TWI417606B - High picture quality LCD display panel - Google Patents

Description

High-quality LCD panel

The present invention relates to a display panel, and more particularly to a liquid crystal display panel of high picture quality.

Referring to FIG. 1, in a conventional active matrix liquid crystal display (LCD), each of the pixel electrodes 10 of the single gate circuit structure has a thin film transistor (TFT) whose gate is connected to a horizontal sweep. The line 12 is connected, the source is connected to the data line 14 in the vertical direction, the drain is connected to the pixel electrode, and the adjacent thin film transistors have respective connected data lines 14.

The basic operation mode of this conventional circuit architecture is described below. On the same scanning line 12 in the horizontal direction, the gates of all the thin film transistors are connected together, so the applied voltage is interlocked, if it is in a certain scanning line. When a sufficiently large positive voltage is applied to 12, all the thin film transistors on the scanning line are turned on, and the pixel electrodes on the scanning line 12 are connected to the vertical data line 14 through The vertical data line 14 feeds the corresponding video signal to charge the pixel electrode to an appropriate voltage to control the gray scale brightness of the pixel electrode 10. Then apply a large enough negative voltage to turn off the thin film transistor until the next time the signal is rewritten, during which the charge is stored on the liquid crystal capacitor; then the next horizontal scan line 12 is activated and the corresponding video signal is sent. . In this way, the video data of the entire picture is sequentially written, and the signal is rewritten from the first line.

The single gate circuit architecture described above has a relatively high cost for the source wafer because of the excessive number of data lines 14, and in order to reduce the cost, the latter technology proposes a dual gate circuit architecture, that is, As shown in Fig. 2, the adjacent two rows of pixel electrodes 16 share the same data line 20, so that the number of data lines 20 used can be reduced, thereby reducing the manufacturing cost of the source wafer.

The following is a description of the color pixel arrangement of the color filters used in the single- and double-gate circuit architecture, as shown in FIG. 3, in which the area, shape, width and length of each pixel electrode are respectively The area, shape, width and length of the color pixels are the same, and each pixel element corresponds to the arrangement position of each color pixel. A black matrix 17 is arranged beside the color pixel 19, and the ratio of the long side to the wide side of each color pixel 19 is 3 to 1, and the three primary colors, namely red (R), green (G), and blue (B) colors. The positions of the same column are adjacent to each other. If the six color pixels of the same column are a point source unit, the shape of each point source unit is a rectangle with a ratio of long sides to wide sides of 2 to 1. .

Please continue to refer to FIG. 2. In the dual gate circuit architecture, when the scan line 18 is swept from top to bottom, for the pixel electrodes 16 on both sides of the same data line 20, the data line 20 will be left to the left. The pixel electrode 16 is recharged to the right pixel electrode 16, but such a design is difficult to grasp for the picture quality caused by the pixel driving and coupling effects, and it is easy to have the picture quality of the parity line and the crosstalk phenomenon. problem.

Therefore, the present invention has been made in view of the above-mentioned problems, and has proposed a liquid crystal display panel of high picture quality to solve the problems caused by the prior art.

The main object of the present invention is to provide a liquid crystal display panel with high picture quality, which adopts a special design of the aspect ratio of the pixel electrode and the color pixel, which can reduce the number of data lines of the panel and reduce the source. The manufacturing cost of the wafer is reduced, and the crosstalk phenomenon is reduced in the display screen, and at the same time, the aperture ratio is improved, and the operation of the good picture is maintained.

To achieve the above objective, the present invention provides a high-quality liquid crystal display panel comprising a first transparent substrate on which a plurality of parallel scan lines and a plurality of parallel data lines are disposed, and the data lines and the scan lines are perpendicular to each other. And a plurality of pixel units are further arranged between the scan line and the data line, each pixel unit comprises six pixel electrodes, and each pixel electrode is connected with a data line and a scan line, and each of the pixels The pixel electrode has two parallel scanning lines, a long side and a wide side of the data line, and a long side needs to be larger than a wide side; a second transparent substrate on which a plurality of color pixel units and a plurality of black matrices are disposed, each of which The color pixel unit includes six color pixels, and the left and right sides of the color pixel correspond to the wide sides of the pixel electrodes of the first transparent substrate, and the upper and lower sides correspond to the long sides of the pixel electrodes of the first transparent substrate; The liquid crystal layer is disposed between the first transparent substrate and the second transparent substrate.

