CN103278983B - IPS liquid crystal display and color membrane substrates thereof - Google Patents
IPS liquid crystal display and color membrane substrates thereof Download PDFInfo
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- CN103278983B CN103278983B CN201210577053.0A CN201210577053A CN103278983B CN 103278983 B CN103278983 B CN 103278983B CN 201210577053 A CN201210577053 A CN 201210577053A CN 103278983 B CN103278983 B CN 103278983B
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Abstract
The invention discloses a kind of IPS liquid crystal display and color membrane substrates thereof.Described IPS liquid crystal display includes a color membrane substrates and array basal plate, multiple thin film transistor (TFT) and a plurality of public electrode bus is also included on described array base palte, wherein, described color membrane substrates includes: a substrate, described substrate includes that multiple display unit, described display unit include viewing area and surround the neighboring area of described viewing area；It is formed at the black matrix on described substrate；The a plurality of conductor wire being formed in the black matrix in described viewing area, described conductor wire overlaps mutually with the drain electrode of described thin film transistor (TFT)；And it being formed at the conductive line in described neighboring area, described conductor wire and the electrical connection of described conductive line, described conductive line electrically connects with described public electrode bus.The IPS liquid crystal display using the present invention can effectively solve the contradiction improved between storage electric capacity and aperture opening ratio, it is possible on the premise of not sacrificing aperture opening ratio, improves storage electric capacity.
Description
Technical field
The present invention relates to flat panel display, particularly to a kind of IPS liquid crystal display and color membrane substrates thereof.
Background technology
Liquid crystal display is used widely because its volume is little, lightweight, low in energy consumption and display quality is excellent.
But, because the viewing angle problem that liquid crystal display is intrinsic so that the use of liquid crystal display is much limited
System.Industry has been proposed for much improving the scheme of viewing angle problem, such as optical compensation (optically at present
Compensated Birefringenc, OCB) liquid crystal display-display, fringe field switching (Fringe Field
Switching, FFS) liquid crystal display, multidomain homeoptropic (Multi-domainVerticalAlignment,
MVA) (line to line switching, LLS) liquid crystal display is switched between liquid crystal display and line.
Existing LLS liquid crystal display generally includes: array basal plate, a color membrane substrates, is positioned at described battle array
Liquid crystal layer between row substrate and described color membrane substrates, and for by described array base palte and described color film base
The sealed plastic box of plate bonding.
As it is shown in figure 1, be formed with a plurality of gate line 101, public electrode bus 106 on described array base palte 100
With data wire 102, adjacent gate line 101 and data wire 102 limit a pixel cell A.Wherein, grid
Line 101 be arranged in parallel with public electrode bus 106, and is that the same technique of commaterial is formed.
As in figure 2 it is shown, be formed with thin film transistor (TFT) (TFT) 103, a pixel in each pixel cell
Electrode 104 and public electrode 105, wherein the pixel electrode 104 of pectination and the public electrode 105 of pectination are mutual
Interval is arranged and parallel, in " < " shape is arranged in pixel cell.Generally, in each pixel cell, respectively
Public electrode 105 is all connected with public electrode bus 106, described public electrode bus 106 and described TFT
The part drain metal layer 107 of 103 overlaps to form storage electric capacity Cs.During described LLS liquid crystal display operation,
Liquid crystal molecule initial orientation is approximately parallel to pixel electrode 104 and public electrode 105, applies gate line 101
After voltage makes TFT 103 open, when described data wire 102 is after pixel electrode 104 applied signal voltage,
Form a horizontal component of electric field between described public electrode 105 and pixel electrode 104, make liquid crystal molecule same flat
Reverse along horizontal component of electric field direction in face.By adjusting the size of signal voltage, liquid crystal molecule can be controlled
Torsion degree, and then reach to modulate the effect of transmitance.Carry to pixel electrode 104 at described data wire 102
For while signal voltage, storage electric capacity Cs is also electrically charged, after TFT 103 closes, by described storage electricity
Appearance Cs continues as pixel electrode 104 provides voltage.In order to ensure after TFT 103 closes, pixel electrode 104
On be able to maintain that stable voltage, need sufficiently large storage electric capacity Cs.
