-correction subpixel.

[0027] According to a third aspect of the present disclosure, a display device is provided, comprising the above-mentioned driving module.

[0028] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0030] Figure 1 It is a schematic structural diagram of a display device in one embodiment of the present disclosure.

[0031] Figure 2 FIG. 1 is a schematic diagram of the structure of a display panel in one embodiment of the present disclosure.

[0032] Figure 3 FIG. 1 is a schematic diagram of the structure of a display panel in one embodiment of the present disclosure.

[0033] Figure 4 This is an example diagram of an equivalent circuit of an OLED display panel in the related art.

[0034] Figure 5 This is a graph showing the test results of the luminous performance of a red sub-pixel under different luminous environments in the related art.

[0035] Figure 6 The figure is a flowchart of a method for driving a display device in one embodiment of the present disclosure.

[0036] Figure 7 FIG. 1 is a schematic diagram of the structure of a pixel in one embodiment of the present disclosure.

[0037] Figure 8 FIG. 1 is a schematic diagram of the structure of a pixel in one embodiment of the present disclosure.

[0038] Fig. 9 This is a schematic diagram of the principle of a driving module in one embodiment of the present disclosure.

[0039] Fig.10 It is a schematic diagram of a process of obtaining a first compensation parameter group in a first sub-compensation table in one embodiment of the present disclosure.

[0040] Fig.11 It is a schematic diagram of a process of obtaining a second compensation parameter group in a second sub-compensation table in one embodiment of the present disclosure.

[0041] Fig.12 It is a schematic diagram of a process of obtaining a third compensation parameter group in a third sub-compensation table in one implementation manner of the present disclosure. DETAILED DESCRIPTION

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0043] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0044] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0045] The present disclosure provides a display device and a driving method of the display device to improve the display effect of the display device.

[0046] See also Figure 1 The display device includes a display panel PNL and a driving module CTR for driving the display panel PNL. The driving module CTR can drive the display panel PNL to display a picture according to a signal provided by an external circuit, such as a provided video signal or picture data.

[0047] Alternatively, see Figure 2 The display panel PNL includes a display area AA and a peripheral area BB located at least on one side of the display area AA. In the display area AA, the display panel PNL is provided with array-distributed display units DU, and the display units DU include sub-pixels PX and pixel driving circuits PDC driving the sub-pixels PX. The display panel PNL does not provide display units DU in the peripheral area BB, or the provided display units DU are not used to display images.

[0048] In one example, see Figure 2 , the display panel PNL is provided with a plurality of scan lines GL extending along the row direction DH in the display area AA, and each scan line GL is provided in one-to-one correspondence with each display unit row. The pixel driving circuit PDC of each display unit DU of the display unit row is electrically connected to the corresponding scan line GL. The display panel PNL is also provided with a plurality of data lines DL extending along the column direction DV in the display area AA, and each data line DL is provided in one-to-one correspondence with each display unit column. The pixel driving circuit PDC of each display unit DU of the display unit column is electrically connected to the corresponding data line DL. In this way, the pixel driving circuit PDC of each display unit DU is connected to one scan line GL and one data line DL. When a scan signal is loaded on the scan line GL, the driving voltage loaded on the data line DL can be written into the pixel driving circuit PDC, so that the pixel driving circuit PDC can control the brightness of the sub-pixel PX according to the written driving voltage.

[0049] In one embodiment of the present disclosure, the driving module CTR is configured to drive each pixel row row by row according to the input picture data. When driving any pixel row, the analog driving voltage required by the sub-pixels of the pixel row is loaded onto the data line DL electrically connected to the sub-pixels.

[0050] In the embodiment of the present disclosure, the sub-pixels in the display panel PNL are thin-film self-luminous light-emitting elements LD, such as OLED, PLED, QLED, etc. Further, the sub-pixels PX located in the display area AA include sub-pixels PX of multiple different colors; any pixel may include sub-pixels PX of multiple different colors, so that the pixel can emit color light by mixing light.

[0051] In one example, see Figure 8 The pixel includes three sub-pixels PX of different colors, namely a first sub-pixel PR, a second sub-pixel PG and a third sub-pixel PB. For example, the pixel includes a first sub-pixel PR, a second sub-pixel PG and a third sub-pixel PB arranged in sequence along a row direction DH.

[0052] In another example, see Figure 7 , the pixel includes multiple sub-pixels PX such as at least one first sub-pixel PR, multiple second sub-pixels PG and at least one third sub-pixel PB; for example, the pixel includes a first sub-pixel PR, a second sub-pixel PG, a third sub-pixel PB and a second sub-pixel PG arranged in sequence along a row direction DH. Further, the light emitting area of ​​the second sub-pixel PG is smaller than that of the first sub-pixel PR and the third sub-pixel PB.

[0053] In the above example, the pixel includes three sub-pixels PX of different colors, namely, a first sub-pixel PR, a second sub-pixel PG and a third sub-pixel PB. It is understood that in other embodiments of the present disclosure, the pixel may also include only two sub-pixels PX of different colors, or include four or more sub-pixels PX of different colors.

[0054] In one example, the first sub-pixel PR is a red sub-pixel for emitting red light.

[0055] In an example, the second sub-pixel PG is a green sub-pixel for emitting green light.

[0056] In an example, the third sub-pixel PB is a blue sub-pixel for emitting blue light.

[0057] It is understandable that any one of the first sub-pixel PR, the second sub-pixel PG, and the third sub-pixel PB can also be a sub-pixel PX emitting light of other colors, rather than being limited to a red sub-pixel, a green sub-pixel, or a blue sub-pixel. It is also understandable that, if necessary, the pixel also includes a sub-pixel PX for emitting light of other colors; for example, some sub-pixels on the display panel PNL can be yellow sub-pixels for emitting yellow light, cyan sub-pixels for emitting cyan light, white sub-pixels for emitting white light, etc.

[0058] See also Figure 3 In one embodiment of the present disclosure, the display panel PNL may include an SBT, a driving layer DRL, and a pixel layer PXL which are stacked in sequence; the pixel layer PXL is provided with a light emitting element LD as a sub-pixel PX, and the driving layer DRL is used to drive the sub-pixel PX in the pixel layer PXL. The driving layer DRL may drive each sub-pixel PX in an active driving manner or in a passive driving manner.

[0059] As an example, see Figure 3 The driving layer DRL is provided with a pixel driving circuit for driving the sub-pixels PX; each sub-pixel PX can emit light to display a picture under the drive of the pixel driving circuit. Further, the display panel PNL also includes a thin film encapsulation layer TFE located on a side of the pixel layer PXL away from the driving layer DRL, and the thin film encapsulation layer TFE can encapsulate and protect the pixel layer PXL.

[0060] Optionally, SBT can be a substrate substrate of an inorganic material, or a substrate substrate of an organic material; of course, it can also be a composite substrate formed by stacking a substrate substrate of an inorganic material and a substrate substrate of an organic material. For example, in some embodiments of the present disclosure, the material of SBT can be glass materials such as soda-lime glass, quartz glass, and sapphire glass. In some other embodiments of the present disclosure, the material of SBT can be polymethyl methacrylate, polyvinyl alcohol, polyvinyl phenol, polyether sulfone, polyimide, polyamide, polyacetal, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, or a combination thereof. In some other embodiments of the present disclosure, SBT can also be a flexible substrate substrate, for example, the material of SBT can include polyimide.

[0061] Optionally, in the driving layer DRL, any pixel driving circuit may include a thin film transistor TFT and a storage capacitor. Further, the thin film transistor TFT may be selected from a top gate thin film transistor, a bottom gate thin film transistor or a double gate thin film transistor; the material of the active layer of the thin film transistor may be an amorphous silicon semiconductor material, a low temperature polycrystalline silicon semiconductor material, a metal oxide semiconductor material, an organic semiconductor material, a carbon nanotube semiconductor material or other types of semiconductor materials; the thin film transistor may be an N-type thin film transistor or a P-type thin film transistor.

[0062] It is understandable that, among the transistors in the pixel driving circuit, the types of any two transistors may be the same or different. Exemplarily, in some embodiments, in a pixel driving circuit, some transistors may be N-type transistors and some transistors may be P-type transistors. Again exemplarily, in other embodiments, in a pixel driving circuit, the material of the active layer of some transistors may be a low-temperature polysilicon semiconductor material, and the material of the active layer of some transistors may be a metal oxide semiconductor material. In some embodiments of the present disclosure, the thin film transistor is a low-temperature polysilicon transistor. In some other embodiments of the present disclosure, some thin film transistors are low-temperature polysilicon transistors, and some thin film transistors are metal oxide transistors.

[0063] Optionally, the driving layer DRL may include a semiconductor layer SCL, a gate insulating layer GI, a gate layer GT, an interlayer dielectric layer ILD, a source-drain metal layer SD, a planarization layer PLN, etc. stacked between the SBT and the pixel layer PXL. Each thin film transistor and storage capacitor can be formed by a semiconductor layer SCL, a gate insulating layer GI, a gate layer GT, an interlayer dielectric layer ILD, a source-drain metal layer SD, and other film layers; of course, other film layers can also be used. Among them, the positional relationship of each film layer can be determined according to the film layer structure of the thin film transistor. Further, the semiconductor layer SCL can be used to form the channel region of the transistor (as part of the active layer), and when necessary, it can also be formed by conductorization to form part of the wiring or conductive structure. The gate layer can be used to form one or more of the gate layer wirings such as the scanning wiring, the reset control wiring, and the light emitting control wiring, and can also be used to form the gate of the transistor, and can also be used to form part or all of the electrode plates of the storage capacitor. The source-drain metal layer can be used to form source-drain metal layer wirings such as data wiring and driving power supply voltage wiring, and can also be used to form part of the electrode plates of the storage capacitor. Of course, in other embodiments of the present disclosure, the driving layer DRL may further include other film layers as needed, for example, it may further include a light shielding layer located between the semiconductor layer SCL and SBT. As needed, any of the above-mentioned film layers such as the semiconductor layer SCL, the gate layer GT, the source-drain metal layer SD, etc. may also be multilayered, for example, the driving layer DRL may include two different semiconductor layers SCL, or two or three source-drain metal layers SD, or two or three gate layers GT; accordingly, the insulating film layers in the driving layer DRL (such as the gate insulating layer GI, the interlayer dielectric layer ILD, the planarization layer PLN, etc.) may be adaptively increased or decreased, or new insulating film layers may be added as needed.