For a better understanding and understanding of the structural features and the achievable effects of the present invention, please refer to the preferred embodiment and the detailed description.

Although the dual gate circuit of FIG. 2 can reduce the number of data lines and thus the manufacturing cost of the source wafer compared to the single gate circuit structure of FIG. 1, the disadvantage is that the parity line and the crosstalk are replaced. The picture quality problem of the phenomenon. Therefore, in order to solve the above disadvantages while maintaining the above advantages, the present invention proposes a liquid crystal display panel, which will be described below.

Referring to FIG. 4, the first substrate of the present invention, that is, the array substrate, includes a plurality of parallel scan lines 22 and data lines 24, and the data lines 24 and the scan lines 22 are perpendicular to each other, and a plurality of pixel electrodes 26 are further disposed. Each of the pixel electrode units 26 includes six pixel electrodes 28, each of which is connected to a data line 24 and a scan line 22, and each of the pixel electrodes 28 has two parallel scan lines 22 and data. The long side and the wide side of the line 24 are longer than the wide side.

Referring to FIG. 5, each of the pixel electrodes 28 includes a thin film transistor 52 and a pixel capacitor 54. The positions of the two figures correspond to each other, and the source of the thin film transistor 52 is connected to a data line 24. The gate is connected to a scan line 22, and the drain is connected to a pixel capacitor 54. The pixel capacitor 54 receives a common signal, and the data line transmits a data signal to the correspondingly connected thin film transistor 52. The aiming line 22 can control the switching state of the thin film transistor 52, so that the transistor 52 controls the charging and discharging of the pixel capacitor 54 according to the data signal, thereby inverting the polarity, and controlling the gray scale brightness exhibited by the sub-pixel 28.

Please compare the single gate circuit structure of FIG. 1 and FIG. 4 of the prior art, wherein the long side and the wide side of the pixel electrode 10 are parallel to the data line 14 and the scan line 12, respectively, and in the fourth picture, the pixel is Since the long side and the wide side of the electrode 28 are parallel to the scan line 22 and the data line 24, respectively, the data line 24 of the fourth embodiment of the present invention has a lower density than that of the single gate of FIG. 1 under the same display screen area. The circuit structure is low, so that the manufacturing cost of the source wafer can be reduced. In addition, the circuit structure of the present invention is a single gate, and the pixel of the adjacent two rows does not have a shared data line as shown in FIG. The present invention alleviates the picture quality problem of the parity line and crosstalk phenomenon.

Please refer to FIG. 4 and FIG. 6 at the same time. The length and width ratio and position distribution of the pixel electrode 28 are described below. Each of the pixel electrode units 26 includes six pixel electrodes 28 and is in the same row or in the same column. The element electrode unit 26 shares the same data line 24 or the same scanning line 22. Therefore, only one pixel electrode unit 26 is taken as an example to introduce the pixel electrode 28 therein.