Fig. 3 is the Fig. 2 profile along B-B direction.As it is shown on figure 3, in order to improve storage electric capacity Cs, logical
Usually through increasing described drain metal layer 107 and the overlapping area of public electrode bus 106, but common electrical
The material of pole bus 106 is the most all opaque metal, therefore the increase of public electrode bus 106 area,
The decline of aperture opening ratio can be caused.It is to say, improving liquid crystal display storage electric capacity Cs is to sacrifice liquid crystal
Premised on showing the aperture opening ratio of device.
Summary of the invention
The present invention provides a kind of IPS liquid crystal display and color membrane substrates thereof, to solve to improve in prior art storage
Electric capacity and the problem of aperture opening ratio contradiction, it can reach to improve storage electric capacity on the premise of not sacrificing aperture opening ratio
Purpose.
For solving above-mentioned technical problem, the present invention provides a kind of IPS liquid crystal display, including a color membrane substrates and
Array basal plate, described array base palte also includes multiple thin film transistor (TFT) and a plurality of public electrode bus, its
In, described color membrane substrates includes:
One substrate, described substrate includes that multiple display unit, described display unit include viewing area and encirclement
The neighboring area of described viewing area；
It is formed at the black matrix in described viewing area；
The a plurality of conductor wire being formed in the black matrix in described viewing area, described conductor wire and described thin film
The drain electrode of transistor is overlapped mutually；And
Be formed at the conductive line in described neighboring area, described conductor wire and the electrical connection of described conductive line, described in lead
Logical line electrically connects with described public electrode bus.
Optionally, described IPS liquid crystal display also includes sealed plastic box, described sealed plastic box by described color membrane substrates and
Described array base palte bonds, mixed with conduction bedding and padding, described conductive line and described public electrode in described sealed plastic box
Bus is electrically connected by described conduction bedding and padding.
Optionally, array base palte described in described IPS liquid crystal display also includes a plurality of gate line and many data
Line, adjacent described gate line and data wire define pixel cell, shape in pixel cell each described
Becoming multiple pixel electrode and multiple public electrode, described public electrode is connected with public electrode bus.
Optionally, described conductor wire uses identical material to prepare with described conductive line.
Optionally, the material of described conductor wire and described conductive line is non-transparent metals.
Optionally, the alloy of one or more during described non-transparent metals is chromium, aluminum, copper.
Optionally, the live width of described conductor wire is less than or equal to the live width of the black matrix at its place.
Optionally, the material of described conductor wire and described conductive line is transparent metal.
Optionally, described transparent material is tin indium oxide.
Optionally, the live width of described conductor wire is more than, less than or equal to the live width of the black matrix at its place.
Accordingly, the present invention also provides for the color membrane substrates of a kind of IPS liquid crystal display and includes:
One substrate, described substrate includes that multiple display unit, described display unit include viewing area and encirclement
The neighboring area of described viewing area；
It is formed at the black matrix in described viewing area；
The a plurality of conductor wire being formed in the black matrix in described viewing area, described conductor wire and array base palte
On the drain electrode of thin film transistor (TFT) overlap mutually；And
It is formed at the conductive line in described neighboring area, described conductor wire and the electrical connection of described conductive line, described
Conductive line electrically connects with the public electrode bus on array base palte.
Optionally, in the color membrane substrates of described IPS liquid crystal display, described conductor wire and described conducting
Line uses identical material to prepare.
Optionally, in the color membrane substrates of described IPS liquid crystal display, described conductor wire is and conductive line
Material be non-transparent metals.
Optionally, in the color membrane substrates of described IPS liquid crystal display, described non-transparent metals be chromium,
The alloy of one or more in aluminum, copper.
Optionally, in the color membrane substrates of described IPS liquid crystal display, the live width of described conductor wire is less than
Or the live width equal to the black matrix at its place.
