CN101640020B - Display module and driving method thereof - Google Patents

Abstract

A display module comprises a scanning line, a data line, a driving circuit and a level conversion circuit. The driving circuit is provided with at least one first driving unit and at least one second driving unit electrically connected with the first driving unit, wherein a non-direct current signal is transmitted between the first driving unit and the second driving unit so as to control the first driving unit and/or the second driving unit to act. The first driving unit outputs a first driving signal to the scanning line, and the second driving unit outputs a second driving signal to the level conversion circuit. The level conversion circuit is electrically connected with the driving circuit and the data line and outputs a display signal to the data line according to a second driving signal. A driving method of the display module is also disclosed.

Description

Display module and driving method thereof

technical field

The invention relates to a display module and a driving method thereof.

Background technique

Display devices have developed from the earliest cathode ray tube (cathode ray tube, CRT) display device to today's liquid crystal display (Liquid Crystal Display, LCD) device, organic light emitting diode (organic light emitting diode, OLED) display device and electronic paper (E-paper) -paper) display device, its size and weight are greatly reduced, and it is widely used in communication, information and consumer electronics products.

Please refer to FIG. 1 , the conventional display device 1 takes a liquid crystal display device as an example, which includes a liquid crystal display module, and the liquid crystal display module has a liquid crystal display panel 11 , a data driving circuit 12 and a scanning driving circuit 13 . The data driving circuit J2 is electrically connected to the liquid crystal display panel 11 through a plurality of data lines D ₁₁ -D _1n , and the scanning driving circuit 13 is electrically connected to the liquid crystal display panel 11 through a plurality of scanning lines S ₁₁ -S _1m .

Referring to FIG. 2 , the data driving circuit 12 includes a shift register unit 122 , a first-stage latch unit 123 , a second-stage latch unit 124 and a level shift unit 125 . The shift register unit 122 is electrically connected to the first-stage latch unit 123 , and the second-stage latch unit 124 is electrically connected to the first-stage latch unit 123 and the level shift unit 125 respectively.

Please also refer to FIG. 3 , the shift register unit 122 generates shift register signals S _R1 -S _RN according to a start pulse signal S ₀₁ and a clock pulse signal CK, and transmits them to the first-stage latch Lock unit 123.

The first stage latch unit 123 receives an image signal S ₀₂ according to the shift register signals S _R1 ˜S _RN , wherein the image signal S ₀₂ includes a plurality of image data and is stored in the first stage latch unit 123 . The second-stage latch unit 124 captures the image signal S ₀₂ into the second-stage latch unit 124 according to a latch enable signal S ₀₃ . The level shift unit 125 converts the image signal _S02 stored in the second-level latch unit 124 into a plurality of display signals, and transmits the display signals to the liquid crystal display panel 11 through the corresponding data lines _D11 - _D1m A display screen is displayed.

However, nowadays display devices are designed to be light, thin, short, and small. If the data driving circuit 12 and the scanning driving circuit 13 in the display module can be integrated under the structure of the existing display device to reduce the number of components, it will be possible to use The display device is more space-saving or thinner, thereby saving production costs. Therefore, how to provide a display module capable of reducing the number of driving elements and its driving method is one of the important issues nowadays.

Contents of the invention

In view of the above problems, an object of the present invention is to provide a display module capable of reducing the number of driving components and a driving method thereof.

To achieve the above purpose, the present invention provides a display module, which includes a scan line, a data line, a driving circuit and a level conversion circuit. The drive circuit has at least one first drive unit and at least one second drive unit electrically connected thereto, wherein a non-DC signal is transmitted between the first drive unit and the second drive unit to control the first drive unit and/or the second drive unit The second drive unit operates. The first driving unit outputs a first driving signal to the scanning line, and the second driving unit outputs a second driving signal to the level conversion circuit. The level conversion circuit is electrically connected with the driving circuit and the data line, and outputs a display signal to the data line according to the second driving signal.

To achieve the above object, the present invention provides a method for driving a display module, wherein the display module has a scanning line, a data line, a driving circuit and a level conversion circuit, and the driving circuit has at least one first driving unit and at least one a second drive unit. The driving method of the display module includes the following steps: transmitting a non-DC signal between the first driving unit and the second driving unit; outputting a first driving signal to the scanning line by the first driving unit; outputting a first driving signal by the second driving unit Two driving signals, wherein the non-direct current signal controls the action of the first driving unit and the second driving unit; and the level conversion circuit outputs a display signal to the data line according to the second driving signal.