[0064] Optionally, the driving layer DRL may further include a passivation layer, and the passivation layer may be disposed on a surface of the source-drain metal layer SD away from the SBT, so as to protect the source-drain metal layer SD.

[0065] As an example, see Figure 3 The driving layer DRL may include an inorganic buffer layer BUF, a semiconductor layer SCL, a gate insulating layer GI, a gate layer GT, an interlayer dielectric layer ILD, a source / drain metal layer SD and a planarization layer PLN which are stacked in sequence, and the thin film transistor formed in this way is a top-gate thin film transistor.

[0066] Optional, see Figure 3, the pixel layer PXL may include a pixel electrode layer PEL, a pixel definition layer PDL, a light-emitting functional layer EFL and a common electrode layer COML which are stacked in sequence. Among them, the pixel electrode layer PEL has a plurality of pixel electrodes in the display area of ​​the display panel. The pixel definition layer PDL has a plurality of through pixel openings which are arranged one by one in correspondence with the plurality of pixel electrodes, and any one of the pixel openings exposes at least a portion of the corresponding pixel electrode. For example, the pixel definition layer PDL covers the edge of the pixel electrode and exposes at least a portion of the internal area of ​​the pixel electrode, so that the pixel definition layer PDL can effectively define the actual effective area of ​​the pixel electrode (the area directly connected to the light-emitting functional layer EFL), and further define the light-emitting area and light-emitting area of ​​the sub-pixel PX. The common electrode layer COML covers the light-emitting functional layer EFL as a common electrode. The pixel electrode and the common electrode layer COML provide carriers such as electrons and holes to the light-emitting functional layer EFL, so that the light-emitting functional layer EFL emits light. The portion of the light-emitting functional layer EFL located between the pixel electrode and the common electrode layer COML can serve as a light-emitting functional unit of the sub-pixel PX. The pixel electrode, the common electrode layer COML, and the light emitting functional unit form a light emitting element LD as a sub-pixel PX, wherein one of the pixel electrode and the common electrode layer COML serves as an anode of the sub-pixel PX, and the other serves as a cathode of the sub-pixel PX.

[0067] In this example, the display panel PNL is an OLED display panel. The light-emitting functional layer EFL may include an organic light-emitting layer, and may include one or more of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Further, the organic light-emitting layer may include a light-emitting layer host material and a light-emitting layer guest material, and the light-emitting layer guest material may be a fluorescent dopant or a phosphorescent dopant, and in particular, may be a thermally activated delayed fluorescent material.

[0068] In one example, see Figure 3, the display panel PNL may also be provided with a thin film encapsulation layer TFE. The thin film encapsulation layer TFE may be provided on the surface of the pixel layer PXL away from the SBT, and may include an inorganic encapsulation layer and an organic encapsulation layer alternately stacked. The inorganic encapsulation layer can effectively block external moisture and oxygen, and prevent water and oxygen from invading the pixel layer PXL and causing aging of the material in the pixel layer PXL. Optionally, the edge of the inorganic encapsulation layer may be located in the peripheral area. The organic encapsulation layer is located between two adjacent inorganic encapsulation layers to achieve flattening and reduce the stress between the inorganic encapsulation layers. Among them, the edge of the organic encapsulation layer may be located between the edge of the display area and the edge of the inorganic encapsulation layer. Exemplarily, the thin film encapsulation layer TFE includes a first inorganic encapsulation layer CVD1, an organic encapsulation layer IJP, and a second inorganic encapsulation layer CVD2 sequentially stacked on the side of the pixel layer PXL away from the SBT. Of course, in other embodiments of the present disclosure, the display panel may not be provided with a thin film encapsulation layer, but the pixel layer may be encapsulated and protected in other ways.

[0069] In some embodiments of the present disclosure, see Figure 3 The display panel PNL may further include a touch function layer TSL. The touch function layer TSL may be disposed on a side of the thin film encapsulation layer TFE away from the pixel layer PXL, so that the display panel PNL has a touch function.

[0070] Figure 4 FIG. 1 is an example diagram of an equivalent circuit of an OLED display panel in the related art. Figure 4 The display panel includes an array of OLEDs (eg Figure 4 The invention relates to an OLED display device comprising a plurality of pixel drive circuits (OLED1, OLED2, OLED3, etc.) and a pixel drive circuit corresponding to each OLED; the OLED emits light under the drive of the pixel drive circuit. When the light-emitting functional layers EFL of adjacent OLEDs overlap each other, the output ends of the two pixel drive circuits are electrically connected through the light-emitting functional layers EFL of the OLEDs to form a leakage path. When an OLED displays a low grayscale value image and the adjacent OLED does not emit light, the drive current generated by the pixel drive circuit of the OLED will be shunted to the adjacent OLED, thereby causing the OLED to emit light at too low a brightness.

[0071] Figure 5 FIG. 1 is a graph showing the test results of the luminous performance of red sub-pixels under different luminous environments in the related art. Figure 5 When the other sub-pixels around the red sub-pixel are emitting light, the red sub-pixel is displayed normally; when the sub-pixels around the red sub-pixel are not emitting light, the red sub-pixel faces the problem of crosstalk, and the problem of missing low grayscale values ​​appears at low brightness.

[0072] In the related art, various explorations to solve this problem have faced considerable challenges. One way to improve it is to increase the spacing between adjacent sub-pixel openings, but this will result in a large loss of aperture ratio. Another way to improve it is to change the shape of the pixel definition layer to increase the resistance of the lateral leakage path, but the improvement effect is limited.

[0073] To this end, the present disclosure provides a driving method for the display device to improve the problem of insufficient light emitting brightness faced by at least some sub-pixels. Figure 6 , the driving method of the display device provided in the present disclosure includes:

[0074] Step S110, determining a monochrome pixel according to the picture data; among the sub-pixels of the monochrome pixel, only a sub-pixel of one color emits light;

[0075] Step S120, determining a black state voltage compensation value of a correction sub-pixel according to a black state voltage compensation table; the correction sub-pixel is located in the monochrome pixel and does not emit light;

[0076] Step S130 , driving the correction sub-pixel according to the black state voltage compensation value of the correction sub-pixel.

[0077] In the embodiment of the present disclosure, a monochrome pixel can be detected first; because only one color of the sub-pixel of the monochrome pixel emits light while other sub-pixels do not, there is a high risk of crosstalk at low brightness and low grayscale values, and the luminous sub-pixel of the monochrome pixel is prone to not emitting light or emitting light but with insufficient brightness. In step S110, these high-risk monochrome pixels can be identified by pattern detection of the screen data. In step S120, targeted compensation can be performed for high-risk monochrome pixels. Specifically, the black state voltage value of the non-luminous correction sub-pixel in the monochrome pixel is compensated, and then the black state voltage of the driving correction sub-pixel is compensated in step S130. On the one hand, the driving method of the present disclosure does not synchronously adjust the black state voltage value of each sub-pixel, thereby avoiding the problem that some sub-pixels with a grayscale value of 0 eventually emit light due to improper adjustment of the black state voltage value. On the other hand, the driving method disclosed in the present invention performs targeted compensation for the black state voltage of the correction sub-pixel according to the grayscale value of the light-emitting sub-pixel in the monochrome pixel, which can improve the accuracy of the black state voltage compensation of the correction sub-pixel, and thereby ensure the light-emitting accuracy of the light-emitting sub-pixel as much as possible while ensuring that the correction sub-pixel does not emit light.

[0078] In step S110 , the picture data includes the grayscale value of each sub-pixel PX, and whether the pixel is a monochrome pixel can be determined according to the grayscale value of each sub-pixel PX of the pixel.

[0079] Optionally, the driving module CTR may receive initial screen data provided by an external system (e.g., a host, a motherboard, or a graphics card), for example, by receiving the initial screen data through an HDMI interface, a DP interface, a DVI interface, a VGA interface, etc. In some examples, the initial screen data may be the same as the screen data; for example, the initial screen data is directly used as the screen data without any processing. In other examples, the initial screen data is different from the screen data, and the initial screen data is processed to generate the screen data.

[0080] In an example, if the arrangement of the grayscale values ​​of the sub-pixels of the initial picture data is different from the arrangement of the sub-pixels on the display panel PNL, the picture data may be generated according to the initial picture data in accordance with a preset algorithm.

[0081] In an example, the driving module CTR may have a compensation unit, which may compensate the grayscale values ​​of the sub-pixels according to the initial picture data, for example, increase or decrease the grayscale values ​​of some sub-pixels.

[0082] In one embodiment of the present disclosure, see Fig. 9 The driving module CTR has a detection unit, which is used to determine the monochrome pixel according to the picture data.

[0083] In one example, the detection unit can read the screen data row by row, for example, obtain the grayscale value of a row of sub-pixels; then, determine one by one whether each pixel in the row of graphic sub-pixels is a monochrome pixel. Of course, in other embodiments of the present disclosure, the detection unit can also use other methods to determine monochrome pixels. For example, the detection unit can read the grayscale values ​​of multiple rows of sub-pixels at the same time. For another example, the detection unit can determine whether multiple pixels are monochrome pixels at the same time. For another example, the detection unit can determine monochrome pixels in the process of reading screen data, without having to wait for the grayscale values ​​of one or more rows of sub-pixels to be read before determining whether the pixel is a monochrome pixel.

[0084] In one example, the driving module CTR includes a microprocessor MCU and a source driving circuit SIC; the microprocessor MCU can load picture data to the source driving circuit SIC; the source driving circuit SIC has a detection unit, which can perform graphic detection on the picture data read from the microprocessor MCU to obtain monochrome pixels; then, the source driving circuit SIC can drive each sub-pixel PX according to the picture data, for example, determine the driving voltage value of each sub-pixel PX according to the grayscale value of each sub-pixel PX, and convert the determined driving voltage value into an analog driving voltage and then load it to the data line DL electrically connected to the sub-pixel PX. Wherein, after the source driving circuit SIC determines the monochrome pixel in the picture data, the analog driving voltage of the modified sub-pixel in the monochrome pixel can be generated according to the method shown in step S120 and step S130 provided in the embodiment of the present disclosure.