Optionally, in the color membrane substrates of described IPS liquid crystal display, the live width of described conductor wire is more than
The live width of the black matrix at its place.
Optionally, in the color membrane substrates of described IPS liquid crystal display, described conductor wire and described conducting
Line uses identical material to prepare.
Optionally, in the color membrane substrates of described IPS liquid crystal display, described conductor wire is and conductive line
Material be transparent metal material.
Optionally, in the color membrane substrates of described IPS liquid crystal display, transparent material is tin indium oxide.
In IPS liquid crystal display provided by the present invention, described color membrane substrates includes being formed at described viewing area
A plurality of conductor wire in black matrix in territory, described conductor wire and the thin film transistor (TFT) on described array base palte
Drain electrode is overlapped mutually, and described conductor wire is total with the public electrode on described array base palte by described conductive line
Line electrically connects.Conductor wire on color membrane substrates overlaps mutually with described drain electrode, therefore meeting between conductor wire and drain electrode
Form an electric capacity, simultaneously as described conductor wire electrically connects with described public electrode bus, therefore conductor wire
Between between drain electrode, electric capacity drains with public electrode bus, electric capacity achieves in parallel.It is to say, as IPS
Liquid crystal display storage electric capacity includes two electric capacity of parallel connection: conductor wire capacitance of drain and public electrode bus are leaked
Electrode capacitance.Thus, the present invention can be in the case of not changing public electrode bus area, only by increasing
The area of conductor wire just can improve storage electric capacity；Even in order to improve aperture opening ratio, it is also possible to reduce common electrical
The area of pole bus, and avoid because public electrode bus area reduces and causes by increasing conductor wire area
Storage electric capacity declines, thus effectively solves the contradiction improved between storage electric capacity and aperture opening ratio, can be not
Storage electric capacity is improved on the premise of sacrificing aperture opening ratio.
Accompanying drawing explanation
Fig. 1 is the top view of the array base palte of LLS liquid crystal display in prior art；
Fig. 2 is the partial enlarged drawing of pixel cell A in Fig. 1；
Fig. 3 is the sectional view in Fig. 2 along BB ' line；
Fig. 4 is the structural representation of the IPS liquid crystal display of one embodiment of the invention；
Fig. 5 is the top view of the array base palte of the IPS liquid crystal display of one embodiment of the invention；
Fig. 6 is the partial enlarged drawing of pixel cell 2023 in Fig. 5；
Fig. 7 is the sectional view in Fig. 6 along CC ' line；
Fig. 8 is the top view of the color membrane substrates of the IPS liquid crystal display of one embodiment of the invention
Fig. 9 is the partial enlarged drawing of display unit 2012 in Fig. 8；
Figure 10 is the partial enlarged drawing in Fig. 9 split shed region 2018；
Detailed description of the invention
The core concept of the present invention is, a plurality of conductor wire of increase in the viewing area of color membrane substrates, described
Conductor wire overlaps mutually with the drain electrode of the thin film transistor (TFT) on described array base palte, and described conductor wire passes through institute
State conductive line to electrically connect with the public electrode bus on described array base palte.Conductor wire on color membrane substrates and institute
Stating drain electrode to overlap mutually, can form an electric capacity between conductor wire and drain electrode, the most described conductor wire is with described
Public electrode bus electrically connects, electric capacity between therefore electric capacity and public electrode bus drain between conductor wire drain electrode
Achieve parallel connection.Therefore, it can, in the case of not changing public electrode bus area, only be led by increase
The area of electric wire, it is possible to improve storage electric capacity.
In order to make the object, technical solutions and advantages of the present invention clearer, come below in conjunction with the accompanying drawings further
Elaborate.
As shown in Figure 4, the IPS liquid crystal display 200 of one embodiment of the invention includes: a color membrane substrates 201,
Array basal plate 202, sealed plastic box 203 and liquid crystal layer 204.Described sealed plastic box 203 is by described color membrane substrates 201
Being bonded together with described array base palte 202, described liquid crystal layer 204 is positioned at described color membrane substrates 201 and battle array
Between row substrate 202.
