KR102010848B1 - Liquid crystal display and methods of manufacturing and driving the same - Google Patents

Abstract

The present invention provides a display panel including a display area and a non-display area around the display area; A common wiring crossing the display area along a first direction; A first common transmission wiring connected to the common wiring and extending in a second direction crossing the first direction and extending in parallel to the first common transmission wiring in the non-display area on one side of the display region; 2 and 3 common transmission wiring; An output unit configured to output a common voltage input to the first ends of the first and third common transfer wirings; And a switch unit electrically connecting the first ends of the first and second common communication wires or electrically connecting the first ends of the second and third common communication wires. Two ends provide a liquid crystal display device connected to each other.

Description

Liquid crystal display and its manufacturing method and driving method {Liquid crystal display and methods of manufacturing and driving the same}

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device, a manufacturing method and a driving method thereof.

As the information society develops, the demand for display devices for displaying images is increasing in various forms. Recently, liquid crystal displays (LCDs), plasma display panels (PDPs), organic fields Various flat display devices such as organic electroluminescent display devices (OELD) are being utilized.

Among these flat panel display devices, liquid crystal display devices have advantages of miniaturization, light weight, thinness, and low power driving, and are widely used in recent years.

As the liquid crystal display device, an active matrix type liquid crystal display device in which a switching transistor is formed in each of the pixels arranged in a matrix form is commonly used.

A liquid crystal display device can express a desired image by applying a data voltage to a pixel electrode and applying a common voltage to a common electrode to change the arrangement of liquid crystals through an electric field generated between these electrodes.

Recently, an in-plane switching mode liquid crystal display device having excellent viewing angle characteristics has been widely used. In a transverse electric field type liquid crystal display device, a pixel electrode and a common electrode are formed on the same array substrate to form a transverse electric field parallel to the substrate surface.

In a transverse electric field type liquid crystal display device, a plurality of common wires connected to a common electrode positioned in a pixel area are formed along a left and right direction across a display area of an array substrate. The plurality of common wires are connected to the common transfer wires extending in the vertical direction outside the display area.

The common voltage output from the external common voltage source is input to the common transfer wiring through, for example, an upper end side of the liquid crystal panel, and is then applied to the common electrode through the common wiring.

In the conventional common voltage transfer structure, the lower end portion of the liquid crystal panel, which is far from the common voltage source, is vulnerable to signal delay or distortion due to the influence of parasitic capacitor generated due to interference with the circuit inside the liquid crystal panel. .

Accordingly, the lower end of the liquid crystal panel has a disadvantage of common voltage compensation. Therefore, a problem arises in that it cannot be improved upon vertical asymmetry of the common voltage.

As described above, when the common voltage imbalance occurs in the conventional liquid crystal display, it cannot be solved.

SUMMARY OF THE INVENTION The present invention has a problem to provide a liquid crystal display device, a manufacturing method and a driving method thereof that can solve the common voltage imbalance.

In order to achieve the above object, the present invention provides a display panel including a display area and a non-display area around the display area; A common wiring crossing the display area along a first direction; A first common transmission wiring connected to the common wiring and extending in a second direction crossing the first direction and extending in parallel to the first common transmission wiring in the non-display area on one side of the display region; 2 and 3 common transmission wiring; An output unit configured to output a common voltage input to the first ends of the first and third common transfer wirings; And a switch unit electrically connecting the first ends of the first and second common communication wires or electrically connecting the first ends of the second and third common communication wires. Two ends provide a liquid crystal display device connected to each other.

Here, the switch unit, and the first switch for turning on / off the first end of the first and second common transmission wiring; It may include a second switch for turning on / off the connection of the first end of the second and third common transfer wiring.

The output unit may include first and second output circuits for outputting first and second common voltages, respectively, and the first and second common voltages may be input to the first and third common transfer wirings, respectively.

The first to third common transfer wirings may be sequentially disposed in an outer direction of the display area.

The first to third common transfer wirings may be symmetrically formed in the non-display areas on both sides of the display area with respect to the display area.