To achieve the above purpose, the present invention provides a display module, which includes a scan line, a data line, a driving circuit and a level conversion circuit. The drive circuit has at least one first drive unit and at least one second drive unit electrically connected thereto, wherein a non-DC signal is transmitted between the first drive unit and the second drive unit to control the first drive unit and/or The second drive unit operates. The first driving unit outputs a first driving signal to the level conversion circuit, and the second driving unit outputs a second driving signal to the data line. The level conversion circuit is electrically connected with the driving circuit and the scanning line, and outputs a scanning signal to the scanning line according to the first driving signal.

To achieve the above object, the present invention provides a method for driving a display module, wherein the display module has a scanning line, a data line, a driving circuit and a level conversion circuit, and the driving circuit has at least one first driving unit and at least one A second driving unit, the driving method includes the following steps: transmitting a non-DC signal between the first driving unit and the second driving unit; outputting a first driving signal by the first driving unit; outputting a first driving signal by the second driving unit Two driving signals are sent to the data line, wherein the non-DC signal controls the action of the first driving unit and the second driving unit; and the level conversion circuit outputs a scanning signal to the scanning line according to the first driving signal.

To achieve the above purpose, the present invention provides a display module, which includes a scan line, a data line, a driving circuit and a level conversion circuit. The drive circuit has at least one first drive unit and at least one second drive unit electrically connected thereto, wherein a non-DC signal is transmitted between the first drive unit and the second drive unit to control the first drive unit and/or the second drive unit The second drive unit operates. The first driving unit outputs a first driving signal, and the second driving unit outputs a second driving signal. The level shifting circuit has a level shifting unit and a bypass unit connected in parallel with it, the level shifting circuit is electrically connected with the driving circuit, the scanning line and the data line, and selects the first driving signal to pass through the level shifting unit according to a selection signal or the bypass unit, and output a scan signal to the scan line, or output a display signal to the data line, or select the second drive signal to pass through the level conversion unit or the bypass unit according to the selection signal, and output the scan signal to the scan line, Or output the display signal to the data line.

To achieve the above object, the present invention provides a method for driving a display module, wherein the display module has a scanning line, a data line, a driving circuit and a level conversion circuit, and the driving circuit has at least one first driving unit and at least one A second driving unit, the level shifting circuit has a level shifting unit and a bypass unit connected in parallel with it, and the driving method includes the following steps: transmitting a non-DC signal between the first driving unit and the second driving unit; A drive unit outputs a first drive signal; a second drive unit outputs a second drive signal, wherein the non-DC signal controls the action of the first drive unit and the second drive unit; the level conversion circuit converts the first drive unit according to a selection signal The driving signal is selected to pass through the level conversion unit or the bypass unit to output a scanning signal to the scanning line, or to output the display signal to the data line; and the second driving signal is selected to pass through the level conversion unit by the level conversion circuit according to the selection signal Or bypass the unit, and output the scan signal to the scan line, or output the display signal to the data line.

As mentioned above, according to the display module and the driving method thereof of the present invention, the display module having the driving circuit and the level shifting circuit is used to process the scanning signal and the display signal to generate a display image. Compared with the conventional technology, the display device of the present invention not only integrates the traditional scanning driving circuit and data driving circuit, but also uses a display module with a relatively simple structure to process scanning signals and display signals at the same time. Therefore, the display module and its driving method of the present invention can reduce the number of driving elements to save space, and further save production cost.

Description of drawings

FIG. 1 is a schematic diagram of a conventional display device;

2 is a schematic diagram of a conventional data drive circuit;

3 is a timing control diagram of a data drive circuit of a conventional display device;

4 is a schematic diagram of a display device according to a first embodiment;

5 is a schematic diagram of a pixel unit according to the first embodiment;

6 is a schematic diagram of a driving circuit according to a first embodiment;

7 is a timing control diagram of the driving circuit of the display device according to the first embodiment;

8 to 9 are implementations of the level conversion circuit of the display device according to the first embodiment;

FIG. 10 is a flow chart of the steps of the control method according to the first embodiment of the present invention;

11 is a schematic diagram of a display device according to a second embodiment;

FIG. 12 is a flow chart of the steps of the control method according to the second embodiment of the present invention;

13 is a schematic diagram of a display device according to a third embodiment;

14 is a schematic diagram of a level conversion circuit of a display device according to a third embodiment;

FIG. 15 and FIG. 16 are schematic diagrams showing the arrangement of scanning lines and data lines of the driving circuit according to the third embodiment; and

FIG. 17 is a flow chart of the steps of the control method according to the third embodiment of the present invention.