As it is shown in figure 5, be formed with a plurality of gate line 2021 and data wire 2022 on described array base palte 202,
Adjacent gate line 2021 and data wire 2022 limit a pixel cell 2023.
Shown in Fig. 5 and Fig. 6, in each pixel cell 2023, it is formed with a thin film transistor (TFT)
(TFT) 2024, multiple pixel electrode 2025 and multiple public electrode 2026, each public electrode 2026 is altogether
With being connected to a public electrode bus 2027.In the present embodiment, described pixel electrode 2025 and public electrode
2026 are comb electrode, and the pixel electrode 2025 of pectination and the public electrode wire 2026 of pectination are spaced
Arrange and parallel.Described thin film transistor (TFT) 2024 includes draining 20241 and source electrode 20242, the described public affairs of part
Common electrode bus 2027 overlaps mutually with described drain electrode 20241.
As it is shown in fig. 7, because part described public electrode bus 2027 overlaps mutually with described drain electrode 20241,
One first electric capacity C1 can be formed between described public electrode bus 2027 and drain electrode 2041.
As shown in Figure 8, described color membrane substrates 201 includes a substrate 2011, and described substrate 2011 includes multiple
Display unit 2012, described display unit 2012 includes viewing area 2013 and surrounds described viewing area
Neighboring area 2014.
As it is shown in figure 9, be also formed with black matrix in viewing area 2013 in each display unit 2012,
Described black matrix includes Part I 2015a and Part II 2015b, described Part I 2015a and second
Between point 2015b shape in an angle, a plurality of conductor wire 2016, in the neighboring area of display unit 2012
It is formed with conductive line 2017.Described black matrix 2015 includes multiple opening 2018, and each opening 2018 is corresponding
A pixel cell 2023 on array base palte 202.Described conductive line 2017 is positioned at described neighboring area 2013
In, described conductor wire 2016 and described conductive line 2017 electrically connect.
As shown in Figure 10, the Part I 2015a of black matrix forming each opening 2018 forms conduction
Line 2016.For the convenience of processing procedure, described conductor wire 2016 and conductive line 2017 can use identical material
Prepare with layer process.Meanwhile, in order to reduce material cost, described conductor wire 2016 is and conductive line 2017
Nontransparent metal material or transparent technology material can be used, such as: one in chromium, aluminum, copper or
Several alloys, or tin indium oxide.When described conductor wire 2016 is nontransparent metal material, in order to
Avoid that conductor wire 2016 is wide causes aperture opening ratio to decline, live width L1 of described conductor wire 2016 can be designed
Live width L2 for the Part I 2015a less than or equal to black matrix.It is above the preferred embodiment of the invention,
In other embodiments of the invention, described conductor wire 2016 can also be formed at the black of each opening 2018
On the Part II 2015b of matrix, and the live width simultaneously meeting described conductor wire 2016 be designed as less than or etc.
Live width in the Part II 2015b of black matrix.
Understanding in conjunction with Fig. 4, described color membrane substrates 201 is fitted by described sealed plastic box 203 and array base palte 202
After, described conductor wire 2016 overlaps mutually with drain electrode 20241.Wherein, mixed with leading in described sealed plastic box 203
Electrical pad material 2031, the conductive line 2017 and the described public electrode bus 2027 that are positioned at neighboring area pass through institute
State conduction bedding and padding 2031 to electrically connect.Because conductive line 2017 is also connected together with described conductor wire 2016
, the most described conductor wire 2016 also electrically connects with described public electrode bus 2027.