[0085] In the embodiment of the present disclosure, the driving voltage value is a digital value, which expresses the mathematical value of the driving voltage. The analog driving voltage is an analog voltage with a specific electromotive force. The driving module CTR of the embodiment of the present disclosure, especially the source driving circuit SIC on the driving module CTR, can perform digital-to-analog conversion according to the driving voltage value, and then generate an analog driving voltage. In the embodiment of the present disclosure, when the sub-pixel PX does not emit light, the grayscale value of the sub-pixel PX is 0. Generally, in order to ensure that the sub-pixel PX with a grayscale value of 0 does not emit light to improve the contrast of the display panel PNL, the actual driving voltage used by the sub-pixel PX with a grayscale value of 0 and the actual driving voltage used by the sub-pixel PX with a grayscale value of 1 have an increased differential pressure; in the embodiment of the present disclosure, the analog driving voltage loaded when the grayscale value of the sub-pixel PX is 0 is called an analog black state voltage, and the driving voltage value corresponding to the grayscale value of the corresponding sub-pixel PX is 0 is called a black state voltage value. It can be understood that the analog black state voltage is a kind of analog driving voltage, and the black state voltage value is a kind of driving voltage value.

[0086] In the embodiment of the present disclosure, the driving module CTR determines whether the sub-pixel emits light according to the grayscale value of the sub-pixel. For example, when the grayscale value of the sub-pixel is 0, the sub-pixel is determined not to emit light. When the grayscale value of the sub-pixel is not 0, the sub-pixel is determined to emit light.

[0087] In the embodiment of the present disclosure, whether the pixel is a monochrome pixel can be determined based on the grayscale values ​​of each sub-pixel PX of the pixel. If there are sub-pixels PX with grayscale values ​​not equal to 0 in the pixel, and all sub-pixels PX with grayscale values ​​not equal to 0 are sub-pixels PX of the same color, then the pixel is a monochrome pixel. That is, there is only one sub-pixel PX of one color in the monochrome pixel that emits light.

[0088] Taking a pixel including three sub-pixels PX, namely, a first sub-pixel PR, a second sub-pixel PG, and a third sub-pixel PB arranged in sequence as an example, a monochrome pixel is exemplarily described. If the grayscale value of the first sub-pixel PR is not 0, and the grayscale values ​​of the second sub-pixel PG and the third sub-pixel PB are both 0, then the pixel is a monochrome pixel. If the grayscale value of the second sub-pixel PG is not 0, and the grayscale values ​​of the first sub-pixel PR and the third sub-pixel PB are both 0, then the pixel is a monochrome pixel. If the grayscale value of the third sub-pixel PB is not 0, and the grayscale values ​​of the first sub-pixel PR and the second sub-pixel PG are both 0, then the pixel is a monochrome pixel.

[0089] Taking a pixel including four sub-pixels PX, namely, a first sub-pixel PR, a second sub-pixel PG, a third sub-pixel PB, and a second sub-pixel PG arranged in sequence as an example, a monochrome pixel is exemplarily described. If the grayscale value of the first sub-pixel PR is not 0, and the grayscale values ​​of the second sub-pixel PG and the third sub-pixel PB are both 0, then the pixel is a monochrome pixel. If the grayscale value of the third sub-pixel PB is not 0, and the grayscale values ​​of the first sub-pixel PR and the second sub-pixel PG are both 0, then the pixel is a monochrome pixel. If the grayscale value of a second sub-pixel PG is not 0, and the grayscale values ​​of the first sub-pixel PR, the third sub-pixel PB, and another second sub-pixel PG are all 0, then the pixel is a monochrome pixel. If the grayscale values ​​of both second sub-pixels PG are not 0, and the grayscale values ​​of the first sub-pixel PR and the third sub-pixel PB are both 0, then the pixel is a monochrome pixel.

[0090] In step S120, the black state voltage compensation value of the correction sub-pixel of the monochrome pixel can be determined according to the black state voltage compensation table and the grayscale value of the light-emitting sub-pixel in the monochrome pixel. For example, the driving module CTR can determine the black state voltage compensation value of the correction sub-pixel of the monochrome pixel according to the black state voltage compensation table and the grayscale value of the light-emitting sub-pixel in the monochrome pixel.

[0091] In one example, see Fig. 9 The driving module CTR has a compensation unit, which is used to determine the black state voltage compensation value of the correction sub-pixel according to the black state voltage compensation table.

[0092] In one embodiment of the present disclosure, in the monochrome pixel, at least part of the correction sub-pixels are adjacent to the light-emitting sub-pixels. Since the non-light-emitting sub-pixels in the adjacent sub-pixels easily lead to insufficient light-emitting brightness of the light-emitting sub-pixels or even no light-emitting, the non-light-emitting sub-pixels adjacent to the light-emitting sub-pixels can be used as correction sub-pixels, and the black state voltage of the correction sub-pixels can be compensated, so as to increase the leakage current of the pixel driving circuit PDC corresponding to the correction sub-pixels when they are turned off, thereby reducing the shunting effect on the pixel driving circuit PDC of the light-emitting sub-pixels, and improving the accuracy of the light-emitting brightness of the light-emitting sub-pixels.

[0093] In one example, in a monochrome pixel, the correction sub-pixel refers to the sub-pixel PX adjacent to the light-emitting sub-pixel; the non-light-emitting sub-pixel not adjacent to the light-emitting sub-pixel may not be used as the correction sub-pixel. This can improve the accuracy of black state voltage compensation.

[0094] For example, see Figure 7 , the monochrome pixel includes a first sub-pixel PR, a second sub-pixel PG1, a third sub-pixel PB, and a second sub-pixel PG2 arranged in sequence. If the first sub-pixel PR is a light-emitting sub-pixel, the second sub-pixel PG1 is a correction sub-pixel. If the second sub-pixel PG1 is a light-emitting sub-pixel, the first sub-pixel PR and the third sub-pixel PB are correction sub-pixels. If the third sub-pixel PB is a light-emitting sub-pixel, the second sub-pixel PG1 and the second sub-pixel PG2 are correction sub-pixels. If the second sub-pixel PG2 is a light-emitting sub-pixel, the third sub-pixel PB is a correction sub-pixel.

[0095] In another example, in a monochrome pixel, when a non-luminous sub-pixel is adjacent to a luminous sub-pixel, all sub-pixels PX of the same color as the non-luminous sub-pixel in the monochrome pixel are correction sub-pixels. In this way, the size of the black state voltage compensation table can be reduced, the driving method can be simplified, the cost of the register storing the black state voltage compensation table can be reduced, and the power consumption of the driving module CTR can be reduced.

[0096] For example, see Figure 7 , the monochrome pixel includes a first sub-pixel PR, a second sub-pixel PG1, a third sub-pixel PB, and a second sub-pixel PG2 arranged in sequence. If the first sub-pixel PR is a light-emitting sub-pixel, the second sub-pixel PG1 and the second sub-pixel PG2 are both correction sub-pixels. If the second sub-pixel PG1 is a light-emitting sub-pixel, the first sub-pixel PR and the third sub-pixel PB are correction sub-pixels. If the third sub-pixel PB is a light-emitting sub-pixel, the second sub-pixel PG1 and the second sub-pixel PG2 are both correction sub-pixels. If the second sub-pixel PG2 is a light-emitting sub-pixel, the third sub-pixel PB is a correction sub-pixel.

[0097] In one embodiment of the present disclosure, the pixel includes a plurality of second sub-pixels PG, and a first sub-pixel PR and a third sub-pixel PB adjacent to at least one second sub-pixel PG; when at least one second sub-pixel PG in a monochrome pixel emits light, at least one of the first sub-pixel PR and the third sub-pixel PB serves as the correction sub-pixel. Furthermore, the first sub-pixel PR or the third sub-pixel PB adjacent to the second sub-pixel PG that emits light serves as the correction sub-pixel, and the first sub-pixel PR or the third sub-pixel PB that is not adjacent to the second sub-pixel PG that emits light may serve as the correction sub-pixel or may not serve as the correction sub-pixel.

[0098] In one example, see Figure 7 The monochrome pixel includes a first sub-pixel PR, a second sub-pixel PG1, a third sub-pixel PB, and a second sub-pixel PG2 arranged in sequence. If the second sub-pixel PG2 is a light-emitting sub-pixel, the third sub-pixel PB is a correction sub-pixel.

[0099] In another example, see Figure 7 The monochrome pixel includes a first sub-pixel PR, a second sub-pixel PG1, a third sub-pixel PB, and a second sub-pixel PG2 arranged in sequence. If the second sub-pixel PG2 is a light-emitting sub-pixel, the first sub-pixel PR and the third sub-pixel PB are both correction sub-pixels.

[0100] In one embodiment of the present disclosure, see Figure 7 and Figure 8 , the pixel includes a first sub-pixel PR and a third sub-pixel PB, and includes a second sub-pixel PG located between the first sub-pixel PR and the third sub-pixel PB; in a monochrome pixel in which the first sub-pixel PR serves as a light-emitting sub-pixel, the third sub-pixel PB does not serve as a correction sub-pixel of the monochrome pixel; in a monochrome pixel in which the third sub-pixel PB serves as a light-emitting sub-pixel, the first sub-pixel PR does not serve as a correction sub-pixel of the monochrome pixel. In this way, the size of the black state voltage compensation table can be reduced, the driving method can be simplified, the cost of the register storing the black state voltage compensation table can be reduced, and the power consumption of the driving module CTR can be reduced.

[0101] In another embodiment of the present disclosure, the pixel includes at least three sub-pixels of different colors; the sub-pixels of different colors from the luminous sub-pixel in the monochrome pixel are all the correction sub-pixels. In this way, the compensation accuracy of the monochrome pixel can be further improved, and the luminous accuracy of the monochrome pixel can be improved.

