Display device and electronic equipment

Abstract

This application belongs to the field of display technology and provides a display device and electronic device. In the display device, multiple display pixels are arranged in N columns and M rows. The data driving module adjusts the parameters of the data driving signal on each data line through its internal data driving switch to control the optical parameters of the corresponding display pixels. The scan driving module adjusts the parameters of the scan driving signal on the scan line through its internal scan driving switch. The control module adjusts the parameters of the data driving signal according to the layout architecture of the display pixels and the gate coupling effect of adjacent columns of display pixels to make the gray levels of adjacent columns of display pixels match each other. This compensates for the brightness shift of erroneous display pixels, thereby achieving the effect of visually canceling the display color shift and solving the problem of display color shift caused by electric field interference between the gates of adjacent display driving switches.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display device and electronic device. Background Technology

[0002] The semi-source structure can reduce costs by reducing the number of DDICs, COFs, and PCBAs, thereby reducing IC assembly time and significantly lowering IC costs.

[0003] However, the half-source structure requires the addition of a dual-gate design, which causes mutual interference between the electric fields of the two gates, leading to malfunctions of adjacent pixels or color shifts in the display. Summary of the Invention

[0004] This application provides a display device and electronic device, which aims to solve the problem of color deviation caused by malfunction of adjacent pixels in existing half-source structures.

[0005] To address the aforementioned technical problems, this application provides a display device, comprising: Multiple display pixels, wherein the multiple display pixels are distributed in M ​​rows × N columns; A data driving module and multiple data lines are provided, wherein the data driving module provides data driving signals to N columns of display pixels via the data lines; wherein the data driving signals are configured to control the electrical parameters of the pixel electrodes of the corresponding columns of display pixels; A scan driving module and multiple scan lines are provided, wherein the scan driving module provides scan driving signals to the M rows of display pixels via the scan lines; the scan driving signals are configured to control the power-on time of the pixel electrodes of the corresponding rows of display pixels; The control module, connected to the data driving module and the scan driving module, is configured to adjust the parameters of the data driving signal according to the cabling layout architecture of the display pixels and the gate coupling effect of adjacent columns of display pixels, so that the grayscale of the display pixels in two adjacent columns matches each other.

[0006] In some embodiments, the control module is further configured to determine adjustable column display pixels and reference column display pixels when color shift occurs in the display pixels of adjacent columns, and adjust the parameters of the data driving signal corresponding to the adjustable column display pixels based on the parameters of the data driving signal on the data line corresponding to the reference column display pixels, wherein the parameters of the data driving signal include at least one of frame rate, high-level voltage, and duty cycle.

[0007] In some embodiments, each column of the display pixels includes two columns of sub-pixels, and each row of the display pixels includes two rows of sub-pixels, M≥2, N≥2, and M and N are positive integers; The data driving module is configured to control the optical parameters of the sub-pixel according to the data driving signal; The scan driving module is configured to select the corresponding sub-pixel and write it to the data driving signal according to the scan driving signal.

[0008] In some embodiments, the number of data lines is N, and the number of scan lines is 4M; N data lines are connected to N columns of display pixels. Two columns of sub-pixels in the same column of display pixels are respectively set on both sides of each data line. The sub-pixels on both sides of each data line are connected to the data line. The 4M scan lines are connected to the M rows of display pixels. Each row of display pixels is connected to four scan lines. Each group of scan lines includes four scan lines. The four sub-pixels in each display pixel are respectively connected to the four scan lines.

[0009] In some embodiments, each column of display pixels corresponds to one data line; The four sub-pixels within each display pixel are connected to the same data line. The control module is also configured to adjust the data driving signal on the data line corresponding to the display pixel adjacent to the preset column pixel when the preset column pixel is abnormally opened, and adjust the parameters of the data driving signal corresponding to the adjacent display pixel based on the optical parameters of the preset column pixel.

[0010] In some embodiments, the number of data lines is 2N, and the number of scan lines is 2M; Each of the 2N data lines is connected to one of the 2N columns of sub-pixels; the two columns of sub-pixels within each column of the display pixel are connected to the same data signal port via their corresponding data lines. Each of the 2M scan lines is connected to a corresponding sub-pixel in each of the 2M rows.

[0011] In some embodiments, each row of sub-pixels corresponds to a scan line, and each column of sub-pixels corresponds to a data line; The control module is also configured to adjust the data driving signal on the data line corresponding to the display pixel adjacent to the preset column pixel when the preset column pixel is abnormally opened, and adjust the parameters of the data driving signal corresponding to the adjacent display pixel based on the optical parameters of the preset column pixel.

[0012] In some embodiments, each of the display pixels includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a mixed sub-pixel, wherein the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the mixed sub-pixel are arranged sequentially in a 2×2 combination. The red sub-pixel is configured to emit red light when lit; The green sub-pixel is configured to reflect green light when illuminated; The blue sub-pixel is configured to reflect blue light when illuminated; The hybrid sub-pixels are configured to reflect white light.

[0013] In some embodiments, the control module is further configured to, when the nth data line and the (n+1)th data line in the same row of display pixels are turned on and turned on in sequence, adjust the frame rate A2=A1×a of the data driving signal corresponding to the sub-pixel in the unturned column based on the parameters of the sub-pixel in the turned-on column, where 0.5≤a≤1.5, A1 is the initial frame rate of the data driving signal, n is a positive integer, and the color shift value of adjacent display pixels is related to a.

[0014] A second aspect of this application also provides an electronic device, including a display device as described in any of the foregoing embodiments.

