Display device

• US 9,287,296 B2
• Filed: 03/06/2014
• Issued: 03/15/2016
• Est. Priority Date: 08/29/2013
• 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: Hirata, Masafumi, Takeda, Yugo, Funahashi, Yuuta
• Primary Examiner(s): Kim, Dennis Y
• Application Number:
  US14/199,529
• Publication Number:
  US 20150060858A1
• Time in Patent Office: 740 Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52

Abstract

Provided is a display device, in which: a plurality of spacers placed between a first substrate and a second substrate include a first spacer placed between a first thin film transistor and a second thin film transistor and a second spacer placed between the first thin film transistor and a third thin film transistor; and a distance between a center of the first spacer and a center of a line width of a first data line is smaller than a distance between a center of the second spacer and a center of a line width of a second data line.

Claims

1. A display device, comprising:

a first substrate;

a second substrate opposed to the first substrate;

a plurality of spacers placed between the first substrate and the second substrate, the plurality of spacers being formed on the second substrate;

a plurality of data lines extending in a column direction, which are formed on the first substrate;

a plurality of gate lines extending in a row direction, which are formed on the first substrate;

a plurality of thin film transistors each formed on the first substrate near an intersection of each of the plurality of data lines and each of the plurality of gate lines;

a plurality of pixels formed on the first substrate and arranged in a matrix shape, the plurality of pixels each being defined by adjacent two of the plurality of data lines and adjacent two of the plurality of gate lines; and

a plurality of light transmission portions formed on the second substrate, so as to be opposed to the plurality of pixels on a one-to-one basis,

the plurality of pixels comprising;

a first pixel opposed to a first light transmission portion for transmitting light in a first color;

a second pixel opposed to a second light transmission portion for transmitting light in a second color that is higher in visibility than the light in the first color; and

a third pixel opposed to a third light transmission portion for transmitting light in a third color that is higher in visibility than the light in the first color,

the plurality of data lines comprising;

a first data line placed between the first pixel and the second pixel that are adjacent to each other; and

a second data line placed between the first pixel and the third pixel that are adjacent to each other,

the plurality of thin film transistors comprising;

a first thin film transistor formed within an area of the first pixel;

a second thin film transistor formed within an area of the second pixel; and

a third thin film transistor formed within an area of the third pixel, the plurality of spacers comprising;

a first spacer placed between the first thin film transistor and the second thin film transistor that are adjacent to each other in the row direction; and

a second spacer placed between the first thin film transistor and the third thin film transistor that are adjacent to each other in the row direction,

wherein a distance between a center of the first spacer and a center of a line width of the first data line is smaller than a distance between a center of the second spacer and a center of a line width of the second data line.

2. The display device according to claim 1, further comprising a liquid crystal layer between the first substrate and the second substrate, wherein:

the first substrate further comprises an alignment layer; and

the alignment layer is subjected to a light alignment process.

3. The display device according to claim 1, further comprising a plurality of seatings for supporting the plurality of spacers, the plurality of seatings being formed in the first substrate, wherein

the plurality of seatings include a first seating and a second seating, the first spacer being supported by the first seating and the second spacer being supported by the second seating.

4. A display device, comprising:

a first substrate;

a second substrate opposed to the first substrate;

a plurality of spacers placed between the first substrate and the second substrate;

a plurality of seatings for supporting the plurality of spacers, which are formed on the first substrate;

a plurality of data lines extending in a column direction, which are formed on the first substrate;

a plurality of gate lines extending in a row direction, which are formed on the first substrate;

a plurality of thin film transistors each formed on the first substrate near an intersection of each of the plurality of data lines and each of the plurality of gate lines;

a plurality of pixels formed on the first substrate and arranged in a matrix shape, the plurality of pixels each being defined by adjacent two of the plurality of data lines and adjacent two of the plurality of gate lines; and

a plurality of light transmission portions formed on the second substrate, so as to be opposed to the plurality of pixels on a one-to-one basis,

the plurality of pixels comprising;

a first pixel opposed to a first light transmission portion for transmitting light in a first color;

a second pixel opposed to a second light transmission portion for transmitting light in a second color that is higher in visibility than the light in the first color; and

a third pixel opposed to a third light transmission portion for transmitting light in a third color that is higher in visibility than the light in the first color,

the plurality of data lines comprising;

a first data line placed between the first pixel and the second pixel that are adjacent to each other; and

a second data line placed between the first pixel and the third pixel that are adjacent to each other,

the plurality of thin film transistors comprising;

a first thin film transistor formed within an area of the first pixel;

a second thin film transistor formed within an area of the second pixel; and

a third thin film transistor formed within an area of the third pixel,

the plurality of seatings comprising;

a first seating placed between the first thin film transistor and the second thin film transistor that are adjacent to each other in the row direction; and

a second seating placed between the first thin film transistor and the third thin film transistor that are adjacent to each other in the row direction,

the plurality of spacers comprising;

a first spacer placed on the first seating; and

a second spacer placed on the second seating,

wherein a center of the first spacer is shifted toward the first thin film transistor side from a center of the first seating, and a center of the second spacer is shifted toward the first thin film transistor side from a center of the second seating.

