CN101236344A - Liquid crystal display device and driving method thereof - Google Patents

Abstract

The invention relates to a liquid crystal display device and a driving method thereof. The substrate comprises a pixel array, and the pixel array comprises a plurality of pixels arranged in a matrix. The plurality of data lines are electrically connected to the pixel array. The plurality of gate lines are electrically connected to the pixel array, and the gate lines comprise a plurality of odd gate lines and a plurality of even gate lines, wherein one of the odd gate lines and one of the even gate lines are electrically connected to the pixels in the same row. The gate driving circuit comprises a first gate driving circuit and a second gate driving circuit, wherein the first gate driving circuit is electrically connected with the odd gate lines, and the second gate driving circuit is electrically connected with the even gate lines. The source electrode driving circuit is electrically connected to the data line. The invention reduces the complexity of circuit design and reduces the cost.

Description

Liquid crystal display device and driving method thereof

technical field

The present invention relates to a liquid crystal display device, in particular to a pixel structure of a liquid crystal display device and a driving method thereof.

Background technique

With the evolution of display technology, traditional cathode ray tube displays have been gradually eliminated. Lighter, thinner, and more power-efficient displays, such as liquid crystal display devices and plasma displays, have gradually become mainstream products in the market. While liquid crystal display device technology is developing vigorously, many differentiated products have also been proposed, such as dual view display (dual view display), three-dimensional display (3D display), etc., and related researches are gradually increasing.

FIG. 1 is a schematic diagram of a pixel structure of a traditional three-dimensional display. As shown in FIG. 1 , a three-dimensional display 10 includes a gate drive circuit 101, a source drive circuit 102, and a plurality of pixels 103 arranged in a matrix. With a special pixel layout and various film materials, the user can watch , only the left eye can see the image displayed by odd-numbered rows of pixels, and the right eye can only see the image displayed by even-numbered rows of pixels. In this way, the purpose of stereoscopic display can be achieved.

Please refer to FIG. 2 , which is a block diagram of a driving architecture system of a traditional 3D display. The driving architecture system includes a first input source 201 , a second input source 202 , a timing control integrated circuit 204 , a synchronous dynamic random access memory 205 (Static Dynamic Random Access Memory, SDRAM), and a source driving circuit 102 . Traditionally, since the data areas for transmitting odd-numbered pixels and data areas for even-numbered pixels are provided by two different input sources, in order to synchronize the data transmitted by different input sources, it is necessary to use SDRAM 205 It is used as a frame memory (Frame Memory) to store data transmitted from the first input source 201 and the second input source 202. Although the effect of stereoscopic display can be achieved through such a driving method, this architecture has at least the following disadvantages: 1. SDRAM is quite expensive, which will lead to an increase in cost. 2. Since the SDRAM is used for data storage and reading, the timing control integrated circuit 204 requires more control signals, thereby increasing the complexity of the control circuit. Similar to the problems encountered by three-dimensional displays: traditional dual-view displays also need to use SDRAM as a frame memory, so there will be the above-mentioned disadvantages such as rising costs and complicated control signals.

To sum up, there are still many challenges in the design and manufacture of 3D displays and dual-view displays; how to reduce the complexity and cost of circuit design is still a problem that the industry needs to work hard to solve.

Contents of the invention

An object of the present invention is to provide a liquid crystal display device, comprising: a substrate, a plurality of data lines, a plurality of gate lines, a first gate drive circuit, a second gate drive circuit and a source drive circuit, the The substrate includes a pixel array, the pixel array includes a plurality of pixels arranged in a matrix; the data line is electrically connected to the pixel array; the gate line is electrically connected to the pixel array, and the gate line includes a plurality of an odd gate line and a plurality of even gate lines, wherein one of the plurality of odd gate lines and one of the plurality of even gate lines are electrically connected to pixels in the same column; the first gate driving circuit and The odd gate lines are electrically connected; the second gate driving circuit is electrically connected to the even gate lines; the source driving circuit is electrically connected to the data lines.

Another object of the present invention is to provide a driving method of a liquid crystal display device, the liquid crystal display device includes a pixel array, the method includes: receiving a first data signal; enabling a first pixel row; transmitting the first data signals to the odd pixels of the first pixel row; receive a second data signal; enable a second pixel row; and transmit the second data signal to the even pixels of the second pixel row.

After referring to the accompanying drawings and the implementation methods described later, any person skilled in the technical field to which the invention belongs can understand other objectives and advantages of the invention, as well as the technical means and implementation methods of the invention.

The invention reduces the complexity and cost of circuit design.

Description of drawings

FIG. 1 is a schematic diagram of a pixel structure of a conventional three-dimensional display.

FIG. 2 is a block diagram of a driving architecture system of a traditional 3D display.

FIG. 3 is a schematic diagram of a pixel structure of a liquid crystal display device of the present invention.

