CN209433162U - Display device - Google Patents
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- CN209433162U CN209433162U CN201920261553.0U CN201920261553U CN209433162U CN 209433162 U CN209433162 U CN 209433162U CN 201920261553 U CN201920261553 U CN 201920261553U CN 209433162 U CN209433162 U CN 209433162U
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Abstract
The utility model provides a kind of display device, it includes switch element, pixel electrode, common electrode, inorganic insulating membrane, the light shielding part clipped by the pixel electrode and the common electrode, the pixel electrode includes: base portion, it has the first width in a first direction, via the opening portion of the common electrode and the contact hole of the inorganic insulating membrane, it is electrically connected with the switch element；First band electrode has second width smaller than first width in said first direction；With first electrode portion, it has third width smaller than first width and bigger than second width in said first direction, connect first band electrode and the base portion, the first electrode portion and first band electrode are Chong Die with the common electrode, and the light shielding part is Chong Die with the base portion and the first electrode portion.Thereby, it is possible to provide the reduced display device that can inhibit display quality.
Description
The Japanese patent application No.2018-037620 CLAIM OF PRIORITY that the application was submitted based on March 2nd, 2018 is complete
Portion's content is incorporated herein by reference.
Technical field
The embodiments of the present invention is related to display device.
Background technique
In recent years, various researchs have been carried out to the technology of the display quality for improving display device.It discloses in one example
There is a kind of technology, makes and red color filter and the green color filter opposite pixel electrode pixel more opposite than with blue colour filter respectively
Electrode is short, and the pixel electrode more opposite than with white filter piece is long.But in this art, the display quality of display device is also
There are improved spaces.
Utility model content
The purpose of this utility model is to provide a kind of reduced display devices for being able to suppress display quality.
One embodiment of the utility model provides a kind of display device comprising switch element, shares electricity at pixel electrode
Pole, inorganic insulating membrane, the light shielding part clipped by the pixel electrode and the common electrode, wherein the pixel electrode includes:
Base portion has the first width in a first direction, via the opening portion of the common electrode and connecing for the inorganic insulating membrane
Contact hole is electrically connected with the switch element；First band electrode has smaller than first width in said first direction
The second width；With first electrode portion, have in said first direction smaller than first width and wider than described second
Big third width is spent, first band electrode and the base portion, the first electrode portion and the first band-like electricity are connected
Pole is Chong Die with the common electrode, and the light shielding part is Chong Die with the base portion and the first electrode portion.
Another embodiment of the utility model also provides a kind of display device comprising: the first pixel electrode and second
Pixel electrode；Signal wire between first pixel electrode and second pixel electrode；With being total to opening portion
With electrode, first pixel electrode includes the first base portion positioned at the opening portion, the first band electrode, connection described first
The first electrode portion of band electrode and first base portion, the first electrode portion and first band electrode are shared with described
Electrode overlapping, second pixel electrode include positioned at the opening portion the second base portion and connect with second base portion the
Two band electrodes, second band electrode is Chong Die with the common electrode, first pixel electrode and the common electrode
The second pixel electrode area Chong Die with the common electrode described in the area ratio of overlapping is big.
Embodiment according to the present utility model is capable of providing the reduced display device that can inhibit display quality.
Detailed description of the invention
Fig. 1 is the top view for indicating the appearance of display device DSP of present embodiment.
Fig. 2 is the basic structure for indicating pixel PX and the figure of equivalent circuit.
Fig. 3 is the top view for indicating an example of pixel layout and light shield layer BM.
Fig. 4 is the top view for indicating the major part of green pixel PG12 shown in Fig. 3.
Fig. 5 is the top view for being exaggerated a part of pixel layout shown in Fig. 3.
Fig. 6 is the cross-sectional view along the display device DSP of A-B line shown in Fig. 4.
Fig. 7 is the cross-sectional view along the display panel PNL of C-D line shown in fig. 5.
Fig. 8 is the cross-sectional view for indicating other structures example.
Fig. 9 is the cross-sectional view for indicating other structures example.
Figure 10 is the top view for indicating to be applicable to other pixel electrode PE12 of green pixel PG12 shown in Fig. 3.
Figure 11 is the top view for indicating the other structures example of pixel layout and light shield layer BM.
Figure 12 is the top view for indicating the other structures example of pixel layout and light shield layer BM.
Specific embodiment
Hereinafter, being described with reference to the embodiments of the present invention.In addition, the disclosure is only an example, this field skill
The suitable change of main idea of the art personnel based on utility model and the content being readily apparent that are included in the scope of the utility model certainly
It is interior.In addition, in order to more clearly state, compared with actual mode, schematically showing width, the thickness in each portion sometimes in attached drawing
Degree, shape etc., but it is only an example, does not limit the explanation of the utility model.In addition, in the specification and drawings, about
Some figures to having the function of that constituent element same as described above or similar marks same reference marks, and are suitable for omitting repetition
Detailed description.
In the present embodiment, an example as display device DSP, is illustrated liquid crystal display device.In addition, this reality
It applies main structure disclosed in mode and is readily applicable to that there is the emissive type of organic electro-luminescent display unit etc. to show
Device, the electronic paper-type display device with electrophoresis element etc. apply MEMS (Micro Electro Mechanical
Systems, MEMS) display device or apply electrochromic display device etc..