[0102] For example, see Figure 7 , the monochrome pixel includes a first sub-pixel PR, a second sub-pixel PG1, a third sub-pixel PB, and a second sub-pixel PG2 arranged in sequence. If the first sub-pixel PR is a light-emitting sub-pixel, the second sub-pixel PG1, the second sub-pixel PG2, and the third sub-pixel PB are all correction sub-pixels. If the second sub-pixel PG1 is a light-emitting sub-pixel, the first sub-pixel PR and the third sub-pixel PB are all correction sub-pixels. If the third sub-pixel PB is a light-emitting sub-pixel, the second sub-pixel PG1, the second sub-pixel PG2, and the first sub-pixel PR are all correction sub-pixels. If the second sub-pixel PG2 is a light-emitting sub-pixel, the first sub-pixel PR, the second sub-pixel PG1, and the second sub-pixel PG2 are all correction sub-pixels.

[0103] In one embodiment of the present disclosure, the black state voltage compensation table includes multiple sub-compensation tables corresponding to the colors of the light-emitting sub-pixels respectively; any sub-compensation table includes multiple compensation parameter groups of the light-emitting sub-pixels of the corresponding colors, and any one of the compensation parameter groups includes the grayscale value of the light-emitting sub-pixel in the monochrome pixel and the black state voltage compensation value of the correction sub-pixel in the monochrome pixel.

[0104] Optionally, the driving module CTR is provided with a compensation parameter group register for storing a black state voltage compensation table. The compensation unit can determine the black state voltage compensation value of the correction sub-pixel by reading the compensation parameter group in the compensation parameter group register.

[0105] In one example, the grayscale value of the luminous sub-pixel in the compensation parameter group can be a grayscale value recorded in the compensation parameter group register, or it can be a specific value recorded in the compensation parameter group register and corresponding to the grayscale value, such as a number, code, etc.

[0106] In another example, the grayscale value of the luminous sub-pixel in the compensation parameter group is not recorded in the compensation parameter group register, but the grayscale value is associated with a specific address, especially with the black state voltage compensation value of the correction sub-pixel. For example, the compensation unit has an index table, which records the grayscale value of the luminous sub-pixel and the address of the black state voltage compensation value of the correction sub-pixel corresponding to the grayscale value of the luminous sub-pixel. When a compensation parameter group needs to be called, the address corresponding to the grayscale value of the luminous sub-pixel can be found in the index table, and then the data is read according to the found address. Optionally, the index table can be presented as a form executed by a program, or as a circuit implemented by hardware mapping.

[0107] In one example, the black state voltage compensation value of the correction sub-pixel is the final black state voltage value of the correction sub-pixel, and the driving module CTR converts the black state voltage compensation value into the corresponding analog black state voltage (i.e., analog driving voltage). Of course, in other embodiments of the present disclosure, the black state voltage compensation value of the correction sub-pixel may also be the difference between the final black state voltage value and the preset black state voltage value (the black state voltage value of the non-corrected sub-pixel of the same color); the compensation unit may determine the final black state voltage value based on the black state voltage compensation value of the correction sub-pixel and the preset black state voltage value.

[0108] In one embodiment of the present disclosure, a pixel includes a first sub-pixel PR, a second sub-pixel PG, a third sub-pixel PB, and a second sub-pixel PG arranged in sequence, or a pixel includes a first sub-pixel PR, a second sub-pixel PG, and a third sub-pixel PB arranged in sequence. Then the black state voltage compensation table includes a first sub-compensation table corresponding to the first sub-pixel PR, a second sub-compensation table corresponding to the second sub-pixel PG, and a third sub-compensation table corresponding to the third sub-pixel PB.

[0109] The first sub-compensation table is applicable to the case where the first sub-pixel PR in a monochrome pixel is a light-emitting sub-pixel, and the first sub-compensation table includes a plurality of first compensation parameter groups, each of which includes a grayscale value of the first sub-pixel PR and a black-state voltage compensation value of the correction sub-pixel. The black-state voltage compensation value of the correction sub-pixel in the monochrome pixel can be determined according to the grayscale value of the first sub-pixel PR.

[0110] In an example, the second sub-pixel PG is a correction sub-pixel, and the compensation unit may determine the black-state voltage compensation value of the second sub-pixel PG according to the grayscale value of the first sub-pixel PR and the first sub-compensation table.

[0111] In another example, the second subpixel PG and the third subpixel PB are both correction subpixels, then the compensation unit can determine the black state voltage compensation value of the second subpixel PG and the black state voltage compensation value of the third subpixel PB according to the grayscale value of the first subpixel PR and the first sub-compensation table.

[0112] The second sub-compensation table is applicable to the case where the second sub-pixel PG in the monochrome pixel is a light-emitting sub-pixel, and the second sub-compensation table includes a plurality of second compensation parameter groups, each of which includes a grayscale value of the second sub-pixel PG and a black-state voltage compensation value of the correction sub-pixel. The black-state voltage compensation value of the correction sub-pixel in the monochrome pixel can be determined according to the grayscale value of the second sub-pixel PG.

[0113] In one example, the first subpixel PR and the third subpixel PB are both correction subpixels, then the compensation unit can determine the black state voltage compensation value of the first subpixel PR and the black state voltage compensation value of the third subpixel PB according to the grayscale value of the second subpixel PG and the second sub-compensation table.

[0114] The third sub-compensation table is applicable to the case where the third sub-pixel PB in the monochrome pixel is a light-emitting sub-pixel. The third sub-compensation table includes a plurality of third compensation parameter groups, each of which includes a grayscale value of the third sub-pixel PB and a black-state voltage compensation value of the correction sub-pixel. The black-state voltage compensation value of the correction sub-pixel can be determined according to the grayscale value of the third sub-pixel PB.

[0115] In an example, the second sub-pixel PG is a correction sub-pixel, and the black-state voltage compensation value of the second sub-pixel PG can be determined according to the grayscale value of the third sub-pixel PB and the third sub-compensation table.

[0116] In another example, the second subpixel PG and the first subpixel PR are both correction subpixels, then the black state voltage compensation value of the second subpixel PG and the black state voltage compensation value of the first subpixel PR can be determined according to the grayscale value of the third subpixel PB and the third sub-compensation table.

[0117] In one embodiment of the present disclosure, any sub-compensation table includes the black state voltage compensation value of the correction sub-pixel corresponding to each grayscale value of the light-emitting sub-pixel. The compensation unit is configured to directly read the black state voltage compensation value of the correction sub-pixel from the corresponding sub-compensation table according to the grayscale value of the light-emitting sub-pixel of the monochrome pixel.

[0118] Table 1 is a first example of the first sub-compensation table. In this first example, the second sub-pixel PG and the third sub-pixel PB are both correction sub-pixels. In this example, the grayscale value range of the sub-pixel is 0 to 255. Referring to Table 1, the first sub-compensation table includes the grayscale value G of the first sub-pixel PR. R(i) The corresponding black state voltage compensation value V G(0_i) and the black state voltage compensation value V B(0_i) ; Wherein, i is the grayscale value of the first sub-pixel PR, which is any positive integer from 1 to 255. It can be understood that in this example, the grayscale value of the sub-pixel PX is an 8-bit grayscale value. In other examples, the grayscale value range of the sub-pixel PX can also be other ranges other than 0 to 255, such as 0 to 128, or 0 to 512, or 0 to 1024. In Table 1, the grayscale value G R(i) , Black state voltage compensation value V G(0_i) , Black state voltage compensation value V B(0_i) Together they form a first compensation parameter group of the first sub-compensation table. For example, the grayscale value G of the first sub-pixel PR R(1) is 1, the black state voltage compensation value of the second sub-pixel PG is V G(0_1) , the black state voltage compensation value of the third sub-pixel PB is V B(0_1) ; Grayscale value G of the first sub-pixel PR R(2) is 2, the black state voltage compensation value of the second sub-pixel PG is V G(0_2) , the black state voltage compensation value of the third sub-pixel PB is V B(0_2) ; Grayscale value G of the first sub-pixel PR R(3) is 3, the black state voltage compensation value of the second sub-pixel PG is V G(0_3) , the black state voltage compensation value of the third sub-pixel PB is V B(0_3) ; Grayscale value G of the first sub-pixel PR R(4) is 4, the black state voltage compensation value of the second sub-pixel PG is V G(0_4) , the black state voltage compensation value of the third sub-pixel PB is V B(0_4) Similarly, the grayscale value G of the first sub-pixel PR R(254 ) is 254, and the black state voltage compensation value of the second sub-pixel PG is V G(0_254) , the black state voltage compensation value V of the third sub-pixel PB B(0_254) ; Grayscale value G of the first sub-pixel PRR(255) is 255, and the black state voltage compensation value of the second sub-pixel PG is V G(0_255) , the black state voltage compensation value of the third sub-pixel PB is V B(0_255) .

[0119] Table 1: First example of the first sub-compensation table

[0120]

[0121] In the first example, the driving voltage value V of the first sub-pixel PR when the grayscale value is i R(i) can be stored in other registers instead of the compensation parameter group registers. For example, see Fig. 9 The driving module CTR also has a voltage determination unit, which is used to determine the driving voltage value of the sub-pixel PX according to the grayscale value of the sub-pixel PX. When a sub-pixel PX emits light, or when a sub-pixel PX does not emit light and is not a correction sub-pixel, the voltage determination unit determines the driving voltage value of the sub-pixel PX according to the grayscale value of the sub-pixel PX; when a sub-pixel PX is a correction sub-pixel, the compensation unit determines the black state voltage compensation value of the correction sub-pixel according to the grayscale value of the luminous sub-pixel in the monochrome pixel where the correction sub-pixel is located. In this way, the capacity of the compensation parameter group register in the compensation unit can be reduced, thereby helping to reduce the cost of the driving module CTR.

