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Display device

一种显示器件、器件的技术，应用在静态指示器、仪器、非线性光学等方向，能够解决影像模糊、降低成品率、颜色偏移等问题，达到高精确度位置对准、抑制成品率的降低、实现需要的时间的效果

Inactive Publication Date: 2007-05-23
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the active matrix substrate is bonded to the opposing substrate, precise positional alignment is necessary
If the alignment is not performed sufficiently, there is a problem that displacement occurs between the pixel electrode on the active matrix substrate and the colored film or light-shielding film on the opposite substrate, and in the display process other than color shift or image blur In addition to the problem of light leakage, there is also a problem that causes a drop in contrast caused by light leakage, resulting in poor visibility of the display
[0007] However, in the manufacturing process of a display device such as a liquid crystal display device including a complicated process, each active matrix and the opposite substrate are formed in a new process Marks (first mark and second mark) for positional alignment become a factor that leads to a further decrease in yield
Furthermore, as the size of the panel increases, the accuracy of positional alignment decreases, and the process of checking the positional alignment takes a long time.

Method used

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Experimental program
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Embodiment approach 1

[0157] In the present invention, the structure of the active matrix substrate and the counter substrate, which allows the active matrix substrate and the counter substrate to be bonded together with high precision, will be described with reference to FIGS. 1 to 4B. In addition, in this embodiment mode, the case where the pattern which is a 1st mark is formed with a semiconductor film is demonstrated.

[0158] In FIG. 1, on an active matrix substrate 101, a pixel portion 103 composed of a plurality of pixels 102 is formed. In addition, in each pixel 102 , in addition to switching elements for driving, wirings, pixel electrodes, and the like are formed. In addition, a first mark 104 formed on the side of the active matrix substrate 101 for positional alignment when bonded is formed in each pixel 102 .

[0159] In addition, an opposing electrode, a colored film, a light-shielding film, and the like are formed on the opposing substrate 105 . In addition, the second mark 106 form...

Embodiment approach 2

[0208] In this Embodiment Mode 2, the method of manufacturing the active matrix substrate explained in Embodiment Mode 1 will be described with reference to FIGS. 5A to 5E and 6A to 6D. In addition, FIGS. 5A to 5E and 6A to 6D show a manufacturing method until a cross-sectional structure cut along B-B' of FIG. 2A is formed in the active matrix substrate shown in FIGS. 2A and 2B. In addition, in FIGS. 2A and 2B , 5A to 5E , and 6A to 6D , common reference numerals are used for description.

[0209] As shown in FIG. 5A , a first conductive film 301 is formed on a substrate 201 . The first conductive film 301 is formed by sputtering method, PVD method, CVD method, droplet discharge method, printing method, plating method and other film formation methods using the following materials: a film containing a semiconductor such as Si, Ge, etc., made of Ag, Au, etc. , metal elements such as Cu, Ni, Pt, Pd, Ir, Rh, W, Al, Ta, Mo, Cd, Zn, Fe, Ti, Zr, Ba, Nd, and alloy materials mainly co...

Embodiment approach 3

[0231] In this embodiment mode, the structure of the liquid crystal display panel of the present invention will be described with reference to FIGS. 7A and 7B. FIG. 7A is a top view of a liquid crystal panel in which a liquid crystal material is sandwiched between an active matrix substrate 701 and an opposite substrate 702 . Fig. 7B corresponds to a sectional view cut along line A-A' of Fig. 7A. In addition, the active matrix substrate described in Embodiment Mode 1 or Embodiment Mode 2 is used as the active matrix substrate 701 .

[0232] In FIG. 7A , 705 surrounded by a dotted line is a pixel portion, and 706 is a driver circuit portion. In the present embodiment, the pixel portion 705 is formed in a region surrounded by the sealant 703, and the driver circuit portion 506 is mounted outside the region.

[0233] The sealant 703 for sealing the active matrix substrate 701 and the opposite substrate 702 contains a gap material for maintaining the interval of the closed space...

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Abstract

It is an object of the present invention to provide a liquid crystal display device and the like with high visibility by forming a marker for alignment without increasing an additional step, thereby enabling alignment with high accuracy and reduction in time required for an inspection process in addition to suppressing reduction in yield. A pattern formed over an active matrix substrate which is one of a pair of substrates arranged to be opposed to each other and has a pixel portion is formed as a first marker for alignment, and an opening portion of a light-shielding film formed over an opposite substrate which is the other one of the pair of substrates is formed as a second marker for the alignment. It is to be noted that, by conducting alignment using these markers, alignment of the active matrix substrate and the opposite substrate with high accuracy can be conducted.

Description

technical field [0001] The present invention relates to a display device such as an active matrix type liquid crystal display device. Background technique [0002] Active matrix type liquid crystal display devices using active elements such as thin film transistors (TFTs) are well known. Since the active matrix liquid crystal display device can increase the pixel density, and its small size, light weight and low power consumption, as a kind of flat-panel display instead of CRT, it is being used in monitors of personal computers, LCD TVs, and automobiles. Develop products such as monitors for navigation systems. [0003] In a liquid crystal display device, a substrate (active matrix substrate) on which a pixel portion including a first electrode (pixel electrode) or the like is formed in addition to a plurality of TFTs and wirings is separated from a substrate on which a second electrode (counter electrode) is formed. , light-shielding film (black matrix), and colored film ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333G02F1/1362G02F1/133
CPCG02F1/1333G02F2001/133354G02F1/1362G02F1/133354
Inventor 细谷邦雄
Owner SEMICON ENERGY LAB CO LTD