Description of component symbols:

1 display device

11 LCD module

12 Data drive circuit

122 shift register unit

123 First level latch unit

124 Second level latch unit

125 Level Offset Unit

13 Scan driving circuit

CK clock pulse signal

D ₁₁ ~ D _1n data line

S ₀₁ start pulse signal

S ₀₂ video signal

S ₀₃ Latch enable signal

S ₁₁ ～S _1m scanning line

S _R1 ~ S _RN shift register signal

2, 3, 4 Display Module

211, 311, 411 The first drive unit

212, 312, 412 Second drive unit

213 Shift register unit

214 Level Shift Unit

22, 32, 42 Level conversion circuit

23, 33, 43 Display panel

23 ₁₁ ～23 _mn , 33 ₁₁ ～33 _mn , 43 ₁₁ ～43 _mn pixel units

421 Level conversion unit

422 bypass unit

A ₁₁ ～A _1m first driving signal

A ₂₁ ~A _2n second driving signal

A ₃₁ ~ A _3n display signal

A ₄₁ input signal

A ₆₁ ～A _6m , A ₇₁ ～A _7m scanning signal

A ₈₁ ～A _8n , A ₉₁ display signal

B ₁₁ ～B _1m drive data

B ₂₁ ~ B _2n image data

C _LC pixel capacitance

D ₂₁ ~ D _2n data line

OE ₁ , OE ₂ , OE ₃ , OE ₄ output enable signal

IM Signal Transmission Line

R ₁ ~R _i registers

S ₂₁ ～S _2m scanning line

S11～S14, S21～S24, S31～S35 steps

t ₀₁ , t ₀₂ , t ₀₃ , t ₀₄ time

V _com common voltage

T ₁ , T ₂ , T ₃ , T ₄ transistors

Detailed ways

A display module and a driving method thereof according to various embodiments of the present invention will be described below with reference to related drawings.

The display module of the present invention can be a non-volatile display module. The so-called non-volatile display module means that the display module has at least two stable states, which can be maintained at least tens of milliseconds after the power source is removed. In addition, the optical modulating substance in the display module may include an electrophoretic fluid, an electrowetting substance, a cholesterol liquid crystal or a nematic liquid crystal.

first embodiment

Please refer to FIG. 4 , the display module 2 of the first embodiment of the present invention includes a scan line, a data line, a driving circuit 21 and a level conversion circuit 22 . In this embodiment, the display module 2 is illustrated by taking a plurality of scan lines S ₂₁ -S _2m and a plurality of data lines D ₂₁ -D _2n as an example. The driving circuit 21 is electrically connected to the scanning lines S ₂₁ -S _2m and the level conversion circuit 22 respectively, and the level conversion circuit 22 is electrically connected to the data lines D ₂₁ -D _2n . Wherein, m and n are positive integers greater than 1.

The driving circuit 21 has at least one first driving unit and at least one second driving unit. In this embodiment, the driving circuit 21 is illustrated by taking a plurality of first driving units 211 and a plurality of second driving units 212 as an example. The first driving unit 211 is electrically connected to the second driving unit 212 , wherein each of the first driving units 211 and each of the second driving units 212 may have the same or different circuit structures, which is not limited.

When the display module 2 is driven, the first driving unit 211 outputs the first driving signals A ₁₁ -A _1m to the corresponding scanning lines S ₂₁ -S _2m , and the second driving unit 221 outputs the second driving signals A ₂₁ -A _2n to the level conversion circuit 22. The level conversion circuit 22 also receives an output enable signal OE ₁ , and outputs display signals A ₃₁ ˜A _3n to the data lines D ₂₁ ˜D _2n according to the second driving signals A ₂₁ ˜A _2n and the output enable signal OE ₁ . In this embodiment, the level conversion circuit 22 can be a sample-and-hold circuit or a level shift circuit.

As shown in FIG. 4 , the display module 2 further includes a display panel 23 having at least one pixel unit arranged in a one-dimensional matrix or a two-dimensional matrix. In the first embodiment, the display panel 23 is illustrated by taking pixel units 23 ₁₁ -23 _mn as an example, and the arrangement thereof is in a two-dimensional matrix form. On the display panel 23 , the scan lines S ₂₁ -S _2m and the data lines D ₂₁ -D _2n are arranged in a staggered manner, forming a plurality of staggered regions, and each pixel unit 23 ₁₁ ˜ 23 _mn is disposed in a corresponding staggered region. To simplify the description, the equivalent circuit structure of the pixel unit ₂₃₁₁ will be described below as an example.

Please refer to FIG. 5 , the pixel unit 23 ₁₁ includes a transistor T ₁ and a pixel capacitor C _LC . The transistor T ₁ is electrically connected to the scan line S ₂₁ and the data line D ₂₁ respectively, one end of the pixel capacitor C _LC is electrically connected to the transistor T ₁ , and the other end is electrically connected to the common voltage V _com .