In another aspect, the present invention provides a method of driving a liquid crystal display device including a display panel including a display area and a non-display area around the display area, wherein the switching operation is performed according to common voltage transmission path information. And electrically connecting a first end of the second common transfer wiring, or electrically connecting the second end of the second common transfer wiring and the first end of the third common transfer wiring; And inputting a common voltage to a first end of the first and third common transfer wirings, wherein the liquid crystal display device is configured to cross the display area along a first direction and to be connected to the first common transfer wiring. And a first wiring, wherein the first to third common transfer wirings extend in a non-display area on one side of the display area along a second direction crossing the first direction, and the second ends thereof are connected to each other. It provides a driving method.

Here, the common voltage transmission path information may be information obtained based on the location-level image level result detected by the image inspection of the display panel.

The switching operation may be performed at power-on of the liquid crystal display.

In another aspect, the present invention provides a method of manufacturing a liquid crystal display device, comprising the steps of: manufacturing a display panel including a display area and a non-display area around the display area; Performing an image inspection on the display panel to detect an image level of each position; Setting common voltage transfer path information based on the image level to the liquid crystal display device, wherein the display panel comprises: common wiring crossing the display area along a first direction; A first common transmission wiring connected to the common wiring and extending in a second direction crossing the first direction and extending in parallel to the first common transmission wiring in the non-display area on one side of the display region; A common voltage is input to a first end of the first and third common transfer wirings, and a first end of the first and second common transfer wirings according to the common voltage transfer path information. The electrically connected or the first ends of the second common transfer wiring and the third common transfer wiring are electrically connected, and the second ends of the first to third common transfer wiring are connected to each other. do.

Here, the liquid crystal display device comprises: a first switch for turning on / off a connection of a first end of the first and second common transfer wirings; It may include a second switch for turning on / off the connection of the first end of the second and third common transfer wiring.

The liquid crystal display device may include first and second output circuits for outputting first and second common voltages, respectively, and the first and second common voltages may be input to the first and third common transfer wirings, respectively.

The first to third common transfer wirings may be sequentially disposed in an outer direction of the display area.

The first to third common transfer wirings may be symmetrically formed in the non-display areas on both sides of the display area with respect to the display area.

In the present invention, three or more common transfer wirings may be arranged on at least one side of the display area, and the connection relationship thereof may be adjusted to change the common voltage transfer path. Accordingly, the resistance value of the common voltage transfer path to the position where the common voltage nonuniformity occurs in the display panel can be adjusted. As a result, the common voltage nonuniformity can be improved to improve the image level of the display panel.

Therefore, even if the image level decreases due to the loss of the common voltage at a specific position of the manufactured display panel, this can be improved, thereby improving the productivity of the liquid crystal display.

1 is a schematic view of a liquid crystal display device according to an embodiment of the present invention;
FIG. 2 schematically illustrates an example of the pixel structure of FIG. 1; FIG.
3 is a diagram schematically illustrating a common voltage transmission path according to an embodiment of the present invention.
4 to 7 schematically illustrate common voltage transfer paths when image levels of lower, upper, lower right and lower left portions of a display panel according to an exemplary embodiment of the present invention are lowered.
8 is a flowchart schematically illustrating a method of manufacturing a liquid crystal display device according to an exemplary embodiment of the present invention.
9 is a view measuring image levels of a liquid crystal display according to an exemplary embodiment of the present invention and a conventional liquid crystal display.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a view schematically showing a liquid crystal display device according to an exemplary embodiment of the present invention, and FIG. 2 is a view schematically showing an example of the pixel structure of FIG. 1.

1 and 2, the liquid crystal display device 100 according to the exemplary embodiment of the present invention may include a display panel 110 and a driving circuit unit for driving the display panel 110.

Here, the driving circuit unit may include a data driver 120, a gate driver 130, a timing controller 140, and a common voltage unit 150.

