CN1581279A - Device and method capable of correcting dead pixels of liquid crystal display device - Google Patents

Abstract

A liquid crystal display device comprises a display module including a plurality of first signal lines for providing a first image signal, a plurality of scanning lines for providing an address switch signal, and a plurality of display unit groups. The liquid crystal display device also comprises a memory used for storing the address of the display unit group with the dead pixel and the detection result of the display unit group, a driving module used for providing the image data of the plurality of display unit groups, and a control module connected with the memory and the driving module and used for adjusting the image data of the plurality of display unit groups transmitted by the driving module according to the address of the display unit group with the dead pixel transmitted by the memory and the detection result of the display unit group so as to output the image signal to the display module.

Description

Device and method capable of correcting dead pixels of liquid crystal display device

technical field

The invention relates to a liquid crystal display device, in particular to a device capable of correcting dead pixels of the liquid crystal display device.

Background technique

Liquid crystal display devices have been widely used in portable information products such as notebook computers (notebooks), personal digital assistants (PDAs), and household consumer electronics due to their thin and light appearance, low power consumption, and no radiation pollution. Products such as LCD TVs and other commodities.

Please refer to FIG. 1 , which is a schematic structural diagram of a known liquid crystal display device 10 . As shown in FIG. 1 , a known liquid crystal display device 10 mainly includes a liquid crystal display panel (LCD panel) 12, a gate drive circuit 14 and a source drive circuit 16 for driving the liquid crystal display panel 12, and a signal A signal processing circuit 18 is used to input signals and generate corresponding output signals. Wherein, the liquid crystal display device 10 also includes a plurality of scanning lines and a plurality of data lines (not shown in FIG. 1 ) arranged on the liquid crystal display panel 12, and the gate driving circuit 14 includes a plurality of gate driving integrated circuit chips. , such as 14A, 14B, 14C, etc., are respectively used to provide a turn-on voltage (turn-on voltage) to the corresponding scanning line. The source driving circuit 16 includes a plurality of source driving integrated circuit chips, such as 16A, 16B, 16C, etc., are respectively used to provide a gray scale (gray scale) voltage corresponding to an image signal to each data line, and the signal processing circuit 18 includes a timing controller (timing controller) 20, which is used to control the integrated gate drive The operation timing of the circuit chips 14A to 14C and the source driver IC chips 16A to 16C.

In order to understand the driving method of the known liquid crystal display device 10 more clearly, the driving method of the gate driving circuit 14 and the driving method of the source driving circuit 16 are described separately, and the detailed driving method of the source driving circuit 16 is as follows. Please refer to FIG. 1, when the time controller 20 receives a horizontal synchronizing signal (horizontal synchronizing signal, HSYNC), a vertical synchronizing signal (vertical synchronizing signal, VSYNC), and a synchronous clock signal from the outside, such as a personal computer (synchronizing clock, CLOCK), the signal processing circuit 18 will input an image data (image data) transmitted from the outside, such as digital data of 8-bit (bit) three primary colors (red, green and blue), and then the time controller 20 Will output a source initial pulse (source-driverstart pulse, SSP) to the source driver integrated circuit chip 16A according to the received signals, so that the source driver integrated circuit chip 16A starts to receive the signal output by the signal processing circuit 18 Red image data (source-driver imagedata-red, SDATA-R), green image data (SDATA-G), and blue image data (SDATA-B), store the received image data in the source driver integrated circuit chip 16A.

Still referring to FIG. 1, when the buffer memory (Buffer) inside the source driver integrated circuit chip 16A is filled with image data in sequence, the source initial pulse SSP1 is transmitted to the next source driver integrated circuit chip in series. 16B to drive the source driver integrated circuit chip 16B, and then the source driver integrated circuit chip 16B continues to capture image data until the internal buffer memory of the source driver integrated circuit chip 16B is filled, and then continue to repeat the above steps until The internal buffer memories of all the source driver IC chips 16A to 16C are full, and this operation will be repeated until the data of one horizontal line is written into the corresponding source driver IC, after which the timing controller will output a signal to For all source driver integrated circuits, the image data is transferred from the buffer memory of each driver integrated circuit chip to a plurality of internal latches (latch, not shown in Figure 1) to be latched, and then according to the latched image The data is sequentially input into a digital/analog converter (D/A converter, not shown in FIG. 1 ) inside each driver integrated circuit chip, and finally the digital image data is converted into The analog voltage signal is output to the liquid crystal display panel 12 to drive the corresponding data lines.

