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`Application Number:
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`Page 1 of 52
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`Tianma Exhibit 1007
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`Page 1 of 52
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`Tianma Exhibit 1007
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`tHJfiEAEEE
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`Page 22 of 52
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`

`

`March 6, 2008
`
`2008-055867
`
`2008-055867
`
`Epson Imaging Devices Corp.
`
`
`
`
`
`Takashi SUZUKI
`
`1
`
`
`
`Page 23 of 52
`
`

`

`
`
`Document Title:
`Processing No.
`To:
`International Cl.
`Inventor
`
`Address:
`
`Patent Application
`A000193201
`Commissioner, JPO
`G02F 1/13
`
`Epson Imaging Corp., 6925 Tazawa, Toyoshina,
`Azumino-shi, Nagano
`Hayato KURASAWA
`
`304053854
`Epson Imaging Corp.
`
`100095728
`
`Masanori KAMIYANAGI
`
`100107261
`
`Osamu SUZAWA
`0263-52-4653
`Person on duty
`
`100127661
`
`Kazuhiko MIYASAKA
`
`
`Name:
`
`Patent Applicant:
`
`ID No.
`
`Name:
`Agent
`ID No.
`
`Patent Attorney
`
`Name:
`
`Agent with Power of Attorney
`
`ID No
`
`Patent Attorney
`
`Name:
`
`Tel. No.
`
`Addressee:
`Agent with Power of Attorney
`
`ID No
`
`Patent Attorney
`
`Name:
`Priority claimed based on prior
`applications
`Application 2008-55867
`
`Application No.
`March 6, 2008
`
`Filing Date:
`
`Fee indication
`273291
`
`Deposit account no.:
`15,000 yen
`
`Amount for payment
`
`List of submittals
`Patent Claims: 1
`
`Item name:
`Specification: 1
`
`Item name:
`Drawings: 1
`
`Item name:
`Abstract: 1
`
`Item name:
`General power of attorney no.: 0703436
`
`
`
`
`
`
`2
`
`Page 24 of 52
`
`

`

`Claims

`[Claim 1]
`
`A liquid crystal device having: a first substrate and a second substrate, arranged
`in mutual opposition; a liquid crystal layer sandwiched between the first substrate and the
`second substrate; a first electrode provided on the liquid crystal layer side of the first
`substrate; an insulating layer provided on the liquid crystal layer side of the first electrode;
`and a second electrode provided on the liquid crystal layer side of the insulating layer; in
`which the orientation state of the liquid crystal layer is controlled by the electrical field
`generated between the first electrode and the second electrode;
`
`and whereby multiple data lines and multiple scan lines are disposed on the first
`substrate so as to intersect one other, and the area enclosed by the data lines and the
`scan lines constitutes a sub-pixel;
`
`the second electrode has multiple linear electrodes separated by gaps; each of the
`multiple linear electrodes extends in the longitudinal direction of the sub-pixel and has at
`least one bent portion, and both sides of the bent portion slope in opposite directions to
`one other relative to the longitudinal direction of the sub-pixel;

`
`and the data lines are bent along the direction in which the linear electrodes with
`a bent portion extend.

`
`[Claim 2]
 The liquid crystal device of Claims 1, wherein the area between the bent portion
`of the two linear electrodes, adjacent in the short direction of the sub-pixel, is the gap
`between the two adjacent linear electrodes.

`
`[Claim 3]
 The liquid crystal device of Claim 1, provided with a connecting portion for
`connecting the two adjacent linear electrodes to one another in the area between bent
`portions of the two linear electrodes adjacent in the short direction of the sub-pixel.