The plurality of scan lines 22 include a first scan line 30 and a second scan line 32, and the data line 24 includes a first data line 34, a second data line 36 and a third data line 38. First, the third data lines 34, 38 are located on opposite sides of the second data line 36. Each of the pixel electrode units 26 includes a first, second, third, fourth, fifth, and sixth pixel electrodes 40, 42, 44, 46, 48, 50. The first pixel electrode 40 is connected to the first scan line 30 and the first data line 34, and the second pixel electrode 42 is connected to the second scan line 32 and the first data line 34, and to the first pixel electrode 40. Located on the same side of the first data line 34, that is, the left side; the third pixel electrode is connected to the first scan line 30 and the second data line 36, and the first and third pixel electrodes 40 and 44 are respectively located on the first data line. The opposite sides of the 34, that is, the left and right sides; the fourth pixel electrode 46 is connected to the second scan line 32 and the second data line 36, and is located on the same side of the second data line 36 as the third pixel electrode 44. The fifth pixel electrode 48 is connected to the first scan line 30 and the third data line 38. The third and fifth pixel electrodes 44 and 48 are respectively located on opposite sides of the second data line 36, that is, The left and right sides; the sixth pixel electrode 50 is connected to the second scan line 32 and the third data line 38, and is located on the same side of the third data line 38 as the fifth pixel electrode 38, that is, on the left side.

Please refer to FIG. 7 at the same time, each of the pixel electrodes 28 is rectangular, and the optimal ratio of the long side a to the wide side b is 4 to 3, and the double gate circuit structure of the second figure in the prior art. In comparison, since the aperture ratio of each pixel electrode 16 in the dual gate circuit structure is affected by the interval between the two scan lines 18 and the two scan lines 18 and one data line 20, the aperture ratio is higher than that of the single gate circuit. The architecture has been reduced. In the present invention, the aperture ratio of each pixel electrode 28 is affected by only one scanning line 22 and one data line 24 by using a specific aspect ratio of the pixel electrode, so the aperture ratio of the present invention is lower than that of the second figure. The double gate circuit architecture has been improved by 3 to 4%.

The three-dimensional exploded view of the display panel of the present invention will be described below. The following is an example of a pixel element unit and a color pixel unit. Please refer to FIG. The present invention includes a first substrate 200, a second substrate 400, and a liquid crystal layer 500 disposed between the two substrates 200, 400. The first substrate 200 is an array substrate, and includes a first glass substrate 100 on which a first pixel electrode 40, a second pixel electrode 42, a third pixel electrode 44, and a fourth pixel electrode 46 are disposed. The fifth pixel electrode 48, the sixth pixel electrode 50, and the second substrate 400, that is, the color filter substrate, includes a first glass substrate 300 on which the first color pixel 41 and the second color pixel 43 are disposed. a third color pixel 45, a fourth color pixel 47, a fifth color pixel 49, and a sixth color pixel 51, wherein the first pixel electrode 40, the second pixel electrode 42, and the third pixel electrode 44. The fourth pixel electrode 46, the fifth pixel electrode 48, and the sixth pixel electrode 50 are respectively combined with the first color pixel 41, the second color pixel 43, the third color pixel 45, and the fourth color pixel. 47. The fifth color pixel 49 and the sixth color pixel 51 are in a relationship with each other. The left and right sides of the color pixel correspond to the short side of the pixel electrode parallel to the data line 24, and the upper and lower sides of the color pixel correspond to the picture. The long side of the element electrode parallel to the scanning line 22.

The color pixel arrangement on the color filter substrate of the prior art is as shown in FIG. 3, and the ratio of the long side to the wide side of the color pixel 19 is 3 to 1, and the three primary colors, namely, red (R), green ( G) and blue (B) colors are located in the same column and adjacent to each other. If the six color pixels in the same column are a point source unit, the shape of each point source unit is a long side and a width. The side ratio is a rectangle of 2 to 1. However, the three primary color distributions of the present invention are different, as shown in FIG. 9 and FIG. 10, and FIG. 9 and FIG. 10 are respectively a schematic diagram of the area and color distribution of the color pixels of the color filter substrate, and the color filter substrate. A plurality of color pixels 41, 43, 45, 47, 49, 51 and a plurality of complex black matrices 31 are provided. Now, in the case of a color pixel unit 25, the first, second, and third color pixels 41, 43, and 45 are red, blue, and green pixels, respectively, and the shapes of the three are """, and The fourth, fifth, and sixth color pixels 47, 49, and 51 are red, blue, and green pixels, respectively, and the shapes of the three are """, due to the area, shape, and width of each color pixel. The length is the same as the area, shape, width and length of each pixel electrode. Therefore, if the color pixel unit 25 is a point light source unit, the ratio of the long side A to the wide side B is also 2 ratio. 1. Under such a design, since the human vision is invisible, the picture displayed by the display panel is not much different from the picture displayed by the rectangular light source unit in the prior art, and there is no problem of the picture being burrs.

