CN100468136C - Liquid-crystal display device - Google Patents
Liquid-crystal display device Download PDFInfo
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- CN100468136C CN100468136C CNB2005101209960A CN200510120996A CN100468136C CN 100468136 C CN100468136 C CN 100468136C CN B2005101209960 A CNB2005101209960 A CN B2005101209960A CN 200510120996 A CN200510120996 A CN 200510120996A CN 100468136 C CN100468136 C CN 100468136C
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- China
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- liquid crystal
- crystal indicator
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- tft
- thin film
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Abstract
A liquid crystal display device consists of multiple scan line being set to be parallel to each other and multiple data line being set to be parallel to each other and to be vertically crossed with said scan line. It is featured as forming the first scan line by the first and the second sub-scan lines as well as multiple electric-connection units being electric-connected to two said sub-scan lines.
Description
[technical field]
The present invention relates to a kind of liquid crystal indicator.
[background technology]
Because liquid crystal indicator has advantages such as in light weight, thin thickness, power consumption are little, thereby is widely used in modernized information equipments such as TV, notebook computer, mobile phone, personal digital assistant.
A kind of liquid crystal indicator of prior art as shown in Figure 1, this liquid crystal indicator 10 comprises many sweep traces parallel to each other 11, many parallel to each other and with these sweep trace 11 vertically insulated crossing data lines 12, a plurality of thin film transistor (TFT) 13, a gate drive apparatus (figure does not show) and one source pole drive unit (figure does not show).This gate drive apparatus is used to provide scan voltage and gives this sweep trace 11, and this source electrode driving device is used to provide a driving voltage and gives this data line 12, and this thin film transistor (TFT) 13 is positioned at the intersection of this sweep trace 11 and this data line 12.The grid 131 of this thin film transistor (TFT) 13 is connected to this sweep trace 11, and source electrode 132 is connected to this data line 12, and drain electrode 133 is connected to pixel electrode 15.This pixel electrode 15 forms an electric capacity 17 with public electrode 16.The liquid crystal molecule of each pixel electrode 15 and a public electrode 16 and both clampings constitutes a pixel cell, and each pixel cell is driven by a thin film transistor (TFT) 13.
When this liquid crystal indicator 10 showed, gate drive apparatus provided scan voltage to pass through the grid 131 that this sweep trace 11 drives this thin film transistor (TFT) 13, and this thin film transistor (TFT) 13 is opened; Source electrode driving device provides a driving voltage by this data line 12 simultaneously, the source electrode 132 and the drain electrode 133 of this thin film transistor (TFT) 13 offer pixel electrode 15, to produce potential difference (PD) between this pixel electrode 15 and this public electrode 16, liquid crystal molecule between this pixel electrode 15 and this public electrode 16 reverses under the potential difference (PD) effect with the control luminous flux, thereby realizes that picture shows.
Yet, this sweep trace 11 generally more carefully and longer, make that the internal resistance of this sweep trace 11 itself is bigger, when scanning voltage when these sweep trace 11 1 ends flow to the other end, this scanning voltage will produce pressure drop, to such an extent as to when big this thin film transistor (TFT) 13 of pressure drop of scanning voltage can't normally be opened, will make this liquid crystal indicator 10 normally to show, thereby make that these liquid crystal indicator 10 display effects are relatively poor.
[summary of the invention]
In order to solve the relatively poor problem of prior art liquid crystal indicator display effect, be necessary the liquid crystal indicator that provides a kind of display effect preferable.
A kind of liquid crystal indicator, it comprise many sweep traces parallel to each other and many parallel to each other and with the vertically insulated crossing data line of this sweep trace, each sweep trace comprises one first subscan line, one second subscan line and a plurality of electrical connection section, these a plurality of electrical connection sections are electrically connected this first subscan line and second subscan line, this first subscan line and second subscan line are arranged in a crossed manner, and have a plurality of infalls, this electrical connection section is the electrical connections that this first subscan line of each infall contacts with second subscan line.
The sweep trace of this liquid crystal indicator comprises first subscan line and second subscan line, and be electrically connected this first subscan line and second subscan line by a plurality of electrical connection sections, make that the internal resistance of this sweep trace is less, the pressure drop of scanning voltage is also less, thereby make this thin film transistor (TFT) normally open, this liquid crystal indicator normally shows.Therefore, this liquid crystal indicator display effect is preferable.
[description of drawings]
Fig. 1 is the synoptic diagram of the liquid crystal indicator of prior art.
