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Electronic device, display device and production method thereof

A technology for electronic components and display components, applied in electrical components, semiconductor/solid-state device manufacturing, electrical solid-state devices, etc., can solve problems such as short circuit of conductive layers and lower yield

Inactive Publication Date: 2005-08-10
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, in order to obtain appropriate TFT characteristics, the film thickness of the gate insulating film 12 is usually as thin as 100 to 300 nm. Therefore, with the miniaturization of wiring and TFTs in the above-mentioned liquid crystal display device, there are gaps in the pixel electrode 8. There is a risk of a short circuit between the drain lead-out electrode 19d, that is, between the upper and lower conductive layers sandwiching the gate insulating film 12 forming the contact hole.
In other words, by arranging the spare second TFT 5b in one pixel, there is a risk of increasing the defect rate of the liquid crystal display device and reducing the yield.

Method used

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  • Electronic device, display device and production method thereof
  • Electronic device, display device and production method thereof
  • Electronic device, display device and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0277] Next, the liquid crystal display device 50 according to the first embodiment of the present invention will be described.

[0278] figure 1is a schematic cross-sectional view of a liquid crystal display device 50, figure 2 is a schematic plan view of the active matrix substrate 20a constituting the liquid crystal display device 50, image 3 is corresponding to figure 2 A schematic cross-sectional view of the active matrix substrate 20a in section III-III, Figure 4 is corresponding to figure 2 A schematic cross-sectional view of the active matrix substrate 20a of the section IV-IV in FIG.

[0279] The liquid crystal display device 50 is provided with an active matrix substrate 20 a , a counter substrate 30 facing thereto, and a liquid crystal layer 40 provided between the two substrates 20 a and 30 .

[0280] In the active matrix substrate 20a, as figure 2 As shown in , on an insulating substrate 10, a plurality of gate lines 1 and a plurality of source lines ...

no. 2 approach

[0349] Next, a liquid crystal display device according to a second embodiment of the present invention will be described. Furthermore, in each of the following embodiments, for Figure 1 to Figure 6 The same reference numerals are given to the same parts, and detailed description thereof will be omitted.

[0350] Figure 7 is a schematic plan view of an active matrix substrate 20b constituting a liquid crystal display device, Figure 8 is corresponding to Figure 7 A schematic cross-sectional view of the active matrix substrate 20b of the section VIII-VIII in FIG. Furthermore, because Figure 7 The cross-sectional composition of the active matrix substrate 20b at the section III-III in image 3 The cross-sectional structure of the active matrix substrate 20a is substantially the same, so the schematic cross-sectional view is omitted.

[0351] This liquid crystal display device is provided with an active matrix substrate 20b, a counter substrate opposed thereto, and a liq...

no. 3 Embodiment approach

[0377] The liquid crystal display device of the present invention may also have the following configuration in the first embodiment described above.

[0378] Figure 10 is a schematic plan view of an active matrix substrate 20c constituting a liquid crystal display device, Figure 11 is corresponding to Figure 10 A schematic cross-sectional view of the active matrix substrate 20c in the section XI-XI, Figure 12 is corresponding to Figure 10 A schematic cross-sectional view of the active matrix substrate 20c of the section XII-XII in FIG.

[0379] This liquid crystal display device includes an active matrix substrate 20c, a counter substrate facing the active matrix substrate, and a liquid crystal layer interposed between these two substrates.

[0380] active matrix substrate 20c, such as Figure 11 As shown in , the composition of the laminated film from the base cover film 11 to the pixel electrode 8 is substantially the same as that of the active matrix substrate 20a...

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Abstract

The invention provides an electronic component, a display element, and a manufacturing method (a modifying method), which controls the lowered yielding even by arranging spare TFT in one pixel, comprising a source electrode wire (2), a pixel electrode (8), a first TFT (5a) for switching the electrical connection between the source electrode wire and the pixel electrode, and a spare second TFT (5b); wherein, the second TFT (5b) comprises a semiconductor film (4) with a source electrode (4b) and a drain electrode (4c), and a gate (1b) on the semiconductor film (4); a gate insulation film is positioned between the gate and the semiconductor film; the source electrode wire (2) is arranged relative to the semiconductor film (4) of the second TFT (5b), and an interlayer insulation film (13) thicker than the gate insulation film (12) is arranged between the source electrode and the semiconductor film. When not used, the first TFT (5a) is electrically connected with the source electrode (4b) through a plurality of contact holes on the interlayer insulation film (13); electric connections between the source electrode wire (2) and the pixel electrode (8) are switched by the second TFT (5b).

Description

technical field [0001] The present invention relates to an electronic element, a display element and a manufacturing method thereof, and in particular, relates to a defect correction method of a defective pixel of a liquid crystal display device. Background technique [0002] The liquid crystal display device of the active matrix driving type has a thin film transistor (hereinafter referred to as TFT) in each pixel which is the smallest unit of an image. Various displays are used. [0003] In recent years, in liquid crystal display devices, in order to increase the aperture ratio of pixels, there is an increasing tendency to use low-resistance materials for wiring and make the line width thinner, improve the characteristics of TFTs, and miniaturize TFTs. [0004] Along with the miniaturization of the wiring and TFT, in the manufacturing process of the liquid crystal display device, the disconnection and short circuit of each wiring and the deterioration of the characteristi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1368G02F1/1343G02F1/136G02F1/1362G09F9/00G09F9/30H01L21/00H01L21/77H01L21/84H01L27/12H01L29/04H01L29/786
CPCG02F1/136259H01L27/1214G02F2001/136268H01L27/12G02F1/136268H01L27/124H01L27/1248G02F1/136
Inventor 白木一郎中岛睦吉田圭介安藤晶一井上雅之
Owner SHARP KK
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