The display panel 110 includes an array substrate and a corresponding substrate, for example, a color filter substrate, and a liquid crystal layer positioned between the array substrate and the color filter substrate.

The display panel 110 defines a display area AA and a non-display area NA around the display area. In the display area AA, a plurality of pixels P are arranged in a matrix to correspond to an active area displaying an image.

The array substrate of the display panel 110 includes a gate wiring GL extending in a horizontal direction (ie, a left and right direction) as a first direction, and a column direction as a second direction crossing the first direction, for example. (I.e., up and down direction), the data wiring DL is extended. The common wiring CL spaced apart in parallel with the gate wiring GL in the lateral direction is formed.

The gate line and the data line GL and DL are connected to the corresponding pixel P. Here, the pixel P may include an R (red) pixel displaying red, a G (green) pixel displaying green, and a B (blue) pixel displaying blue. For example, the R, G, and B pixels may be alternately arranged along the row direction, and the consecutive R, G, and B pixels may function as units of an image display.

Referring to FIG. 2, each of the pixels P of the array substrate may include a switching transistor T, pixel electrodes, and common electrodes PE and CE.

The switching transistor T is connected to the corresponding gate line and data line GL and DL. The switching transistor T includes a gate electrode G connected to the gate wiring GL, a semiconductor layer SL formed on the gate electrode G, and a source electrode formed on the semiconductor layer SL and spaced apart from each other. And drain electrodes S and D. Here, the source electrode S is connected to the data line DL.

The pixel electrode and the common electrode PE and CE may be alternately arranged in the pixel area defined by the gate wiring and the data wiring GL and DL that cross each other. The pixel electrode PE is connected to the drain electrode D, and the common electrode CE is connected to the common wiring CL.

The data voltage transferred through the data line DL is applied to the pixel electrode PE, and the common voltage Vcom transferred through the common line CL is applied to the common electrode CE. Accordingly, an in-plane electric field substantially parallel to the substrate direction may be generated between the pixel electrode and the common electrode PE and CE to drive the liquid crystal.

In the foregoing description, the transverse electric field type liquid crystal display device 100 in which the pixel electrodes and the common electrodes PE and CE are alternately disposed is taken as an example, but various other types of liquid crystal display devices 100 may be used. .

The timing controller 140 may, for example, connect a vertical / horizontal synchronization signal, a data enable signal, a dot clock, and the like from an external host system through an interface such as a low voltage differential signaling (LVDS) interface or a transition minimized differential signaling (TMDS) interface. Receives an external timing signal.

Using the timing signal, the timing controller 140 may generate a data control signal for controlling the data driver 120 and a gate control signal for controlling the gate driver 130.

Meanwhile, the timing controller 140 receives image data from an external system, processes the image data, and supplies the image data to the data driver 120.

The data driver 120 may be configured of, for example, a plurality of drive ICs. The driving IC may be connected to the display panel 110 through a chip on glass (COG) process or a chip on film (COF) process and connected to the corresponding data line DL.

The data driver 120 receives the digital image data and the data control signal output from the timing controller 140, and in response thereto, outputs the data voltage to the corresponding data wiring DL. For example, in response to the data control signal, the input image data is converted into a parallel form, and converted into a positive / negative analog data voltage and output to the corresponding data wiring DL.

Although not shown, the gamma voltage unit may be provided in the liquid crystal display device 100. The gamma voltage unit generates a gamma voltage and supplies the gamma voltage to the data driver 120. The gamma voltage unit may generate a data voltage corresponding to the image data using the gamma voltage supplied as described above.

The gate driver 130 is supplied directly from the timing controller 140 or sequentially supplies the gate voltage to the gate wiring GL according to a gate control signal supplied through the data driver 120. The gate driver 130 may include a plurality of driving ICs, but is not limited thereto. For example, the gate driver 130 may be directly formed in the non-display area NA of the array substrate during the array substrate manufacturing process using a gate in panle (GIP) method.

When the gate voltage is supplied to the gate line GL, the switching transistor T connected thereto is turned on, and in synchronization therewith, the data voltage supplied through the data line DL is applied to the pixel P. It becomes possible.