`
`[Claim 4] The liquid crystal device of any one of Claims 1 through 3 wherein, of the linear
`electrodes and gaps alternatively aligned in the short direction of the pixel, the width of
`the linear electrodes and the gaps in the area toward the sub-pixel periphery close to the
`
`
`
`3
`
`Page 25 of 52
`
`

`

`data lines is larger than the width of the linear electrodes and gaps in the area toward
`sub-pixel centers far from the data lines.
`
`[Claim 5]
 The liquid crystal device of any one of Claims 1 through 3 wherein, of the linear
`electrodes and gaps aligned in the short direction of the pixel, the width of the linear
`electrodes in the area toward the sub-pixel periphery close to the data lines is larger than
`the width of the linear electrodes in the area toward sub-pixel centers far from the data
`lines.
`
`[Claim 6]
 The liquid crystal device of any one of Claims 1 through 3, wherein of the
`multiple gaps aligned in the short direction of the sub-pixel, the width of gaps in the area
`toward the sub-pixel periphery close to the data line is larger than the width of the gaps
`toward the sub-pixel center far from the data lines.
`
`The liquid crystal device of any one of Claims 1 through [number missing],
`[Claim 7]
`comprising at least a light-shielding film overlapping the data lines as seen in plan view,
`wherein the light-shielding film is disposed on a the first substrate.
`
`
`
`[Claim 8]
`Electronic equipment comprising the liquid crystal device of any one of
`Claims 1 through 7.
`
`[Detailed Description of the Invention]

`[Technical Field]

`[0001]
 The present invention pertains to a liquid crystal device and electronic equipment.
`
`[Background Art]

`[0002]
 Conventionally, methods in which an electric field is generated relative to a liquid
`crystal layer in the direction of a substrate to control the orientation of liquid crystal
`molecules (referred to below as the horizontal electric field method) have been used as
`a means to achieve wider viewing angles in liquid crystal devices; known such horizontal
`
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`electric field methods include the IPS (In-Plane Switching) method and the FFS (Fringe-
`Field Switching) method. A horizontal electric field liquid crystal device has the feature
`that a pixel electrode and a common electrode are formed on the same substrate. In the
`IPS method, pixel electrodes and common electrodes are formed in a comb-shaped
`manner on the same layer, which differs from the FFS method, in which pixel electrodes
`and common electrodes are formed in different layers, one as a comb and the other flat. In
`the FFS method in particular, a strong electric field is generated at the edge of the
`electrode in a diagonal direction relative to the substrate surface because the pixel
`electrode and the common electrode are in different layers. The FFS method thus has
`the advantage that compared to the IPS method, orientation of liquid crystal molecules
`directly on top of the electrode can be more easily controlled.

`
`[0003]
 A method to achieve still wider viewing angles in a horizontal electric field-type
`liquid crystal device is the formation of what is referred to as “multi-domains,” in which
`liquid crystal molecules within a single sub-pixel form multiple domains oriented in
`different directions when a voltage is applied (an area in which liquid crystal molecules
`are oriented to point in a certain direction is called a domain). By forming multi-domains,
`the inherent contrast viewing angle characteristics of each domain compensate one
`another so that a wider viewing angle can be achieved. Multi-domains can be formed by
`devising comb-shaped electrodes. Referring to each of the electrode fingers forming the
`comb-shaped electrodes as "linear electrodes" as shown in Fig. 11, for example, linear
`electrodes 101a are disposed to rise upward to the left and linear electrodes 101b are
`disposed to rise upward to the right within the bottom half of single sub-pixel. When a
`voltage is applied, an electric field is generated in a direction perpendicular to the direction
`in which linear electrodes 101a and 101b extend, such that the liquid crystal molecules
`seek to orient [themselves] along that electric field, therefore in Fig. 11, two areas (the
`top half and bottom half of the sub-pixel) in which the liquid crystal molecules are oriented
`in different directions are formed, thereby realizing a dual domain structure.