Fig. 1 is the perspective view for indicating the appearance of display device DSP of present embodiment.In one example, first direction X,
Two direction Y and third direction Z are mutually orthogonal, but can also be intersected with the angle other than 90 degree.First direction X and second direction Y
It is equivalent to the direction with the main surface parallel for the substrate for constituting display device DSP, third direction Z is equivalent to the thickness of display device DSP
Spend direction.In the present specification, it will indicate that the position of the front end side of the arrow of third direction Z is referred to as, by the front end with arrow
Under the position of opposite side is referred to as.In addition, there is the sight for observing display device DSP in the front end side for indicating the arrow of third direction Z
Examine position, by be positioned against from this X-Y plane as defined in first direction X and second direction Y observation be referred to as bow
Depending on.It will be direction D1 relative to the direction definition of second direction Y intersection at an acute angle counterclockwise in addition, in Fig. 1, it will be relative to the
Two direction Y clockwise intersection at an acute angle direction definition be direction D2.In addition, second direction Y and direction D1 angulation θ 1
It is roughly the same with direction D2 angulation θ 2 with second direction Y.
The top view of the display device DSP on X-Y plane is shown here.Display device DSP includes display panel PNL, soft
Property printed circuit board 1 and IC chip 2.
Display panel PNL is liquid crystal display panel, including first substrate SUB1, the second substrate SUB2, aftermentioned liquid crystal layer
LC, sealing element SE and light shield layer LS.Display panel PNL includes the display unit DA for showing image and the frame-shaped for surrounding display unit DA
Non-display portion NDA.The second substrate SUB2 is opposite with first substrate SUB1.First substrate SUB1 have than the second substrate SUB2 more to
The mounting portion MA that second direction Y extends.
Sealing element SE is located at non-display portion NDA, for being bonded first substrate SUB1 and the second substrate SUB2, while sealing fluid
Crystal layer LC.Light shield layer LS is located at non-display portion NDA.Set on the position Chong Die with light shield layer LS when sealing element SE is overlooked.In Fig. 1,
Region configured with sealing element SE and the region configured with light shield layer LS indicate by mutually different oblique line, sealing element SE and shading
The region of layer LS overlapping is indicated by intersecting hachure.Light shield layer LS is set to the second substrate SUB2.
Display unit DA is located at the inside surrounded by light shield layer LS.Display unit DA includes (column direction) X and the in a first direction
Two directions (line direction) Y is in multiple pixel PX of rectangular (ranks shape) configuration.In the example depicted in figure 1, along second party
The pixel PX for being located at odd-numbered line to Y extends along direction D1.In addition, being located at the pixel PX of even number line along second direction Y
Extend along direction D2.In addition, pixel PX here indicates the minimum unit that can individually control according to picture element signal, sometimes
Referred to as sub-pixel.In addition, sometimes main pixel MP will be referred to as realizing the minimum unit of colour display.Main pixel MP passes through setting
It shows multiple sub-pixel PX of mutually different color and constitutes.It in one example, include aobvious as sub-pixel PX in main pixel MP
Show green pixel, the blue pixel being displayed in blue and the white pixel being displayed in white of red red pixel, display green.
What display unit DA extended with a pair of of the edge part E1 and E2 extended in X along a first direction, along second direction Y
A pair of of edge part E3 and E4, four fillet part R1~R4.Display panel PNL has a pair of of straight line that X extends along a first direction
Portion E11 and E12, a pair of of straight line portion E13 and E14, two the fillet parts R11 and R12 extended along second direction Y.Fillet part R11
The outside of fillet part R1 and R2 is located at R12.The radius of curvature of fillet part R11 can be with the radius of curvature phase of fillet part R1
Together, it can also be different.Straight line portion E11 and E12 are equivalent to the short side of first substrate SUB1.E13 and E14 are equivalent to for straight line portion
The long side of first substrate SUB1 and the second substrate SUB2.
Flexible printed circuit board 1 and IC chip 2 are installed on mounting portion MA.In addition, IC chip 2 is installed on flexible print circuit
Plate 1.IC chip 2 is built-in with the display driver that the output image under the display pattern of display image shows required signal
DD.In the example depicted in figure 1, the touch come close to or in contact with that IC chip 2 is built-in with to detection object to display device DSP passes
The touch controller TC that sense mode is controlled.
The display panel PNL of present embodiment is also possible to by making the light of the back side from first substrate SUB1 have choosing
It transmits with selecting and shows the transmission-type with transmission display function of image, by making the front side from the second substrate SUB2
Light selectively reflects and shows the reflection-type with reflection display function of image or have transmission display function and reflection
Any one of Semitransmissive of display function.
In addition, the detailed construction about display panel PNL, in this description will be omitted, but display panel PNL also may include with
Using the display pattern of the transverse electric field along substrate interarea, using the normal along substrate interarea vertical electric field display pattern,
Using relative to substrate interarea to the display pattern of the inclined tilting electric field of tilted direction or by above-mentioned transverse electric field, vertical electric field and
The corresponding any structure of the display pattern that tilting electric field proper combination utilizes.Here substrate interarea refers to and by first direction
Face X parallel with X-Y plane as defined in second direction Y.
Fig. 2 is the basic structure for indicating pixel PX and the figure of equivalent circuit.Multi-strip scanning line G and scan line drive circuit GD
Connection.A plurality of signal wire S is connect with signal-line driving circuit SD.In addition, scan line G and signal wire S may not necessarily linearly prolong
It stretches, their a part can also be bent.For example, signal wire S can be set on second direction Y part of it is bent
Extend.