[0122] Table 2 is a second example of the first sub-compensation table. Compared with the first sub-compensation table of the first example, the first sub-compensation table of the second example also includes the driving voltage values ​​of the first sub-pixel PR at different grayscale values, that is, the driving voltage value V of the first sub-pixel PR when the grayscale value is i. R(i) . In this second example, the compensation unit can obtain the driving voltage value of the first sub-pixel PR as the light-emitting sub-pixel in the monochrome pixel by searching the first sub-compensation table. In this way, when the detection unit determines that the first sub-pixel PR is a monochrome pixel that emits light, the compensation unit can determine the driving voltage values ​​of the light-emitting sub-pixel and the correction sub-pixel of the monochrome pixel (i.e., the driving voltage value of the first sub-pixel PR, the black state voltage compensation value of the second sub-pixel PG, and the black state voltage compensation value of the third sub-pixel PB) according to the first sub-compensation table. When the structure of the pixel is as follows Figure 7 or Figure 8 As shown, that is, when the pixel only includes three sub-pixels PX of different colors, namely, the first sub-pixel PR, the second sub-pixel PG and the third sub-pixel PB, the compensation unit can determine the driving voltage values ​​of each sub-pixel PX in the monochrome pixel where the first sub-pixel PR emits light according to the first sub-compensation table of the second example.

[0123] Table 2: Second example of the first sub-compensation table

[0124]

[0125]

[0126] In the first example and the second example of the first sub-compensation table, the correction sub-pixel of the monochrome pixel that the first sub-pixel PR emits light is the second sub-pixel PG and the third sub-pixel PB. The first sub-compensation table may also include other examples, such as making the correction sub-pixel of the monochrome pixel that the first sub-pixel PR emits light only include the second sub-pixel PG.

[0127] Table 3 is a third example of the first sub-compensation table. Referring to Table 3, the third example of the first sub-compensation table is similar to the first example of the first sub-compensation table, but does not include the black-state voltage compensation value of the third sub-pixel PB. After the detection unit determines that the first sub-pixel PR emits a monochrome pixel, the compensation unit determines the black-state voltage compensation value of the second sub-pixel PG according to the grayscale value of the first sub-pixel PR, the voltage determination unit determines the driving voltage value of the first sub-pixel PR according to the grayscale value of the first sub-pixel PR, and the voltage determination unit determines the black-state voltage value V of the third sub-pixel PB according to the grayscale value (0) of the third sub-pixel PB. B0 Thus, compared with the first example of the first sub-compensation table, the third first sub-compensation table requires smaller registers.

[0128] Table 3: Third example of the first sub-compensation table

[0129]

[0130] Table 4 is a fourth example of the first sub-compensation table. Referring to Table 4, the fourth example of the first sub-compensation table is similar to the second example of the first sub-compensation table, but does not include the black state voltage compensation value of the third sub-pixel PB. After the detection unit determines that the first sub-pixel PR emits a monochrome pixel, the compensation unit determines the black state voltage compensation value of the second sub-pixel PG and the driving voltage value of the first sub-pixel PR according to the grayscale value of the first sub-pixel PR, and the voltage determination unit determines the black state voltage value V of the third sub-pixel PB according to the grayscale value (0) of the third sub-pixel PB. B0 Thus, compared with the second example of the first sub-compensation table, the fourth first sub-compensation table requires smaller registers.

[0131] Table 4: Fourth example of the first sub-compensation table

[0132]

[0133] In the first to fourth examples of the first sub-compensation table, the first sub-compensation table includes the black-state voltage compensation value of the correction sub-pixel corresponding to any non-zero grayscale value of the first sub-pixel PR (i.e., i is any integer from 1 to 255). After the grayscale value of the first sub-pixel PR is determined, the black-state voltage compensation value of the correction sub-pixel can be directly obtained by searching the first sub-compensation table.

[0134] The compensation unit of the present disclosure may also be configured in other ways, so that the first sub-compensation table only includes part of the grayscale values ​​of the first sub-pixel PR and their respective corresponding black-state voltage compensation values ​​of the correction sub-pixels. For example, the first sub-compensation table only includes 8 to 30 different first compensation parameter groups, and the grayscale values ​​of the first sub-pixel PR as the light-emitting sub-pixel in any two first compensation parameter groups are different. In this way, the black-state voltage compensation value of the correction sub-pixel corresponding to the grayscale value of at least a part of the first sub-pixel PR cannot be directly determined by searching the first sub-compensation table. In the embodiment of the present disclosure, these first compensation parameter groups of the first sub-compensation table may be referred to as the first binding point compensation parameter group; in the first binding point compensation parameter group, the grayscale value of the first sub-pixel PR is referred to as the binding point grayscale value of the first sub-pixel PR, and the black-state voltage compensation value of the correction sub-pixel is referred to as the binding point compensation value of the correction sub-pixel.

[0135] Optionally, the compensation unit is configured to determine the black state voltage compensation value of the correction sub-pixel according to the grayscale value of the first sub-pixel PR by the following method: first, obtain at least two first binding point compensation parameter groups according to the grayscale value of the first sub-pixel PR, and the grayscale value of the first sub-pixel PR is located within the binding point grayscale value range of the first sub-pixel PR of the two first binding point compensation parameter groups; then, according to the grayscale value of the first sub-pixel PR, the binding point grayscale value of the first sub-pixel PR of the two first binding point compensation parameter groups, and the binding point compensation value of the correction sub-pixel of the two first binding point compensation parameter groups, a linear difference algorithm is used to determine the black state voltage compensation value of the correction sub-pixel, or other algorithms are used to determine the black state voltage compensation value of the correction sub-pixel.

[0136] As described above, the first sub-compensation table used for the monochrome pixel of the first sub-pixel PR is introduced in an exemplary manner. In these exemplary introductions, the correction sub-pixel in the first sub-compensation table may be only the second sub-pixel PG, or the third sub-pixel PB and the second sub-pixel PG; the first sub-compensation table may be used to determine the driving voltage value of the first sub-pixel PR according to the grayscale value of the first sub-pixel PR, or may not include the driving voltage value of the first sub-pixel PR; the first sub-compensation table may include the first compensation parameter group corresponding to each luminous grayscale value of the first sub-pixel PR, or may only include the first compensation parameter group corresponding to some grayscale values ​​(i.e., the first binding point compensation parameter group).

[0137] As follows, the second sub-compensation table corresponding to the monochrome pixel of the second sub-pixel PG is exemplarily described. In these examples, when the second sub-pixel PG emits light, the first sub-pixel PR and the third sub-pixel PB are both used as correction sub-pixels. The second sub-compensation table can be used to determine the driving voltage value of the second sub-pixel PG according to the grayscale value of the second sub-pixel PG, or it may not include the driving voltage value of the second sub-pixel PG; the second sub-compensation table may include a second compensation parameter group corresponding to each luminous grayscale value of the second sub-pixel PG, or it may only include a second compensation parameter group corresponding to some grayscale values ​​(referred to as a second binding point compensation parameter group in this disclosure).

[0138] Table 5 is a first example of the second sub-compensation table. In this example, the first sub-pixel PR and the third sub-pixel PB are both correction sub-pixels. In this example, the grayscale value range of the sub-pixel is 0 to 255. Referring to Table 5, the second sub-compensation table includes the grayscale value G of the second sub-pixel PG. G(i) The corresponding black state voltage compensation value V R(0_i) and the black state voltage compensation value V B(0_i) ; Wherein, i is the grayscale value of the second sub-pixel PG, which is any positive integer from 1 to 255. It can be understood that, in this example, the grayscale value of the sub-pixel PX is an 8-bit grayscale value. In other examples, the grayscale value range of the sub-pixel PX can also be other ranges other than 0 to 255, such as 0 to 128, or 0 to 512, or 0 to 1024, etc.

[0139] In Table 5, the grayscale value G G(i) , Black state voltage compensation value V R(0_i) , Black state voltage compensation value V B(0_i) Together they form a second compensation parameter group of the second sub-compensation table. For example, the grayscale value G of the second sub-pixel PG G(1) is 1, the black state voltage compensation value of the first sub-pixel PR is V R(0_1) , the black state voltage compensation value of the third sub-pixel PB is V B(0_1) ; Grayscale value G of the second sub-pixel PG G(2) is 2, the black state voltage compensation value of the first sub-pixel PR is V R(0_2) , the black state voltage compensation value of the third sub-pixel PB is V B(0_2) ; Grayscale value G of the second sub-pixel PG G(3) is 3, the black state voltage compensation value of the first sub-pixel PR is V R(0_3) , the black state voltage compensation value of the third sub-pixel PB is V B ( 0_3) ; Grayscale value G of the second sub-pixel PG G(4) is 4, the black state voltage compensation value of the first sub-pixel PR is V R(0_4), the black state voltage compensation value of the third sub-pixel PB is V B(0_4) Similarly, the grayscale value G of the second sub-pixel PG G(254) is 254, and the black state voltage compensation value of the first sub-pixel PR is V R(0_254) , the black state voltage compensation value of the third sub-pixel PB is V B(0_254) ; Grayscale value G of the second sub-pixel PG G(255) is 255, and the black state voltage compensation value of the first sub-pixel PR is V R(0_255) , the black state voltage compensation value of the third sub-pixel PB is V B(0_255) .

[0140] Table 5: First example of the second sub-compensation table

[0141]

[0142] In the first example of the second sub-compensation table, the driving voltage value V of the second sub-pixel PG when the grayscale value is i G(i) It can be stored in other registers instead of the compensation parameter group register. For example, when the second sub-pixel PG is not a correction sub-pixel, the voltage determination unit of the driving module CTR can determine the driving voltage value of the second sub-pixel PG according to the grayscale value of the second sub-pixel PG. In this way, the capacity of the compensation parameter group register in the compensation unit can be reduced, thereby helping to reduce the cost of the driving module CTR.

[0143] Table 6 is a second example of the second sub-compensation table. Compared with the second sub-compensation table of the first example, the second sub-compensation table of the second example also includes the driving voltage values ​​of the second sub-pixel PG at different grayscale values, that is, the driving voltage value V of the second sub-pixel PG when the grayscale value is i. G(i) In the second example, the compensation unit can obtain the driving voltage value of the second sub-pixel PG by searching the second sub-compensation table. In this way, when the detection unit determines that the second sub-pixel PG emits light in a monochrome pixel, the compensation unit can determine the driving voltage values ​​of each sub-pixel PX of the monochrome pixel according to the second sub-compensation table (i.e., the driving voltage value of the second sub-pixel PG, the black state voltage compensation value of the first sub-pixel PR, and the black state voltage compensation value of the third sub-pixel PB).