[0015] In this embodiment, multiple display pixels in the display device are arranged in N columns and M rows. The data driving module controls the optical parameters of the corresponding display pixels by adjusting the parameters of the data driving signal on each data line through its internal data driving switch. The scan driving module adjusts the parameters of the scan driving signal on the scan line through its internal scan driving switch. The control module adjusts the parameters of the data driving signal according to the layout of the display pixels and the gate coupling effect of adjacent columns of display pixels to make the grayscale of adjacent columns of display pixels match each other. This compensates for the brightness shift of erroneous display pixels, thereby achieving the effect of visually canceling the display color shift and solving the problem of display color shift caused by the electric field interference between the gates of adjacent display driving switches. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1a A schematic diagram of display pixels provided in an embodiment of this application; Figure 1b A schematic diagram of display pixels provided in the embodiments of this application. Figure 2 ; Figure 1c A schematic diagram of display pixels provided in the embodiments of this application. Figure 3 ; Figure 2 A schematic diagram of the structure of the display device provided in the embodiments of this application is shown below; Figure 3 Schematic diagram of the structure of the display device provided in the embodiments of this application Figure 2 ; Figure 4 A schematic diagram of the scan drive signal provided in an embodiment of this application; Figure 5 This is a schematic diagram of color deviation of the display device provided in the embodiments of this application; Figure 6 Schematic diagram of the structure of the display device provided in the embodiments of this application Figure 3 . Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0018] The term "comprising," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus. Furthermore, the terms "first," "second," and "third," etc., are used to distinguish different objects, not to describe a specific order.

[0019] In electronic paper (E-paper) or electrophoretic displays, each display pixel is equipped with a thin-film transistor (TFT) to achieve precise control of row gating and column data writing. This supports high-resolution (e.g., above 300 PPI) and large-size (e.g., large-size electronic paper tablets) displays. Utilizing the "memory characteristics" of electrophoretic particles, they retain their position after power is turned off. Once the electric field is removed, the electrophoretic particles will maintain their current position due to the viscous resistance inside the electrophoretic display layer, thus maintaining the image display without continuous power supply. This achieves the goal of retaining the original grayscale display for a long time after power is turned off. It only consumes power during refresh and has no continuous power consumption during display, with a battery life of up to several weeks (e.g., e-readers).

[0020] In this embodiment, combined with Figure 1a As shown, the display pixel includes a pixel electrode 510, an electrophoretic display layer 520, a full-surface electrode 530, and a color filter 540 stacked sequentially. The color filter 540 is located on top of the pixel structure, and the electrophoretic display layer 520 is located between the full-surface electrode 530 and the pixel electrode 510. The electrophoretic display layer 520 can be a microcapsule structure, a microcup structure, or a microcavity structure, etc. For example, a microcapsule structure... Figure 1b As shown, the electrophoretic display layer 520 includes several microcapsules 521, with microcavity or microcup structures as follows: Figure 1c As shown, the electrophoretic display layer 520 includes several microcavity structures 522.

[0021] In this embodiment, combined with Figure 1b As shown, the electrophoretic display layer 520 includes a plurality of microcapsules 521, each microcapsule 521 encapsulating two types of electrophoretic particles 501, at least one of which is charged; for example, each microcapsule 521 contains black particles (…). Figure 1b (solid dots) and white particles ( Figure 1b In the hollow circle of the microcapsule 521, at least one of the black and white particles is charged. If both are charged, they have opposite charges (e.g., black particles are negatively charged and white particles are positively charged, or black particles are positively charged and white particles are negatively charged). The electrophoretic particles 501 inside the microcapsule 521 are encapsulated by an electrophoretic medium. When a voltage is applied to the pixel electrode 510, an electric field is generated. When the voltage of the pixel electrode 510 is greater than the voltage of the top full-surface electrode 530, the white particles (positively charged) move towards the top electrode (covering the top), and the black particles (negatively charged) move towards the pixel electrode 510 (sinking to the bottom). When light shines on it, the top is covered by white particles, and the reflected light enters the human eye, making the microcapsule 521 (i.e., the sub-pixel) display white. After the power is turned off, the electrophoretic particles 501 remain in their current position due to the viscous resistance and electrostatic adsorption of the electrophoretic liquid, thus achieving "bistable state" (still displaying white when the power is off). The color displayed by the microcapsule 521 is determined by the emission color of the backlight.

[0022] In some embodiments, such as Figure 1b As shown, the electrophoretic display layer 520 may include multiple microcavity structures 522, and each sub-pixel may include several microcavity structures 522. By setting a color filter 540, red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels can be set accordingly. The arrangement of the microcavity structures 522 can be square or linear according to the application scenario. By adding a color filter 540 above the entire electrode 530, different sub-pixels (such as R, G, B, and W sub-pixels) can display corresponding colors, thereby enabling the display pixels to combine to form a full-color image.

[0023] In some embodiments, the pixel electrode 510 serves as an independent driving electrode for each pixel. The pixel electrode 510 cooperates with the upper full-surface electrode 530 to control the movement direction of electrophoretic particles within the electrophoretic display layer 520 by applying different voltages. The electrophoretic particles themselves do not emit light; they rely on reflecting ambient light to display images. The role of black and white particles is to control whether light is absorbed or reflected. When white particles move to the top of the electrophoretic display layer 520, they reflect the incident light back to the human eye, making the sub-pixel appear white. When black particles move to the top of the electrophoretic display layer 520, they absorb most of the incident light, making the pixel appear black. In the color display process of electronic paper, a color filter technology is typically used to cover an RGB color filter layer above the electrophoretic display layer 520 (near the full-surface electrode 530). Black and white particles generate color by controlling whether light passes through the color filter. When white particles move to the top, the light is reflected and passes through the upper color filter. For example, if the color filter is red, reflected light passing through the red filter will appear red in the sub-pixel. When black particles move to the top, the light is absorbed, and regardless of the color of the filter above, the pixel will appear black or dark gray. Thus, white particles are responsible for "opening windows," allowing light to pass through the color filter and producing color, while black particles are responsible for "closing windows," absorbing light and producing a black or dark background to enhance contrast.

[0024] In a dual-gate design, the scan drive switches (e.g., scan lines controlling adjacent pixels in the same column) connected to the two gate lines are physically very close together. When a voltage is applied to one gate line (G) to turn on the thin-film transistor (TFT) it controls, the scan drive switch connected to the gate line (G) may interfere with each other, causing adjacent sub-pixels to malfunction and resulting in color shift in the displayed pixels. In a half-source architecture, the data line voltage switches rapidly with grayscale changes. Since the data line (S) is connected to the same column of display pixels via two data drive switches, the electric fields of adjacent data drive switches may interfere with each other, causing color shift in adjacent display pixels.

