Array substrate and driving method, display device

Abstract

The application discloses an array substrate and a driving method and a display device. The array substrate is provided with a plurality of scanning lines, a plurality of data lines and a plurality of sub-pixel units arranged in an array. The plurality of sub-pixel units include red sub-pixel units, green sub-pixel units, blue sub-pixel units and white sub-pixel units. The red sub-pixel units, the green sub-pixel units and the blue sub-pixel units are electrically connected with corresponding scanning lines and data lines. The array substrate is further provided with a brightening signal trace. The white sub-pixel units are electrically connected with corresponding brightening signal traces. The brightening signal trace is used to apply white-state electric signals or black-state electric signals to the white sub-pixel units. The white-state electric signals or the black-state electric signals are applied to the white sub-pixel units through the additional brightening signal trace. Therefore, the white sub-pixel units are only turned on when high brightness is displayed, so that the color saturation is not affected under low brightness.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to an array substrate, a driving method, and a display device. Background Technology

[0002] With the development of science and technology, LCD (Liquid Crystal Display) monitors have replaced bulky CRT monitors and are increasingly integrated into people's daily lives. In particular, LCD monitors have developed rapidly in recent years due to their small size, light weight, thinness, low power consumption, and no radiation. They occupy a dominant position in the current flat panel display market and are widely used in products of various sizes, covering almost all major electronic products in today's information society, such as LCD TVs, computers, mobile phones, PDAs, GPS, automotive displays, projection displays, cameras, digital cameras, electronic watches, calculators, electronic instruments, meters, public displays, and virtual displays.

[0003] In the image display process, each liquid crystal pixel in an LCD display is driven by a thin-film transistor (TFT) integrated on a TFT thin-film transistor array substrate, along with peripheral driving circuitry, to achieve image display. However, existing LCD displays have low transmittance; increasing the brightness of the LCD display requires increasing the backlight brightness, resulting in higher power consumption. Current technologies use an RGBW (red, green, blue, white) sub-pixel architecture to improve the transmittance of LCD displays. However, due to the special design of its driving circuitry and driving method, the existing RGBW sub-pixel architecture suffers from a decrease in color saturation. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the prior art, the present invention aims to provide an array substrate and driving method, and a display device, so as to solve the problem that the RGBW sub-pixel architecture design in the prior art will lead to a decrease in color saturation of LCD displays.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] The present invention provides an array substrate, wherein the array substrate is provided with multiple scan lines, multiple data lines and multiple sub-pixel units arranged in an array, the multiple scan lines and the multiple data lines are mutually insulated and cross each other, and the multiple sub-pixel units include red sub-pixel units, green sub-pixel units, blue sub-pixel units and white sub-pixel units, and the red sub-pixel units, the green sub-pixel units and the blue sub-pixel units are electrically connected to the scan lines and the data lines respectively.

[0007] The array substrate is also provided with a brightness enhancement signal trace. Each white sub-pixel unit is electrically connected to the corresponding brightness enhancement signal trace. The brightness enhancement signal trace is used to apply a white state electrical signal to the white sub-pixel unit and make the white sub-pixel unit have maximum brightness, or the brightness enhancement signal trace is used to apply a black state electrical signal to the white sub-pixel unit and make the white sub-pixel unit turn off.

[0008] Furthermore, the white sub-pixel unit is directly electrically connected to the brightness enhancement signal trace;

[0009] The extension direction of the brightness enhancement signal trace is parallel to the extension direction of the scan line; or the extension direction of the brightness enhancement signal trace is parallel to the extension direction of the data line.

[0010] Furthermore, the extension direction of the brightness enhancement signal trace is parallel to the extension direction of the data line, and the white sub-pixel unit is electrically connected to the scan line and the brightness enhancement signal trace adjacent to the thin film transistor through a thin film transistor.

[0011] Furthermore, a scan line is provided between any two adjacent rows of the sub-pixel units, and a data line is provided between any two adjacent columns of the sub-pixel units.

[0012] Furthermore, two scan lines are provided between any two adjacent rows of the sub-pixel units, and two columns of the sub-pixel units are provided between any two adjacent data lines;

[0013] In odd-numbered rows, multiple non-white sub-pixel units between two adjacent data lines are connected to the same data line; in even-numbered rows, multiple non-white sub-pixel units between two adjacent data lines are connected to the same data line.