With continued reference to Fig. 4, one second between pixel electrode 2025 and corresponding conductor wire 2016, also can be formed
Electric capacity C2.Because public electrode bus 2027 electrically connects with conductor wire 2016, and described pixel electricity
Pole 2025 electrically connects with described drain electrode 20241, therefore, and described first electric capacity C1 and described second electric capacity C2
It is to be connected in parallel, after described thin film transistor (TFT) 2024 is opened, can be simultaneously to described first electric capacity C1 and institute
State the second electric capacity C2 charging, close have no progeny when stating thin film transistor (TFT) 2024, described first electric capacity C1 and described the
Two electric capacity C2 can continue as described pixel electrode 2025 simultaneously and provide voltage.It is to say, described first electricity
Hold C1 and described second electric capacity C2 parallel connection carrys out work as storage electric capacity Cs.
Usual described public motor bus 2027 is that same layer completes with gate line 2021, drain electrode 20241
Then completing with layer with data wire 2022, described public motor bus 2027 and drain electrode 20241 are all adopted
Use nontransparent metal material, therefore by strengthening the face increasing public motor bus 2027 with drain electrode 20241
Long-pending, aperture opening ratio all can be caused to decline increasing the first electric capacity C1.And in the present invention, at the first original electricity
Hold the second electric capacity C2 the most in parallel on C1, it is possible under conditions of not changing former first electric capacity C1, improve
Storage electric capacity Cs.It is to say, can be only by increasing by the second electric capacity C2 in order to improve storage electric capacity Cs
Realize, do any variation without to described array base palte 202.
In order to increase by the second electric capacity C2 further, the live width of described conductor wire 2016 can be designed as more than it
The live width of the black matrix at place.Meanwhile, in order to avoid because broadening of conductor wire 2016 causes transmitance
Decline, can be by described conductor wire 2016 and the material of conductive line 2017 is set to same transparent metal
Material, such as, tin indium oxide.
It should be appreciated that the color membrane substrates 201 for described IPS liquid crystal display 200 is also institute of the present invention
Scope of protection.
In sum, the present invention adds a plurality of conductor wire, described conductor wire in the viewing area of color membrane substrates
Overlap mutually with drain electrode on array base palte, and described conductor wire is by described conductive line and described array base palte
Public electrode bus electrical connection.Achieve in the public electrode bus capacitance of drain of array base palte in parallel
One conductor wire capacitance of drain.It is to say, include the two of parallel connection as IPS liquid crystal display storage electric capacity
Individual electric capacity: conductor wire capacitance of drain and public electrode bus capacitance of drain.Therefore, it can not change public
In the case of electrode bus area, only by increasing the area of conductor wire, it is possible to improve storage electric capacity.Keep away
Exempt to improve the contradiction between storage electric capacity and aperture opening ratio, it is achieved that on the premise of not sacrificing aperture opening ratio, carry
The purpose of high storage electric capacity.
Obviously, those skilled in the art can carry out various change and modification without deviating from the present invention to invention
Spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of equivalent technologies, then the present invention is also intended to change and including modification include these.
Claims (17)
1. an IPS liquid crystal display, including a color membrane substrates and array basal plate, on described array base palte
Also include multiple thin film transistor (TFT) and a plurality of public electrode bus, it is characterised in that described color membrane substrates includes:
One substrate, described substrate includes that multiple display unit, described display unit include viewing area and encirclement
The neighboring area of described viewing area；
It is formed at the black matrix in described viewing area；
The a plurality of conductor wire being formed in the black matrix in described viewing area, described conductor wire and described thin film
The drain electrode of transistor is overlapped mutually；And
Be formed at the conductive line in described neighboring area, described conductor wire and the electrical connection of described conductive line, described in lead
Logical line electrically connects with described public electrode bus, the part public electrode bus on described array base palte and drain electrode
Overlap mutually.
2. IPS liquid crystal display as claimed in claim 1, it is characterised in that also include sealed plastic box, institute
State sealed plastic box described color membrane substrates and described array base palte to be bonded, mixed with conduction bedding and padding in described sealed plastic box,
Described conductive line and described public electrode bus are electrically connected by described conduction bedding and padding.