The common voltage unit 200 generates a common voltage Vcom applied to the common electrode CE and outputs the common voltage Vcom. The common voltage Vcom output as described above is input to one end of the display panel 110. In the embodiment of the present invention, for convenience of description, the case in which the common voltage Vcom is input to the top of the top, bottom, left and right of four side ends of the display panel 110 will be described as an example.

The input common voltage Vcom is transferred to the common line CL through the common transfer line CSL. Accordingly, the common voltage Vcom may be applied to the common electrode CE connected to the common wiring CL.

Hereinafter, a common voltage transfer path according to an embodiment of the present invention will be described in more detail with reference to FIG. 3. 3 is a diagram schematically illustrating a common voltage transfer path according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the common transfer wiring CSL is configured to extend along the column direction in the non-display area NA of the array substrate. The common transfer wiring CSL is preferably configured in the non-display areas NA on both sides with the display area AA interposed therebetween, but is not limited thereto. In the non-display area NA on one side of the display area AA, three or more common transfer wirings CSL are preferably formed. In the embodiment of the present invention, for convenience of description, a case where three common transfer wirings CSL are formed in each of the non-display areas NA on both sides with the display area AA therebetween will be described as an example.

The common transfer wiring CSL configured at one side of the display area AA may include first to third common transfer wirings CSL1 to CSL3 disposed along the outer direction and extending in parallel to each other.

As one end of the first to third common transfer wirings CSL1 to CSL3, for example, the common voltage Vcom may be input to an end close to an upper end, that is, a first end. On the other hand, as the other end of the first to third common transfer wiring (CSL1 to CSL3), for example, the end close to the lower end, that is, the second end may be configured to have a state connected to each other, that is, a short state.

As one of the first to third common transfer wires CSL1 to CSL3, for example, the first common transfer wire CSL1 positioned at the innermost side is configured to be connected to a plurality of common lines CL across the display area AA. Can be. In this case, the common transfer wirings CSL2 and CSL3 other than the first common transfer wiring CSL1 may be configured not to be directly connected to the common wiring CL.

Meanwhile, a feedback structure may be applied to compensate for the distortion of the waveform of the common voltage Vcom. In this case, one of the first to third common transfer wirings CSL1 to CSL3 located on one side of both sides of the display area AA may function as a feedback output terminal. In the embodiment of the present invention, for convenience of description, a case in which the first common transfer wiring CSL1 is configured as a feedback output terminal among the first to third common transfer wirings CSL1 to CSL3 located on the right side of the display area AA is described. Take as an example.

The common voltage unit 200 configured to supply the common voltage Vcom to the common transfer wiring CSL may include an output unit 210 and a switch unit 220.

The output unit 210 outputs the common voltage Vcom using the input reference voltage Vref, and the output common voltage Vcom is input to the common transfer wiring CSL.

Meanwhile, the output unit 210 may output two common voltages Vcom1 and Vcom2 independently generated from each other. For this purpose, the output unit 210 may include first and second output circuits 211 and 212. Can be.

In this case, the first and second common voltages Vcom1 output from the first and second output circuits 211 are supplied to the first to third common transfer wirings CSL1 to CSL3, and the first and second common voltages The propagation paths of Vcom1 and Vcom2 do not overlap. For example, the first and second common voltages Vcom1 and Vcom2 are directly input to the first and third common transfer wirings CSL1 and CSL3, respectively, and the second common transfer wiring CSL2 may optionally have a first common voltage. Vcom1 or the second common voltage Vcom2 may be input.

Each of the first and second output circuits 211 and 212 may use a non-inverting amplifier. In this case, the inverting terminal compensates for the common voltage Vcom by receiving the common voltage feedback with the resistors R1 and R3 therebetween and performing non-inverting amplification. On the other hand, resistors R2 and R4 are configured between the output terminal and the inverting terminal. Here, the first and second common voltages Vcom1 and Vcom2 may be adjusted by adjusting the resistors R1 and R2, R3 and R4 of the first and second output circuits 211 and 212.