The driving method of the gate driving circuit 14 of the liquid crystal display device 10 is as follows. When the time controller 20 receives the horizontal synchronous signal, the vertical synchronous signal, and the synchronous clock signal from the outside, the signal processing circuit 18 will generate a control signal and send it to the time controller 20, and then the time controller 20 will These signals are received to output a gate initial pulse GSP to the gate driving integrated circuit chip 14A, so that the gate driving integrated circuit chip 14A starts to receive the control signal and latch it in the internal shift register. In the gate drive integrated circuit, each bit of the shift register corresponds to an output. When the data in the corresponding bit is 1, the output is a high voltage, and when the data is 0, the output is a low voltage, and a high voltage The switching element (TFT) in the liquid crystal panel can be turned on, and the switching element is turned off when the voltage is low, so as to select the appropriate pixel and write the correct signal. The shift register data in the gate drive IC will be shifted with the input clock. When the initial pulse moves to the last bit, the gate initial pulse GSP1 is transmitted to the next gate driving IC chip 14B in series, and the above steps are repeated to all the gate driving IC chips.

Please refer to FIG _. 2. FIG _. 2 is a schematic diagram of the structure of the liquid crystal display panel 12. As shown in FIG. The signal line connected to the sub-pixel) can provide the red image signal, the signal line connected to the green sub-pixel G (green sub-pixel) can provide the green image signal, and the signal line connected to the blue sub-pixel B (blue sub-pixel) pixel) to provide a blue image signal. The liquid crystal display panel 12 also includes a plurality of signal lines S ₁ -S _m for providing address switch signals to determine whether each sub-pixel transmits an image signal. And each sub-pixel includes a first end P1 and a second end P2, the first end P1 of the laterally different sub-pixel is connected to a different signal line to receive different image signals, and the second end P2 is connected to on the same scanning line to receive the same address switch signal; the first end P1 of the vertically different sub-pixels is connected to the same signal line to receive the same image signal, and the second end P2 is connected to a different scanning line, To receive different address switch signals.

As can be seen from the above, when the switch element (TFT) in the known liquid crystal display device 10 is damaged, the liquid crystal display panel 12 will have so-called bad spots. There is a so-called dark spot there. Since a dead point is an irreversible damage, the irreparable damage is often listed as the main reference index for the manufacturing yield of the liquid crystal display panel 12, so the occurrence of a dead point will cause the liquid crystal display device to become a defective electronic commodity , and the appearance of bad pixels will cause the quality of the user to watch the LCD screen, especially under the current trend of LCD-TV becoming popular, if the occurrence of the above-mentioned bad situation will make the use of LCD-TV be greatly restricted.

Contents of the invention

The present invention provides a device and method for correcting dead pixels of a liquid crystal display device to solve the above problems.

According to a liquid crystal display device of the present invention, it includes a display module, which includes a plurality of first signal lines for providing a first image signal, a plurality of scanning lines for providing address switch signals, and a plurality of display units Each display unit group includes a plurality of first subunits, each first subunit includes a first end and a second end, and the first ends of the plurality of first subunits of the display unit group are connected to the same The first signal line is used to receive the same first image signal, and the second ends of the plurality of first subunits of the display unit group are connected to the same scanning line to receive the same address switch signal. The liquid crystal display device also includes a memory for storing addresses of display unit groups with dead pixels and detection results of the display unit groups, a drive module for providing image data of the plurality of display unit groups, and a control module, connected to the memory and the drive module, used to adjust the address of the multiple display unit groups transmitted from the drive module according to the addresses of the display unit groups with dead pixels transmitted from the memory and the detection results of the display unit groups The image data is used to output the image signal to the display module.

A method for correcting dead pixels of a liquid crystal display device according to the present invention includes detecting the output of each display unit group on the display module of the liquid crystal display device, storing the address of the display unit group with dead pixels and the address of the display unit group detection results, providing the image data of the plurality of display unit groups, and adjusting the image data of the plurality of display unit groups according to the addresses of the display unit groups with dead pixels and the detection results of the display unit groups to output image signals to the display module.

Description of drawings

1 is a schematic structural view of a known liquid crystal display device;

2 is a schematic structural diagram of a known liquid crystal display panel;

3 is a functional block diagram of a liquid crystal display device of the present invention;

4 is a schematic structural diagram of a display module of the present invention;

Fig. 5 is the flow chart of the dead point of correction liquid crystal display device of the present invention; With

FIG. 6 is an equivalent circuit diagram in which the scanning circuit detects the voltage output of the display unit group 38A.

