Liquid crystal display device
First Claim
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1. A liquid crystal display device comprising:
- a first substrate;
a second substrate;
liquid crystal sealed between the first substrate and the second substrate;
a scanning line provided between the first substrate and the liquid crystal;
a drain line crossing the scanning line;
a thin film transistor having a semiconductor layer and a source electrode,a first insulation film above the semiconductor layer;
an organic film above the source electrode;
a second insulation film above the organic film;
a common electrode between the organic film and the second insulation film;
a first pixel electrode above the second insulation film and connected to the source electrode via a contact hole provided in the second insulation film; and
a second pixel electrode adjacent to the first pixel electrode,wherein the scanning line is between the first pixel electrode and the second pixel electrode in a plan view,wherein the semiconductor layer overlapped with the scanning line at a first region and a second region, and a part of the semiconductor layer between the first region and the second region is located on the second pixel electrode side of the scanning line,wherein the part of the semiconductor layer between the first region and the second region is overlapped with the second pixel electrode in a plan view, andwherein a part of the second pixel electrode is overlapped with the scanning line in a plan view.
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Abstract
A column for defining the interval between a TFT substrate and an opposed substrate is formed at a crossing point between a drain line and a scanning line. At the crossing point where the column is formed, the drain line is formed to have a wider width to prevent light leakage. Further, at the crossing point where the column is formed, the scanning line is formed to have a narrower width to prevent increase of capacitance between the drain line and the scanning line. The column is formed at a crossing point corresponding to a specific color, e.g., a blue pixel B, so that a difference in transmittance and in characteristic of thin film transistors due to formation of the column is initially compensated.
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Citations
18 Claims
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1. A liquid crystal display device comprising:
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a first substrate; a second substrate; liquid crystal sealed between the first substrate and the second substrate; a scanning line provided between the first substrate and the liquid crystal; a drain line crossing the scanning line; a thin film transistor having a semiconductor layer and a source electrode, a first insulation film above the semiconductor layer; an organic film above the source electrode; a second insulation film above the organic film; a common electrode between the organic film and the second insulation film; a first pixel electrode above the second insulation film and connected to the source electrode via a contact hole provided in the second insulation film; and a second pixel electrode adjacent to the first pixel electrode, wherein the scanning line is between the first pixel electrode and the second pixel electrode in a plan view, wherein the semiconductor layer overlapped with the scanning line at a first region and a second region, and a part of the semiconductor layer between the first region and the second region is located on the second pixel electrode side of the scanning line, wherein the part of the semiconductor layer between the first region and the second region is overlapped with the second pixel electrode in a plan view, and wherein a part of the second pixel electrode is overlapped with the scanning line in a plan view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A liquid crystal display device comprising:
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a first substrate; a second substrate opposed to the first substrate; liquid crystal sealed between the first substrate and the second substrate; a scanning line above the first substrate and extending in a first direction; a drain line above the first substrate and extending in a second direction crossing the first direction; a thin film transistor having a semiconductor layer; a first pixel electrode connected to the thin film transistor; a second pixel electrode adjacent to the first pixel electrode in the second direction; and a common electrode opposed to the first pixel electrode and the second pixel electrode, wherein the scanning line is between the first pixel electrode and the second pixel electrode in a plan view, wherein the semiconductor layer overlapped with the scanning line at a first region and a second region, and a part of the semiconductor layer between the first region and the second region is located on the second pixel electrode side of the scanning line, wherein the first region is not overlapped with the drain line and the second region is overlapped with the drain line in a plan view, wherein a part of the second pixel electrode is overlapped with the first region. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification
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Current AssigneePanasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
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Original AssigneeJapan Display Incorporated
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InventorsOchiai, Takahiro, Sasaki, Tohru, Nagata, Tetsuya
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Primary Examiner(s)Lau, Edmond C
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Application NumberUS16/538,158Publication NumberTime in Patent Office267 DaysField of SearchUS Class CurrentCPC Class CodesG02F 1/1339 Gaskets; Spacers; Sealing o...G02F 1/13394 spacers regularly patterned...G02F 1/13415 Drop filling processG02F 1/134363 for applying an electric fi...G02F 1/13606 having means for reducing p...G02F 1/136227 Through-hole connection of ...G02F 1/136277 formed on a semiconductor s...G02F 1/136286 Wiring, e.g. gate line, dra...G02F 1/1368 in which the switching elem...