Common electrode CE is configured throughout multiple pixel PX.Common electrode CE and voltage supplier CD and touch shown in FIG. 1
Controller TC connection.In display mode, voltage supplier CD supplies common voltage (Vcom) to common electrode CE.It is passed touching
Under sense mode, touch controller TC is to common electrode CE for giving the different touch driving voltage of common voltage.
Each pixel PX includes switch element SW, pixel electrode PE, common electrode CE, liquid crystal layer LC etc..Switch element SW
It is such as made of thin film transistor (TFT) (TFT), is electrically connected with scan line G and signal wire S.It is arranged on scan line G and X in a first direction
The respective switch element SW electrical connection of pixel PX.Signal wire S and the respective switch element of pixel PX arranged on second direction Y
SW electrical connection.Pixel electrode PE is electrically connected with switch element SW.Pixel electrode PE is opposite with common electrode CE respectively, using in picture
The electric field that generates between plain electrode PE and common electrode CE drives liquid crystal layer LC.Capacitor CS is for example formed in and common electrode CE
Idiostatic electrode and between the idiostatic electrode of pixel electrode PE.
Fig. 3 is the top view for indicating an example of pixel layout and light shield layer BM.Scan line G1~G3 is respectively along first party
Linearly extend to X, and is arranged on second direction Y at spaced intervals.Signal wire S1~S6 is respectively approximately along second direction Y
Extend, and is arranged on X in a first direction at spaced intervals.
Light shield layer BM is formed in lattice-shaped.That is, light shield layer BM include when overlooking with signal wire S1~S6 be overlapped screening respectively
Light portion B11~B16 and with scan line G1~G3 be overlapped light shielding part B21~B23 respectively.In these light shielding parts B11~B16 and
B21~B23 is formed with multiple opening portions for transmitted light.Multiple opening portions are in array-like arrangement.Each opening portion is equivalent to red
Any one of pixel PR, green pixel PG, blue pixel PB, white pixel PW.Light shield layer BM by with non-display portion NDA shown in FIG. 1
The material of the identical light-proofness of light shield layer LS formed, connect in non-display portion NDA with light shield layer LS.
In addition, light shield layer BM includes the light shielding part B31 Chong Die with master space part MSP and the screening Chong Die with secondary spacer SSP
Light portion B32.In the example shown in Fig. 3, master space part MSP is located at the cross part of signal wire S5 and scan line G2.Light shielding part B31
It is extended in master space part MSP substantially concentric circles.Secondary spacer SSP is located at the cross part of signal wire S2 and scan line G2.It hides
Light portion B31 is in extend with secondary spacer SSP substantially concentric circles.Master space part MSP is in first substrate SUB1 and second
The spacer of cell gap is formed between substrate SUB2, secondary spacer SSP is that have the height lower than the height of master space part MSP
Spacer, describe after detailed content.In addition, pair spacer SSP also is located at scan line G1 and G3 and signal wire S2 and S5 phase
Mutual cross part is respectively arranged with light shielding part B32 in the position Chong Die with secondary spacer SSP.
Light shield layer BM as described above surrounds red pixel PR11~PR14, green pixel PG11~PG14, blue pixel respectively
PB12 and PBI3 and white pixel PW11 and PW14.Red pixel PR11, green pixel PG11, white pixel PW11, red pixel PR12, green picture
X is arranged successively along a first direction between scan line G1 and G2 by plain PG12 and indigo plant pixel PB12, and is prolonged respectively along direction D2
It stretches.Red pixel PR13, green pixel PG13, blue pixel PB13, red pixel PR14, green pixel PG14 and white pixel PW14 are in scan line
X is arranged successively along a first direction between G2 and G3, and is extended respectively along direction D1.Red pixel PR11 and PR13, green pixel
PG11 and PG13, white pixel PW11 and blue pixel PB13, red pixel PR12 and PR14, green pixel PG12 and PG14 and blue picture
Plain PB12 and white pixel PW14 is arranged respectively along second direction Y.
Red color filter CFR is configured on red pixel PR11~PR14, configured with green on green pixel PG11~PG14
Color colour filter CFG is configured with blue color filter CFB on blue pixel PB12 and PB13.It is configured on white pixel PW11 and PW14
There is aftermentioned transparent coating OC.
Fig. 4 is the top view for indicating the major part of green pixel PG12 shown in Fig. 3.Switch element SW and scan line G2 and
Signal wire S6 electrical connection.The switch element SW of example shown in Fig. 4 is constructed with double grid.Switch element SW includes semiconductor layer SC
With drain electrode DE2.In addition, drain electrode DE2 may also be referred to as source electrode sometimes in switch element SW.Semiconductor layer SC is with it
A part mode Chong Die with signal wire S6 configures, and another part extends between signal wire S5 and S6, is shaped generally as U-shaped
Shape.Semiconductor layer SC intersects with scan line G2 respectively between the region Chong Die with signal wire S6 and signal wire S5 and S6.It is sweeping
It retouches on line G2, the region Chong Die with semiconductor layer SC is worked respectively as gate electrode GE 1 and GE2.Semiconductor layer SC is in one
End SCA is electrically connected via through hole CH1 with signal wire S6, in addition, in its other end SCB via through hole CH2 and electric leakage
Pole DE2 electrical connection.Drain electrode DE2 is formed as island, is configured between signal wire S5 and S6.