The switch unit 220 functions as a configuration for converting the transfer path of the common voltage Vcom. For example, through the switching operation of the switch unit 220, the first end of the second common transfer wiring (Vcom) is electrically shorted with the first end of one of the first and third common transfer wiring and the other one It can be electrically disconnected from one end.

For this operation, the switch unit 220 may include first to fourth switches SW1 to SW4. For example, the first switch SW1 is configured between the first and second common transfer wirings CSL1 and CSL2 on the left side of the display area AA, and the first switch SW1 is formed between the second and third common transfer wirings CSL2 and CSL3. Two switches SW2 may be configured. Similarly, the third switch SW3 is configured between the first and second common transfer wirings CSL1 and CSL2 on the right side of the display area AA, and the third switch SW3 is disposed between the second and third common transfer wirings CSL2 and CSL3. Four switches SW4 may be configured.

In this case, the first and second switches SW1 and SW2 perform the opposite switching operations, that is, when the first switch SW1 is turned on / off, the second switch SW2 is turned on. Off / on. Accordingly, the first end of the second common transfer wiring CSL2 is connected to one of the first and third common transfer wirings CSL1 and CSL3 and is not connected to the other one.

The third and fourth switches SW3 and SW4 operate in a similar manner to the first and second switches SW1 and SW2.

According to the same configuration as described above, it is possible to adjust the resistance value of the common voltage transfer path at the upper end or the lower end of the display panel 110. For example, when the first and second common transfer wirings CSL1 and CSL2 are connected, the resistance of the common voltage transfer path of the upper end is lowered. On the other hand, when the second and third common transfer wirings CSL2 and CSL3 are connected, the resistance of the common voltage transfer path at the lower end is lowered.

Meanwhile, in the above description, the common voltage unit 200 is preferably configured in the driving circuit board outside the display panel 110, but is not limited thereto.

As described above, by adjusting the resistance of the common voltage transmission path, the image voltage may be improved by improving the common voltage nonuniformity according to the position of the display panel 110. This will be described in detail with reference to FIGS. 4 to 7.

4 to 7 schematically illustrate common voltage transfer paths when image levels of lower, upper, lower right and lower left portions of a display panel according to an exemplary embodiment of the present invention are reduced.

First, referring to FIG. 4, when the common voltage loss occurs at the lower end of the display panel 110 and the image level is lowered, the second and fourth switches SW2 and SW4 are turned on and the first and third switches SW1, Turn off SW3). Accordingly, the resistance of the common voltage transfer path at the lower end of the display panel 110 is lowered, so that the common voltage loss can be improved. Therefore, the image level of the lower end portion can be improved.

Next, referring to FIG. 5, when the common voltage loss occurs at the upper end of the display panel 110 and the image level is lowered, the first and third switches SW1 and SW3 are turned on and the second and fourth switches ( SW2, SW4) are turned off. Accordingly, the resistance of the common voltage transfer path of the upper end of the display panel 110 is lowered, thereby reducing the common voltage loss. Thus, the image level of the upper end can be improved.

Next, referring to FIG. 6, when the common voltage loss occurs in the lower right portion of the display panel 110 and the image level is lowered, the first and fourth switches SW1 and SW4 are turned on and the second and third switches are turned on. Turn off (SW2, SW3). Accordingly, the resistance of the common voltage transmission path of the lower right side of the display panel 110 may be lowered, thereby reducing the common voltage loss. Therefore, the image level of the lower right part can be improved.

Next, referring to FIG. 7, when the common voltage loss occurs in the lower left portion of the display panel 110 to reduce the image level, the second and third switches SW2 and SW3 are turned on and the first and fourth switches are turned on. Turn off (SW1, SW4). Accordingly, the resistance of the common voltage transfer path at the lower left of the display panel 110 may be lowered, thereby reducing the common voltage loss. Thus, the image level of the lower left portion can be improved.