Description of reference symbols

10 Liquid crystal display device 12 Liquid crystal display panel

14 Gate drive circuit 16 Source drive circuit

14A, 14B, 14C gate drive integrated circuit chips

16A, 16B, 16C source drive integrated circuit chip

18 signal processing circuit 20 time controller

22 liquid crystal display device 24 display module

26 scanning circuit 28 memory

30 drive module 32 control module

34 signal line driver circuit 36 scan line driver circuit

38A, 38B, 38C, 38D display unit group

Detailed ways

Please refer to FIG. 3 . FIG. 3 is a functional block diagram of the liquid crystal display device 22 of the present invention. The liquid crystal display device 22 includes a display module 24 , the structure of the display module 24 will be described in detail later, a scanning circuit 26 , a memory 28 , a driving module 30 , and a control module 32 .

Please refer to FIG. 4 , which is a schematic structural diagram of the display module 24 of the present invention. As shown in FIG. 4 , the display module 24 includes a plurality of first signal lines D _1R ˜D _nR for providing first image signals, and different first signal lines can provide different first image signals, and here The first image signal is a red image signal, a plurality of second signal lines D _1G ˜D _nG are used to provide the second image signal, and different second signal lines can provide different second image signals, and here the first The second image signal is a green image signal, a plurality of third signal lines D _1B ~ D _nB are used to provide the third image signal, and different third signal lines can provide different third image signals, and here the third The image signal is a blue image signal, and a plurality of signal lines S ₁ -S _m are used to provide address switch signals. The display module 24 also includes a signal line driving circuit (signal line driving circuit) 34, which is electrically connected to a plurality of first, second and third signal lines for outputting image signals to the plurality of signal lines, and a The scan line driving circuit (scan line driving circuit) 36 is electrically connected to the plurality of scan lines S ₁ -S _m , and is used for outputting address switch signals to the plurality of scan lines S ₁ -S _m .

The display module 24 also includes a plurality of display unit groups 38, such as 38A, 38B, 38C, 38D etc. among Fig. 3, and the plurality of display unit groups 38 are arranged in an array, and each display unit group 38 includes a plurality A first subunit R, a plurality of second subunits G, and a plurality of third subunits B. As shown in FIG. 3 , the display unit group 38A includes four first subunits R _a1 , R _a2 , R _a3 , R _a4 , four second subunits G _a1 , _Ga2 , _Ga3 , G _a4 , and four The third subunit B _a1 , B _a2 , B _a3 , B _a4 ; the display unit group 38B includes four first subunits R _b1 , R _b2 , R _b3 , R _b4 , and four second subunits G _b1 , G _b2 , G _b3 , G _b4 , and four third sub-units B _b1 , B _b2 , B _b3 , B _b4 , and the rest of the display unit groups 38 can be deduced by analogy. Each first subunit R of the display module 24 is a red subpixel, each second subunit G is a green subpixel, and each third subunit B is a blue subpixel , and the first subunit R, the second subunit G and the third subunit B constitute the unit pixel (pixel) of the display image, so the first subunit R and the second subunit G in each display unit group 38 and the third sub-units B have the same number to form an integer number of unit pixels for displaying images, and in this embodiment, each display unit group 38 includes four first sub-units R, four second sub-units G, and four third subunits B, but the display unit group 38 of the present invention is not limited to this number of subunit combinations, and can also be other numbers of multiple subunit combinations.