Green pixel PG12 includes pixel electrode PE12.Pixel electrode PE12 include base portion BS2, band electrode Pa21 and
Pa22, electrode portion EL1~EL3, edge part EA and EB.Base portion is oppositely arranged in sequence with the arrow for indicating second direction Y
BS2, electrode portion EL1, band electrode Pa21 and Pa22, electrode portion EL3 and electrode portion EL2.Electrode portion EL1~EL3 without slit,
Notch, opening etc. are equivalent to part shared by conductive material.Alternatively, electrode portion EL1~EL3 is formed as one with base portion BS2,
It is equivalent to the part with the current potential same with base portion BS2.
Base portion BS2 has width W11.In addition, in the present specification, width is equivalent to the length of X along a first direction.Base
Portion BS2 is Chong Die with drain electrode DE2, and is electrically connected with switch element SW.Base portion BS2 with for passing through with what drain electrode DE2 was electrically connected
Through-hole CH3 overlapping.The interconnecting piece for connecting pixel electrode PE12 and switch element SW describes later.
Band electrode Pa21 and Pa22 interval D11 is arranged on X in a first direction, relative to first direction X along oblique
Direction D2 extends.Band electrode Pa21 and Pa22 are respectively provided with equal width W12.Width W12 is smaller than width W11.In Fig. 4 institute
In the example shown, between electrode portion EL1 and EL3, there is band electrode Pa21 length L11, band electrode Pa22 to have length
L12.Length L11 is shorter than length L12.Here length is equivalent to the length along direction D2.
Electrode portion EL1 is equivalent to the part for connecting band electrode Pa21 and Pa22 with base portion BS2.Electrode portion EL1 has
Width W13.Width W13 is smaller than width W11, bigger than width W12.Width W13 is equal to the width W12 and band of band electrode Pa21
The sum of the width W12 of shape electrode Pa22 and interval D 11.
Electrode portion EL2 is farthest away from base portion BS2 in pixel electrode PE12, and X extends along a first direction.Electrode portion EL2 tool
There is width W14.Width W14 is bigger than width W13.
Electrode portion EL3 is equivalent to the part for connecting band electrode Pa21 and Pa22 with electrode portion EL2.Electrode portion EL3 tool
There is width W13.
Edge part EA and EB are located at the most peripheral on pixel electrode PE12.Edge part EA is contained in band electrode Pa21, with
Signal wire S5 is opposite.Edge part EB is contained in band electrode Pa22, opposite with signal wire S6.Edge part EA spaning electrode portion EL1~
EL3 and band electrode Pa21 extends along direction D2.Edge part EB spaning electrode portion EL1, band electrode Pa22, the edge electrode portion EL3
Direction D2 extend.Electrode portion EL2 intersects with edge part EB, prominent towards signal wire S6 compared with the EB of edge part.Edge part EA
It is identical as width W13 with the interval D 12 on the X in a first direction of edge part EB.
In pixel electrode PE12 as described above, electrode portion EL1, band electrode Pa21, band electrode Pa22 and electrode portion
EL3 is Chong Die with common electrode CE.
X is arranged master space part MSP and base portion BS2 along a first direction.Light shield layer BM shown in Fig. 3 has click and sweep in Fig. 4
Shape shown in line.When vertical view, band electrode Pa21 and Pa22 is Chong Die with the opening portion AP of light shield layer BM.Light shielding part B31 remove with
It is also Chong Die with base portion BS2 and electrode portion EL1 except master space part MSP overlapping.In addition, light shield layer BM and electrode portion EL2 and EL3
Overlapping.Length L22 long length L21 edge part EA Chong Die with light shielding part B31 more Chong Die with light shielding part B31 than edge part EB.
Pixel electrode PE15 positioned at green pixel PG14 includes the electrode portion EL5 Chong Die with light shielding part B31.
In the example shown in Figure 4, band electrode Pa21 is equivalent to the first band electrode, and band electrode Pa22 is equivalent to
Two band electrodes, electrode portion EL1 are equivalent to first electrode portion, and electrode portion EL2 is equivalent to second electrode portion, and electrode portion EL3 is suitable
In third electrode portion, edge part EA is equivalent to first edge portion, and edge part EB is equivalent to second edge portion, and signal wire S5 is equivalent to
First signal wire, signal wire S6 are equivalent to second signal line, and width W11 is equivalent to the first width, and it is wide that width W12 is equivalent to second
Degree, width W13 are equivalent to third width, and width W14 is equivalent to the 4th width.
Fig. 5 is the top view for being exaggerated a part of pixel layout shown in Fig. 3.Required knot is only illustrated herein
Structure.
Red pixel PR12 includes pixel electrode PE11, and green pixel PR12 includes pixel electrode PE12, and blue pixel PB12 includes
Pixel electrode PE13.X is arranged successively pixel electrode PE11~PE13 along a first direction.Signal wire S5 is located at pixel electrode PE11
Between PE12, signal wire S6 is located between pixel electrode PE12 and PE13.Pixel electrode PE11 and PE12 are located at scan line G1
Between G2.Pixel electrode PE13 is located between scan line G1 and G2, and intersects with scan line G2.
Pixel electrode PE11~PE13 is respectively provided with base portion BS1~BS3 and band electrode Pa1~Pa3.Base portion BS1~BS3
Positioned at the opening portion OP of common electrode CE.Base portion BS1 and BS2 are arranged on X in a first direction.Base portion BS3 is across scan line G2
In with base portion BS1 and BS2 opposite side.Band electrode Pa1~Pa3 is Chong Die with common electrode CE.Band electrode Pa1 is in opening portion OP
In be directly connected to base portion BS1.Band electrode Pa2 has band electrode Pa21 and Pa22 shown in Fig. 4, via electrode portion EL1
It is connect with base portion BS2.Electrode portion EL1 is Chong Die with common electrode CE.Band electrode Pa3 is direct with base portion BS3 in the OP of opening portion
Connection.