FIG. 4 is a schematic block diagram of the driving architecture system of the liquid crystal display device of the present invention.

FIG. 5 is a timing diagram of gate driving signals of the liquid crystal display device of the present invention.

FIG. 6 is a flow chart of the driving method of the liquid crystal display device of the present invention.

Description of main component symbols

10: Three-dimensional display 101: Gate drive circuit

102: Source drive circuit 103: Pixel

201: First input source 202: Second input source

204: Timing control integrated circuit 205: Synchronous dynamic memory

30: Liquid crystal display device 301: First gate drive circuit

302: Second gate drive circuit 303: Source drive circuit

304: Pixels

305: the first gate line 306: the second gate line

307: Data line 401: The first input source

402: Second input source 404: Timing control integrated circuit

Detailed ways

Please refer to FIG. 3 , which is a schematic diagram of an embodiment of a liquid crystal display device of the present invention. The liquid crystal display device 30 includes a first gate drive circuit 301, a second gate drive circuit 302, a source drive circuit 303, a plurality of pixels 304 arranged in a matrix, and M first gates arranged in a column direction and parallel to each other. pole lines 305, and M second gate lines 306 arranged along the column direction and parallel to each other, wherein M is a positive integer. The first gate lines 305 and the second gate lines 306, for example, may be odd-numbered gate lines and even-numbered gate lines respectively. These first gate lines 305 are electrically connected to the first gate driving circuit 301, and these second gate lines 306 are electrically connected to the second gate driving circuit 302, wherein the first gate driving circuit 301 and the second gate The electrode driving circuit 302 is used to enable the first gate line 305 and the second gate line 306 respectively. The first gate driving circuit 301 is electrically connected to the first gate lines 305 ; the second gate driving circuit 302 is electrically connected to the even-numbered gate lines 306 . The liquid crystal display device 30 also includes N data lines 307 arranged along the row direction and parallel to each other, wherein N is a positive integer; the source driver circuit 303 is electrically connected to these data lines 307, and it is used to provide data signals to these data lines 307. In addition, the data lines 307 and the gate lines 305 and 306 are substantially perpendicular to each other.

In this embodiment, the odd-numbered pixels 304 in the same column are electrically connected to the first gate line 305 , and the even-numbered pixels 304 in the same column are electrically connected to the second gate line 306 . In the traditional pixel connection method, all the pixels in the same column are controlled by the same gate driving circuit; that is to say, the pixels in the same column can only be all enabled or disabled at the same time. However, through the pixel layout method provided by the present invention, the odd-numbered and even-numbered pixels in the same column can be enabled at different times, thereby reducing the complexity and cost of circuit design. It should be particularly mentioned that although the example given in this embodiment is to divide the pixels in the same column into odd-numbered row pixels and even-numbered row pixels to control them separately, the present invention is not limited thereto, and it can also be considered in practice It is designed to change the way of distinguishing pixels, for example, two or more adjacent pixels are regarded as a basic control unit.

Please refer to FIG. 4 , which is a block diagram of a driving architecture system of an embodiment of the liquid crystal display device of the present invention. The driving architecture system includes a first input source 401 , a second input source 402 , a timing control integrated circuit 404 , and a source driving circuit 303 . The first input source 401 and the second input source 402 are respectively used to transmit the first data signal (SOURCE_1 input) and the second data signal (SOURCE_2 input) to the timing control integrated circuit 404, and then sequentially transmitted to the source by the timing control integrated circuit 404 The electrode driving circuit 303, wherein the first data signal and the second data signal are signals transmitted to odd-numbered data lines and even-numbered data lines respectively. As shown in Figure 3, when the first gate drive circuit 301 enables the first gate line 305, the source drive circuit 303 will cooperate to transmit the first data signal to the data lines of the odd row; When the driving circuit 302 enables the second gate lines 306 , the source driving circuit 303 will transmit the second data signal to the even-numbered data lines. That is, the first gate line 305 and the second gate line 306 can respectively receive the first data signal and the second data signal during the enabled period.