Please refer to FIG. 6, the first drive unit 211 and the second drive unit 212 each contain at least one register, and the registers R ₁ -R _i shown in FIG. 6 can form a shift register unit 213 to achieve storage drive purpose of the signal and image signal. In addition to the shift register unit 213 , the driving circuit 21 further includes a level shift unit 214 , and the level shift unit 214 is electrically connected to the shift register unit 213 and the level conversion circuit 22 respectively. Wherein, a non-DC signal is transmitted between the first driving unit 211 and the second driving unit 212 , which can be a driving signal and/or an image signal. The non-DC signal is transmitted to the second driving unit 212 through the first driving unit 211 , or is transmitted to the first driving unit 211 through the second driving unit 212 , which is not limited in this embodiment.

The shift register unit 213 receives at least one input signal. In this embodiment, the shift register unit 213 is electrically connected to the signal transmission line IM. Wherein, the signal transmission line IM receives an input signal A ₄₁ . However, the user can sequentially input the driving signal and input the image signal to the shift register unit 213 according to the connection relationship of the panel, and the transmission and reception methods of the signals are not limited here. In addition, the input signal A ₄₁ can be generated by an external circuit or inside the display module 2 (such as the driving circuit 21 ), and the method of generating the signal is not limited here.

Please refer to FIG. 7 , the input signal A ₄₁ includes a plurality of driving data B ₁₁ -B _1m and a plurality of image data B ₂₁ -B _2n .

During time t ₀₁ ˜t ₀₂ , the shift register unit 213 receives a clock pulse signal CK and receives the input signal A ₄₁ according to the clock pulse signal CK. The operation of the shift register unit 213 will be described in detail below.

The shift register unit 213 starts to receive the input signal A ₄₁ at time t ₀₁ in conjunction with the clock signal CK. After the shift register unit 213 receives the input signal _A41 , it stores the driving data _B11 in the register _R1 , and stores the driving data _B12 in the register _R2 , and so on. Following the clock pulse signal CK, the driving data B ₁₁ ˜B _1m and the image data B ₂₁ ˜B _2n are stored in the registers R ₁ ˜R _i . At this time, the level shift unit 214 can be turned off by an output enable signal _OE2 . At this time, the driving data B ₁₁ -B _1m and the image data B ₂₁ -B _2n are not output to the scan lines S ₂₁ -S _2m and the data lines D ₂₁ -D _2n .

Please refer to FIG. 7 , during time t ₀₂ to t ₀₄ , the clock pulse signal CK is at a fixed level, such as a low voltage level. Of course, in different embodiments, the clock pulse signal CK can also be a high voltage level. The voltage level may be in a floating state, so that the shift register unit 213 stops the shift operation in the registers R ₁ -R _i . At this time, the shift register unit 213 generates the output driving signal and the output image signal to the level shift unit 214 , and adjusts a voltage level of the output drive signal and the output image signal through the level shift unit 214 . Here, the output drive signal includes drive data B ₁₁ -B _1m , and the output image signal includes image data B ₂₁ -B _2n .

The level shift unit 214 converts the output driving signal into the first driving signal A ₁₁ ˜A _1m according to the output enable signal OE ₂ , and then outputs it to the corresponding scanning lines S ₂₁ ˜S _2m , and After the output image signal is transformed into the second driving signals A ₂₁ -A _2n , they are output to the level conversion circuit 22 . The level conversion circuit 22 converts the second drive signals A ₂₁ -A _2n into display signals A ₃₁ -A _3n according to the output enable signal OE ₁ , and then outputs them to the corresponding data lines D ₂₁ -D _2n . Wherein, the levels of the display signals A ₃₁ -A _3n have different levels according to the images to be displayed, and are not limited in the figure.

Please refer to FIG. 8 , the level conversion circuit 22 can be a sample and hold circuit, which includes a plurality of transistors. To simplify the description, a transistor _T2 will be taken as an example below. In this embodiment, the second driving signal _A21 controls the transistor _T2 to be in an on state or an off state. When the electrical substrate _T2 is in the conduction state, a display signal _A91 can be transmitted to the data line _D21 through the transistor _T2 . Wherein, the display signal A ₉₁ can be a single-level signal or a multi-level signal.

As shown in FIG. 9 , the level conversion circuit 22 can be an inverting circuit, which includes an inverting unit. To simplify the description, a reverse unit will be taken as an example below. The reverse unit includes a transistor T ₃ and a transistor T ₄ . In this embodiment, the voltage level of the second driving signal A ₂₁ is converted to a voltage level V ⁺ or a voltage level V ⁻ through an inverting circuit, and output to the data line D ₂₁ .