Band electrode Pa1~Pa3 extends respectively along direction D2.Band electrode Pa1 and Pa2 in the example shown in FIG. 5,
It is two, band electrode Pa3 is three.Band electrode Pa1~Pa3 is located between scan line G1 and G2.
About the length Lx of X along a first direction, pixel electrode PE11 and PE12 have equal length Lx1, pixel electricity
Pole PE13 has the length Lx2 longer than length Lx1.Have about the length Ly along second direction Y, pixel electrode PE11 and PE12
There are equal length Ly1, pixel electrode PE13 that there is the length Ly2 longer than length Ly1.About the length Ld along direction D2,
Band electrode Pa1 have length Ld1, band electrode Pa2 have shorter than length Ld1 length Ld2, band electrode Pa3 have than
The length Ld3 of length Ld1 long.In addition, length Lx, Ly and Ld here is the length in the region Chong Die with common electrode CE.
There is equal width W12, band electrode Pa3 to have the width smaller than width W12 by band electrode Pa1 and Pa2
W15。
In this way, pixel electrode PE11 and PE12 have same shape, and it is respectively provided with the band electrode Pa1 of identical quantity
And Pa2, on the other hand, pixel electrode PE12 has the electrode portion Chong Die with common electrode CE compared with pixel electrode PE11
On this point of EL1, is different.Therefore, the first pixel electrode PE12 Chong Die with common electrode CE area ratio pixel electrode PE11 is together
The second area being overlapped with electrode CE is big.Therefore, the capacitor CS2 of pixel electrode PE12 and common electrode CE is than pixel electrode PE11
It is big with the capacitor CS1 of common electrode CE.
Master space part MSP is located between base portion BS1 and BS2.Light shield layer BM shown in Fig. 3 has shown in Fig. 5 chain lines
Shape.Light shielding part B31 is Chong Die with base portion BS1 and BS2, master space part MSP and electrode portion EL1.
Pixel electrode PE12 is equivalent to the first pixel electrode in the example shown in FIG. 5, and base portion BS2 is equivalent to the first base
Portion, band electrode Pa2 are equivalent to the first band electrode, and electrode portion EL1 is equivalent to first electrode portion.In addition, pixel electrode PE11
It is equivalent to the second pixel electrode, base portion BS1 is equivalent to the second base portion, and band electrode Pa1 is equivalent to the second band electrode.
Although red pixel PR14 includes pixel electrode PE14 without describing in detail, green pixel PR14 includes pixel electrode
PE15, white pixel PW14 include pixel electrode PE16.Pixel electrode PE14~PE16 is located between scan line G2 and G3.Pixel electricity
Pole PE14~PE16 is respectively provided with the band electrode Pb1~Pb3 Chong Die with common electrode CE.Band electrode Pb1 and Pb2 have phase
Deng width W12, band electrode Pb3 have the width W16 bigger than width W12.
Fig. 6 is the cross-sectional view along the display device DSP of A-B line shown in Fig. 4.Example shown in fig. 6 is to apply benefit
The example of FFS (Fringe Field Switching, fringe field switching) mode of one of the display pattern with transverse electric field.
First substrate SUB1 includes insulating substrate 10, insulating film 11~16, semiconductor layer SC, signal wire S5 and S6, metal
Wiring ML5 and ML6, common electrode CE, pixel electrode PE12, alignment films AL1 etc..Insulating substrate 10 is glass substrate or flexible
The transparent substrates such as resin substrate.Insulating film 11 is located on insulating substrate 10.Semiconductor layer SC is located on insulating film 11, by insulating film
12 coverings.Semiconductor layer SC is for example formed by polysilicon, but can also be formed by amorphous silicon or oxide semiconductor.Shown in Fig. 6
Scan line between insulating film 12 and 13.
Signal wire S5 and S6 are located on insulating film 13, are covered by insulating film 14.In addition, other signals line (not shown) also position
In with signal wire S6 same layer.In one example, signal wire S5 and S6 is to be sequentially laminated with the layer containing titanium (Ti), contain aluminium (Al)
Layer and containing titanium (Ti) layer first layer stack or be sequentially laminated with the layer containing molybdenum (Mo), containing aluminium (Al) layer and
Layer containing molybdenum (Mo).
Metal wiring ML5 and ML6 are located on insulating film 14, are covered by insulating film 15.In one example, metal wiring ML5 and
ML6 is above-mentioned first layer stack or second laminated body.
Common electrode CE is located on insulating film 15, is covered by insulating film 16.Common electrode CE be by tin indium oxide (ITO) or
The transparent electrode that the transparent conductive material such as indium zinc oxide (IZO) is formed.
Pixel electrode PE12 is located on insulating film 16, is covered by alignment films AL1.Pixel electrode PE12 is by ITO or IZO etc.
The transparent electrode that transparent conductive material is formed.Electrode portion EL1 is opposite with common electrode CE across insulating film 16, forms capacitor
CS1。
Insulating film 11~13 and insulating film 16 be formed by inorganic material such as silica, silicon nitride, silicon oxynitrides it is inorganic
Insulating film can be monolayer constructions, be also possible to multi-ply construction.Insulating film 14 and 15 is, for example, by organic material such as acrylic resin
Expect the organic insulating film formed.In addition, insulating film 15 is also possible to inorganic insulating membrane.