`
`[0004]
 Here a uniform horizontal electric field is generated in the liquid crystal layer near
`the center portion of linear electrodes 101a and 101b (the area enclosed by reference
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`letter A in Fig. 8), so a normal display can be achieved, but because horizontal electric
`fields are generated in various directions close to the ends of the linear electrodes 101a
`and 101b (the area enclosed by reference letter B in Fig. 8), the liquid crystal orientation
`is disturbed, and transmittance of light at these locations is greatly reduced during bright
`display. This means that in this configuration the area that can effectively contribute to
`display is reduced, and a sufficient pixel aperture ratio cannot be achieved, so a bright
`display cannot be obtained. Therefore rather than the Fig. 8 configuration in which each
`linear electrode extends in the short direction of the sub-pixel, a multi-domain liquid crystal
`display device is proposed in which each linear electrode is made to extend in the
`longitudinal direction of the sub-pixel (see Patent Document 1). Specifically, this is a form
`in which pixel electrodes and common electrodes extend in the longitudinal direction of
`the sub-pixel and furthermore change directions several times.

`
`[Patent Document 1] Unexamined Patent Application 2002 −14374

`
`[Invention Disclosure]

`[Problem the Invention Seeks to Solve]

`[0005]
 According to the constitution set forth in Patent Document 1, because the area
`occupied by the end portions of linear electrodes in a single sub-pixel is smaller compared
`to the Fig. 11 constitution, the area able to contribute to display is effectively wider, so the
`pixel aperture ratio can be greatly expanded. However, because the pixel electrodes and
`common electrodes in the essentially rectangular sub-pixel are bent, a triangular dead
`space which cannot contribute to the display is created along the data line (the long side
`of the sub-pixel), which reduces the aperture ratio. This creates the problem that a bright
`display cannot be obtained.

`
`[0006]
 The present invention was undertaken to solve the aforementioned problem, and
`has the object of providing a liquid crystal device with a high pixel aperture ratio and wide
`viewing angle, as well as electronic devices utilizing same.

`
`[Means for Solving Problem]

`
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`[0007]
 To achieve the aforementioned object, the liquid crystal device of the present
`invention is a liquid crystal device having: a first substrate and a second substrate,
`arranged in mutual opposition; a liquid crystal layer sandwiched between the first
`substrate and the second substrate; a first electrode provided on the liquid crystal layer
`side of the first substrate; an insulating layer provided on the liquid crystal layer side of
`the first electrode; and a second electrode provided on the liquid crystal layer side of the
`insulating layer; whereby multiple data lines and multiple scan lines are disposed on the
`first substrate so as to intersect one other; the area enclosed by the data lines and the
`scan lines constitutes a sub-pixel; the second electrode has multiple linear electrodes
`separated by gaps; each of the multiple linear electrodes extends in the longitudinal
`direction of the sub-pixel and has at least one bent portion; both sides of the bent portion
`slope in opposite directions to one other relative to the longitudinal direction of the sub-
`pixel; and the data lines or scanning lines are bent along the direction in which the linear
`electrodes with a bent portion extend. In the present invention, “sub-pixel” refers to the
`smallest unit of display area. These sub-pixels are disposed in correspondence to the
`different colored color material layers of the color filter; multiple adjacent sub-pixels
`constitute a single pixel.

`
`[0008] 
 According to the liquid crystal device of the present invention, each linear
`electrode comprising a second electrode extends along the sub-pixel longitudinal
`direction as a whole, and has at least one bent portion, and since both sides of the bent
`portion are shaped to slope in mutually opposing directions in the longitudinal direction of
`the bent portion, a multi-domain is formed and a wide viewing angle can be achieved. In
`addition, since the data lines bend along in the direction in which the linear electrodes
`with a bent portion extend, no dead spaces unable to contribute to display are created
`along the longitudinal sides of the sub-pixel, and a high pixel aperture ratio can be
`maintained.

`
`[0009] In the present invention, the area between the bent portions of the two linear
`electrodes adjacent in the short direction of the sub-pixel may be the gap between the
`two adjacent linear electrodes.
`
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`[0010] Restated, if we refer to the gap between two adjacent linear electrodes as a “slit,”
`the [space] between bent portion and bent portion on the two adjacent linear electrodes
`is a slit, meaning that the slit is connected across both sides of a bent portion in the long
`direction of a sub-pixel. With this constitution, the sub-pixel aperture ra