In addition, in actual operation, at least a part of the driving circuit 21 and the level shifting circuit 22 are arranged in an integrated circuit (IC) chip by a single crystal semiconductor process technology, or by a polycrystalline process or an amorphous process It is disposed on the same substrate as the pixel units 23 ₁₁ -23 _mn . Here, the amorphous process can be an amorphous silicon thin film transistor process or an organic thin film transistor process. It can also be a mixed form, for example, the driving circuit 21 is arranged in an integrated circuit chip with a single crystal semiconductor process technology, and the level conversion circuit 22 is arranged with the pixel units 23 ₁₁ ~ 23 _mn in a polycrystalline process or an amorphous process. same substrate.

Please refer to FIG. 10 , the driving method of the display module according to the first embodiment of the present invention can be applied to the display module 2 shown in FIG. 4 . The control method of the present invention includes step S11 to step S14.

Step S11 , transmitting a non-DC signal between the first driving unit and the second driving unit. Step S12 , outputting a first driving signal to the scanning line by the first driving unit. Step S13, outputting a second driving signal from the second driving unit, wherein the non-DC signal controls the operation of the first driving unit and the second driving unit. Step S14 , outputting a display signal to the data line by the level conversion circuit according to the second driving signal.

The detailed drive control method has been described in the above embodiments, so it will not be repeated here. It is worth mentioning that the above steps are not limited to this order, and the steps can be exchanged according to the needs of the process.

second embodiment

Please refer to FIG. 11 , the display module 3 of the second embodiment of the present invention includes a scan line, a data line, a driving circuit 31 and a level conversion circuit 32 . In this embodiment, the display module 3 is illustrated by taking a plurality of scan lines S ₂₁ -S _2m and a plurality of data lines D ₂₁ -D _2n as an example. The driving circuit 31 is electrically connected to the data lines D ₂₁ -D ₂ and the level shifting circuit 32 respectively, and the level shifting circuit 22 is electrically connected to the scanning lines S ₂₁ -S _2m .

The driving circuit 31 has at least one first driving unit and at least one second driving unit. In this embodiment, the driving circuit 31 is illustrated by taking a plurality of first driving units 311 and a plurality of second driving units 312 as an example. The first driving unit 311 is electrically connected to the second driving unit 312 , wherein each of the first driving units 311 and each of the second driving units 312 may have the same or different circuit structures, which is not limited.

As shown in FIG. 11 , the display module 3 further includes a display panel 33 . In the second embodiment, the display panel 33 includes pixel units 33 ₁₁ -33 _mn as an example for illustration. In addition, the driving circuit 31, the level shifting circuit 32, the first driving unit 311, the second driving unit 312, the display panel 33, and the pixel units _3311-33mn are the driving circuit ₂₁ and the level shifting circuit as shown in FIG. The circuit 22 , the first drive unit 211 , the second drive unit 212 , and 23 ₁₁ -23 _mn , their functions, circuits and action methods are as described above, and will not be repeated here.

In addition, in actual operation, at least a part of the driving circuit 31 and the level shifting circuit 32 are arranged in an integrated circuit chip using a single crystal semiconductor process technology, or are connected with the pixel units 33 _{11 to 33} in a polycrystalline process or an amorphous process. 33 _mn are disposed on a same substrate. Here, the amorphous process can be an amorphous silicon thin film transistor process or an organic thin film transistor process. It can also be a hybrid form, for example, the driving circuit 31 is arranged in an integrated circuit chip with a single-crystal semiconductor process technology, and the level conversion circuit 32 is arranged with the pixel units 33 ₁₁ ~ 33 _mn in a polycrystalline process or an amorphous process. same substrate.

When the display module 3 is driven, the first driving unit 311 outputs the first driving signals _A11 - _A1m to the level conversion circuit 22, and the second driving unit 312 outputs the second driving signals _A21 - _A2n to the corresponding data Lines D ₂₁ -D _2n . The level conversion circuit 32 also receives an output enable signal OE ₃ , and outputs scan signals A ₆₁ ˜A _6m to the scan lines S ₂₁ ˜S _2n according to the first driving signals A ₁₁ ˜A _1m and the output enable signal OE ₃ .

Please refer to FIG. 12 , the driving method of the display module according to the second embodiment of the present invention is applied to the display device 3 shown in FIG. 11 . The control method of the present invention includes steps S21 to S24.

Step S21 , transmitting a non-DC signal between the first driving unit and the second driving unit. Step S22, outputting a first driving signal by the first driving unit. Step S23 , the second driving unit outputs a second driving signal to the data line, wherein the non-DC signal controls the operation of the first driving unit and the second driving unit. Step S24 , outputting a scanning signal to the scanning line by the level conversion circuit according to the first driving signal.

