LIQUID CRYSTAL DISPLAY DEVICE

• US 20170285418A1
• Filed: 03/30/2016
• Published: 10/05/2017
• Est. Priority Date: 03/30/2016
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Inventors: TANAKA, Katuji, KAJITA, Daisuke
• Granted Patent: US 9,841,642 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line

Abstract

Embodiments of a Liquid Crystal Display (LCD) device are disclosed. The LCD includes a backlight to illuminate a display panel with a plurality of sub-pixels, which include a first sub-pixel having a first color filter, a second sub-pixel having a second color filter having a different color from the first color filter, and a third sub-pixel having a third color filter having a different color from the first color filter and the second color filter.

The LCD display panel includes a plurality of drain lines formed between the plurality of sub-pixels, the plurality of drain lines arranged as a first type of drain line set and a second type of drain line set, where the first type of drain line set includes only a single drain line positioned between two adjacent sub-pixels, and the second type of drain line set includes only two drain lines positioned between two adjacent sub-pixels.

Claims

1. A Liquid Crystal Display (LCD) device, comprising:

a display panel; and

a backlight to illuminate the display panel;

wherein the display panel includes;

a plurality of gate lines extending in a first direction;

a plurality of drain lines extending in a second direction; and

a plurality of sub-pixels, arranged in a matrix,

wherein the plurality of sub-pixels include a first sub-pixel having a first color filter, a second sub-pixel having a second color filter having a different color from the first color filter, and a third sub-pixel having a third color filter having a different color from the first color filter and the second color filter,

a plurality of drain lines are formed between the plurality of sub-pixels, the plurality of drain lines arranged as a first type of drain line set and a second type of drain line set, wherein the first type of drain line set includes only a single drain line positioned between two adjacent sub-pixels, and the second type of drain line set includes only two drain lines positioned between two adjacent sub-pixels,

an arrangement of the plurality of drain lines includes a sequenced drain line order of the first type of drain line set, the second type of drain line set, and a non-drain line region, the non-drain line region being a region where no drain lines are formed between two adjacent sub-pixels, and

the sequenced drain line order has the non-drain line region formed between two of the first type of drain line sets.

2. The LCD device of claim 1, further comprising an arrangement of the plurality of sub-pixels arranged in plurality of rows and columns, wherein the arrangement of the plurality of sub-pixels in a given row among the plurality of rows has a sequenced order of the first sub-pixel adjacent to the second sub-pixel and the second sub-pixel adjacent to the third sub-pixel,

wherein the first sub-pixel is interposed between the first type of drain line set and the second type of drain line set, the second sub-pixel is interposed between the first type of drain line set and a non-drain line region,

the third sub-pixel is interposed between the second type of drain line set and the non-drain line region, and

each sub-pixel in a given column among the plurality of columns includes a color filter, wherein the color filter for each of the sub-pixels in the given column has the same color.

4. The LCD device of claim 1, wherein the sequenced drain line order is a repetition of the first type of drain line set, the second type of drain line set, and the non-drain line region.

7. The LCD device of claim 1, wherein the first sub-pixel is a red sub-pixel having a red color filter, the second sub-pixel is a blue sub-pixel having a blue color filter, and the third sub-pixel is a green sub-pixel having a green color filter.

8. The LCD device of claim 7, further comprising an arrangement of the plurality of sub-pixels arranged in plurality of rows and columns, wherein the arrangement of the plurality of sub-pixels in a given row among the plurality of rows includes a repetitious sequenced order of the red sub-pixel, the green sub-pixel, and the blue sub-pixel,

wherein the first type of drain line set is formed between the red sub-pixel and the green sub-pixel, a non-drain line region is formed between the green sub-pixel and the blue sub-pixel, and the second type of drain line set is formed between the blue sub-pixel and the red sub-pixel,

each sub-pixel in a given column among the plurality of columns includes a color filter, wherein the color filter for each of the sub-pixels in the given column has the same color.