[0025] To address the aforementioned technical problems, this application provides a display device, see [link to relevant documentation]. Figure 2As shown, the display device in this embodiment includes: a data driving module 300, multiple data lines, a scan driving module 200, multiple scan lines, a control module 400, and a display area 100. The display area 100 includes multiple display pixels AA, which are arranged in an M-row × N-column configuration. The data driving module 300 provides data driving signals to the display pixels AA in the display area 100 through the multiple data lines. The data driving signals are configured to control the voltage of the pixel electrodes of the corresponding columns of display pixels. The scan driving module 200 provides scan driving signals to the display pixels AA in the display area 100 through the multiple scan lines. The scan driving signals are configured to control the power-on time of the pixel electrodes of the corresponding rows of display pixels. Through the combination of the scan driving signals and the data driving signals, the optical parameters of each display pixel are precisely controlled.

[0026] Combination Figure 2 As shown, the data driving module 300 provides data driving signals to N columns of display pixels via multiple data lines, and the scan driving module 200 provides scan driving signals to M rows of display pixels via multiple scan lines. The scan driving signals control row selection, and the data driving signals control the input voltage, thereby controlling the voltage of the pixel electrode of each display pixel. This, in turn, drives the movement of charged electrophoretic particles through an electric field, thus controlling the brightness of the corresponding display pixel when reflecting backlight. In the display pixel array, due to the wiring layout of the display pixels AA, some switching devices have adjacent gates. This causes voltage jumps during gate voltage transitions, coupling these devices to adjacent gate lines (e.g., scan lines), interfering with the charging state of adjacent display pixels and resulting in uneven display. The control module 400 is connected to the data driving module 300 and the scan driving module 200. The control module 400 adjusts the parameters of the data driving signals according to the wiring layout of the display pixels AA and the gate coupling effect of adjacent columns of display pixels AA, so that the grayscale of adjacent columns of display pixels matches each other.

[0027] In this embodiment, due to a voltage jump on the scan line (e.g., from high to low level), and the presence of parasitic capacitance on the switching device or ribbon cable, this voltage change is capacitively coupled to the pixel electrode, causing a voltage shift in the pixel electrode. For example, a switch that should be closed may have its pixel electrode voltage pulled up or down due to gate coupling, resulting in a pixel that should be off not being completely turned off, thus causing a shift in the grayscale level of that pixel. In this embodiment, because erroneous grayscale levels cannot be quickly corrected by "refreshing," an algorithm performs pre-correction during the current writing stage. While the grayscale level of the erroneously displayed pixel remains, the parameters of the currently written data drive signal are adjusted, i.e., the brightness of the adjacent display pixels of the erroneously displayed pixel is adjusted, to compensate for the brightness shift of the erroneously displayed pixel, thereby visually offsetting the color shift.

[0028] In some embodiments, the display pixel AA utilizes the stable switching between "planar state" (reflected light) and "focal cone state" (scattered light) of electrophoretic particles, with power applied during switching and power removed after switching, thereby utilizing the bistable characteristics of electrophoretic particles to maintain the display of the image for a long time with low power consumption.

[0029] In some embodiments, in the driving of display pixels (such as electronic paper), "column" is defined by data line, typically in the vertical direction, and "row" is defined by scan line, typically in the horizontal direction.

[0030] In some embodiments, the display device is further provided with a pixel detection module, which can detect the brightness of the display pixel and the control module 400 determines whether the display pixel has a color shift. When adjacent display pixels have a color shift, the control module 400 can detect the on / off state of adjacent display driving switches. For example, if the ribbon cable layout architecture of display pixels AA is different, the routing of the data lines and scan lines between the pixels is different, and the position settings of the corresponding driving switches are also different. If the distance between two adjacent display driving switches (scan driving switches or data driving switches) is less than a preset threshold (for example, the preset threshold can be half the side length of a sub-pixel), there may be a problem of mutual interference between the two adjacent display driving switches. The parameters of the data driving signal are adjusted based on the difference in the switching state, thereby eliminating the display color shift caused by mutual interference between adjacent display driving switches.

[0031] In some embodiments, when the brightness of a display pixel deviates from the brightness required to display the data, it indicates that the display pixel has a color shift.

[0032] In some embodiments, each column of display pixels includes two columns of sub-pixels, each row of display pixels includes two rows of sub-pixels, and each display pixel includes four sub-pixels. The grayscale of each sub-pixel is determined by the data driving signal and the scan driving signal. If the grayscale of the sub-pixel deviates from the target grayscale during display, it is considered that the display pixel where the sub-pixel is located has a display color shift.

[0033] In some embodiments, combined with Figure 3As shown, when the switch on data line S1 is on and the switch on data line S2 is off, a gate coupling effect occurs in each sub-pixel of all horizontal pixels corresponding to scan switch GK12. A voltage difference appears between sub-pixels R11 and R12, causing color shift in the column of display pixels corresponding to data line S1. In the sub-pixel column, sub-pixel G11 is an even-numbered column. If data line S1 provides a data signal but data line S2 does not, the red sub-pixel R12 is not completely turned off due to the coupling effect. The red sub-pixel R12 displays a lighter red, failing to meet the standard color mixing requirements, thus causing color shift. Meanwhile, the red sub-pixel R12 turns on prematurely due to the coupling effect. Since the red sub-pixel R12 is not turned on, the display parameters of sub-pixel R11 are adjusted to compensate for the abnormal display of the red sub-pixel R12, thereby mitigating the color shift.