FIG. 5 is a timing diagram of gate driving signals of an embodiment of the liquid crystal display device of the present invention. Please refer to FIG. 3 and FIG. 5 at the same time. After receiving the start signal YDIO_L, the first gate drive circuit 301 sequentially transmits enable signals GATE1_L, GATE2_L...GATEN_L to the M first gates according to a frequency signal YCLK_L. The gate line 305; after the second gate drive circuit 302 receives the start signal YDIO_R, it sequentially transmits the enabling signals GATE1_R, GATE2_R...GATEN_R to the M second gate lines 306 according to a frequency signal YCLK_R . It must be mentioned that the starting signals of the first gate driving circuit 301 and the second gate driving circuit 302 are not limited to a certain sequence, but depend on the actual design. The transmission sequence of the enable signals is not limited to a certain sequence, but can be determined according to the actual design. For example, the first gate driving circuit 301 and the second gate driving circuit 302 can alternately enable the first gate lines 305 and the second gate lines 306; or first enable the first The gate lines 305 then enable the second gate lines 306 ; or first enable the second gate lines 306 and then enable the odd gate lines 305 . During the period when one of the first gate lines 305 is enabled, the source driver circuit 303 will transmit the first data signal to the enabled first gate line; During an enabled period, the source driving circuit 303 transmits the second data signal to the enabled second gate line 306 . In this way, the odd and even rows of the pixel array will respectively display images corresponding to the first data signal and the second data signal, thereby achieving the purpose of stereoscopic display or dual-view display. In addition, since in this architecture, the first data signal and the second data signal do not need to be stored in a synchronous dynamic memory or a similar memory after receiving them, the use of a synchronous dynamic memory or a similar memory can be omitted, This reduces cost and simplifies system design complexity.

6 is a flowchart of a driving method for a liquid crystal display device of the present invention, wherein the liquid crystal display device includes a pixel array, and the driving method includes: receiving a first data signal (step 60); enabling a first pixel row (step 61 ); transmit the first data signal to the odd number of pixels of the first pixel column (step 62); receive a second data signal (step 63); enable a second pixel column (step 64); and transmit the first pixel column Two data signals are sent to the even pixels of the second pixel column (step 65). By repeatedly performing the above steps, the odd rows of the pixel array can all receive the first data signal, and the even rows can receive the second data signal, so that the odd rows display the first picture corresponding to the first data signal, and the even rows display the first picture corresponding to a The second picture of the second data signal is then projected to the left eye and the right eye respectively through various film materials, so that the effect of stereoscopic display or double-view display can be achieved. Since the above method does not need to store the first data signal and the second data signal in a synchronous dynamic memory or similar memory, the use of synchronous dynamic memory or similar memory can be omitted, thereby reducing cost and simplifying system design complexity.

The gate drive circuits in all the above embodiments can be implemented by existing shift registers or other circuits with similar functions, and will not be repeated here.

Although the present invention has been disclosed above with embodiments, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. modification, so the protection scope of the present invention should be defined by the claims.

Claims (10)

1. A liquid crystal display device, characterized in that the liquid crystal display device comprises: A substrate, the substrate includes a pixel array, the pixel array includes a plurality of pixels arranged in a matrix; a plurality of data lines electrically connected to the pixel array; a plurality of gate lines, which are electrically connected to the pixel array, and the gate lines include a plurality of odd-numbered gate lines and a plurality of even-numbered gate lines, wherein the odd-numbered gate lines One of them is electrically connected to one of the even-numbered gate lines to the pixels in the same row; A first gate drive circuit, which is electrically connected to the odd-numbered gate lines, to enable the odd-numbered gate lines to make the odd-numbered gate lines A first data signal can be received during the enabled period; A second gate driving circuit, which is electrically connected to the even-numbered gate lines, and is used to enable the even-numbered gate lines to make the even-numbered gate lines in one A second data signal can be received during the enabled period; and A source driving circuit is electrically connected to the data line for transmitting data signals. 2 . The liquid crystal display device according to claim 1 , wherein the first gate driving circuit is used to sequentially enable the odd-numbered gate lines. 3 . The liquid crystal display device according to claim 2 , wherein the second gate driving circuit is used to sequentially enable the even-numbered gate lines. 4. The liquid crystal display device as claimed in claim 3, wherein the source driving circuit is used to transmit at least one data signal to the data line. 5. The liquid crystal display device according to claim 3, wherein the first gate driving circuit and the second gate driving circuit alternately enable the odd-numbered gate lines and the Even-numbered gate lines. 6. The liquid crystal display device according to claim 4, wherein the liquid crystal display device further comprises a timing controller for receiving a first data signal and a second data signal, wherein the source drive The circuit is used to respectively transmit the first data signal and the second data signal to the data line. 7 . The liquid crystal display device as claimed in claim 1 , wherein one of the odd-numbered gate lines is electrically connected to the odd-numbered rows of pixels in the same column. 8 . The liquid crystal display device as claimed in claim 1 , wherein one of the plurality of even-numbered gate lines is electrically connected to the pixels in the even-numbered row in the same column. 9. A driving method for a liquid crystal display device, the liquid crystal display device comprising a pixel array, the method comprising: receiving a first data signal; enabling a first pixel column, the first pixel column comprising a plurality of pixels; transmitting the first data signal to a plurality of odd-numbered pixels of the first pixel column; receiving a second data signal; enabling a second pixel column comprising a plurality of pixels; and and transmitting the second data signal to even-numbered pixels of the second pixel row. 10. The driving method of claim 9, wherein receiving the first data signal is prior to receiving the second data signal.

Images