5. The display device according to claim 4, wherein a distance between the center of the first spacer and the center of the first seating is substantially the same as a distance between the center of the second spacer and the center of the second seating.

6. A display device, comprising:

a first substrate;

a second substrate opposed to the first substrate;

a plurality of spacers placed between the first substrate and the second substrate;

a plurality of data lines extending in a column direction, which are formed on the first substrate;

a plurality of gate lines extending in a row direction, which are formed on the first substrate;

a plurality of thin film transistors each formed on the first substrate near an intersection of each of the plurality of data lines and each of the plurality of gate lines;

a plurality of pixels formed on the first substrate and arranged in a matrix shape, the plurality of pixels each being defined by adjacent two of the plurality of data lines and adjacent two of the plurality of gate lines; and

a plurality of light transmission portions formed on the second substrate, so as to be opposed to the plurality of pixels on a one-to-one basis,

the plurality of pixels comprising;

a blue pixel opposed to a light transmission portion for transmitting blue light;

a green pixel opposed to a light transmission portion for transmitting green light; and

a red pixel opposed to a light transmission portion for transmitting red light,

the plurality of thin film transistors comprising;

a first thin film transistor formed within an area of the blue pixel;

a second thin film transistor formed within an area of the green pixel; and

a third thin film transistor formed within an area of the red pixel,

the plurality of pixels defining a plurality of pixel sets that are arranged in a matrix, each of the plurality of pixel sets comprising one red pixel, one green pixel and one blue pixel arranged in this order in a row direction,

wherein, for each of the plurality of pixel sets, no spacer is present between the third thin film transistor in one of said pixel sets and the second thin film transistor in said one pixel set, a first spacer is present between the second thin film transistor in said one pixel set and the first thin film transistor in said one pixel set, and a second spacer is present between the first thin film transistor in said one pixel set and the third thin film transistor in a pixel set adjacent in the row direction to said one pixel set.

7. A display device, comprising:

a first substrate;

a second substrate opposed to the first substrate; and

a plurality of spacers placed between the first substrate and the second substrate, the plurality of spacers being formed on the second substrate,

the second substrate comprising;

a blue light transmission portion formed thereon, for transmitting blue light;

a green light transmission portion formed thereon, for transmitting green light; and

a red light transmission portion formed thereon, for transmitting red light,

which are placed in a matrix shape and each of which is surrounded by a light shielding layer and has an area for transmitting light, the area having substantially a rectangle shape formed of short sides and long sides,

the plurality of spacers comprising;

a first spacer placed near a boundary between the blue light transmission portion and the green light transmission portion and near a short side of the light transmission portion; and

a second spacer placed near a boundary between the blue light transmission portion and the red light transmission portion and near the short side of the light transmission portion,

wherein a distance between a center of a short side of the blue light transmission portion and a center of the second spacer is smaller than a distance between a center of a short side of the green light transmission portion and a center of the first spacer.

8. A display device, comprising:

a first substrate;

a second substrate opposed to the first substrate; and

a plurality of spacers placed between the first substrate and the second substrate, the plurality of spacers being formed on the second substrate,

the second substrate comprising;

a blue light transmission portion formed thereon, for transmitting blue light;

a green light transmission portion formed thereon, for transmitting green light; and

a red light transmission portion formed thereon, for transmitting red light,

which are placed in a matrix shape and each of which is surrounded by a light shielding layer and has an area for transmitting light, the area having substantially a rectangle shape formed of short sides and long sides,

the plurality of spacers comprising;

a first spacer placed near a boundary between the blue light transmission portion and the green light transmission portion and near a short side of the light transmission portion; and

a second spacer placed near a boundary between the blue light transmission portion and the red light transmission portion and near the short side of the light transmission portion,

wherein a distance between a center of a short side of the blue light transmission portion and a center of the first spacer is smaller than a distance between a center of a short side of the red light transmission portion and a center of the second spacer.