As described above, according to the exemplary embodiment of the present invention, three or more common transfer wirings may be disposed on at least one side of the display area, and the connection relationship thereof may be adjusted to change the common voltage transfer path. Accordingly, the resistance value of the common voltage transfer path to the position where the common voltage nonuniformity occurs in the display panel can be adjusted. As a result, the common voltage nonuniformity can be improved to improve the image level of the display panel.

Therefore, even if the image level decreases due to the loss of the common voltage at a specific position of the manufactured display panel, this can be improved, thereby improving the productivity of the liquid crystal display.

Hereinafter, a method of manufacturing a liquid crystal display device according to an exemplary embodiment of the present invention will be described with reference to FIG. 8.

8 is a flowchart schematically illustrating a method of manufacturing a liquid crystal display device according to an exemplary embodiment of the present invention.

Referring to FIG. 8, first, a process of manufacturing the display panel 110 is performed (st1). In this regard, for example, an array substrate and a counter substrate are manufactured, and the two completed substrates are bonded to each other with a liquid crystal layer interposed therebetween to manufacture the display panel 100.

An image inspection is performed on the display panel 110 manufactured as described above (st2). In this regard, for example, an image inspection is performed by displaying a crosstalk pattern or a flicker pattern on the screen of the display panel 110. Through such an image inspection, for example, the image level of each position can be detected as the image level of the display panel 110.

When the image level of the display panel 110 is detected as described above, the common voltage transfer path is determined based on this, and the common voltage transfer path information is set in the liquid crystal display as information related thereto (st3). In this regard, for example, the common voltage transmission path information may be stored in a nonvolatile memory such as an EEPROM as a memory of the liquid crystal display.

Through the above-described process, the liquid crystal display device according to the embodiment of the present invention can be manufactured.

Meanwhile, when the manufactured liquid crystal display device is powered on and starts to drive, the switching operation of the switch unit 220 is controlled according to the above-described common voltage transfer path information, thereby controlling the common voltage transfer path.

9 is a view measuring image levels of a liquid crystal display according to an exemplary embodiment of the present invention and a conventional liquid crystal display. Prior to the description, a value of '2' or less corresponds to a normal image level.

Referring to FIG. 9, in the conventional case, the image level of the upper end was measured as '1', and the image level of the lower end was measured as '3'.

On the other hand, in the case of the embodiment of the present invention, the image level of the upper part is measured as '1' and the image level of the lower part is measured as '2'.

As such, according to the exemplary embodiment of the present invention, it can be confirmed that the image level of the lower end portion is improved by '1' level as compared with the conventional art.

Embodiment of the present invention described above is an example of the present invention, it is possible to change freely within the scope included in the spirit of the present invention. Accordingly, the invention includes modifications of the invention within the scope of the appended claims and their equivalents.

210: output unit 211: first output circuit
212: second output circuit 220: switch unit
CSL1 to CSL3: First to Third Common Transmission Wiring
SW1 to SW4: first to fourth switches

Claims (16)