In terms of the composition and structure of the display unit group 38, each first subunit R includes a first end P1 and a second end P2, and the first ends P1 of a plurality of first subunits R in the display unit group 38 are connected to The same first signal line is used to receive the same first image signal, and the second terminals P2 of the plurality of first subunits R of the display unit group 38 are connected to the same scanning line to receive the same address switch signal; each second subunit G includes The first terminal P1 and the second terminal P2, the first terminals P1 of the plurality of second subunits G of the display unit group 38 are connected to the same second signal line to receive the same second image signal, and the plurality of second subunits G of the display unit group 38 The second terminals P2 of the two subunits G are connected to the same scanning line to receive the same address switch signal; The first terminal P1 of the unit G is connected to the same third signal line to receive the same third image signal, and the second terminals P2 of the plurality of third subunits B of the display unit group 38 are connected to the same scanning line to receive the same address switch signal . As shown in FIG. 4 , the first terminals P1 of the first subunits R _a1 , R _a2 , R _a3 , and R _a4 of the display unit group 28A are all connected to the same first signal line D _1R , and the second terminals P2 of the four are all connected to the same scanning line S ₁ ; and the first terminals P1 of the second subunits G _a1 , _Ga2 , _Ga3 , _Ga4 of the display unit group 38A are all connected to the same first signal line D _1G , and the four The second terminals P2 of them are all connected to the same scanning line S ₁ ; and the first terminals P1 of the third sub-units B _b1 , B _b2 , B _b3 , B _b4 of the display unit group 38A are all connected to the same first signal line D _1B , and the second ends P2 of the four are all connected to the same scan line S ₁ . The rest of the display unit groups 38B, 38C, 38D, etc. can be deduced by analogy, and will not be described in detail here.

In terms of the connection relationship between each display unit group 38, the first end P1 of the first subunit R of the horizontally different display unit group 38 is connected to a different first signal line to receive a different first image. signal, and the second terminal P2 is connected to the same scanning line to receive the same address switch signal, and similarly, the first terminal P1 of the second subunit G of the different display unit group 38 in the horizontal direction is connected to the different second signal line to receive different second image signals, and the second terminal P2 is connected to the same scanning line to receive the same address switch signal, and the first terminal P1 of the third subunit B of the horizontally different display unit group 38 It is connected to different third signal lines to receive different third image signals, and the second terminal P2 is connected to the same scan line to receive the same address switch signal. For example, as shown in FIG. 4, the first end of the first subunit R _b1 , R _b2 , R _b3 , R b4 _{of the first subunit R a1 , R a2 , R a3 , R a4 of the display unit} group 38A and 38B is illustrated. P1 is respectively connected to different first signal lines D _1R and D _2R to receive different first image signals, and its second terminal P2 is connected to the same scanning line S ₁ to receive the same address switch signal .

In terms of the connection relationship between each vertically different display unit group 38, the first end P1 of the first subunit R of the vertically different display unit group 38 is connected to the same first signal line to receive the same The first image signal, and the second terminal P2 is connected to a different scanning line to receive different address switch signals. Similarly, the first terminal P1 of the second subunit G of the vertical different display unit group 38 is connected to the same to receive the same second image signal, and the second terminal P2 is connected to a different scan line to receive a different address switch signal, and the third subunit of the horizontally different display unit group 38 The first terminal P1 of B is connected to the same third signal line to receive the same third image signal, and the second terminal P2 is connected to a different scan line to receive different address switch signals. For example, as shown in FIG. 4 , the first subunits R _a1 , R _a2 , R _a3 , R _a4 of the display unit group 38A and the first subunits R _c1 , R _c2 , R _c3 , and R _c4 of the first subunit 38C are Terminal P1 is connected to the same first signal line D _1R to receive the same first image signal, and its second terminal P2 is respectively connected to different scanning lines S ₁ and S ₂ to receive different address switch signals .

Please refer to FIG. 5. FIG. 5 is a flow chart of correcting the dead pixels of the liquid crystal display device 22 according to the present invention. The method for correcting the dead pixels of the liquid crystal display device 22 includes the following steps:

Step 100: Use the scanning circuit 26 to detect the output of each display unit group 38 on the display module 24 of the liquid crystal display device 22;

Step 102: storing the addresses of the display unit groups 38 with dead pixels detected after step 100 and the detection results of the display unit groups 38 in the memory 28;

Step 104: the driver module 30 provides image data of a plurality of display unit groups 38; and

Step 106: the control module 32 connected to the memory 28 and the drive module 30 can adjust the address sent by the drive module 30 according to the address of the display unit group 38 with a dead pixel sent from the memory 28 and the detection result of the display unit group 38. The image data of the plurality of display unit groups 38 is output as an image signal to the display module 24 .