[0144] Table 6: Second example of the second sub-compensation table

[0145]

[0146] In one example, when the grayscale values ​​of two second sub-pixels PG in the monochrome pixel where the second sub-pixel PG emits light are different, the reference grayscale value of the second sub-pixel PG can be determined according to the actual grayscale values ​​of the two second sub-pixels PG, and the black state voltage compensation value of the correction sub-pixel can be determined according to the reference grayscale value of the second sub-pixel PG and the second sub-compensation table. When determining the driving voltage value of the second sub-pixel PG, the driving voltage value of each second sub-pixel PG is determined according to the actual grayscale value of each second sub-pixel PG.

[0147] In one example, when the grayscale values ​​of two second sub-pixels PG in the monochrome pixel in which the second sub-pixel PG emits light are different, the maximum value of the actual grayscale values ​​of the two second sub-pixels PG is determined as the reference grayscale value of the second sub-pixel PG, or the average value of the actual grayscale values ​​of the two second sub-pixels PG is determined as the reference grayscale value of the second sub-pixel PG.

[0148] In the above two examples of the second sub-compensation table, the second sub-compensation table includes the black-state voltage compensation value of the correction sub-pixel corresponding to any non-zero grayscale value of the second sub-pixel PG (i.e., i is any integer from 1 to 255). After the grayscale value (or reference grayscale value) of the second sub-pixel PG is determined, the black-state voltage compensation value of the correction sub-pixel can be directly obtained by searching the second sub-compensation table.

[0149] The compensation unit of the present disclosure can also be configured in other ways, so that the second sub-compensation table only includes part of the grayscale values ​​of the second sub-pixel PG and their corresponding black-state voltage compensation values ​​of the correction sub-pixels. For example, the second sub-compensation table only includes 8 to 30 different second compensation parameter groups, and the grayscale values ​​of the second sub-pixels PG as light-emitting sub-pixels in any two second compensation parameter groups are different. In this way, the black-state voltage compensation values ​​of the correction sub-pixels corresponding to the grayscale values ​​of at least a part of the second sub-pixels PG cannot be directly determined by looking up the second sub-compensation table. In the embodiment of the present disclosure, these second compensation parameter groups of the second sub-compensation table can be referred to as second binding point compensation parameter groups; in the second binding point compensation parameter group, the grayscale value of the second sub-pixel PG is referred to as the binding point grayscale value of the second sub-pixel PG, and the black-state voltage compensation value of the correction sub-pixel is referred to as the binding point compensation value of the correction sub-pixel.

[0150] Optionally, the compensation unit is configured to determine the black state voltage compensation value of the correction sub-pixel according to the grayscale value of the second sub-pixel PG by the following method: first, obtain at least two second binding point compensation parameter groups according to the grayscale value of the second sub-pixel PG, and the grayscale value of the second sub-pixel PG is located within the binding point grayscale value range of the second sub-pixel PG of the two second binding point compensation parameter groups; then, according to the grayscale value of the second sub-pixel PG, the binding point grayscale value of the second sub-pixel PG of the two second binding point compensation parameter groups, and the binding point compensation value of the correction sub-pixel of the two second binding point compensation parameter groups, a linear difference algorithm is used to determine the black state voltage compensation value of the correction sub-pixel, or other algorithms are used to determine the black state voltage compensation value of the correction sub-pixel.

[0151] As follows, the third sub-compensation table corresponding to the monochrome pixel of the third sub-pixel PB is exemplarily described. Similar to the first sub-compensation table, the correction sub-pixel in the third sub-compensation table may be only the second sub-pixel PG, or the first sub-pixel PR and the second sub-pixel PG; the third sub-compensation table may be used to determine the driving voltage value of the third sub-pixel PB according to the grayscale value of the third sub-pixel PB, or may not include the driving voltage value of the third sub-pixel PB; the third sub-compensation table may include the third compensation parameter group corresponding to each grayscale value of the third sub-pixel PB, or may only include the third compensation parameter group corresponding to some grayscale values ​​(referred to as the third binding point compensation parameter group).

[0152] Table 7 is a first example of the third sub-compensation table. In the first example, the second sub-pixel PG and the first sub-pixel PR are both correction sub-pixels. In this example, the grayscale value range of the sub-pixel is 0 to 255. Referring to Table 7, the third sub-compensation table includes the grayscale value G of the third sub-pixel PB. B(i) The corresponding black state voltage compensation value V G(0_i) and the black state voltage compensation value V of the first sub-pixel PR R(0_i) ; Wherein, i is the grayscale value of the third sub-pixel PB, which is any positive integer from 1 to 255. It can be understood that, in this example, the grayscale value of the sub-pixel PX is an 8-bit grayscale value. In other examples, the grayscale value range of the sub-pixel PX can also be other ranges other than 0 to 255, such as 0 to 128, or 0 to 512, or 0 to 1024. In Table 7, the grayscale value G B(i) , Black state voltage compensation value V G(0_i) , Black state voltage compensation value V R(0_i) Together they form a third compensation parameter group of the third sub-compensation table. For example, the grayscale value G of the third sub-pixel PB B(1) is 1, the black state voltage compensation value of the second sub-pixel PG is V G(0_1) , the black state voltage compensation value of the first sub-pixel PR is V R(0_1); The grayscale value G of the third sub-pixel PB B(2) is 2, the black state voltage compensation value of the second sub-pixel PG is V G(0_2) , the black state voltage compensation value of the first sub-pixel PR is V R(0_2) ; The grayscale value G of the third sub-pixel PB B(3) is 3, the black state voltage compensation value of the second sub-pixel PG is V G(0_3) , the black state voltage compensation value of the first sub-pixel PR is V R(0_3) ; The grayscale value G of the third sub-pixel PB B(4) is 4, the black state voltage compensation value of the second sub-pixel PG is V G(0_4) , the black state voltage compensation value of the first sub-pixel PR is V R(0_4) Similarly, the grayscale value G of the third sub-pixel PB B(254) is 254, and the black state voltage compensation value of the second sub-pixel PG is V G(0_254) , the black state voltage compensation value of the first sub-pixel PR is V R(0_254) ; The grayscale value G of the third sub-pixel PB B(255) is 255, and the black state voltage compensation value of the second sub-pixel PG is V G(0_255) , the black state voltage compensation value of the first sub-pixel PR is V R(0_255) .

[0153] Table 7: First example of the third sub-compensation table

[0154]

[0155]

[0156] In the first example, the driving voltage value V of the third sub-pixel PB when the grayscale value is i B(i) It can be stored in other registers instead of the compensation parameter group register. For example, when the third sub-pixel PB is not a correction sub-pixel, the voltage determination unit of the driving module CTR can determine the driving voltage value of the third sub-pixel PB according to the grayscale value of the third sub-pixel PB. In this way, the capacity of the compensation parameter group register in the compensation unit can be reduced, thereby helping to reduce the cost of the driving module CTR.

[0157] Table 8 is a second example of the third sub-compensation table. Compared with the third sub-compensation table of the first example, the third sub-compensation table of the second example also includes the driving voltage values ​​of the third sub-pixel PB at different grayscale values, that is, the driving voltage value V of the third sub-pixel PB when the grayscale value is i. B(i)In the second example, the compensation unit can obtain the driving voltage value of the third sub-pixel PB by searching the third sub-compensation table. In this way, when the detection unit determines that the third sub-pixel PB is a monochrome pixel that emits light, the compensation unit can determine the driving voltage values ​​of each sub-pixel PX of the monochrome pixel (i.e., the driving voltage value of the third sub-pixel PB, the black state voltage compensation value of the second sub-pixel PG, and the black state voltage compensation value of the first sub-pixel PR) according to the third sub-compensation table.

[0158] Table 8: Second example of the third sub-compensation table

[0159]

[0160]

[0161] In the first and second examples of the third sub-compensation table, the correction sub-pixels of the monochrome pixel of the third sub-pixel PB are the second sub-pixel PG and the first sub-pixel PR. The third sub-compensation table may also include other examples, so that the correction sub-pixels of the monochrome pixel of the third sub-pixel PB only include the second sub-pixel PG.

[0162] Table 9 is a third example of the third sub-compensation table. Referring to Table 9, the third example of the third sub-compensation table is similar to the first example of the third sub-compensation table, but does not include the black-state voltage compensation value of the first sub-pixel PR. After the detection unit determines that the third sub-pixel PB is a monochrome pixel that emits light, the compensation unit determines the black-state voltage compensation value of the second sub-pixel PG according to the grayscale value of the third sub-pixel PB, the voltage determination unit determines the driving voltage value of the third sub-pixel PB according to the grayscale value of the third sub-pixel PB, and the voltage determination unit determines the black-state voltage value V of the first sub-pixel PR according to the grayscale value (0) of the first sub-pixel PR. R0 Thus, compared with the first example of the third sub-compensation table, the third third sub-compensation table requires smaller registers.

[0163] Table 9: Third example of the third sub-compensation table

[0164]

[0165]

[0166] Table 10 is a fourth example of the third sub-compensation table. Referring to Table 10, the fourth example of the third sub-compensation table is similar to the second example of the third sub-compensation table, but does not include the black state voltage compensation value of the first sub-pixel PR. After the detection unit determines that the third sub-pixel PB emits a single-color pixel, the compensation unit determines the black state voltage compensation value of the second sub-pixel PG and the driving voltage value of the third sub-pixel PB according to the grayscale value of the third sub-pixel PB, and the voltage determination unit determines the black state voltage value V of the first sub-pixel PR according to the grayscale value (0) of the first sub-pixel PR. R0 Thus, compared with the second example of the third sub-compensation table, the fourth third sub-compensation table requires smaller registers.

[0167] Table 10: Fourth example of the third sub-compensation table

[0168]

[0169] In the above four examples of the third sub-compensation table, the third sub-compensation table includes the black-state voltage compensation value of the correction sub-pixel corresponding to any non-zero grayscale value (i.e., i is any integer from 1 to 255) of the third sub-pixel PB. After the grayscale value (or reference grayscale value) of the third sub-pixel PB is determined, the black-state voltage compensation value of the correction sub-pixel can be directly obtained by searching the third sub-compensation table.