[0034] In some embodiments, there is no color shift when sub-pixels R11 and R12 are turned on simultaneously. If the target gray level of sub-pixels R11 and R12 is 120, and sub-pixels R11 are turned on while sub-pixels R12 are not turned on, based on the characteristics of electrophoretic particles in the display pixel in this application (if no electrical charge is applied, the gray level will always be at the target gray level), if the original gray level of sub-pixels R12 is 120, and sub-pixels R11 are turned on to 120, the gray level of sub-pixels R12 will not reach 120 due to the coupling effect. Therefore, the duty cycle of sub-pixels R11 is adjusted to match the gray levels of sub-pixels R11 and R12.

[0035] In some embodiments, the control module 400 is further configured to determine the adjustable column display pixel and the reference column display pixel when color shift occurs in adjacent display pixels AA, and adjust the parameters of the data driving signal corresponding to the adjustable column display pixel based on the parameters of the data driving signal on the data line corresponding to the reference column display pixel.

[0036] In this embodiment, the parameters of the data driving signal include at least one of frame rate, high-level voltage, and duty cycle. Typically, due to the gate coupling effect, the display driving switch corresponding to the reference column display pixel may be turned on prematurely, causing color shift in the display of the reference column display pixel. This application adopts a "make the best of a bad situation" approach, keeping the grayscale of the incorrectly displayed pixel unchanged and using it as the reference column display pixel, and using the subsequently turned-on display pixel as the adjustable column display pixel. Then, by adjusting the frame rate, high-level voltage, and duty cycle of the data driving signal corresponding to the subsequently turned-on display pixel, the display brightness of the adjustable column display pixel is adaptively adjusted to compensate for the grayscale of the incorrectly displayed pixel, achieving grayscale matching between adjacent columns of display pixels and visually canceling the color shift.

[0037] In some embodiments, since the display driver switches are adjacent to each other, when the distance between two adjacent display driver switches (scan driver switches or data driver switches) is less than a preset threshold, the display pixel AA controlled by the first turned-on display driver switch can be used as the reference column display pixel, and the column of display pixels corresponding to the second turned-on display pixel can be used as the adjustable column display pixel. In this way, the parameters of the data driving signal corresponding to the adjustable column display pixel can be adjusted according to the grayscale of the reference column display pixel, so that the grayscale of the two adjacent columns of display pixels can match each other, thereby achieving the effect of visually canceling color shift.

[0038] In some embodiments, the control module 400 can also acquire the brightness value of each column of display pixels AA, determine whether there are display pixels with errors based on the brightness value and the corresponding scan drive signal and data drive signal, and use the display pixels with errors as the reference column display pixels, adjust the parameters of the data drive signal of the adjustable column display pixels after they are turned on, so that the gray levels of two adjacent columns of display pixels match each other, thereby achieving the effect of visually canceling color shift.

[0039] Combination Figure 3 As shown, taking a target grayscale of 120 for the red sub-pixel R as an example, due to the gate coupling effect, the grayscale of sub-pixel R12 is unexpectedly changed (failing to reach the target of 120). The bistable characteristic of the display pixel means that this "erroneous" grayscale will remain until it is rewritten next time, thus causing color shift. The actual grayscale of the red sub-pixel R12 is lower than 120 (let's say it becomes 80). At this time, by accepting the erroneous display of the red sub-pixel R12, the algorithm adjusts the duty cycle (PWM) or data voltage of the red sub-pixel R11 to make the grayscale of the red sub-pixel R11 higher than the red sub-pixel 120 (for example, adjusted to 160), compensating for the brightness loss of the red sub-pixel R12. In this way, the average effect of the red sub-pixel R11 (160 grayscale) and the red sub-pixel R12 (80 grayscale) is approximately equal to 120 grayscale, thus visually canceling the color shift.

[0040] In some embodiments, each column of display pixels AA includes two columns of sub-pixels, each row of display pixels AA includes two rows of sub-pixels, and each display pixel AA includes four sub-pixels, M≥2, N≥2, where M and N are positive integers.

[0041] Combination Figure 2As shown, the data driving module 300 provides data driving signals to 2N columns of sub-pixels via multiple data lines; wherein, the data driving signals are configured to control the brightness of the reflected light of the corresponding sub-pixels; the scan driving module 200 provides scan driving signals to 2M rows of sub-pixels via multiple scan lines. The control module 400 is connected to the data driving module 300 and the scan driving module 200. The control module 400 is configured to adjust the parameters of the data driving signals on the data lines corresponding to the adjacent undisplayed display pixels when a preset column pixel is abnormally turned on, i.e., the preset column pixel is incorrectly displayed due to the gate coupling effect. Based on the optical parameters of the preset column pixel, the control module 400 adjusts the parameters of the data driving signals on the data lines corresponding to the adjacent undisplayed display pixels of the preset column pixel, so that the gray levels of the two adjacent columns of display pixels match each other, achieving the effect of visually canceling color shift.

[0042] In some embodiments, the control module 400 is configured to detect the switching state of adjacent display driver switches when a preset column pixel is abnormally turned on, i.e., the preset column pixel is incorrectly displayed due to the gate coupling effect. Based on the difference in the switching state, the parameters of the data driving signal are adjusted to eliminate the display color shift caused by mutual interference between adjacent display driver switches.

[0043] In this embodiment, multiple display pixels AA within the display device are arranged in N columns and M rows. Each display pixel AA includes four sub-pixels. The display parameters of each display pixel AA are determined by the optical parameters of the monochromatic light reflected by its four sub-pixels. The optical parameters of the monochromatic light reflected by each sub-pixel are determined by the scan drive signal on the scan line and the data drive signal on the data line connected to it. The display drive switch may include a data drive switch and a scan drive switch. The data drive module 300 adjusts the parameters of the data drive signal on the data line through its internal data drive switch, and the scan drive module 200 adjusts the parameters of the scan drive signal on the scan line through its internal scan drive switch. In this embodiment, the control module 400 detects the color shift of the preset column pixels and determines the parameters of the corresponding data drive signal of the non-conductive display pixels based on the color shift, so that the gray levels of adjacent display pixels match each other, thereby solving the problem of color shift caused by electric field interference between the gates of adjacent drive switches.