The detailed control method has been described in detail in the above embodiment, so it will not be repeated here. It is worth mentioning that the above steps are not limited to this order, and the steps can be exchanged according to the needs of the process.

third embodiment

Please refer to FIG. 13 , the display module 4 of the third embodiment of the present invention includes a scan line, a data line, a driving circuit 41 and a level conversion circuit 42 . In this embodiment, the display module 4 is illustrated by taking a plurality of scan lines S ₂₁ -S _2m and a plurality of data lines D ₂₁ -D _2n as an example. The driving circuit 41 is electrically connected to the level shifting circuit 42, and the level shifting circuit 42 is electrically connected to the data lines D ₂₁ -D _2n and the scanning lines S ₂₁ -S _2m respectively.

The driving circuit 41 has at least one first driving unit and at least one second driving unit. In this embodiment, the driving circuit 41 is illustrated by taking a plurality of first driving units 411 and a plurality of second driving units 412 as an example. The first driving unit 411 is electrically connected to the second driving unit 412 , wherein each of the first driving units 411 and each of the second driving units 412 may have the same or different circuit structures, and there is no limitation on this.

As shown in FIG. 13 , the display module 4 further includes a display panel 43 . In the third embodiment, the display panel 43 includes pixel units 43 ₁₁ -43 _mn as an example for illustration. In addition, the driving circuit 41, the level shifting circuit 42, the first driving unit 411, the second driving unit 412, the display panel 43, and the display units _4311-43mn are the driving circuit ₂₁ and the level shifting circuit as shown in FIG. The circuit 22 , the first drive unit 211 , the second drive unit 212 , and 23 ₁₁ -23 _mn , their functions, circuits and action methods are as described above, and will not be repeated here.

In addition, in actual operation, at least a part of the driving circuit 41 and the level shifting circuit 42 are arranged in an integrated circuit chip using a single crystal semiconductor process technology, or are connected with the pixel units 43 _{11 to 43} using a polycrystalline process or an amorphous process. 43 _mn are disposed on a same substrate. Here, the amorphous process can be an amorphous silicon thin film transistor process or an organic thin film transistor process. It can also be a mixed form. For example, the driving circuit 41 is arranged in an integrated circuit chip with a single crystal semiconductor process technology, and the level conversion circuit 42 is arranged with the pixel units 43 ₁₁ ~ 43 _mn in a polycrystalline process or an amorphous process. same substrate.

When the display module 4 is driven, the first driving unit 411 outputs the first driving signals _A11 - _A1m to the level conversion circuit 42, and the second driving unit 412 outputs the second driving signals _A21 - _A2n to the level conversion circuit 42. The level conversion circuit 42 also receives an output enable signal OE ₄ , and outputs scan signals A ₇₁ ˜A _7m to scan lines S ₂₁ ˜S _2m according to the output enable signal OE ₄ , and outputs display signals A ₈₁ ˜A _8n to data Line D ₂₁ -D _2m .

Please refer to FIG. 14 , the level shifting circuit 42 further includes a plurality of level conversion units and a plurality of bypass units. Each level conversion unit is electrically connected to a plurality of corresponding bypass units, one end of which is electrically connected to the first driving unit 411 or the second driving unit 412, and the other end is connected to the scanning lines _S21 - _S2m or the data line _D21 ~ D _2n electrical connection. To simplify the description, one level conversion unit 421 and one bypass unit 422 will be taken as an example below.

The level conversion circuit 42 selects the first driving signals A ₁₁ -A _1m through the level conversion unit 421 or the bypass unit 422 according to a selection signal S ₃₁ , and outputs the scanning signals A ₇₁ -A _7m to the scanning lines S ₂₁ -S _2m , or output the display signals A ₈₁ ˜A _8n to the data lines D ₂₁ ˜D _2n , or select the second driving signals A ₂₁ ˜A _2m to pass through the level conversion unit 421 or the bypass unit 422 according to the selection signal, and output the scanning The signals A ₇₁ ˜A _7m are sent to the scanning lines S ₂₁ ˜S _2m , or the display signals A ₈₁ ˜A _8n are output to the data lines D ₂₁ ˜D _2n . In this embodiment, the level shifting circuit 42 makes the first driving signals A ₁₁ -A _1m pass through the bypass unit 422 and the second driving unit 412 passes through the level shifting unit 421 according to the selection signal S ₃₁ .

In addition, in the third embodiment, the arrangement of the scanning lines S ₂₁ -S _2n and the data lines D ₂₁ -D _2m connecting the driving circuit 22 and the display module 21 is not limited. Those skilled in the art should be able to arrange the scan lines S ₂₁ -S _2n and the data lines D ₂₁ -D _2m in a staggered manner as shown in FIG. 15 and FIG. 16 , or arrange them in other forms, without limitation.

Please refer to FIG. 17 , the driving method of the display module according to the third embodiment of the present invention is applied to the display device 4 shown in FIG. 13 . The control method of the present invention includes steps S31 to S35.