Fig. 2 is the structural representation of liquid crystal indicator first embodiment of the present invention.
Fig. 3 is that the part of the sweep trace of liquid crystal indicator shown in Figure 2 is amplified the planar structure synoptic diagram.
Fig. 4 is the structural representation of liquid crystal indicator second embodiment of the present invention.
Fig. 5 amplifies the planar structure synoptic diagram for the part of the sweep trace of liquid crystal indicator the 3rd embodiment of the present invention.
[embodiment]
Please refer to Fig. 2, be the synoptic diagram of liquid crystal indicator first embodiment of the present invention.This liquid crystal indicator 20 comprise many sweep traces parallel to each other 21, many parallel to each other and with these sweep trace 21 vertically insulated crossing data lines 22, a plurality of thin film transistor (TFT) 23, a gate drive apparatus (figure does not show) and one source pole drive unit (figure does not show).This gate drive apparatus is used to provide scan voltage and gives this sweep trace 21, and this source electrode driving device is used to provide a driving voltage and gives this data line 22, and this thin film transistor (TFT) 23 is positioned at the intersection of this sweep trace 21 and this data line 22.The grid 231 of this thin film transistor (TFT) 23 is connected to this sweep trace 21, and source electrode 232 is connected to this data line 22, and drain electrode 233 is connected to pixel electrode 25.This pixel electrode 25 forms an electric capacity 27 with public electrode 26.Each pixel electrode 25 gets liquid crystal molecule with public electrode 26 and both clampings and constitutes a pixel cell, and each pixel cell is driven by a thin film transistor (TFT) 23.
See also Fig. 3, for the part of sweep trace shown in Figure 2 is amplified floor map, this sweep trace 21 comprises one first subscan line 211, one second subscan line 212 and a plurality of electrical connection section 213, this first subscan line 211 and second subscan line 212 be arranged in parallel, and these a plurality of electrical connection sections 213 are used to connect this first subscan line 211 and second subscan line 212.The spacing of adjacent two electrical connection sections 213 of same sweep trace 21 is less than the spacing of adjacent two data line 22, and particularly less than two/for the moment of the spacing of these two adjacent data lines 22, effect is preferable.
When this liquid crystal indicator 20 showed, gate drive apparatus provided the grid 231 of scan voltage via these sweep trace 21 these thin film transistor (TFT)s 23 of driving, and this thin film transistor (TFT) 23 is opened.The internal resistance of this first subscan line 211 is R
1, the internal resistance of this second subscan line 212 is R
2, first subscan line 211 can equate with the internal resistance of second subscan line 212, and is all right unequal.Then this first subscan line 211 and internal resistance R after second subscan line 212 is in parallel
0=R
1R
2/ (R
1+ R
2), i.e. R
0＜R
1, R
0＜R
2Work as R
1=R
2The time, R
0=R
1/ 2.Therefore, the internal resistance of this sweep trace 21 is less, the pressure drop of this scanning voltage is also less, so this thin film transistor (TFT) 23 can normally be opened, simultaneously source electrode driving device provide a driving voltage via this data line 22, this thin film transistor (TFT) 23 source electrode 232 and drain and 233 offer pixel electrode 25, to produce potential difference (PD) between this pixel electrode 25 and this public electrode 26, liquid crystal molecule between this pixel electrode 25 and this public electrode 26 reverses under the potential difference (PD) effect with the control luminous flux, thereby makes this liquid crystal indicator 20 normally to show.
Because the sweep trace 21 of this liquid crystal indicator 20 comprises first subscan line 211 and second subscan line 212, and this first subscan line 211 is connected by a plurality of electrical connection sections 213 with second subscan line 212, make that the internal resistance of this sweep trace 21 is less, the pressure drop of scanning voltage is also less, thereby make this thin film transistor (TFT) 23 normally open, this liquid crystal indicator 20 normally shows.Therefore, these liquid crystal indicator 20 display effects are preferable.
In addition, the display defect that produces because of short circuit of this liquid crystal indicator 20 is easier to repair.This first subscan line 211 is during fabrication because defective workmanship and during with other line short, can be by the short circuit part of disconnected this first subscan line 211 of cut, and by the normal part and second subscan line, the 212 conduction scanning signals of this first subscan line 211.This structure makes this liquid crystal indicator 20 can repair because of the display defect that short circuit produces, and then makes that these liquid crystal indicator 20 display effects are preferable, and can improve the fine ratio of product of this liquid crystal indicator 20.