[0044] In some embodiments, the gate coupling effect in a display pixel is a physical phenomenon caused by parasitic capacitance. In TFT-LCDs or electronic paper arrays, parasitic capacitances (Cgd, Cgs) are formed between adjacent scan lines or between scan lines and data lines due to their close physical distance. When the voltage of a scan line (such as GK21) changes abruptly (from low level to high level, or from high level to low level), a voltage spike or voltage fluctuation is induced on an adjacent scan line (such as GK12) due to the coupling effect of the parasitic capacitance. This causes the adjacent scan drive switch to malfunction (turn on prematurely or turn off delayedly), thereby disrupting the normal progressive scan timing. In this embodiment, by monitoring whether adjacent display driver switches malfunction due to coupling, or predicting whether there is a situation where coupling causes malfunction according to the cable layout architecture of the display pixels, instead of directly modifying the interfering scan driver signal, the data driver signal is adjusted. For example, the parameters of the corresponding data driver signals of adjacent sub-pixels of the same type are adjusted to match the sub-pixels that are malfunctioning due to interference, thereby visually offsetting the color shift.

[0045] In some embodiments, each display pixel AA includes a red subpixel R, a green subpixel G, a blue subpixel B, and a mixed subpixel W, arranged sequentially in a 2x2 row configuration. The red subpixel R is configured to emit red light when illuminated, the green subpixel G is configured to reflect green light when illuminated, the blue subpixel B is configured to reflect green light when illuminated, and the mixed subpixel W is configured to reflect white light.

[0046] In this embodiment, the hybrid sub-pixel can be a punch-hole design and is configured to reflect the emitted light within the display pixel AA.

[0047] In some embodiments, combined with Figure 3 As shown, there are N data lines and 4M scan lines. The N data lines are connected one-to-one with the N columns of display pixels AA. The 4M scan lines are connected one-to-one with the M rows of display pixels AA. Each group of four scan lines connects to the four sub-pixels within each display pixel AA.

[0048] In this embodiment, the first row of green sub-pixels G is connected to the first signal terminal G1 of the scan driving module 200 via scan driving switch GK11; the first row of red sub-pixels R is connected to the second signal terminal G2 of the scan driving module 200 via scan driving switch GK12; the first row of mixed sub-pixels W is connected to the third signal terminal G3 of the scan driving module 200 via scan driving switch GK21; the first row of mixed sub-pixels W is connected to the fourth signal terminal G4 of the scan driving module 200 via scan driving switch GK22; the second row of green sub-pixels G is connected to the fifth signal terminal G5 of the scan driving module 200 via scan driving switch GK31; the second row of red sub-pixels R is connected to the sixth signal terminal G6 of the scan driving module 200 via scan driving switch GK32, and so on, with every four scan lines corresponding to one row of display pixels AA.

[0049] In some embodiments, combined with Figure 3 As shown, red sub-pixel R11, green sub-pixel G11, blue sub-pixel G11, and mixed sub-pixel W11 form a first display pixel AA11, and red sub-pixel R12, green sub-pixel G12, blue sub-pixel B12, and mixed sub-pixel W12 form a second display pixel AA12. Since the interference area of ​​red sub-pixel R11, green sub-pixel G11, blue sub-pixel G11, and mixed sub-pixel W11 is only half that of red sub-pixel R21, green sub-pixel G11, blue sub-pixel B12, and mixed sub-pixel W11, the difference in the coupling circuit occurs at the periphery of the display area 100. Therefore, the difference in sub-pixels within the display area 100 also occurs at the periphery. When the first column of sub-pixels is off, red sub-pixel R21, green sub-pixel G11, blue sub-pixel B12, and mixed sub-pixel W11 can form a display pixel AA, and so on.

[0050] In some embodiments, when display pixel AA is working, each display pixel includes four sub-pixels (red sub-pixel, green sub-pixel, blue sub-pixel, and white sub-pixel). The scan drive signal (Gate) on the scan line is responsible for "gating" the sub-pixels and controlling the switching of the TFTs (thin-film transistors) within the pixel. When the scan line is high, the TFT of that row of pixels is turned on, allowing data signals to be written; when the scan line is low, the TFT is turned off, and the pixel enters a "hold" state. The data drive signal (Data) is responsible for "writing" the data drive signal to the sub-pixel. The voltage of the data drive signal determines the voltage of the pixel electrode. By providing a specific voltage value, this voltage is written to the pixel electrode 510 through the turned-on TFT. Its amplitude determines the grayscale depth. The scan drive signal is a pulse width modulation (PWM) signal. The duty cycle of the scan drive signal determines the duration of the voltage on the pixel electrode, and its width determines the grayscale depth. Therefore, the grayscale adjustment of each sub-pixel within the display pixel mainly depends on the electric field strength (e.g., the voltage of the data drive signal) and the duration of action (e.g., the duty cycle of the scan drive signal). The progressive scan mode is adopted, meaning that only one row of sub-pixels is selected at a time. Due to the gate coupling effect, abnormalities in the scan drive signal can cause write timing errors, resulting in sub-pixels being charged at the wrong time. By adjusting the parameters of the data drive signal corresponding to the adjustable column sub-pixels, the voltage deviation caused by the timing errors of the scan drive signal can be compensated, ensuring that the effective voltage (or effective pulse width) of the final written pixel electrode 510 matches the target grayscale.