[0170] The compensation unit of the present disclosure can also be configured in other ways, so that the third sub-compensation table only includes part of the grayscale values ​​of the third sub-pixel PB and their corresponding black-state voltage compensation values ​​of the correction sub-pixels. For example, the third sub-compensation table only includes 8 to 30 different third compensation parameter groups, and the grayscale values ​​of the third sub-pixels PB as light-emitting sub-pixels in any two third compensation parameter groups are different. In this way, the black-state voltage compensation values ​​of the correction sub-pixels corresponding to the grayscale values ​​of at least a part of the third sub-pixels PB cannot be directly determined by looking up the third sub-compensation table. In the embodiment of the present disclosure, these third compensation parameter groups of the third sub-compensation table can be referred to as third binding point compensation parameter groups; in the third binding point compensation parameter group, the grayscale value of the third sub-pixel PB is referred to as the binding point grayscale value of the third sub-pixel PB, and the black-state voltage compensation value of the correction sub-pixel is referred to as the binding point compensation value of the correction sub-pixel.

[0171] Optionally, the compensation unit is configured to determine the black state voltage compensation value of the correction sub-pixel according to the grayscale value of the third sub-pixel PB using the following method: first, obtain at least two third binding point compensation parameter groups based on the grayscale value of the third sub-pixel PB, and the grayscale value of the third sub-pixel PB is within the binding point grayscale value range of the third sub-pixel PB in the two third binding point compensation parameter groups; then, based on the grayscale value of the third sub-pixel PB, the binding point grayscale values ​​of the third sub-pixel PB in the two third binding point compensation parameter groups, and the binding point compensation values ​​of the correction sub-pixel in the two third binding point compensation parameter groups, a linear difference algorithm is used to determine the black state voltage compensation value of the correction sub-pixel, or other algorithms are used to determine the black state voltage compensation value of the correction sub-pixel.

[0172] In one embodiment of the present disclosure, the compensation parameter group of the sub-compensation table includes a plurality of binding point compensation parameter groups, and the binding point compensation parameter groups include binding point grayscale values ​​of light-emitting sub-pixels and binding point black-state voltage compensation values ​​of correction sub-pixels. Determining the black-state voltage compensation value of the correction sub-pixel includes: when determining the black-state voltage compensation value of at least part of the correction sub-pixel, using a linear interpolation method to determine the black-state voltage compensation value of the correction sub-pixel according to the two binding point compensation parameter groups and the grayscale value of the light-emitting sub-pixel.

[0173] Optionally, each sub-compensation table of the black state voltage compensation table includes only a plurality of binding point compensation parameter groups, and the binding point compensation parameter groups include only the grayscale value of the luminous sub-pixel and the black state voltage compensation value of the correction sub-pixel. For example, the first sub-compensation table includes only a plurality of first binding point compensation parameter groups; the first binding point compensation parameter group includes the grayscale value of the first sub-pixel PR (i.e., the binding point grayscale value of the first sub-pixel PR), and the black state voltage compensation value of the second sub-pixel PG as the correction sub-pixel (i.e., the binding point compensation value of the second sub-pixel PG). For another example, the second sub-compensation table includes only a plurality of second binding point compensation parameter groups; the second binding point compensation parameter group includes the grayscale value of the second sub-pixel PG (i.e., the binding point grayscale value of the second sub-pixel PG), and the black state voltage compensation value of the first sub-pixel PR as the correction sub-pixel (i.e., the binding point compensation value of the first sub-pixel PR) and the black state voltage compensation value of the third sub-pixel PB as the correction sub-pixel (i.e., the binding point compensation value of the third sub-pixel PB). For another example, the third sub-compensation table only includes multiple third binding point compensation parameter groups; the third binding point compensation parameter group includes the grayscale value of the third sub-pixel PB (i.e., the binding point grayscale value of the third sub-pixel PB), and includes the black state voltage compensation value of the second sub-pixel PG serving as a correction sub-pixel (i.e., the binding point compensation value of the second sub-pixel PG).

[0174] See also Fig. 9The compensation unit includes a first compensation unit and a second compensation unit. The first compensation unit is used to determine the required binding point compensation parameter group according to the grayscale value of the luminous sub-pixel in the monochrome pixel, and the second compensation unit is used to determine the black state voltage compensation value of the correction sub-pixel according to the binding point compensation parameter group and the grayscale value of the luminous sub-pixel, for example, determining the black state voltage compensation value of the correction sub-pixel according to the linear interpolation method.

[0175] For example, when the monochrome pixel is a monochrome pixel that emits light from the first sub-pixel PR, the first compensation unit can obtain two first binding point compensation parameter groups based on the grayscale value of the first sub-pixel PR and the first sub-compensation table, and the grayscale value of the first sub-pixel PR is within the range of the binding point grayscale values ​​of the first sub-pixel PR in the two first binding point compensation parameter groups; the second compensation unit performs linear interpolation operation based on the grayscale value of the first sub-pixel PR and the two first binding point compensation parameter groups, and then obtains the black state voltage compensation value of the second sub-pixel PG corresponding to the grayscale value of the first sub-pixel PR.

[0176] For example, when the monochrome pixel is a monochrome pixel that emits light from the second sub-pixel PG, the first compensation unit can obtain two second binding point compensation parameter groups based on the grayscale value of the second sub-pixel PG and the second sub-compensation table, and the grayscale value of the second sub-pixel PG is within the range of the binding point grayscale values ​​of the second sub-pixel PG in the two second binding point compensation parameter groups; the second compensation unit performs linear interpolation operations based on the grayscale value of the second sub-pixel PG and the two second binding point compensation parameter groups, and then obtains the black state voltage compensation value of the third sub-pixel PB and the black state voltage compensation value of the first sub-pixel PR corresponding to the grayscale value of the second sub-pixel PG.

[0177] To give another example, when the monochrome pixel is a monochrome pixel that emits light from the third sub-pixel PB, the first compensation unit can obtain two third binding point compensation parameter groups based on the grayscale value of the third sub-pixel PB and the third sub-compensation table, and the grayscale value of the third sub-pixel PB is within the range of the binding point grayscale values ​​of the third sub-pixel PB in the two third binding point compensation parameter groups; the second compensation unit performs linear interpolation operation based on the grayscale value of the third sub-pixel PB and the two third binding point compensation parameter groups, and then obtains the black state voltage compensation value of the first sub-pixel PR corresponding to the grayscale value of the third sub-pixel PB.

[0178] In one embodiment of the present disclosure, see Fig. 9 , the voltage determination unit includes a first voltage determination unit and a second voltage determination unit.

[0179] The first voltage determination unit is used to determine at least two required binding point parameters according to the grayscale value of the non-corrected sub-pixel, and the binding point parameters include the binding point grayscale value and the binding point driving voltage value of the non-corrected sub-pixel. The second voltage determination unit is used to determine the driving voltage value of the non-corrected sub-pixel according to the grayscale value of the non-corrected sub-pixel and the binding point parameters of the non-corrected sub-pixel, for example, determining the driving voltage value of the non-corrected sub-pixel according to the linear interpolation method.

[0180] In one embodiment of the present disclosure, the driving module CTR can also generate an analog driving voltage of the correction sub-pixel according to the black state voltage compensation value of the correction sub-pixel determined by the compensation unit, and load it to the pixel driving circuit PDC of the correction sub-pixel, so as to drive the correction sub-pixel and achieve the purpose of improving the display effect of the luminous sub-pixel in the monochrome pixel.

[0181] It is understandable that the driving module CTR can also determine the driving voltage value of the non-corrected sub-pixel according to the grayscale value of the non-corrected sub-pixel, and then generate an analog driving voltage of the non-corrected sub-pixel and load it to the pixel driving circuit PDC of the non-corrected sub-pixel to drive the non-corrected sub-pixel. In the embodiment of the present disclosure, the non-corrected sub-pixel refers to other sub-pixels PX other than the corrected sub-pixel, such as each sub-pixel PX in a non-luminous pixel, such as each sub-pixel PX in a pixel that emits two or three colors of light, and another example is each luminous sub-pixel.

[0182] In one example, the driving module CTR further includes a driving unit, which is used to drive the correction sub-pixel according to the black state voltage compensation value of the correction sub-pixel. Further, the driving unit is also used to drive the non-correction sub-pixel according to the driving voltage value of the non-correction sub-pixel.

[0183] In one example, see Fig. 9 , the driving unit includes a latch subunit and a conversion subunit. The latch subunit is used to store the black state voltage compensation value of the correction subpixel and the driving voltage value of the non-correction subpixel; the conversion subunit is used to generate the analog driving voltage of the correction subpixel according to the black state voltage compensation value of the correction subpixel, and to generate the analog driving voltage of the non-correction subpixel according to the driving voltage value of the non-correction subpixel. After generating the analog driving voltage of each subpixel PX, the conversion subunit can load the analog driving voltage of the subpixel PX to the pixel driving circuit PDC to which the subpixel PX is electrically connected. Furthermore, the conversion subunit can include a digital-to-analog conversion circuit and an amplification circuit, the digital-to-analog conversion circuit can convert the driving voltage value into an analog driving voltage, and the amplification circuit can increase the driving current when the analog driving voltage is loaded to the pixel driving circuit PDC.

[0184] In one embodiment of the present disclosure, a black state voltage compensation table may be acquired through a black state voltage correction process, and the acquired black state voltage compensation table may be written into a compensation parameter group register of the driving module CTR.