9. The LCD device of claim 7, further comprising an arrangement of the plurality of sub-pixels arranged in a plurality of rows and columns, wherein the arrangement of the plurality of sub-pixels in a given row among the plurality of rows includes a repetitious sequenced order of the red sub-pixel, the green sub-pixel, and the blue sub-pixel,

wherein the first type of drain line set is formed between the blue sub-pixel and the green sub-pixel, a non-drain line region is formed between the green sub-pixel and the red sub-pixel, and the second type of drain line set is formed between the blue sub-pixel and the red sub-pixel,

each sub-pixel in a given column among the plurality of columns includes a color filter, wherein the color filter for each of the sub-pixels in the given column has the same color.

10. The LCD device of claim 7, further comprising an arrangement of the plurality of sub-pixels arranged in plurality of rows and columns, wherein the arrangement of the plurality of sub-pixels is a repetitious sequenced order of the plurality of sub-pixels such that the red sub-pixel and the blue sub-pixel are separated by the second type of drain line set in a given row among the plurality of rows.

11. The LCD device of claim 1, further comprising an arrangement of the plurality of sub-pixels arranged in plurality of rows and columns and includes a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of third sub-pixels,

wherein the arrangement of the plurality of sub-pixels includes a sequenced order in a given row among the plurality of rows having a repetitious appearance of the first sub-pixel in which two first sub-pixels are arranged adjacent to each other, a repetitious appearance of the second sub-pixel in which two second sub-pixels are arranged adjacent to each other, and a singular appearance of the third sub-pixel, the third sub-pixel is adjacent to only the first sub-pixel and the second sub-pixel, and

each sub-pixel in a given column among the plurality of columns includes a color filter, wherein the color filter for each of the sub-pixels in the given column has the same color.

12. The LCD device of claim 11, wherein the repetitious appearance of the first sub-pixel and the repetitious appearance of the second sub-pixel in a given row among the plurality of rows are separated from each other by the first type of drain line set, the singular appearance of the third sub-pixel, and the second type of drain line set.

13. The LCD device of claim 11, wherein the non-drain line region is between the repetitious appearance of the first sub-pixel and formed between the repetitious appearance of the second sub-pixel.

14. The LCD device of claim 11, wherein the first sub-pixel is a green sub-pixel having a green color filter, and the second sub-pixel and third sub-pixel are non-green sub-pixels having a non-green color filter, and

wherein the second type of drain line set is formed between the second sub-pixel and the third sub-pixel.

15. The LCD device of claim 11, wherein the first sub-pixel is a green sub-pixel having a green color filter, and the second sub-pixel and third sub-pixel are non-green sub-pixels having a non-green color filter, and

wherein the first type of drain line set is formed between the first sub-pixel and either the second sub-pixel or the third sub-pixel.

16. The LCD device of claim 1, further comprising:

a first substrate on a back surface side of the display panel; and

a second substrate on a display surface side of the display panel, the first substrate and the second substrate being opposed to each other,

wherein the plurality of gate lines and the plurality of drain lines are formed on the first substrate, and the first color filter, the second color filter, and the third color filter are formed on the second substrate.

17. The LCD device of claim 16, wherein the second substrate includes:

a plurality of color filters including the first color filter, the second color filter, and the third color filter formed thereon, and arranged so as to correspond to each of the plurality of sub-pixels; and

a light shielding portion formed thereon, to block light from transmitting therethrough, and formed around each of the plurality of color filters,

wherein a width of the light shielding portion overlapping the first type of drain line set is smaller than a width of the light shielding portion overlapping the second type of drain line set.

18. The LCD device of claim 16,

wherein the second substrate includes:

a plurality of color filters including the first color filter, the second color filter, and the third color filter formed thereon, and arranged so as to correspond to each of the plurality of sub-pixels; and

a light shielding portion formed thereon, to block light from transmitting therethrough, and formed around each of the plurality of color filters,

wherein a width of the light shielding portion overlapping the non-drain line region is smaller than a width of the light shielding portion overlapping the first type of drain line set.

19. The LCD device of claim 16,

wherein the second substrate includes:

a plurality of color filters including the first color filter, the second color filter, and the third color filter formed thereon, and arranged so as to correspond to each of the plurality of sub-pixels; and

a light shielding portion formed thereon, to block light from transmitting therethrough, and formed around each of the plurality of color filters, and

wherein the light shielding portion overlapping the non-drain line region forms two adjacent sub-pixels among the plurality of sub-pixels corresponding color filters to be directly adjacent to each other.