[0051] In some embodiments, each row of sub-pixels corresponds to two scan lines, each row of display pixels AA corresponds to four scan lines, and each column of display pixels AA corresponds to one data line. The four sub-pixels within each display pixel AA share the same data line. In this embodiment, combined with... Figure 2 and Figure 3As shown, since each column of display pixels AA corresponds to one data line, and the four sub-pixels within each display pixel AA share the same data line, the distance between the gates of the data drive switches connected to the vertical data lines is relatively large. However, when sub-pixel G11 is lit (reflecting the corresponding monochromatic light), scan line G1 and data line S1 need to be turned on simultaneously (the scan line is connected to the corresponding scan drive signal, and the data line is connected to the data drive signal). When sub-pixel R11 is lit, scan line G2 and data line S1 need to be turned on simultaneously. When sub-pixel W11 is lit, scan line G3 and data line S1 need to be turned on simultaneously. When sub-pixel G11 is lit, scan line G4 and data line S1 need to be turned on simultaneously. When sub-pixel G21 is lit, scan line G5 and data line S1 need to be turned on simultaneously. When sub-pixel R21 is lit, scan line G6 and data line S1 need to be turned on simultaneously, and so on. Thus, in order to accommodate 4M scan lines simultaneously within a single row of display pixels AA, the scan drive switches corresponding to the even-numbered and odd-numbered scan lines are positioned close to each other. For example, when scan drive switch GK12 is turned on, electrostatic interference may cause scan drive switch GK21 to conduct. At this time, the data drive signal connected to data line S1 may be written to sub-pixel R11 and sub-pixel W11 simultaneously, causing sub-pixel W11 to reflect light for a longer time, resulting in color shift. Because the gates of the scan drive switches corresponding to the even-numbered and odd-numbered scan lines interfere with each other during switching, adjacent sub-pixels may malfunction, leading to color shift in display pixels AA. To solve this technical problem, when a color shift occurs in a preset display pixel, the control module 400 adjusts the data driving signals on the data lines corresponding to the adjacent display pixels. Using the optical parameters of the incorrectly displayed sub-pixel within the preset display pixel as a reference, the module adjusts the parameters of the data driving signals corresponding to another column of similar sub-pixels adjacent to it. For example, when data line S1 is on and S2 is off, and scan line GK12 is powered on, the TFT (thin-film transistor) of the red sub-pixel R12 should be off. However, due to the coupling effect caused by the voltage jump of scan line GK12, the voltage of the pixel electrode 510 of the red sub-pixel R12 is "lifted" or "pulled down," causing the pixel that should be off to not be completely off (resulting in a light red display). By adjusting the parameters (such as duty cycle or data voltage) of the data driving signals written to the red sub-pixel R11 based on the red sub-pixel R12, the time for the red sub-pixel R12 to reflect light remains unchanged, thereby eliminating the color shift problem.

[0052] Furthermore, since scan drive switches GK12 and GK21 are adjacent, they may interfere with each other, causing changes in the reflection time of the corresponding monochromatic light by sub-pixels R11 and W11. Similarly, scan drive switches GK22 and GK31 are adjacent, and they may interfere with each other, causing changes in the reflection time of the corresponding monochromatic light by sub-pixels G11 and G21. And so on. That is, on the same data line, counting starts from the second data drive signal. Each even-numbered data drive signal is grouped with its next odd-numbered data drive signal. The control module 400 can count the data drive signals on each data line. When counting reaches the data pulse corresponding to the odd-numbered column of sub-pixels, the parameters of the data pulse corresponding to the odd-numbered column of sub-pixels are adjusted to reduce the color shift between odd-numbered and even-numbered column sub-pixels within the same column of display pixels AA, thereby reducing the impact of display color shift caused by mutual interference of electric fields between adjacent scan drive switches.

[0053] In some embodiments, Figure 4 This is a schematic diagram of the scan drive signal. Figure 5 This diagram illustrates color shift caused by electric field-related interference between the gates of adjacent scan drive switches. The gates of scan drive switches GK12 and GK21 are adjacent. Because the high-level times of scan drive signals G2 and G3 are adjacent, the electric field generated when the gate of scan drive signal G3 is triggered may affect the level of the gate of scan drive signal G2. This results in a longer conduction time for sub-pixel R11, leading to higher brightness in sub-pixel R11 and causing malfunctions in adjacent sub-pixels or color shift in display pixel AA. Thus, by determining the cabling layout architecture of the display pixels, the timing of electric field interference can be determined in advance. A preset electric field interference model can be established through the cabling layout architecture of the display pixels, as well as the scan drive signal and the data drive signal. Based on the preset electric field interference model, the control module 400 determines the interference intensity between adjacent drive switches, thereby predicting whether malfunctions will occur between adjacent display drive switches. Based on the prediction results, the parameters (such as duty cycle or voltage) of the data drive signal corresponding to the odd-numbered sub-pixels are directly adjusted when writing data to counteract the gate-to-gate electric field interference between the scan drive switches and solve the display color shift problem.

[0054] In this embodiment, because Figure 3In the driving architecture shown, the scan drive switch GK21 corresponding to the third row of sub-pixels is adjacent to the scan drive switch GK12 corresponding to the second row of sub-pixels, and the scan drive switch GH31 corresponding to the fifth row of sub-pixels is adjacent to the scan drive switch GK22 corresponding to the fourth row of sub-pixels. Furthermore, in progressive scan mode, the high-level timing of the scan drive signal corresponding to the third row of sub-pixels is adjacent to that of the scan drive signal corresponding to the second row of sub-pixels, making scan drive switch GK12 susceptible to electric field interference from scan drive switch GK21. Similarly, the high-level timing of the scan drive signal corresponding to the fifth row of sub-pixels is adjacent to that of the scan drive signal corresponding to the fourth row of sub-pixels, making scan drive switch GK22 susceptible to electric field interference from scan drive switch GK31. Taking the interference between scan drive switches GK21 and GK12 as an example, the control module 400, based on the preset interference model (taking GK21 interfering with GK12 as an example), directly predicts the degree of voltage shift that the red sub-pixel R12 will experience when writing data to GK12, and pre-adds a reverse voltage correction amount to the data signal to cancel the gate electric field interference between the scan drive switches, thus solving the display color shift problem.

[0055] In some embodiments, combined with Figure 3 As shown, there are N data lines and 4M scan lines. The N data lines are connected to N columns of display pixels. Each data line has a column of sub-pixels on both sides, and the sub-pixels on both sides of each data line are connected to the data line. The 4M scan lines are connected to M rows of display pixels. The four sub-pixels in each display pixel are connected to the four scan lines.