A display panel including a display area and a non-display area around the display area;
A common wiring crossing the display area along a first direction;
A first common transmission wiring connected to the common wiring and extending in a second direction crossing the first direction and extending in parallel to the first common transmission wiring in the non-display area on one side of the display region; 2 and 3 common transmission wiring;
An output unit configured to output a common voltage input to the first ends of the first and third common transfer wirings;
And a switch unit electrically connecting the first ends of the first and second common communication wirings to each other, or electrically connecting the first ends of the second and third common communication wirings to each other.
The second end of the first to third common transfer wiring is connected to each other
LCD display device.
The method of claim 1,
The switch unit,
A first switch for turning on / off a connection of the first ends of the first and second common transmission wirings;
And a second switch for turning on / off a connection of the first ends of the second and third common transmission wirings.
LCD display device.
The method of claim 1,
The output unit includes first and second output circuits for outputting first and second common voltages, respectively,
The first and second common voltages are respectively input to the first and third common transmission wirings.
LCD display device.
The method of claim 1,
The first to third common transfer wirings, and are sequentially disposed in an outward direction of the display area
LCD display device.
The method of claim 1,
The first to third common transfer wirings are symmetrically formed in the non-display areas on both sides of the display area with respect to the display area.
LCD display device.
A driving method of a liquid crystal display device comprising a display panel including a display area and a non-display area around the display area.
The switching operation is performed according to the common voltage transmission path information to electrically connect the first ends of the first and second common transfer wirings to each other, or the first ends of the second common transfer wiring and the third common transfer wiring to each other. Connecting with;
Inputting a common voltage to the first ends of the first and third common transfer wirings;
The liquid crystal display device includes a common line crossing the display area along a first direction and connected to the first common transfer line.
The first to third common transmission wirings extend in a non-display area on one side of the display area along a second direction crossing the first direction, and the second ends are connected to each other.
Liquid crystal display driving method.
The method of claim 6,
The common voltage transmission path information is information obtained based on a location-level image level result detected by image inspection of the display panel.
Liquid crystal display driving method.
The method of claim 6,
The switching operation is performed at power on of the liquid crystal display.
Liquid crystal display driving method.
In the manufacturing method of the liquid crystal display device,
Manufacturing a display panel including a display area and a non-display area around the display area;
Performing an image inspection on the display panel to detect an image level of each position;
Setting common voltage transfer path information on the liquid crystal display device based on the image level;
The display panel may include a common wiring crossing the display area along a first direction; A first common transmission wiring connected to the common wiring and extending in a second direction crossing the first direction and extending in parallel to the first common transmission wiring in the non-display area on one side of the display region; Including 2 and 3 common transmission wiring,
The common voltage is input to the first ends of the first and third common transfer wirings,
According to the common voltage transmission path information, the first end of the first and second common transfer wiring are electrically connected to each other, or the first end of the second common transfer wiring and the third common transfer wiring are electrically connected to each other. ,
Second ends of the first to third common transmission wirings are connected to each other.
Liquid crystal display device manufacturing method.
The method of claim 9,
The liquid crystal display device,
A first switch for turning on / off a connection of the first ends of the first and second common transmission wirings;
And a second switch for turning on / off a connection of the first ends of the second and third common transmission wirings.
Liquid crystal display device manufacturing method.
The method of claim 9,
The liquid crystal display device,
First and second output circuits respectively outputting first and second common voltages;
The first and second common voltages are respectively input to the first and third common transmission wirings.
Liquid crystal display device manufacturing method.
The method of claim 9,
The first to third common transfer wirings are sequentially arranged in an outward direction of the display area.
Liquid crystal display device manufacturing method.
The method of claim 9,
The first to third common transfer wirings are symmetrically formed in the non-display areas on both sides of the display area with respect to the display area.
Liquid crystal display device manufacturing method. The method of claim 1,
The switch unit,
In the case where the first ends of the first and second common transfer wirings are electrically connected to each other, the first ends of the second and third common transfer wirings are electrically disconnected from each other,
In the case where the first ends of the second and third common transfer wirings are electrically connected to each other, the first ends of the first and second common transfer wirings are electrically disconnected from each other.
LCD display device.
The method of claim 6,
In performing the switching operation according to the common voltage transmission path information,
In the case where the first ends of the first and second common transfer wirings are electrically connected to each other, the first ends of the second and third common transfer wirings are electrically disconnected from each other,
In the case where the first ends of the second and third common transfer wirings are electrically connected to each other, the first ends of the first and second common transfer wirings are electrically disconnected from each other.
Liquid crystal display driving method.
The method of claim 9,
According to the common voltage transfer path information,
In the case where the first ends of the first and second common transfer wirings are electrically connected to each other, the first ends of the second and third common transfer wirings are electrically disconnected from each other,
In the case where the first ends of the second and third common transfer wirings are electrically connected to each other, the first ends of the first and second common transfer wirings are electrically disconnected from each other.
Liquid crystal display device manufacturing method.

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