Please refer to Fig. 4, be the synoptic diagram of liquid crystal indicator second embodiment of the present invention.The difference of this embodiment and first embodiment is: each pixel cell of liquid crystal indicator 30 is driven by two thin film transistor (TFT)s 33,34, the grid 331,341 of these two thin film transistor (TFT)s 33,34 is connected to this sweep trace 31, source electrode 332,342 is connected to this data line 32, and drain electrode 333,343 is connected to this pixel electrode 35.
Because each pixel electrode 35 is driven by two thin film transistor (TFT)s 33,34, when one of these two thin film transistor (TFT)s 33,34 during fabrication because of defective workmanship can't operate as normal the time, can drive this pixel electrode 35 by the another one normal tft by grid, source electrode and the drain electrode of the bad thin film transistor (TFT) of cut breakdown.This structure can make this liquid crystal indicator 30 avoid because of thin film transistor (TFT) damages the display defect that produces, and then makes that these liquid crystal indicator 30 display effects are preferable, and this structure can improve the fine ratio of product of this liquid crystal indicator 30.
Please refer to Fig. 5, be the synoptic diagram of liquid crystal indicator the 3rd embodiment of the present invention.The difference of this embodiment and first embodiment is: first subscan line 411 and second subscan line 412 of sweep trace 41 are arranged in a crossed manner, and have a plurality of infalls, the electrical connections that this first subscan line 411 that this electrical connection section 413 is each infall contacts with second subscan line 412.
In addition, the spacing of adjacent two electrical connection sections of same sweep trace can also be greater than the spacing of adjacent two data line.
Claims (8)
1. liquid crystal indicator, it comprise many sweep traces parallel to each other and many parallel to each other and with the vertically insulated crossing data line of this sweep trace, it is characterized in that: each sweep trace comprises one first subscan line, one second subscan line and a plurality of electrical connection section, these a plurality of electrical connection sections are electrically connected this first subscan line and second subscan line, this first subscan line and second subscan line are arranged in a crossed manner, and have a plurality of infalls, this electrical connection section is the electrical connections that this first subscan line of each infall contacts with second subscan line.
2. liquid crystal indicator as claimed in claim 1, it is characterized in that: this liquid crystal indicator further comprises a plurality of thin film transistor (TFT)s, it is arranged on the infall of this sweep trace and this data line, each thin film transistor (TFT) has source electrode, grid and drain electrode, this source electrode is connected to this data line, and this grid is connected to this sweep trace.
3. liquid crystal indicator as claimed in claim 2, it is characterized in that: this liquid crystal indicator further comprises a plurality of pixel electrodes and a plurality of public electrode, the liquid crystal molecule of each pixel electrode and public electrode and both clampings constitutes a pixel cell, and this pixel electrode links to each other with the drain electrode of this thin film transistor (TFT).
4. liquid crystal indicator as claimed in claim 3 is characterized in that: each pixel cell is driven by a thin film transistor (TFT).
5. liquid crystal indicator as claimed in claim 3 is characterized in that: each pixel cell is driven by two thin film transistor (TFT)s, and the drain electrode of these two thin film transistor (TFT)s is connected to a pixel electrode.
6. liquid crystal indicator as claimed in claim 1 is characterized in that: the internal resistance of this first subscan line equates with the internal resistance of second subscan line.
7. liquid crystal indicator as claimed in claim 1 is characterized in that: the spacing of adjacent two electrical connection sections is less than the spacing of adjacent two data line.
8. liquid crystal indicator as claimed in claim 1 is characterized in that: the spacing of adjacent two electrical connection sections is less than 1/2nd of the adjacent two data distance between centers of tracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101209960A CN100468136C (en) | 2005-12-17 | 2005-12-17 | Liquid-crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101209960A CN100468136C (en) | 2005-12-17 | 2005-12-17 | Liquid-crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1982959A CN1982959A (en) | 2007-06-20 |
| CN100468136C true CN100468136C (en) | 2009-03-11 |
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ID=38165618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101209960A Active CN100468136C (en) | 2005-12-17 | 2005-12-17 | Liquid-crystal display device |
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| Country | Link |
|---|---|
| CN (1) | CN100468136C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209571218U (en) | 2018-11-06 | 2019-11-01 | 惠科股份有限公司 | A kind of display panel and display device |
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2005
- 2005-12-17 CN CNB2005101209960A patent/CN100468136C/en active Active
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| Publication number | Publication date |
|---|---|
| CN1982959A (en) | 2007-06-20 |
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