3. IPS liquid crystal display as claimed in claim 1, it is characterised in that described array base palte also wraps
Including a plurality of gate line and a plurality of data lines, adjacent described gate line and data wire define pixel cell,
Forming multiple pixel electrodes and multiple public electrode in each described pixel cell, described public electrode is with public
Common electrode bus is connected.
4. IPS liquid crystal display as claimed in claim 1, it is characterised in that described conductor wire and described
Conductive line uses identical material to prepare.
5. IPS liquid crystal display as claimed in claim 4, it is characterised in that described conductor wire and described
The material of conductive line is non-transparent metals.
6. IPS liquid crystal display as claimed in claim 5, it is characterised in that described non-transparent metals is
The alloy of one or more in chromium, aluminum, copper.
7. IPS liquid crystal display as claimed in claim 5, it is characterised in that the live width of described conductor wire
Live width less than or equal to the black matrix at its place.
8. IPS liquid crystal display as claimed in claim 4, it is characterised in that described conductor wire and described
The material of conductive line is tin indium oxide.
9. IPS liquid crystal display as claimed in claim 8, it is characterised in that the live width of described conductor wire
It is more than, less than or equal to the live width of the black matrix at its place.
10. the color membrane substrates of an IPS liquid crystal display, it is characterised in that including:
One substrate, described substrate includes that multiple display unit, described display unit include viewing area and encirclement
The neighboring area of described viewing area；
It is formed at the black matrix in described viewing area；
The a plurality of conductor wire being formed in the black matrix in described viewing area, described conductor wire and array base palte
On the drain electrode of thin film transistor (TFT) overlap mutually；And
It is formed at the conductive line in described neighboring area, described conductor wire and the electrical connection of described conductive line, described
Conductive line electrically connects with the public electrode bus on array base palte, the part public electrode on described array base palte
Bus overlaps mutually with drain electrode.
The color membrane substrates of 11. IPS liquid crystal displays as claimed in claim 10, it is characterised in that institute
Stating conductor wire uses identical material to prepare with described conductive line.
The color membrane substrates of 12. IPS liquid crystal displays as claimed in claim 11, it is characterised in that described
Conductor wire be the material with conductive line be non-transparent metals.
The color membrane substrates of 13. IPS liquid crystal displays as claimed in claim 12, it is characterised in that institute
Stating non-transparent metals is the alloy of one or more in chromium, aluminum, copper.
The color membrane substrates of 14. IPS liquid crystal displays as claimed in claim 13, it is characterised in that institute
State the live width live width less than or equal to the black matrix at its place of conductor wire.
The color membrane substrates of 15. IPS liquid crystal displays as claimed in claim 10, it is characterised in that institute
State the live width live width more than the black matrix at its place of conductor wire.
The color membrane substrates of 16. IPS liquid crystal displays as claimed in claim 15, it is characterised in that institute
Stating conductor wire uses identical material to prepare with described conductive line.
The color membrane substrates of 17. IPS liquid crystal displays as claimed in claim 11, it is characterised in that described
Conductor wire be the material with conductive line be tin indium oxide.
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| CN201210577053.0A CN103278983B (en) | 2012-12-26 | 2012-12-26 | IPS liquid crystal display and color membrane substrates thereof |
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| CN201210577053.0A CN103278983B (en) | 2012-12-26 | 2012-12-26 | IPS liquid crystal display and color membrane substrates thereof |
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Cited By (1)
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| CN108873460A (en) * | 2018-07-18 | 2018-11-23 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel |
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| CN105607370A (en) * | 2016-02-04 | 2016-05-25 | 深圳市华星光电技术有限公司 | Array substrate, manufacturing method thereof and liquid crystal display panel |
| CN105652545A (en) * | 2016-04-12 | 2016-06-08 | 京东方科技集团股份有限公司 | Display panel, manufacturing method of display panel and display device |
| KR102473303B1 (en) * | 2018-01-24 | 2022-12-05 | 삼성디스플레이 주식회사 | Display device |
| CN111679526B (en) * | 2020-06-24 | 2021-05-28 | 武汉华星光电技术有限公司 | Display panel and display device |
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