Step S31 , transmitting a non-DC signal between the first driving unit and the second driving unit. Step S32, outputting a first driving signal by the first driving unit. Step 33 , outputting a second driving signal from the second driving unit, wherein the non-DC signal controls the actions of the first driving unit and the second driving unit. Step 34 , the level conversion circuit selects the first driving signal to pass through the level conversion unit or the bypass unit according to a selection signal, and outputs a scan signal to the scan line, or outputs a display signal to the data line. In step S35 , the level shifting circuit selects the second driving signal to pass through the level shifting unit or the bypass unit according to the selection signal, so as to output the scan signal to the scan line, or output the display signal to the data line.

The detailed control method has been described in detail in the above embodiment, so it will not be repeated here. It is worth mentioning that the above steps are not limited to this order, and the steps can be exchanged according to the needs of the process.

In addition, in the third embodiment, the arrangement of the scanning lines S ₂₁ -S _2n connecting the driving circuit 22 and the display module 2 and the data lines D ₂₁ -D _2m connecting the level conversion circuit 22 and the display module 2 is not limited. Those skilled in the art should be able to arrange the scan lines S ₂₁ -S _2n and the data lines D ₂₁ -D _2m in a staggered manner as shown in FIG. 16 and FIG. 17 , or arrange them in other forms, without limitation.

In summary, according to the driving circuit, display device and display device control method of the present invention, the driving circuit having a shift register unit and a level shift unit is used to enable the display module to display image images. Compared with the conventional technology, the display device of the present invention not only integrates the traditional scanning driving circuit and data driving circuit, but also uses a driving circuit with a simpler structure to process scanning signals and display signals at the same time. Therefore, the driving circuit, the display device and the control method of the display device of the present invention can reduce the number of components to save space, thereby saving production cost.

The above description is for illustration only, not for limitation. Any equivalent modifications or changes made without departing from the spirit and scope of the present invention shall be included in the scope of the appended claims.

Claims (29)

1. display module comprises:

The one scan line;

One data line;

One drive circuit, at least one the second driver element that it has at least one the first driver element and is electrically connected to it, and receive an input signal, wherein this input signal has a plurality of driving data and a plurality of image data, described driving data and described image data transmit between this first driver element and this second driver element, this first driver element and this second driver element store described driving data and described image data, this the first driver element output one first drives signal to this sweep trace, and this second driver element output one second drives signal; And

One level shifting circuit, it is electrically connected to this driving circuit and this data line, and exports a display to this data line according to this second driving signal.

2. display module as claimed in claim 1, wherein this first driver element receives described driving data and described image data by this second driver element, or this second driver element is by this first driver element described driving data of reception and described image data.

3. display module as claimed in claim 1, wherein this level shifting circuit is adjusted this second voltage level that drives signal.

4. display module as claimed in claim 1, wherein this level shifting circuit also receives an output enable signal, and exports this display to this data line according to this output enable signal.

5. display module as claimed in claim 1, wherein at least a portion of this driving circuit and this level shifting circuit is made with a monocrystalline technique, a polycrystalline technique or an amorphous technique.

6. display module as claimed in claim 5, wherein this amorphous technique is an amorphous silicon membrane electric crystal technique or an OTFT technique.

7. display module as claimed in claim 1, wherein this level shifting circuit is a sample-and-hold circuit or a level shift circuit.

8. the driving method of a display module, this display module has one scan line, a data line, one drive circuit and a level shifting circuit, this driving circuit has at least one the first driver element and at least one the second driver element, and this driving method comprises following steps:

This driving circuit receives an input signal, and wherein this input signal has a plurality of driving data and a plurality of image data;

Transmit described driving data and described image data between this first driver element and this second driver element;

This first driver element output one first drives signal to this sweep trace;

This second driver element output one second drives signal, and wherein this first driver element and this second driver element store described driving data and described image data; And

This level shifting circuit is exported a display to this data line according to this second driving signal.

9. driving method as claimed in claim 8 also comprises:

Adjusted a voltage level of this second driving signal by this level shifting circuit.

10. driving method as claimed in claim 8 also comprises:

By this level shifting circuit foundation one output enable signal, and export this display to this data line.

11. a display module comprises:

The one scan line;

One data line;

One drive circuit, at least one the second driver element that it has at least one the first driver element and is electrically connected to it, and receive an input signal, wherein this input signal has a plurality of driving data and a plurality of image data, described driving data and described image data transmit between this first driver element and this second driver element, this first driver element and this second driver element store described driving data and described image data, this the first driver element output one first drives signal, and this second driver element output one second drives signal to this data line; And

One level shifting circuit, it is electrically connected to this driving circuit and this sweep trace, and exports one scan signal to this sweep trace according to this first driving signal.