[0014] Furthermore, one of the brightness enhancement signal traces connects two columns / rows of the white sub-pixel units; or, one of the brightness enhancement signal traces connects one column / row of the white sub-pixel units.

[0015] Furthermore, the sub-pixel units in odd-numbered rows are formed by alternating arrangements of red and green sub-pixel units, while the sub-pixel units in even-numbered rows are formed by alternating arrangements of blue and white sub-pixel units.

[0016] This application also provides a driving method for an array substrate, the driving method being used to drive the array substrate as described above, the driving method comprising:

[0017] Detect and display image data, and analyze and process the image data;

[0018] When the total brightness of the image is greater than or equal to the preset brightness, all white sub-pixel units are turned on to the maximum brightness; when the total brightness of the image is less than the preset brightness, all white sub-pixel units are turned off.

[0019] Furthermore, the preset brightness is 99% of the maximum total brightness of all the red sub-pixel units, all the green sub-pixel units, and all the blue sub-pixel units.

[0020] This application also provides a display device, characterized in that it includes an array substrate as described above.

[0021] The beneficial effects of this invention are as follows: by additionally setting brightness enhancement signal traces on the array substrate, each white sub-pixel unit is electrically connected to its corresponding brightness enhancement signal trace. The brightness enhancement signal traces are used to apply a white state electrical signal to the white sub-pixel unit and make the white sub-pixel unit have maximum brightness, or to apply a black state electrical signal to the white sub-pixel unit and make the white sub-pixel unit turn off. Thus, the white sub-pixel unit is only turned on when displaying at high brightness, avoiding the problem of affecting color saturation at low brightness. In addition, it can also improve the transmittance when displaying at high brightness and reduce the power consumption of the backlight module. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the array substrate structure in Embodiment 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the arrangement structure of R / G / B / W sub-pixel units in Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of the transmission of control signals for the array substrate in Embodiment 1 of the present invention;

[0025] Figure 4 These are simulation data charts showing the transmittance of light at different wavelengths in this invention and in the prior art;

[0026] Figure 5 This is a schematic diagram of the array substrate structure in Embodiment 2 of the present invention;

[0027] Figure 6 This is a schematic diagram of the array substrate structure in Embodiment 3 of the present invention;

[0028] Figure 7 This is a schematic diagram of the array substrate structure in Embodiment 4 of the present invention;

[0029] Figure 8 This is a schematic diagram of the display device in this invention at maximum brightness. Detailed Implementation

[0030] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed explanation of the specific implementation methods, structures, features, and effects of the array substrate and driving method, and display device proposed according to the present invention:

[0031] [Example 1]

[0032] Figure 1 This is a schematic diagram of the array substrate in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the arrangement structure of R / G / B / W sub-pixel units in Embodiment 1 of the present invention.

[0033] like Figure 1 and Figure 2 As shown in Embodiment 1 of the present invention, an array substrate is provided. The array substrate is provided with multiple scan lines 1, multiple data lines 2, and multiple sub-pixel units arranged in an array. The multiple scan lines 1 and multiple data lines 2 are mutually insulated and cross each other. A scan line 1 is provided between any two adjacent rows of sub-pixel units, and a data line 2 is provided between any two adjacent columns of sub-pixel units. A data line 2 connects to a column of sub-pixel units, and a scan line 1 connects to a row of sub-pixel units.

[0034] Multiple sub-pixel units include a red sub-pixel unit Pr, a green sub-pixel unit Pg, a blue sub-pixel unit Pb, and a white sub-pixel unit Pw. The red sub-pixel unit Pr, green sub-pixel unit Pg, and blue sub-pixel unit Pb are electrically connected to their respective scan lines 1 and 2. The red sub-pixel unit Pr is electrically connected to the scan lines 1 and 2 of its neighboring thin-film transistor (TFT) via its corresponding TFT; the green sub-pixel unit Pg is electrically connected to the scan lines 1 and 2 of its neighboring TFT via its corresponding TFT; and the blue sub-pixel unit Pb is electrically connected to the scan lines 1 and 2 of its neighboring TFT via its corresponding TFT. The size of the white sub-pixel unit Pw can be equal to or smaller than the size of the red sub-pixel unit Pr, the green sub-pixel unit Pg, or the blue sub-pixel unit Pb.