3. (canceled)

5. (canceled)

6. (canceled)

20. A Liquid Crystal Display (LCD) device, comprising:

a display panel; and

a backlight to illuminate the display panel;

wherein the display panel includes;

a plurality of gate lines extending in a first direction;

a plurality of drain lines extending in a second direction; and

a plurality of sub-pixels, arranged in a matrix,

wherein the plurality of sub-pixels include a first sub-pixel having a first color filter, a second sub-pixel having a second color filter having a different color from the first color filter, and a third sub-pixel having a third color filter having a different color from the first color filter and the second color filter,

a plurality of drain lines are formed between the plurality of sub-pixels, the plurality of drain lines arranged as a first type of drain line set and a second type of drain line set, wherein the first type of drain line set includes only a single drain line positioned between two adjacent sub-pixels, and the second type of drain line set includes only two drain lines positioned between two adjacent sub-pixels,

an arrangement of the plurality of drain lines includes a sequenced drain line order of the first type of drain line set, the second type of drain line set, and a non-drain line region, the non-drain line region being a region where no drain lines is formed between two adjacent sub-pixels, and

the sequenced drain line order has the non-drain line region formed between two of the second type of drain line sets.

21. The LCD device of claim 20, further comprising an arrangement of the plurality of sub-pixels arranged in plurality of rows and columns, wherein the arrangement of the plurality of sub-pixels in a given row among the plurality of rows has a sequenced order of the first sub-pixel adjacent to the second sub-pixel and the second sub-pixel adjacent to the third sub-pixel,

wherein the first sub-pixel is interposed between the first type of drain line set and the second type of drain line set, the second sub-pixel is interposed between the first type of drain line set and a non-drain line region,

the third sub-pixel is interposed between the second type of drain line set and the non-drain line region, and

each sub-pixel in a given column among the plurality of columns includes a color filter, wherein the color filter for each of the sub-pixels in the given column has the same color.

22. A Liquid Crystal Display (LCD) device, comprising:

a display panel;

a first substrate on a back surface side of the display panel;

a second substrate on a display surface side of the display panel, the first substrate and the second substrate being opposed to each other; and

a backlight to illuminate the display panel;

wherein the display panel includes;

a plurality of gate lines extending in a first direction;

a plurality of drain lines extending in a second direction; and

a plurality of sub-pixels, arranged in a matrix,

wherein the plurality of sub-pixels include a first sub-pixel having a first color filter, a second sub-pixel having a second color filter having a different color from the first color filter, and a third sub-pixel having a third color filter having a different color from the first color filter and the second color filter;

a plurality of drain lines formed between the plurality of sub-pixels, the plurality of drain lines arranged as a first type of drain line set and a second type of drain line set, wherein the first type of drain line set includes only a single drain line positioned between two adjacent sub-pixels, and the second type of drain line set includes only two drain lines positioned between two adjacent sub-pixels, and a non-drain line region, the non-drain line region being a region where no drain line is formed,

the second substrate includes;

a plurality of color filters including the first color filter, the second color filter, and the third color filter formed thereon, and arranged so as to correspond to each of the plurality of sub-pixels, and

a light shielding portion formed thereon, to block light from transmitting therethrough, and formed around each of the plurality of color filters, and

the light shielding portion overlapping the non-drain line region forms two adjacent sub-pixels among the plurality of sub-pixels corresponding color filters to be directly adjacent to each other.

23. The LCD device of claim 22, further comprising an arrangement of the plurality of sub-pixels arranged in plurality of rows and columns, wherein the arrangement of the plurality of sub-pixels in a given row among the plurality of rows has a sequenced order of the first sub-pixel adjacent to the second sub-pixel and the second sub-pixel adjacent to the third sub-pixel,

wherein the first sub-pixel is interposed between the first type of drain line set and the second type of drain line set, the second sub-pixel is interposed between the first type of drain line set and a non-drain line region,

the third sub-pixel being interposed between the second type of drain line set and the non-drain line region, and

wherein each sub-pixel in a given column among the plurality of columns includes a color filter, wherein the color filter for each of the sub-pixels in the given column has the same color.