The color pixel color distribution described above is the first embodiment, and there is a second embodiment. As shown in FIG. 11, the first, second, and third color pixels 41, 43, and 45 are respectively blue and red. , green pixels, and the fourth, fifth, and sixth color pixels 47, 49, 51 are blue, red, and green pixels, respectively. In a third embodiment, as shown in FIG. 12, the first, second, and third color pixels 41, 43, and 45 are green, blue, and red pixels, respectively, and the fourth, fifth, and sixth color pixels 47, 49, 51 are green, blue, and red pixels, respectively. In the fourth embodiment, as shown in FIG. 13, the first, second, and third color pixels 41, 43, and 45 are red, green, and blue pixels, respectively, and the fourth, fifth, and sixth color pixels 47. 49, 51 are red, green, and blue pixels, respectively. In a fifth embodiment, as shown in FIG. 14, the first, second, and third color pixels 41, 43, and 45 are blue, green, and red pixels, respectively, and the fourth, fifth, and sixth color pixels 47, 49, 51 are blue, green, and red pixels, respectively. In the sixth embodiment, as shown in FIG. 15, the first, second, and third color pixels 41, 43, and 45 are green, red, and blue pixels, respectively, and the fourth, fifth, and sixth color pixels 47. 49, 51 are green, red, and blue pixels, respectively.

Please refer to FIG. 4 and FIG. 16 at the same time. The following describes the operation process of each pixel electrode 28, scan line 22 and data line 24 in steps. In FIG. 4, each adjacent data line 24 is The first and second data signals of opposite polarity are respectively transmitted, and the waveform diagram is as shown in FIG. 16. When the voltage of the first data signal is high level output, the voltage of the second data signal is low level output. However, when the voltage of the first data signal is low level output, the voltage of the second data signal is a high level output. In other words, the first and second data lines 34 and 36 respectively transmit the first and second data signals, and the third data line 38 and the data line 24 on the right side thereof respectively transmit the first and second data signals, respectively. The signals transmitted by the data line 24 mentioned are analogized in the manner described above.

First, each scan line 22 controls the corresponding connected pixel electrode 28 to receive the first data signal or the second data signal, and then each pixel electrode 28 can be displayed according to the first data signal or the second data signal. Grayscale brightness. However, such a signal transmission method can cause the polarity conversion mode of the display panel to be reversed, and since the startup mode of the scanning line 22 is sequentially started from the top, as shown in FIG. 17(a), when When the scan line 30 is activated, the polarity of the pixel electrodes 28 connected to the first scan line 30 from left to right is positive, negative, ..., positive, negative, and positive. When the second scan line 32 is activated, the first scan line 30 is turned off. At this time, as shown in FIG. 17(b), the pixel electrodes 28 connected to the second scan line 32 are left to right. The polarity is negative, positive, ..., negative, positive, negative. Therefore, the polarity conversion mode of the liquid crystal display panel of the present invention is dot inversion.

In summary, the present invention can reduce the number of data lines used, thereby reducing the manufacturing cost of the source wafer and reducing the crosstalk phenomenon in the display screen.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that the shapes, structures, features, and spirits described in the claims of the present invention are equally varied and modified. All should be included in the scope of the patent application of the present invention.