[0035] The array substrate also includes brightness enhancement signal traces 3, with each white sub-pixel unit Pw electrically connected to its corresponding brightness enhancement signal trace 3. Brightness enhancement signal traces 3 are used to apply a white-state electrical signal to the white sub-pixel unit Pw, causing it to reach maximum brightness, or to apply a black-state electrical signal to the white sub-pixel unit Pw, causing it to turn off. In other words, the white sub-pixel unit Pw can only switch between maximum brightness and black state; it only turns on and displays maximum brightness during high-brightness display (high grayscale display).

[0036] In this embodiment, the white sub-pixel unit Pw is directly electrically connected to the brightness enhancement signal line 3, that is, the pixel electrode in the white sub-pixel unit Pw is directly electrically connected to the brightness enhancement signal line 3, without the need to set a thin film transistor.

[0037] Furthermore, the extension direction of the brightness enhancement signal trace 3 is parallel to the extension direction of the scan line 1. The brightness enhancement signal trace 3 can be located on the same layer as the scan line 1 and fabricated using the same etching process, or it can be located on different layers and fabricated using different etching processes. Of course, in other embodiments, the extension direction of the brightness enhancement signal trace 3 can also be parallel to the extension direction of the data line 2. All the brightness enhancement signal traces 3 can be electrically connected together in the non-display area at the edge, thereby jointly controlling the brightness of all white sub-pixel units Pw.

[0038] Furthermore, a brightness enhancement signal trace 3 connects to a row of white sub-pixel units Pw. Of course, in other embodiments, a brightness enhancement signal trace 3 can also connect to two rows of white sub-pixel units Pw, thereby reducing the number of brightness enhancement signal traces 3. Alternatively, when the extension direction of the brightness enhancement signal trace 3 is parallel to the extension direction of the data line 2, a brightness enhancement signal trace 3 can also connect to one or two columns of white sub-pixel units Pw.

[0039] In this embodiment, odd-numbered rows of sub-pixel units are formed by alternating red sub-pixel units Pr and green sub-pixel units Pg, while even-numbered rows of sub-pixel units are formed by alternating blue sub-pixel units Pb and white sub-pixel units Pw, thereby making the distribution of white sub-pixel units Pw more uniform and the display effect better.

[0040] Figure 3 This is a schematic diagram of the transmission of control signals for the array substrate in Embodiment 1 of the present invention. This embodiment also provides a driving method for the array substrate, which is used to drive the array substrate as described above. The driving method includes:

[0041] It detects and displays image data, and analyzes and processes the image data, for example, by using the CABC (backlight control) module to analyze and process the image data;

[0042] When the total brightness of the image is greater than or equal to the preset brightness, the white sub-pixel driving circuit applies a white state electrical signal to the white sub-pixel unit Pw through the brightness enhancement signal line 3 and turns on all white sub-pixel units Pw to maximum brightness. When the total brightness of the image is less than the preset brightness, the white sub-pixel driving circuit applies a black state electrical signal to the white sub-pixel unit Pw through the brightness enhancement signal line 3 and turns off all white sub-pixel units Pw. That is, the white sub-pixel unit Pw can only switch between maximum brightness and black state. Only during high-brightness display (high-grayscale display) is the white sub-pixel unit Pw turned on and displays maximum brightness.

[0043] Furthermore, the preset brightness is 99% of the maximum total brightness of all red sub-pixel units Pr, all green sub-pixel units Pg, and all blue sub-pixel units Pb. That is, when all red sub-pixel units Pr, all green sub-pixel units Pg, and all blue sub-pixel units Pb are turned on and the brightness is at least 99%, the display panel is white as a whole, and only the white sub-pixel unit Pw is turned on.

[0044] Table 1 below shows the white point evaluation data for the RGBW design module:

[0045]

[0046] As can be seen from Table 1, the greater the brightness of the white subpixel unit Pw, the better the white screen transmittance is improved, and the better the brightness of the display panel is improved. Therefore, the size of the white subpixel unit Pw can be set according to actual needs, that is, the aperture ratio of the white subpixel unit Pw can be set, thereby controlling the brightness of the white subpixel unit Pw.