[0056] In this embodiment, combined with Figure 3 As shown, N data lines are connected one-to-one with 2N columns of sub-pixels. Each data line is responsible for transmitting data signals for two columns of sub-pixels. Sub-pixel columns are distributed on both sides of each data line. Each complete display pixel (such as R11, R12) contains four sub-pixels (R, G, B, W). The data lines corresponding to the two columns of sub-pixels in each display pixel AA are connected to the same data signal port through the corresponding data drive switches. One row of sub-pixels corresponds to two rows of scan lines. The distance between adjacent scan drive switches is too small, which causes the switching states of adjacent scan drive switches to interfere with each other.

[0057] For example, with Figure 3As shown, when the TFT in the red sub-pixel R11 is turned on, the scan drive switch GK21 corresponding to the mixed sub-pixel W11 is turned on due to interference from the adjacent scan drive switch GK12. This causes the TFT in the mixed sub-pixel W11 to also be affected and turned on, resulting in the pixel electrode 510 voltage being "lifted" or "pulled down". This causes pixels that should be turned off to not be completely turned off, or the grayscale that should be maintained to shift, and so on. As a result, color shift will occur in the sub-pixels on both sides of the first data line S1. At this time, taking the column of sub-pixels with grayscale shift as the reference column of sub-pixels, the parameters of the data drive signals corresponding to the adjacent column of similar sub-pixels that are not yet turned on are adjusted so that the grayscale of the two columns of sub-pixels are matched, achieving the effect of visually canceling the color shift.

[0058] In some embodiments, combined with Figure 3 and Figure 4 As shown, the gate coupling effect mainly comes from adjacent scan lines (such as Gk and Gk+1). In progressive scan mode, the control module 400 identifies the current data line number through a counter. When the count reaches an odd data line (such as S1, S3, S5...), the parameters (such as voltage or duty cycle) of the data driving signal corresponding to the sub-pixel on that data line are adjusted to compensate for the sub-pixel grayscale deviation caused by gate coupling between adjacent scan lines, thereby reducing the display color shift between odd and even data line columns in the same row.

[0059] In some embodiments, if a column of sub-pixels to the left of the first data line S1 is taken as the reference sub-pixels, then the parameters of the data driving signal corresponding to the column of sub-pixels to the left of the second data line S2 are adjusted, combined with... Figure 3 As shown, the high-level pulses on scan lines G2 and G3 are not in the same timing sequence. When the voltage on the scan line changes, due to the presence of parasitic capacitance, this voltage change will be coupled to the pixel electrode 510 through the capacitor, causing the voltage of the corresponding pixel electrode 510 to shift. Therefore, in progressive scan mode, the control module 400 identifies the current data line number through a counter. When an odd number of data lines (such as S1, S3, S5...) are counted, the parameters (such as voltage or duty cycle) of the data driving signal corresponding to the sub-pixel on that data line are adjusted to compensate for the sub-pixel grayscale deviation caused by electric field interference between adjacent scan lines.

[0060] In some embodiments, combined with Figure 6 As shown, there are 2N data lines and 2M scan lines; the 2N data lines are connected one-to-one with the 2N columns of sub-pixels; the two columns of sub-pixels in each column of display pixels are connected to the same data signal port via corresponding data lines; the 2M scan lines are connected one-to-one with the 2M rows of sub-pixels.

[0061] In this embodiment, combined with Figure 6 As shown, each row of sub-pixels corresponds to one scan line, each column of sub-pixels corresponds to one data line, and each column of display pixels AA corresponds to two data lines. Figure 5 As shown, the first data line S1 and the second data line S2 corresponding to the first column of display pixels AA are connected to the same data signal port SS1 via corresponding data drive switches (first data drive switch SK11 and second data drive switch SK12). Since the two data lines corresponding to each column of display pixels AA are connected to the same data signal port via corresponding data drive switches, and the distance between the data drive switches corresponding to the same column of display pixels AA is small, these two data drive switches are easily affected by each other. If a pair of data drive switches (e.g., first data drive switch SK11 and second data drive switch SK12) are simultaneously turned on or off, there will be no problem with pixel mis-display. If the switching times of a pair of data drive switches are inconsistent, it may lead to malfunction of adjacent sub-pixels or color shift. When a column of sub-pixels is mal-triggered, the control module 400 uses it as a reference sub-pixel and adjusts the parameters of the data drive signals on the data lines corresponding to adjacent sub-pixels of the same type according to the optical parameters of the reference sub-pixel. This compensates for the brightness shift of adjacent sub-pixels of the same type, visually canceling the color shift and eliminating the influence of color shift caused by mutual interference of electric fields between adjacent data drive switches.

[0062] In some embodiments, the control module 400, based on a preset interference model (known to be that SK12 will interfere with SK11), directly predicts the extent of voltage shift that the red sub-pixel R12 will experience when writing data to SK21, and pre-adds an inverse parameter correction amount to the data driving signal.

[0063] In this embodiment, the parameters of the data driving signal include at least one of frame rate, high-level voltage, and duty cycle. The superimposed parameter correction amount can adjust the frame rate, high-level voltage, and duty cycle of the data driving signal corresponding to the sub-pixel, thereby enabling its adjacent sub-pixels of the same type to compensate for its brightness shift and visually offset the display color shift.

[0064] In some embodiments, within the same column of display pixels AA, the first data line S1 is connected to the data signal port SS1 via the corresponding first data drive switch SK11, and the second data line S2 is connected to the data signal port SS1 via the corresponding second data drive switch SK12. Due to the characteristics of display pixels, once data is written, the pixel state (e.g., grayscale) is physically locked until it is rewritten. When the scan line G1 is powered on, and the first data drive switch SK11 is turned on, the first column of sub-pixels is opened and displayed according to the corresponding target grayscale. When the second data drive switch SK12 is turned on, the grayscale of the first column of sub-pixels shifts due to the interference generated by the second data drive switch SK12 on the first data drive switch SK11. Thus, by adjusting the duty cycle or high-level voltage of the data drive signal corresponding to the same type of sub-pixel in the second column based on the light parameters of the first column of sub-pixels, the final mixed color is made close to the target color.