100. . . First glass substrate

200. . . First substrate

300. . . Second glass substrate

400. . . Second substrate

500. . . Liquid crystal layer

10. . . Pixel electrode

12. . . Sweep line

14. . . Data line

16. . . Pixel electrode

17. . . Black matrix

18. . . Sweep line

19. . . Color pixel

20. . . Data line

twenty two. . . Sweep line

twenty four. . . Data line

25. . . Color pixel unit

26. . . Pixel unit

28. . . Pixel electrode

30. . . First scan line

31. . . Black matrix

32. . . Second scan line

34. . . First data line

36. . . Second data line

38. . . Third data line

40. . . First pixel electrode

41. . . First color pixel

42. . . Second pixel electrode

43. . . Second color pixel

44. . . Third pixel electrode

45. . . Third color pixel

46. . . Fourth pixel electrode

47. . . Fourth color pixel

48. . . Fifth pixel electrode

49. . . Fifth color pixel

50. . . Sixth pixel electrode

51. . . Sixth color pixel

52. . . Thin film transistor

54. . . Pixel capacitor

FIG. 1 is a schematic diagram of an array substrate of a prior art single gate structure.

2 is a schematic diagram of an array substrate of a prior art dual gate structure.

Fig. 3 is a schematic view showing the arrangement of color pixels of the prior art color filter.

Figure 4 is a schematic view of the array substrate of the present invention.

Fig. 5 is a circuit diagram of the array substrate of the present invention.

Figure 6 is a schematic view of a pixel unit of the present invention.

Figure 7 is a schematic view showing the area of a pixel unit of the present invention.

Fig. 8 is an exploded perspective view showing the liquid crystal display panel of the present invention.

Figure 9 is a schematic view showing the area of a color pixel unit of the present invention.

Figure 10 is a schematic view showing the first embodiment of the color distribution of the color pixel unit of the present invention.

Figure 11 is a schematic view showing a second embodiment of the color distribution of the color pixel unit of the present invention.

Figure 12 is a schematic view showing a third embodiment of the color distribution of the color pixel unit of the present invention.

Figure 13 is a schematic view showing a fourth embodiment of the color distribution of the color pixel unit of the present invention.

Figure 14 is a schematic view showing a fifth embodiment of the color distribution of the color pixel unit of the present invention.

Figure 15 is a schematic view showing a sixth embodiment of the color distribution of the color pixel unit of the present invention.

Figure 16 is a waveform diagram of the first and second data signals of the present invention.

17(a) to 17(b) are schematic diagrams showing the polarity conversion of the liquid crystal display panel of the present invention.

100. . . First glass substrate

200. . . First substrate

300. . . Second glass substrate

400. . . Second substrate

500. . . Liquid crystal layer

twenty two. . . Sweep line

twenty four. . . Data line

40. . . First pixel electrode

41. . . First color pixel

42. . . Second pixel electrode

43. . . Second color pixel

44. . . Third pixel electrode

45. . . Third color pixel

46. . . Fourth pixel electrode

47. . . Fourth color pixel

48. . . Fifth pixel electrode

49. . . Fifth color pixel

50. . . Sixth pixel electrode

51. . . Sixth color pixel

Claims (16)