[0047] Table 2 below shows the low blue light ratio data:

[0048]

[0049] Figure 4 This is a graph showing simulation data of transmittance for different wavelengths of light in this invention and existing technologies. The dashed lines represent existing designs, while the implementation represents this application. The vertical axis represents transmittance, and the horizontal axis represents wavelength. Figure 4 As can be seen from Tables 1 and 2, this application can improve display transmittance while maintaining low blue light eye protection requirements.

[0050] [Example 2]

[0051] Figure 5 This is a schematic diagram of the array substrate in Embodiment 2 of the present invention. Figure 5 As shown, the array substrate and driving method provided in Embodiment 2 of the present invention are the same as those in Embodiment 1. Figures 1 to 4 The array substrate and driving method are basically the same as those in the previous embodiment, except that in this embodiment:

[0052] Two scan lines 1 are provided between any two adjacent rows of sub-pixel units, and two columns of sub-pixel units are provided between any two adjacent data lines 2. That is, the array substrate adopts a dual-gate architecture in this embodiment.

[0053] In this configuration, multiple non-white sub-pixel units between two adjacent data lines 2 in odd-numbered rows are connected to the same data line 2, and multiple non-white sub-pixel units between two adjacent data lines 2 in even-numbered rows are connected to the same data line 2. Specifically, all red sub-pixel units Pr and green sub-pixel units Pg between two adjacent data lines 2 in odd-numbered rows are connected to the same data line 2, all blue sub-pixel units Pb between two adjacent data lines 2 in even-numbered rows are connected to the same data line 2, and all white sub-pixel units Pw between two adjacent data lines 2 in even-numbered rows are connected to the same brightness enhancement signal trace 3.

[0054] In this embodiment, the extension direction of the brightness enhancement signal line 3 is parallel to the extension direction of the data line 2. The white sub-pixel unit Pw is electrically connected to the scan line 1 and the brightness enhancement signal line 3 of the adjacent thin-film transistor through a thin-film transistor. One brightness enhancement signal line 3 connects two columns of white sub-pixel units Pw, thereby reducing the number of brightness enhancement signal lines 3.

[0055] In this embodiment, the scan line 1 corresponding to the upper side of a row of sub-pixel units is the first scan line 11, and the scan line 1 corresponding to the lower side is the second scan line 12. The sub-pixel units in columns 6N+1, 6N+3, and 6N+6 are connected to the first scan line 11, and the sub-pixel units in columns 6N+2, 6N+4, and 6N+5 are connected to the second scan line 12, where N is an integer greater than or equal to 0, thereby improving the display effect of the orange screen.

[0056] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0057] [Example 3]

[0058] Figure 6 This is a schematic diagram of the array substrate in Embodiment 3 of the present invention. Figure 6 As shown, the array substrate and driving method provided in Embodiment 3 of the present invention are similar to those in Embodiment 2. Figure 5 The array substrate and driving method are the same as those in the previous embodiment, except that in this embodiment:

[0059] The sub-pixel units in columns 6N+1, 6N+3, and 6N+5 are connected to the first scan line 11, and the sub-pixel units in columns 6N+2, 6N+4, and 6N+6 are connected to the second scan line 12, where N is an integer greater than or equal to 0. This allows for a smaller repetition cycle of the array substrate, making it easier to design and manufacture.

[0060] Those skilled in the art should understand that the remaining structure and working principle of this embodiment are the same as those of Embodiment 2, and will not be repeated here.

[0061] [Example 4]

[0062] Figure 7 This is a schematic diagram of the array substrate in Embodiment 4 of the present invention. Figure 7 As shown, the array substrate and driving method provided in Embodiment 4 of the present invention are similar to those in Embodiment 2. Figure 5 The array substrate and driving method are the same as those in the previous embodiment, except that in this embodiment:

[0063] A brightness enhancement signal line 3 is connected to a column of white sub-pixel units Pw, so that the control signal of each column of white sub-pixel units Pw is not disturbed.

[0064] Those skilled in the art should understand that the remaining structure and working principle of this embodiment are the same as those of Embodiment 2, and will not be repeated here.