12. display module as claimed in claim 11, wherein this first driver element receives described driving data and described image data by this second driver element, or this second driver element receives described driving data and described image data by this first driver element.

13. display module as claimed in claim 11, wherein this level shifting circuit is adjusted a voltage level of this first driving signal.

14. display module as claimed in claim 11, wherein this level shifting circuit also receives an output enable signal, and exports this sweep signal to this sweep trace according to this output enable signal.

15. display module as claimed in claim 11, wherein at least a portion of this driving circuit and this level shifting circuit is made with a monocrystalline technique, a polycrystalline technique or an amorphous technique.

16. display module as claimed in claim 15, wherein this amorphous technique is an amorphous silicon membrane electric crystal technique or an OTFT technique.

17. display module as claimed in claim 11, wherein this level shifting circuit comprises a sample-and-hold circuit or a level shift circuit.

18. the driving method of a display module, this display module has one scan line, a data line, one drive circuit and a level shifting circuit, this driving circuit has at least one the first driver element and at least one the second driver element, and this driving method comprises following steps:

This driving circuit receives an input signal, and wherein this input signal has a plurality of driving data and a plurality of image data;

Transmit described driving data and described image data between this first driver element and this second driver element;

This first driver element output one first drives signal;

This second driver element output one second drives signal to this data line, and wherein this first driver element and this second driver element store described driving data and described image data; And

This level shifting circuit is exported one scan signal to this sweep trace according to this first driving signal.

19. driving method as claimed in claim 18 also comprises:

Adjusted a voltage level of this first driving signal by this level shifting circuit.

20. driving method as claimed in claim 18 also comprises:

By this level shifting circuit foundation one output enable signal, and export this sweep signal to this sweep trace.

21. a display module comprises:

The one scan line;

One data line;

One drive circuit, at least one the second driver element that it has at least one the first driver element and is electrically connected to it, and receive an input signal, wherein this input signal has a plurality of driving data and a plurality of image data, described driving data and described image data transmit between this first driver element and this second driver element, this first driver element and the second driver element store described driving data and described image data, this the first driver element output one first drives signal, and this second driver element output one second drives signal; And

one level shifting circuit, it has a level conversion unit and bypass unit in parallel with it, this level shifting circuit and this driving circuit, this sweep trace and this data line are electrically connected to, and select signal that this first driving signal is selected via this level conversion unit or this by-pass unit according to one, and output one scan signal is to this sweep trace, or export this display to this data line, perhaps select signal that this second driving signal is selected via this level conversion unit or this by-pass unit according to this, and export this sweep signal to this sweep trace, or export this display to this data line.

22. display module as claimed in claim 21, wherein this level shifting circuit is adjusted respectively a voltage level of this first driving signal and this second driving signal.

23. display module as claimed in claim 21, wherein this level shifting circuit also receives an output enable signal, and exports this sweep signal to this sweep trace according to this output enable signal, or exports this display to this data line.

24. display module as claimed in claim 21, wherein at least a portion of this driving circuit and this level shifting circuit is made with a monocrystalline technique, a polycrystalline technique or an amorphous technique.

25. display module as claimed in claim 24, wherein this amorphous technique is an amorphous silicon membrane electric crystal technique or an OTFT technique.

26. display module as claimed in claim 21, wherein this level shifting circuit comprises a sample-and-hold circuit or a level shift circuit.

27. the driving method of a display module, this display module has one scan line, a data line, one drive circuit and a level shifting circuit, this driving circuit has at least one the first driver element and at least one the second driver element, this level shifting circuit has a level conversion unit and bypass unit in parallel with it, and this driving method comprises following steps:

This driving circuit receives an input signal, and wherein this input signal has a plurality of driving data and a plurality of image data;

Transmit described driving data and described image data between this first driver element and this second driver element;

This first driver element output one first drives signal;

This second driver element output one second drives signal, and wherein this first driver element and this second driver element store described driving data and described image data;

This level shifting circuit selects signal that this first driving signal is selected via this level conversion unit or this by-pass unit according to one, and exports the one scan signal to this sweep trace, or exports this display to this data line; And

Select signal that this second driving signal is selected via this level conversion unit or this by-pass unit by this level shifting circuit according to this, and export this sweep signal to this sweep trace, or export this display to this data line.

28. driving method as claimed in claim 27 also comprises:

Adjusted a voltage level of this first driving signal and/or this second driving signal by this level shifting circuit.

29. driving method as claimed in claim 27 also comprises:

By this level shifting circuit foundation one first output enable signal, and export this sweep signal to this sweep trace; And

By this level shifting circuit foundation one second output enable signal, and export this display to this data line.

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