[0185] Fig.10 A schematic diagram of the process of obtaining a first compensation parameter group in the first sub-compensation table. Fig.10 , the display device can be made to perform the first sub-pixel debugging mode, and then obtain a target grayscale value of the first sub-pixel, which is the grayscale value of the first sub-pixel PR in the first compensation parameter group. The voltage determination unit can determine the driving voltage value of the first sub-pixel PR according to the target grayscale value of the first sub-pixel PR. Fig.10 In the example, the correction sub-pixel in the monochrome pixel where the first sub-pixel PR emits light is the second sub-pixel PG, so the voltage determination unit determines the driving voltage value of the third sub-pixel PB according to the grayscale value (0) of the third sub-pixel PB. A candidate value of the black state voltage compensation value of the second sub-pixel PG can be written into the compensation parameter group register, and the compensation unit uses the candidate value of the black state voltage compensation value of the second sub-pixel PG written as the black state voltage compensation value of the second sub-pixel PG in the current stage. Then, the driving unit drives the display panel PNL according to the driving voltage value of the first sub-pixel PR, the driving voltage value of the third sub-pixel PB, and the black state voltage compensation value of the second sub-pixel PG. After the display panel PNL displays the picture, the detection system collects the display picture of the display panel PNL to determine the actual display parameters of the first sub-pixel PR and judge whether the light emission of the first sub-pixel PR meets the preset standard, for example, judge whether the light emission intensity of the first sub-pixel PR meets the color standard of CIE. If the light emission of the first sub-pixel PR meets the preset standard, then the candidate value of the black state voltage compensation value of the second sub-pixel PG is saved as the black state voltage compensation value of the second sub-pixel PG in the first compensation parameter group. If the luminescence of the first sub-pixel PR does not meet the preset standard, a new candidate value of the black state voltage compensation value of the second sub-pixel PG is written into the compensation parameter group register and overwrites the original candidate value, and display and detection are performed based on the new candidate value until a certain candidate value makes the luminescence of the first sub-pixel PR meet the preset standard.

[0186] In the process of acquiring the first sub-compensation table, the above method may be referred to to acquire and save each first compensation parameter group one by one.

[0187] Fig.11 A schematic diagram of the process of obtaining a second compensation parameter group in the second sub-compensation table. Fig.11, the display device can be made to enter the second sub-pixel debugging mode, and then obtain a target grayscale value of the second sub-pixel, which is the grayscale value of the second sub-pixel PG in the second compensation parameter group. The voltage determination unit can determine the driving voltage value of the second sub-pixel PG according to the target grayscale value of the second sub-pixel PG. Fig.11 In the example, the correction sub-pixels in the monochrome pixel where the second sub-pixel PG emits light are the first sub-pixel PR and the third sub-pixel PB. A candidate value of the black state voltage compensation value of the first sub-pixel PR and a candidate value of the black state voltage compensation value of the third sub-pixel PB can be written into the compensation parameter group register, and the compensation unit uses the candidate value of the black state voltage compensation value of the first sub-pixel PR written in as the black state voltage compensation value of the first sub-pixel PR in the current stage, and the compensation unit uses the candidate value of the black state voltage compensation value of the third sub-pixel PB written in as the black state voltage compensation value of the third sub-pixel PB in the current stage. Then, the driving unit drives the display panel PNL according to the driving voltage value of the second sub-pixel PG, the black state voltage compensation value of the third sub-pixel PB, and the black state voltage compensation value of the first sub-pixel PR. After the display panel PNL displays the picture, the detection system collects the display picture of the display panel PNL to determine the actual display parameters of the second sub-pixel PG and judge whether the light emission of the second sub-pixel PG meets the preset standard, for example, judge whether the light emission intensity of the second sub-pixel PG meets the CIE color standard. If the light emission of the second sub-pixel PG reaches the preset standard, the candidate value of the black state voltage compensation value of the first sub-pixel PR is saved as the black state voltage compensation value of the first sub-pixel PR in the second compensation parameter group, and the candidate value of the black state voltage compensation value of the third sub-pixel PB is saved as the black state voltage compensation value of the third sub-pixel PB in the second compensation parameter group. If the light emission of the second sub-pixel PG does not reach the preset standard, a new candidate value of the black state voltage compensation value of the first sub-pixel PR and / or a new candidate value of the black state voltage compensation value of the third sub-pixel PB are written into the compensation parameter group register (at least one candidate value is changed in the candidate value combination formed by the candidate value of the black state voltage compensation value of the first sub-pixel PR and the candidate value of the black state voltage compensation value of the third sub-pixel PB) and overwrite the original candidate value, and display and detection are performed based on the new candidate value until a certain candidate value combination makes the light emission of the second sub-pixel PG reach the preset standard.

[0188] In the process of acquiring the second sub-compensation table, the above-mentioned method may be referred to to acquire and save each second compensation parameter group one by one.

[0189] Fig.12 A schematic diagram of the process of obtaining a third compensation parameter group in the third sub-compensation table. Fig.12, the display device can be made to perform the third sub-pixel debugging mode, and then obtain a target grayscale value of the third sub-pixel, which is the grayscale value of the third sub-pixel PB in the third compensation parameter group. The voltage determination unit can determine the driving voltage value of the third sub-pixel PB according to the target grayscale value of the third sub-pixel PB. Fig.12 In the example, the correction sub-pixel in the monochrome pixel where the third sub-pixel PB emits light is the second sub-pixel PG, so the voltage determination unit determines the driving voltage value of the first sub-pixel PR according to the grayscale value (0) of the first sub-pixel PR. A candidate value of the black state voltage compensation value of the second sub-pixel PG can be written into the compensation parameter group register, and the compensation unit uses the candidate value of the black state voltage compensation value of the second sub-pixel PG written as the black state voltage compensation value of the second sub-pixel PG in the current stage. Then, the driving unit drives the display panel PNL according to the driving voltage value of the first sub-pixel PR, the driving voltage value of the third sub-pixel PB, and the black state voltage compensation value of the second sub-pixel PG. After the display panel PNL displays the picture, the detection system collects the display picture of the display panel PNL to determine the actual display parameters of the third sub-pixel PB and judge whether the light emission of the third sub-pixel PB meets the preset standard, for example, judge whether the light emission intensity of the third sub-pixel PB meets the color standard of CIE. If the light emission of the third sub-pixel PB meets the preset standard, then the candidate value of the black state voltage compensation value of the second sub-pixel PG is saved as the black state voltage compensation value of the second sub-pixel PG in the third compensation parameter group. If the luminescence of the third sub-pixel PB does not meet the preset standard, a new candidate value of the black state voltage compensation value of the second sub-pixel PG is written into the compensation parameter group register and overwrites the original candidate value, and display and detection are performed based on the new candidate value until a certain candidate value makes the luminescence of the third sub-pixel PB meet the preset standard.

[0190] In the process of acquiring the third sub-compensation table, the above method may be referred to to acquire and save each third compensation parameter group one by one.

[0191] It should be noted that, although the steps of the driving method of the display device in the present disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0192] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A method for driving a display device, characterized in that: include: Determine monochrome pixels according to the picture data; Among the sub-pixels of the monochrome pixel, only one color of the sub-pixel emits light; Determining a black state voltage compensation value of a correction sub-pixel of the monochrome pixel according to a black state voltage compensation table and a grayscale value of a light-emitting sub-pixel in the monochrome pixel; The correction sub-pixel is located in the monochrome pixel and does not emit light; The correction sub-pixel is driven according to the black state voltage compensation value of the correction sub-pixel.

2. The driving method according to claim 1, characterized in that: In the monochrome pixel, at least part of the correction sub-pixels are adjacent to the light-emitting sub-pixels.

3. The driving method according to claim 1, characterized in that: The pixel includes multiple second sub-pixels, and includes a first sub-pixel and a third sub-pixel adjacent to at least one second sub-pixel; when at least one second sub-pixel in the monochrome pixel emits light, at least one of the first sub-pixel and the third sub-pixel serves as the correction sub-pixel.

4. The driving method according to claim 1, characterized in that: The pixel includes a first sub-pixel and a third sub-pixel, and includes a second sub-pixel located between the first sub-pixel and the third sub-pixel; in a monochrome pixel in which the first sub-pixel serves as a light-emitting sub-pixel, the third sub-pixel does not serve as a correction sub-pixel of the monochrome pixel; in a monochrome pixel in which the third sub-pixel serves as a light-emitting sub-pixel, the first sub-pixel does not serve as a correction sub-pixel of the monochrome pixel.

5. The driving method according to claim 1, characterized in that: The pixel includes at least three sub-pixels of different colors; in the monochrome pixel, the sub-pixels with a color different from that of the luminous sub-pixel are all correction sub-pixels of the monochrome pixel.

6. The driving method according to any one of claims 1 to 5, characterized in that: The black state voltage compensation table includes multiple sub-compensation tables corresponding to the colors of the luminous sub-pixels respectively; any sub-compensation table includes multiple compensation parameter groups, and any compensation parameter group includes the grayscale value of the luminous sub-pixel in the monochrome pixel and the black state voltage compensation value of the correction sub-pixel in the monochrome pixel.

7. The driving method according to claim 6, characterized in that: The compensation parameter group of the sub-compensation table includes a plurality of binding point compensation parameter groups, wherein the binding point compensation parameter groups include binding point grayscale values ​​of light-emitting sub-pixels and binding point black state voltage compensation values ​​of correction sub-pixels; The determining of the black state voltage compensation value of the correction sub-pixel comprises: When determining the black state voltage compensation value of at least part of the correction sub-pixel, the black state voltage compensation value of the correction sub-pixel is determined by linear interpolation method according to two binding point compensation parameter groups and the grayscale value of the luminescent sub-pixel.

8. A driving module for a display device, characterized in that: include: A detection unit, for determining monochrome pixels based on the picture data; Among the sub-pixels of the monochrome pixel, only one color of the sub-pixel emits light; A compensation unit, configured to determine a black state voltage compensation value of a correction sub-pixel of the monochrome pixel according to a black state voltage compensation table and a grayscale value of a light-emitting sub-pixel in the monochrome pixel; The correction sub-pixel is located in the monochrome pixel and does not emit light; A driving unit is used to drive the correction sub-pixel according to the black state voltage compensation value of the correction sub-pixel.

9. The driving module according to claim 8, characterized in that: The driving module also includes: A voltage determination unit, used to determine a driving voltage value of a non-corrected sub-pixel according to a grayscale value of the non-corrected sub-pixel; The driving unit comprises: A latch subunit, used for storing the black state voltage compensation value of the correction sub-pixel and the driving voltage value of the non-correction sub-pixel; The conversion subunit is used to generate the analog driving voltage of the correction subpixel according to the black state voltage compensation value of the correction subpixel, and to generate the analog driving voltage of the non-correction subpixel according to the driving voltage value of the non-correction subpixel.

10. A display device, characterized in that: Comprising the drive module described in claim 8 or 9.

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