[0065] Figure 8 This is a schematic diagram of the display device in this invention at maximum brightness. (See diagram below.) Figure 8 As shown, the present invention also provides a display device, including a display panel 30 and a backlight module 40, wherein the backlight module 40 is located below the display panel 30 and is used to provide a backlight source for the display panel 30.

[0066] The backlight module 40 can be an edge-lit backlight module or a direct-lit backlight module. Preferably, the backlight module 40 adopts a collimated backlight (CBL) mode, which can collect light and ensure display effect.

[0067] The backlight module 40 includes a backlight source 41 and a privacy layer 43, which reduces the range of light emission angles. A brightness enhancement film 42 is also provided between the backlight source 41 and the privacy layer 43, increasing the brightness of the backlight module 40. The privacy layer 43 acts like a miniature venetian blind, blocking light with a large incident angle while allowing light with a smaller incident angle to pass through, thus reducing the range of light angles passing through the privacy layer 43. The privacy layer 43 includes multiple parallel light-blocking walls and light-transmitting holes located between adjacent light-blocking walls. Light-absorbing material is provided on both sides of the light-blocking walls. Alternatively, the backlight source 41 can be a light-collecting backlight, eliminating the need for a privacy layer 43; however, light-collecting backlights are more expensive than conventional backlights.

[0068] The display panel 30 includes a color filter substrate 31 and an array substrate 32 as described above. The color filter substrate 31 and the array substrate 32 are disposed opposite to each other, and a liquid crystal layer 33 is disposed between the color filter substrate 31 and the array substrate 32. The liquid crystal layer 33 preferably uses positive liquid crystal molecules, that is, liquid crystal molecules with positive dielectric anisotropy. In the initial state, the positive liquid crystal molecules in the liquid crystal layer 33 are aligned parallel to the color filter substrate 31 and the array substrate 32, and the alignment direction of the positive liquid crystal molecules on the side closer to the color filter substrate 31 is parallel or antiparallel to the alignment direction of the positive liquid crystal molecules on the side closer to the array substrate 32. Of course, in other embodiments, the liquid crystal layer 33 may also use negative liquid crystal molecules, and the negative liquid crystal molecules in the liquid crystal layer 33 may be aligned perpendicular to the color filter substrate 31 and the array substrate 32, that is, similar to the alignment method of VA display mode.

[0069] The color filter substrate 31 has color resist layers 312 arranged in an array and black matrices 311 separating the color resist layers 312. The color resist layers 312 include red (R), green (G), and blue (B) color resist materials, and correspondingly form red (R), green (G), and blue (B) sub-pixel units. The area of ​​the color filter substrate 31 corresponding to the white sub-pixel unit Pw is transparent.

[0070] In this embodiment, a common electrode 321 is also provided on the side of the array substrate 32 facing the liquid crystal layer 33. The common electrode 321 and the pixel electrode 322 are located on different layers and are insulated from each other by an insulating layer. The pixel electrodes 322 in the red sub-pixel unit Pr, the green sub-pixel unit Pg, and the blue sub-pixel unit Pb are all electrically connected to their corresponding scan lines 1 and data lines 2. The pixel electrodes 322 in the white sub-pixel unit Pw are all electrically connected to their corresponding brightness enhancement signal lines 3.

[0071] The common electrode 321 may be located above or below the pixel electrode 322. Figure 8The diagram shows the common electrode 321 located below the pixel electrode 322. Preferably, the common electrode 321 is a planar electrode disposed across the entire surface, and the pixel electrode 322 is a block electrode disposed within each pixel unit or a slit electrode with multiple electrode strips, to form a fringe field switching (FFS) mode. Of course, in other embodiments, the pixel electrode 322 and the common electrode 321 may be located on the same layer, but they are insulated from each other. Both the pixel electrode 322 and the common electrode 321 may include multiple electrode strips, and the electrode strips of the pixel electrode 322 and the common electrode 321 are arranged alternately to form an in-plane switching (IPS) mode; or, in other embodiments, the array substrate 32 has a pixel electrode 322 on the side facing the liquid crystal layer 33, and the color filter substrate 31 has a common electrode 321 on the side facing the liquid crystal layer 33 to form a TN mode or a VA mode.

[0072] The color filter substrate 31 is provided with an upper polarizer 51, and the array substrate 32 is provided with a lower polarizer 52. The light transmission axes of the upper polarizer 51 and the lower polarizer 52 are perpendicular to each other.