The second substrate SUB2 includes insulating substrate 20, light shield layer BM, color filter layer CF, coating OC, alignment films AL2 etc..
The second substrate SUB2 is sometimes referred to as colour filtering chip basic board.Insulating substrate 20 is identical as insulating substrate 10, is glass substrate or scratches
The transparent substrates such as the resin substrate of property.Color filter layer CF includes red color filter CFR, green color filter CFG and blue color filter
CFB.Colour filter CFG is opposite with pixel electrode PE12.Other colour filter CFR and CFB are also opposite with other pixel electrode PE respectively.
Coating OC covers color filter layer CF.Coating OC is the organic insulating film formed by transparent organic material.Alignment films AL2 will
Coating OC covering.Alignment films AL1 and AL2 are for example formed by the material in horizontal alignment property.
Not shown in Fig. 6, above-mentioned master space part MSP and pair spacer SSP is formed by resin material, is configured at the first base
Between plate SUB1 and the second substrate SUB2.Master space part MSP makes to form regulation between first substrate SUB1 and the second substrate SUB2
Cell gap.Cell gap is, for example, 2~5 μm.First substrate SUB1 and the second substrate SUB2 is to be formed with defined unit
The state in gap is bonded using sealing element.
Liquid crystal layer LC is held in alignment films AL1 and alignment films between first substrate SUB1 and the second substrate SUB2
Between AL2.Liquid crystal layer LC includes liquid crystal molecule LM.Liquid crystal layer LC by eurymeric (dielectric constant anisotropy is positive) liquid crystal material
Or the liquid crystal material of minus (dielectric constant anisotropy is negative) is constituted.
Optical element OD1 containing polarizing film PL1 is adhered to insulating substrate 10.Optical element OD2 containing polarizing film PL2
It is adhered to insulating substrate 20.In addition, optical element OD1 and OD2 also may include phase plate, scattering layer, counnter attack as needed
Penetrate layer etc..
On display panel PNL as described above, electric field is not formed between pixel electrode PE12 and common electrode CE
Off state under, liquid crystal molecule LM between alignment films AL1 and AL2 along defined direction carry out initial stage be orientated.In the shutdown
Under state, the light irradiated from lighting device IL towards display panel PNL is absorbed by optical element OD1 and OD2, and is become and shown slinkingly
Show.On the other hand, be formed between pixel electrode PE12 and common electrode CE under the on-state of electric field, liquid crystal molecule LM because
Electric field and be orientated along the direction different from initial orientation direction, differently- oriented directivity can be controlled by electric field.It connects at this
Under logical state, a part of transmission optical component OD1 and OD2 of illumination light, and become and obviously show.
Fig. 7 is the cross-sectional view along the display panel PNL of C-D line shown in fig. 5.In addition, being located at insulating film 11 and insulation
The diagram of semiconductor layer between film 12 is omitted.Here, illustrating the base portion BS2 and drain electrode DE2 that connect pixel electrode PE12
The construction of interconnecting piece.
Drain electrode DE2 be located at signal wire S4~S6 same layer, formed by material identical with signal wire S6 etc..Insulating film
14 have the through hole CH31 of perforation to drain electrode DE2.
Connection electrode CN21 be located at metal wiring ML5 and ML6 same layer, by material identical with metal wiring ML6 etc.
It is formed.Connection electrode CN21 is contacted in through hole CH31 with drain electrode DE2.Insulating film 15 has perforation to connection electrode CN21
Through hole CH32.
Connection electrode CN22 be located at common electrode CE same layer, be formed by material identical with common electrode CE it is saturating
Prescribed electrode.Connection electrode CN22 is contacted in through hole CH32 with connection electrode CN21.Insulating film 16 has perforation electric to connecting
The through hole CH33 of pole CN22.Through hole CH3 shown in Fig. 4 contains through hole CH31~CH33 of diagram.
The base portion BS2 of pixel electrode PE12 is contacted in through hole CH33 with connection electrode CN22.In addition, pixel electrode
As long as PE12 is electrically connected to each other with drain electrode DE2, either connection electrode CN21 and CN22 or both sides also be can be omitted.
The base portion BS1 of pixel electrode PE11 is also identical, is electrically connected via connection electrode CN11 and CN12 with drain electrode DE1.
Pixel electrode PE11 and PE12 is covered by alignment films AL1.
Colour filter CFR is opposite with pixel electrode PE11, and colour filter CFG is opposite with pixel electrode PE12.Example shown in Fig. 7
In son, colour filter CFG is equivalent to the first colour filter, and colour filter CFR is equivalent to the second colour filter.
Master space part MSP is located at the surface of signal wire S5 and metal wiring ML5, connects with coating OC and alignment films AL1
Touching.Between metal wiring ML5 and master space part MSP, insulating film 15 and 16 contacts with each other, in addition, insulating film 16 and alignment films
AL1 contacts with each other.
But in recent years, the requirement of High precision is surging, and the trend with pixel electrode graph thinning, this makes it difficult to really
Protect the capacitor between pixel electrode and common electrode.In addition, in the case where showing image with 30Hz low frequency below, pixel electricity
It is elongated during the holding of position, it is possible to the reduction of the display quality associated with the variation of pixel potential occur.In particular, carry out
When colour display, for green compared with red and blue, relative visibility is high, therefore, the variation of the brightness of green pixel PG and red picture
Plain PR is compared with indigo plant pixel PB, is easily identified.In addition, the brightness of green pixel PG reduction as display image brightness reduction and
It is easily identified.