[0065] In some embodiments, combined with Figure 3 As shown, the control module 400 is also configured to adjust the frame rate A2=A1×a of the data driving signal corresponding to the activated column sub-pixels based on the parameters of the unactivated column sub-pixels when the nth data line and the (n+1)th data line in the same row of display pixels are activated in sequence, where 0.5≤a≤1.5 and A1 is the initial frame rate of the data driving signal.

[0066] In this embodiment, when the nth data line is turned on and the (n+1)th data line is turned on sequentially, among adjacent columns of sub-pixels, the nth data line is turned on first. After the column of sub-pixels connected to it is disturbed and causes grayscale shift, the parameters of the data driving signal on the (n+1)th data line are adjusted based on the parameters of the data driving signal of the nth data line. This allows the grayscale of the adjacent sub-pixels of the same type that are lit later to be compensated for the grayscale of the sub-pixels that are lit earlier, thus achieving the effect of visually offsetting color shift.

[0067] In some embodiments, the control module 400 is further configured to obtain the color shift detection result of the display pixel. If the color shift of the display pixel is darker, then a is less than 1; if the color shift of the display pixel is lighter, then a is greater than 1.

[0068] In some embodiments, parameter a can be set at the factory of the display device.

[0069] In some embodiments, parameter a is directly proportional to the usage time of the display device.

[0070] This application also provides an electronic device, which includes a display device as described in any of the above embodiments.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, meaning they may be located in one place. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0073] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0074] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include: Multiple display pixels, wherein the multiple display pixels are distributed in M ​​rows × N columns; M≥2, N≥2, where M and N are positive integers; A data driving module and multiple data lines are provided, wherein the data driving module provides data driving signals to N columns of display pixels via the data lines; wherein the data driving signals are configured to control the electrical parameters of the pixel electrodes of the corresponding columns of display pixels; A scan driving module and multiple scan lines are provided, wherein the scan driving module provides scan driving signals to the M rows of display pixels via the scan lines; the scan driving signals are configured to control the power-on time of the pixel electrodes of the corresponding rows of display pixels; The control module, connected to the data driving module and the scan driving module, is configured to adjust the parameters of the data driving signal according to the cabling layout architecture of the display pixels and the gate coupling effect of adjacent columns of display pixels, so that the grayscale of the display pixels in two adjacent columns matches each other.

2. The display device as claimed in claim 1, characterized in that, The control module is further configured to, when color shift occurs in the display pixels of adjacent columns, determine the adjustable column display pixels and the reference column display pixels, and adjust the parameters of the data driving signal corresponding to the adjustable column display pixels based on the parameters of the data driving signal on the data line corresponding to the reference column display pixels, wherein the parameters of the data driving signal include at least one of frame rate, high-level voltage, and duty cycle.

3. The display device as described in claim 1 or 2, characterized in that, Each column of display pixels includes two columns of sub-pixels, and each row of display pixels includes two rows of sub-pixels; The data driving module is configured to control the optical parameters of the sub-pixel according to the data driving signal; The scan driving module is configured to select the corresponding sub-pixel and write it to the data driving signal according to the scan driving signal.

4. The display device as claimed in claim 3, characterized in that, The number of data lines is N, and the number of scan lines is 4M; N data lines are connected to N columns of display pixels. Two columns of sub-pixels in the same column of display pixels are respectively set on both sides of each data line. The sub-pixels on both sides of each data line are connected to the data line. The 4M scan lines are connected to the M rows of display pixels. Each row of display pixels is connected to four scan lines. Each group of scan lines includes four scan lines. The four sub-pixels in each display pixel are respectively connected to the four scan lines in the corresponding group of scan lines.

5. The display device as claimed in claim 4, characterized in that, Each column of display pixels corresponds to one data line; The four sub-pixels within each display pixel are connected to the same data line. The control module is also configured to adjust the data driving signal on the data line corresponding to the display pixel adjacent to the preset column pixel when the preset column pixel is abnormally opened, and adjust the parameters of the data driving signal corresponding to the adjacent display pixel based on the optical parameters of the preset column pixel.

6. The display device as claimed in claim 3, characterized in that, The number of data lines is 2N, and the number of scan lines is 2M; Each of the 2N data lines is connected to one of the 2N columns of sub-pixels; the two columns of sub-pixels within each column of the display pixel are connected to the same data signal port via their corresponding data lines. Each of the 2M scan lines is connected to a corresponding sub-pixel in each of the 2M rows.

7. The display device as claimed in claim 6, characterized in that, Each row of sub-pixels corresponds to one scan line, and each column of sub-pixels corresponds to one data line; The control module is also configured to adjust the data driving signal on the data line corresponding to the display pixel adjacent to the preset column pixel when the preset column pixel is abnormally opened, and adjust the parameters of the data driving signal corresponding to the adjacent display pixel based on the optical parameters of the preset column pixel.

8. The display device as claimed in claim 1 or 2, characterized in that, Each of the display pixels includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a mixed sub-pixel, wherein the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the mixed sub-pixel are arranged sequentially in a 2×2 combination. The red sub-pixel is configured to reflect red light when lit; The green sub-pixel is configured to reflect green light when illuminated; The blue sub-pixel is configured to reflect blue light when illuminated; The hybrid sub-pixels are configured to reflect white light.

9. The display device as claimed in claim 1 or 2, characterized in that, The control module is further configured to, when the nth data line and the (n+1)th data line in the same row of display pixels are turned on and turned on in sequence, adjust the frame rate A2=A1×a of the data driving signal corresponding to the sub-pixel in the unturned column based on the parameters of the sub-pixel in the turned-on column, where 0.5≤a≤1.5, A1 is the initial frame rate of the data driving signal, n is a positive integer, and the color shift value of adjacent display pixels is related to a.

10. An electronic device, characterized in that, Includes the display device as described in any one of claims 1-9.

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