[0073] The color filter substrate 31 and the array substrate 32 can be made of materials such as glass, acrylic, and polycarbonate. The common electrode 321 and the pixel electrode 322 can be made of materials such as indium tin oxide (ITO) or indium zinc oxide (IZO).

[0074] In this document, the directional terms such as up, down, left, right, front, and back are defined according to the position of the structures in the accompanying drawings and the relative positions of the structures, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second," etc., used herein are only used for distinction in name and are not used to limit the number or order.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present invention, which are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. An array substrate, characterized in that, The array substrate is provided with multiple scan lines (1), multiple data lines (2), and multiple sub-pixel units arranged in an array. The multiple scan lines (1) and multiple data lines (2) are mutually insulated and cross each other. The multiple sub-pixel units include red sub-pixel units (Pr), green sub-pixel units (Pg), blue sub-pixel units (Pb), and white sub-pixel units (Pw). The red sub-pixel units (Pr), the green sub-pixel units (Pg), and the blue sub-pixel units (Pb) are electrically connected to the scan lines (1) and the data lines (2) corresponding to them, respectively. The array substrate is also provided with a brightness enhancement signal trace (3). Each white sub-pixel unit (Pw) is directly electrically connected to the corresponding brightness enhancement signal trace (3), and there is no need to set a thin film transistor. The brightness enhancement signal trace (3) is used to apply a white state electrical signal to the white sub-pixel unit (Pw) and make the white sub-pixel unit (Pw) have the maximum brightness, or the brightness enhancement signal trace (3) is used to apply a black state electrical signal to the white sub-pixel unit (Pw) and make the white sub-pixel unit (Pw) turn off. When the total brightness of the image is greater than or equal to the preset brightness, all the white sub-pixel units (Pw) are turned on to the maximum brightness; When the total brightness of the image is less than the preset brightness, all white sub-pixel units (Pw) are turned off; The preset brightness is 99% of the maximum total brightness of all the red sub-pixel units (Pr), all the green sub-pixel units (Pg), and all the blue sub-pixel units (Pb).

2. The array substrate according to claim 1, characterized in that, The extension direction of the brightness enhancement signal trace (3) is parallel to the extension direction of the scan line (1); or the extension direction of the brightness enhancement signal trace (3) is parallel to the extension direction of the data line (2).

3. The array substrate according to claim 1, characterized in that, A scan line (1) is provided between any two adjacent rows of sub-pixel units, and a data line (2) is provided between any two adjacent columns of sub-pixel units.

4. The array substrate according to claim 1, characterized in that, Two scan lines (1) are provided between any two adjacent rows of the sub-pixel units, and two columns of the sub-pixel units are provided between any two adjacent data lines (2); In odd-numbered rows, multiple non-white sub-pixel units between two adjacent data lines (2) are connected to the same data line (2), and in even-numbered rows, multiple non-white sub-pixel units between two adjacent data lines (2) are connected to the same data line (2).

5. The array substrate according to claim 1, characterized in that, One of the brightness enhancement signal traces (3) connects two columns / rows of the white sub-pixel units (Pw); or, one of the brightness enhancement signal traces (3) connects one column / row of the white sub-pixel units (Pw).

6. The array substrate according to any one of claims 1-5, characterized in that, The sub-pixel units in odd-numbered rows are formed by alternating red sub-pixel units (Pr) and green sub-pixel units (Pg), while the sub-pixel units in even-numbered rows are formed by alternating blue sub-pixel units (Pb) and white sub-pixel units (Pw).

7. A driving method for an array substrate, characterized in that, The driving method is used to drive the array substrate as described in any one of claims 1-6, and the driving method includes: Detect and display image data, and analyze and process the image data; When the total brightness of the image is greater than or equal to the preset brightness, all white sub-pixel units (Pw) are turned on to the maximum brightness; when the total brightness of the image is less than the preset brightness, all white sub-pixel units (Pw) are turned off. The preset brightness is 99% of the maximum total brightness of all the red sub-pixel units (Pr), all the green sub-pixel units (Pg), and all the blue sub-pixel units (Pb).

8. A display device, characterized in that, Includes the array substrate as described in any one of claims 1-6.

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