According to the present embodiment, in the region Chong Die with light shield layer BM, pixel electrode PE12 includes for expanding and sharing
The electrode portion EL1 and EL3 of the area of electrode CE overlapping.Therefore, and not including the pixel electrode PE11 of electrode portion EL1 and EL3
It compares, pixel electrode PE12 can form bigger capacitor CS2 between common electrode CE.Therefore, it is able to suppress and pixel
The reduction of the associated display quality of the variation of current potential.
Particularly because pixel electrode PE12 is configured at green pixel PG, so the capacitor CS2 of green pixel PG can be increased,
It is able to suppress the reduction of the display quality of green pixel PG.In addition, in above structure example, to expanded configuration in the picture of green pixel PG
The case where electrode portion of plain electrode PE12, is illustrated, but for the pixel electrode of other color pixels, heavy with light shield layer BM
Folded region can also extend electrode portion.Not only green pixel as a result, can also increase capacitor in the pixel of other colors.
The region Chong Die with light shield layer BM does not transmit illumination light, so helping being displayed without.Therefore, with light shield layer BM
The region of overlapping, even if the electrode portion of extension pixel electrode PE12, transmissivity is also almost without reduction.Therefore, it is configured with pixel
The brightness of the green pixel PG of electrode PE12 hardly reduces.
Then, the other structures of present embodiment are illustrated.
Fig. 8 is the cross-sectional view for indicating other structures example.Structural example shown in Fig. 8 is being wrapped compared with structural example shown in Fig. 7
On this point of including from the secondary spacer SSP of light shielding part B31 overlapping is different.
Secondary spacer SSP is located at the surface of signal wire S5 and metal wiring ML5, contacts with coating OC, with alignment films
AL1 interval.There are liquid crystal layer LC between secondary spacer SSP and alignment films AL1.
In this structural example, effect similar to the above can be also obtained.
Fig. 9 is the cross-sectional view for indicating other structures example.Structural example shown in Fig. 9 compared with structural example shown in Fig. 3, with
On this point light shielding part B32 of secondary spacer SSP overlapping is extended to from light shielding part B31 same area is different.In this structure
In example, as the pixel electrode for being configured at green pixel PG11, pixel electrode PE12 shown in Fig. 4 can be applied, as being configured at
The pixel electrode of green pixel PG13 can apply pixel electrode PE15 shown in Fig. 4.
Example according to this structure, the pixel being not only located near master space part MSP, and it is located at secondary spacer SSP's
Neighbouring pixel can also increase capacitor.
Figure 10 is the top view for indicating to be applicable to other pixel electrode PE12 of green pixel PG12 shown in Fig. 3.Figure 10
Shown in structural example compared with structural example shown in Fig. 4, pixel electrode PE12 include three band electrode Pa21~Pa23 this
A little upper difference.In addition, pixel electrode PE11 also includes three band electrode Pa11~Pa13.
Pixel electrode PE12 include base portion BS2, band electrode Pa21~Pa23, electrode portion EL1~EL3, edge part EA and
EB.Base portion BS2 has width W11.X is arranged band electrode Pa21~Pa23 interval D11 along a first direction, and along side
Extend to D2.Band electrode Pa21~Pa23 is respectively provided with equal width W12.Electrode portion EL1 is equivalent to band electrode
The part that Pa21~Pa23 is connect with base portion BS2.Electrode portion EL1 has width W13.Width W13 is equal to band electrode Pa21
The sum of the respective width W12 of~Pa23 and respective interval D 11.Edge part EA and EB are located at the most peripheral of pixel electrode PE12.
Edge part EA is contained in band electrode Pa21, and edge part EB is contained in band electrode Pa23.
In this pixel electrode PE12, electrode portion EL1 and EL3 and band electrode Pa21~Pa23 and common electrode CE weight
It is folded.Light shielding part B31 is not only Chong Die with master space part MSP, also Chong Die with base portion BS1, base portion BS2 and electrode portion EL1.In addition, hiding
Photosphere BM is Chong Die with electrode portion EL2 and EL3.
In this structural example, effect similar to the above can be also obtained.
Figure 11 is the top view for indicating the other structures example of pixel layout and light shield layer BM.Light shield layer BM is in lattice-shaped shape
At.X is configured with equal pitch along a first direction by be overlapped light shielding part B11~B16 respectively with signal wire S1~S6.With scan line G1
The light shielding part B21 and B22 being overlapped respectively with G2 along second direction Y alternate constant.The light shielding part Chong Die with master space part MSP
B31 is extended than the light shielding part B32 Chong Die with secondary spacer SSP.
This light shield layer BM surround respectively red pixel PR21~PR24, green pixel PG21~PG24 and blue pixel PB21~
PB24.Red pixel PR21, green pixel PG21, blue pixel PB21, red pixel PR22, green pixel PG22 and indigo plant pixel PB22 are being swept
It retouches between line G1 and G2 that X is arranged successively along a first direction, and extends respectively along direction D2.Red pixel PR23, green pixel
X is arranged successively along a first direction by PG23, blue pixel PB23, red pixel PR24, green pixel PG24 and blue pixel PB24, and point
Do not extend along direction D1.