In step 100 , the scanning circuit 26 can detect the voltage output of each display unit group 38 , and the detected voltage of the display unit group 38 with dead pixels is different from other normal and undamaged display unit groups 38 . Please refer to FIG. 6 , which is an equivalent circuit diagram of the scanning circuit 26 detecting the voltage output of the display unit group 38A. The twelve display units R _a1 ˜R _a4 , G _a1 ˜G _a4 , and B _b1 ˜B _b4 of the display unit group 38A respectively output voltage values V _Ra1 ˜V _Ba4 . Firstly, switches S ₁ ˜S ₁₂ Turn on and switch T ₁ ~ T ₁₁ off, so that the output voltage V _Ra1 ~ V _Ba4 respectively charges the capacitors C _Ra1 ~ C _Ba4 , and after the capacitors C _Ra1 ~ C _Ba4 are fully charged, turn off the switches S ₁ ~ S ₁₂ And stop the operation of charging the capacitors C _Ra1 ~ C _Ra4 , then turn on the switches T ₁ ~ T ₁₁ and wait for the capacitors C _Ra1 ~ C _Ba4 to distribute the electricity evenly, and get an average voltage V _A , at the same time It is possible to detect the average voltages V _B , V _C . . . of other display unit groups 38B, 38C . . . When the difference between the average voltage value detected by a certain display unit group 38 and the voltage value input by the test is greater than a certain degree, then the display unit group 38 is a subunit with dead pixels. For example, when the voltage value of the test input is 6V, and the average voltage detected by a certain display unit group 38 is only 5.5V, then this display unit group 38 has a dead pixel subunit, because one of the subunits The units cannot output voltage, which reduces the average voltage value by one-twelfth. Similarly, if the detected average voltage is only 5V, then the display unit group 38 has subunits with two dead pixels. After the scanning circuit 26 detects the output of each display unit group 38 , the address of the display unit group 38 with a defective pixel and the detection result of the display unit group 38 are stored in the memory 28 . The scanning circuit 26 of the present invention may also be designed in other forms, and only one embodiment thereof is provided here.

And the control module 32 of the liquid crystal display device 22 can adjust a plurality of display unit groups 38 sent by the drive module 30 according to the addresses of the display unit groups 38 with dead pixels and the detection results of the display unit groups 38 transmitted from the memory 28. The image data is output to the display module 24 as an image signal. And its adjustment method is to increase the current input at the display unit group 38 with dead pixels detected above, to increase the brightness of the undamaged subunits in the display unit group 38 with dead pixels, and make up for the failure of the damaged subunits to provide brightness. regret. For example, in the example mentioned above, when the average voltage value of the display unit group 38 with dead pixels is reduced by one-twelfth during the test, it means that one of the subunits cannot output voltage, that is, it cannot Light on, so the control module 32 can strengthen the image signal strength of the address display unit group 38 transmitted from the drive module 30 by one-twelfth of the time according to the data transmitted from the memory 28, that is, the display unit at the address The group 38 outputs one-twelfth times more current to the display module 24 to achieve the effect of compensating the brightness of dead pixels.

And the liquid crystal display device 22 also can be designed to use scanning circuit 26 to test each display unit group 38 on the display module 24 before manufacturing leaves the factory, and will test the display unit group 38 data of gained, especially will detect to have dead pixel The address of the display unit group 38 and the detection result of the display unit group 38 are stored in the memory 28, and the scanning circuit 26 can be removed from the liquid crystal display device 22 when the product leaves the factory, and the memory 28 directly provides the control module 32 By adjusting the data of the related display unit group 38 , the general user end does not need to perform scanning test, but can directly use the liquid crystal display device 22 calibrated by the control module 32 .

Compared with the known liquid crystal display device, the liquid crystal display device 22 of the present invention provides a display module 24 with an improved display unit structure, and then cooperates with a scanning circuit 26, a memory 28, a driving module 30, and a control module 32 to obtain Go out the address of the display unit group 38 with dead point and the detection result of this display unit group 38, and store this data in the memory 28, to provide the control module 32 to adjust a plurality of display unit groups 38 sent by the drive module 30 The image data is output to the display module 24 as an image signal. In this way, scanning technology can be used to find the damaged display unit group 38, and then the brightness of the display unit group 38 can be reinforced, so as to make up for the shortcoming of the brightness attenuation at the dark spot of the screen, so that it is difficult for human eyes to see this place. In order to avoid affecting the quality of viewing the LCD screen due to the obvious existence of dark spots.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the patent of the present invention.