A high-quality liquid crystal display panel comprising: a first transparent substrate on which a plurality of parallel scan lines and a plurality of parallel data lines are disposed, the data lines and the scan lines being perpendicular to each other; a plurality of pixels An electrode unit is disposed on the first transparent substrate, each of the pixel electrode units includes six pixel electrodes, and each of the pixel electrodes is connected to the data line and a scan line, and each of the pixels The pixel electrode has two parallel scanning lines, a long side and a wide side of the data line, and the ratio of the long side to the wide side is 4 to 3. A second transparent substrate is provided with a plurality of color pixels. a unit and a complex black matrix, each of the color pixel units comprising six color pixels, each of the color pixels being a rectangle having opposite sides of the pixel electrode of the first transparent substrate on the left and right sides thereof The long sides of the pixel electrodes corresponding to the first transparent substrate are disposed on both sides; and a liquid crystal layer is disposed between the first transparent substrate and the second transparent substrate. The high-quality liquid crystal display panel of claim 1, wherein each of the color pixels of the second transparent substrate has a rectangular shape, and a ratio of lengths of the left and right sides to the length of the upper and lower sides is 3 to 4. The high-definition liquid crystal display panel of the first aspect of the invention, wherein the scan lines of the first transparent substrate comprise a first scan line and a second scan line, wherein the data lines comprise a The first data line, the second data line and the third data line, the first and third data lines are located on opposite sides of the second data line. The high-definition liquid crystal display panel of claim 3, wherein each of the pixel electrode units comprises: a first pixel electrode connected to the first scan line and the first data line; a second pixel electrode connected to the second scan line and the first data line, and The first sub-pixel is located on the same side of the first data line; a third pixel electrode is connected to the first scan line and the second data line, and the first and third pixel electrodes are respectively located a different fourth side of the first data line; a fourth pixel electrode connected to the second scan line and the second data line, and the third sub-pixel is located on the second data line a fifth pixel electrode connected to the first scan line and the third data line, wherein the third and fifth sub-pixels are respectively located on opposite sides of the second data line; The six-pixel element is connected to the second scan line and the third data line, and is located on the same side of the third data line as the fifth sub-pixel. The high-quality liquid crystal display panel of claim 4, wherein each of the color pixel units of the second transparent substrate comprises a first color pixel, a second color pixel, and a third Color pixel, a fourth color pixel, a fifth color pixel, and a sixth color pixel. The high-definition liquid crystal display panel of claim 5, wherein the first color pixel, the second color pixel, the third color pixel, the fourth color of the second transparent substrate a pixel, the fifth color pixel, and the sixth color pixel respectively corresponding to the first pixel electrode, the second pixel electrode, the third pixel electrode, and the fourth picture of the first transparent substrate a pixel electrode, the fifth pixel electrode, and the sixth pixel electrode. The high-quality liquid crystal display panel according to claim 5, wherein the first and fourth color pixels are blue pixels, and the second and fifth color pixels are green pixels. The third and sixth color pixels are red pixels. The high-quality liquid crystal display panel according to claim 5, wherein the first and fourth color pixels are red pixels, and the second and fifth color pixels are green pixels. The third and sixth color pixels are blue pixels. The high-quality liquid crystal display panel according to claim 5, wherein the first and fourth color pixels are red pixels, and the second and fifth color pixels are blue pixels. The third and sixth color pixels are green pixels. The high-quality liquid crystal display panel of claim 5, wherein the first and fourth color pixels are green pixels, and the second and fifth color pixels are red pixels. The third and sixth color pixels are blue pixels. The high-definition liquid crystal display panel according to claim 5, wherein the first and fourth color pixels are green pixels, and the second and fifth color pixels are blue pixels. The third and sixth color pixels are red pixels. The high-quality liquid crystal display panel of claim 5, wherein the first and fourth color pixels are blue pixels, and the second and fifth color pixels are red pixels. The third and sixth color pixels are green pixels. The high-definition liquid crystal display panel of claim 1, wherein each of the pixel electrodes comprises: a thin film transistor having a source connected to the data line and a gate connected to the scan line. And a pixel capacitor connected to the drain of the thin film transistor, wherein the data line transmits a data signal to the corresponding connected transistor, and the scan line transmits a scan signal to control the thin film The switching state of the crystal causes the transistor to control the charging and discharging of the pixel capacitor according to the data signal, and performs polarity inversion. The high-definition liquid crystal display panel of claim 13, wherein the polarity switching manner of the liquid crystal pixel capacitors is dot inversion. The high-definition liquid crystal display panel of claim 1, wherein each of the two adjacent data lines respectively transmits the first and second data signals of opposite polarities. The driving method of the liquid crystal display panel includes the following steps: each of the scanning lines respectively controls the corresponding pixel electrode to receive the first data signal or the second data signal; and each of the pixel electrodes is configured according to The first data signal or the second data signal controls the gray scale brightness displayed. The high-definition liquid crystal display panel of claim 1, wherein the first and second transparent substrates are glass substrates.