Red color filter CFR is configured on red pixel PR21~PR24, configured with green on green pixel PG21~PG24
Color colour filter CFG is configured with blue color filter CFB on blue pixel PB21~PB24.It is configured on green pixel PG21 or PG22
There is pixel electrode PE12 shown in Fig. 4 or pixel electrode PE12 shown in Fig. 10.
In this structural example, effect similar to the above can be also obtained.
Figure 12 is the top view for indicating the other structures example of pixel layout and light shield layer BM.Structural example shown in Figure 12 and figure
Structural example shown in 11 is compared, the light shielding part B32 Chong Die with secondary spacer SSP and the light shielding part B31 for being overlapped in master space part MSP
It is comparably different on this point of extension.
In this structural example, effect similar to the above can be also obtained.
As described above, according to the present embodiment, it can obtain can inhibit the display device of display quality reduction.
More than, several embodiments of the utility model are illustrated, but these embodiments are only example, are not had
There is the range for limiting utility model.These new embodiments can be implemented by various other modes, not depart from reality
With can be carried out in the range of novel main idea it is various omit, displacement, change.These embodiments and modifications thereof are included in practical
It in novel range or main idea, also, include in utility model documented by claims and the range impartial with it.
Claims (14)
1. a kind of display device comprising switch element, pixel electrode, common electrode, by the pixel electrode and it is described share
Inorganic insulating membrane that electrode clips, light shielding part,
The display device is characterized in that the pixel electrode includes:
Base portion has the first width in a first direction, opening portion and the inorganic insulating membrane via the common electrode
Contact hole, be electrically connected with the switch element；
First band electrode has second width smaller than first width in said first direction；With
First electrode portion has third smaller than first width and bigger than second width in said first direction
Width connects first band electrode and the base portion,
The first electrode portion and first band electrode are Chong Die with the common electrode,
The light shielding part is Chong Die with the base portion and the first electrode portion.
2. display device according to claim 1, it is characterised in that:
The pixel electrode further includes the second band electrode,
First band electrode and second band electrode arrange in said first direction,
The first electrode portion connects second band electrode and the base portion,
Second band electrode has second width in said first direction, Chong Die with the common electrode.
3. display device according to claim 2, it is characterised in that:
It further include the first signal wire and second signal line,
The pixel electrode further include: the first edge portion across the first electrode portion and first band electrode；With across institute
The second edge portion in first electrode portion and second band electrode is stated,
The first edge portion is opposite with first signal wire,
The second edge portion is opposite with the second signal line,
Long more Chong Die with the light shielding part than the second edge portion of the first edge portion length Chong Die with the light shielding part
Degree length.
4. display device according to claim 3, it is characterised in that:
The length of first band electrode is shorter than the length of second band electrode.
5. display device according to claim 3, it is characterised in that:
The pixel electrode further include:
There is the second electrode portion of fourth width bigger than the third width in said first direction；
In said first direction with the third width by the second electrode portion and first band electrode and institute
The third electrode portion of the second band electrode connection is stated,
The third electrode portion is Chong Die with the common electrode.
6. display device according to claim 1, it is characterised in that:
It further include the spacer Chong Die with the light shielding part,
The spacer and the base portion arrange in said first direction.
7. display device according to claim 1, it is characterised in that:
It further include the green color filter opposite with the pixel electrode.
8. a kind of display device characterized by comprising
First pixel electrode and the second pixel electrode；
Signal wire between first pixel electrode and second pixel electrode；With
Common electrode with opening portion,
First pixel electrode includes the first base portion positioned at the opening portion, the first band electrode, the connection first band
The first electrode portion of shape electrode and first base portion,
The first electrode portion and first band electrode are Chong Die with the common electrode,
Second pixel electrode includes the second band for being located at the second base portion of the opening portion and connecting with second base portion
Shape electrode,
Second band electrode is Chong Die with the common electrode,
Second pixel electrode described in first pixel electrode area ratio Chong Die with the common electrode and the common electrode
The area of overlapping is big.
9. display device according to claim 8, it is characterised in that:
The length of first band electrode is shorter than the length of second band electrode.
10. display device according to claim 9, which is characterized in that further include:
Spacer between first base portion and second base portion；With
The light shielding part Chong Die with first base portion, second base portion, the spacer and the first electrode portion.
11. display device according to claim 10, it is characterised in that:
Further include first colour filter opposite with first pixel electrode and the color opposite with second pixel electrode with
The second different colour filter of first colour filter.
12. display device according to claim 11, it is characterised in that:
First colour filter is green color filter.
13. display device according to claim 12, which is characterized in that further include:
Cover the alignment films of first pixel electrode and second pixel electrode；With
The coating of first colour filter and second colour filter is covered,
The spacer is contacted with the coating and the alignment films.
14. display device according to claim 12, which is characterized in that further include:
Cover the alignment films of first pixel electrode and second pixel electrode；With
The coating of first colour filter and second colour filter is covered,
The spacer contacted with the coating and with the alignment films interval.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-037620 | 2018-03-02 | ||
| JP2018037620A JP2019152746A (en) | 2018-03-02 | 2018-03-02 | Display |
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| CN209433162U true CN209433162U (en) | 2019-09-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534545A (en) * | 2020-04-17 | 2021-10-22 | 株式会社日本显示器 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534545A (en) * | 2020-04-17 | 2021-10-22 | 株式会社日本显示器 | Display device |
| CN113534545B (en) * | 2020-04-17 | 2024-04-26 | 株式会社日本显示器 | Display device |
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