Claims (16)

1. A liquid crystal display device comprising: A display module, which includes: A plurality of first signal lines for providing a first image signal; A plurality of scanning lines are used to provide address switch signals; and A plurality of display unit groups, each display unit group includes a plurality of first subunits, each first subunit includes a first end and a second end, the first of the plurality of first subunits of the display unit group The ends are connected to the same first signal line to receive the same first image signal, and the second ends of the plurality of first subunits of the display unit group are connected to the same scanning line to receive the same address switch signal; A memory, used to store the address of the display unit group with dead pixels and the detection result of the display unit group; a driver module, used to provide the image data of the plurality of display unit groups; and A control module, connected to the memory and the drive module, used to adjust the plurality of display units transmitted from the drive module according to the addresses of the display unit groups with dead pixels transmitted from the memory and the detection results of the display unit groups The set of image data is used to output the image signal to the display module. 2. The liquid crystal display device as claimed in claim 1, further comprising a scanning circuit for detecting the output of each display unit group. 3. The liquid crystal display device as claimed in claim 1, wherein the plurality of display unit groups of the display module are arranged in an array. 4. The liquid crystal display device according to claim 3, wherein the first ends of the first subunits of different display unit groups in the horizontal direction are connected to different first signal lines, and the second ends are connected to the same scan line. 5. The liquid crystal display device as claimed in claim 3, wherein the first ends of the first subunits of the vertically different display unit groups are connected to the same first signal line, and the second ends are connected to different scan line. 6. The liquid crystal display device as claimed in claim 1, wherein each first sub-unit of the display unit group is a red sub-pixel. 7. The liquid crystal display device as claimed in claim 1, wherein each first sub-unit of the display unit group is a green sub-pixel. 8. The liquid crystal display device as claimed in claim 1, wherein each first sub-unit of the display unit group is a blue sub-pixel. 9. The liquid crystal display device as claimed in claim 1, wherein the display module further comprises: a plurality of second signal lines for providing second image signals; and a plurality of third signal lines for providing a third image signal; Wherein each display unit group in the plurality of display unit groups also includes: A plurality of second subunits, each second subunit includes a first end and a second end, the first ends of the plurality of second subunits of the display unit group are connected to the same second signal line to receive the same first Two image signals, the second ends of the plurality of second subunits of the display unit group are connected to the same scanning line to receive the same address switch signal; and A plurality of third subunits, each third subunit includes a first end and a second end, the first ends of the plurality of third subunits of the display unit group are connected to the same third signal line to receive the same third For three image signals, the second ends of multiple third subunits of the display unit group are connected to the same scanning line to receive the same address switch signal. 10. The liquid crystal display device as claimed in claim 9, wherein the second ends of the plurality of first, second and third subunits of the same display unit group of the display module are connected to the same scanning line to receive the same address switch signal . 11. A method for correcting dead pixels of a liquid crystal display device, comprising: Detecting the output of each display unit group on the display module of the liquid crystal display device; storing the address of the display unit group with dead pixels and the detection result of the display unit group; providing image data of the plurality of display unit groups; and The image data of the plurality of display unit groups are adjusted according to the address of the display unit group with dead pixels and the detection result of the display unit group to output image signals to the display module. 12. The method according to claim 11, wherein each display unit group comprises a plurality of first subunits, each first subunit comprises a first terminal and a second terminal, and the plurality of first subunits of the display unit group The first end of a subunit is connected to the same first signal line to receive the same first image signal, and the second ends of multiple first subunits of the display unit group are connected to the same scanning line to receive the same address switch signal. 13. The method of claim 12, wherein each display unit group in the plurality of display unit groups further comprises: A plurality of second subunits, each second subunit includes a first end and a second end, the first ends of the plurality of second subunits of the display unit group are connected to the same second signal line to receive the same first Two image signals, the second ends of the plurality of second subunits of the display unit group are connected to the same scanning line to receive the same address switch signal; and A plurality of third subunits, each third subunit includes a first end and a second end, the first ends of the plurality of third subunits of the display unit group are connected to the same third signal line to receive the same third Three image signals, the second ends of multiple third sub-units of the display unit group are connected to the same scanning line to receive the same address switch signal; Wherein the second ends of the plurality of first, second and third sub-units of the same display unit group of the display module are connected to the same scanning line to receive the same address switch signal. 14. The method of claim 11, wherein the plurality of display unit groups of the display module are arranged in an array. 15. The method according to claim 14, wherein the first ends of the first subunits of the different display unit groups in the horizontal direction are connected to different first signal lines, and the second ends are connected to the same scanning line . 16. The method according to claim 14 , wherein the first ends of the first subunits of the vertically different display unit groups are connected to the same first signal line, and the second ends are connected to different scanning lines .

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