CN105629617A - Display base plate and display device - Google Patents

Display base plate and display device Download PDF

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Publication number
CN105629617A
CN105629617A CN201610204430.4A CN201610204430A CN105629617A CN 105629617 A CN105629617 A CN 105629617A CN 201610204430 A CN201610204430 A CN 201610204430A CN 105629617 A CN105629617 A CN 105629617A
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CN
China
Prior art keywords
metal level
layer
base plate
transparency conducting
display base
Prior art date
Application number
CN201610204430.4A
Other languages
Chinese (zh)
Inventor
冯博
马禹
桑琦
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN201610204430.4A priority Critical patent/CN105629617A/en
Publication of CN105629617A publication Critical patent/CN105629617A/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer

Abstract

The invention discloses a display base plate and a display device. The display base plate comprises a substrate base plate, and a first metal layer, at least one insulating layer and a transparent conductive layer which are arranged on the substrate base plate in sequence, wherein an overlap joint region is arranged for the transparent conductive layer and the first metal layer; the insulating layer has a pattern on the overlap joint region; and an annular through hole, which is used for communicating the first metal layer and the transparent conductive layer and is formed in the periphery of the overlap joint region, is formed in the insulating layer. According to the display base plate provided by the embodiment of the invention, the insulating layer is internally provided with the annular through hole formed in the periphery of the overlap joint region, the first metal layer and the transparent conductive layer are communicated through the annular through hole, and the insulating layer has the pattern on the overlap joint region of the transparent conductive layer and the first metal layer, so that concave section difference on the overlap joint region can be reduced, the problem that a liquid crystal alignment film is not uniformly dispersed is alleviated, and the yield of products is increased.

Description

A kind of display base plate and display unit

Technical field

The present invention relates to technique of display field, espespecially a kind of display base plate and display unit.

Background technology

Thin Film Transistor-LCD (ThinFilmTransistorLiquidCrystalDisplay, TFT-LCD) be at present conventional flat-panel monitor, TFT-LCD indicating meter with its low voltage, low-power consumption, to be suitable for circuit integrated and lightly the advantage such as convenient and be subject to research and apply widely.

In TFT-LCD array substrate of the prior art, crossing hole place, transparency conducting layer ITO (Indiumtinoxide) directly contacts with metal level (such as grid is with layer metal), the lap-joint of ITO layer and metal level is a depression relative to periphery, and the degree of depth of depression is approximately 104Ethylmercurichlorendimide magnitude, the section difference of this kind of depression is unfavorable for the even diffusion of liquid crystal orientation film, finally causes display frame to produce spot, thus affects the good rate of product.

Summary of the invention

The embodiment of the present invention provides a kind of display base plate and display unit, causes the problem of the uneven diffusion of liquid crystal orientation film in order to alleviate the section difference crossing hole place depression existed in prior art.

Therefore, a kind of display base plate that the embodiment of the present invention provides, comprising: underlay substrate, the first metal level arranged successively on described underlay substrate, at least one layer insulating and transparency conducting layer; Wherein,

Described transparency conducting layer and described first metal level have overlapping regions;

Described insulation layer has pattern in described overlapping regions, and described insulation layer has be arranged on described overlapping regions periphery cross hole for the ring-type of the first metal level and described transparency conducting layer described in conducting.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, also comprise: the 2nd metal level being arranged between described first metal level and described transparency conducting layer; Described 2nd metal level has pattern in described overlapping regions, and the pattern that described 2nd metal level has in described overlapping regions is electrically connected with described first metal level and described transparency conducting layer respectively.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, described 2nd metal level and described transparency conducting layer are directly electrically connected in described overlapping regions, and described 2nd metal level and described first metal level are crossed hole by described ring-type and be electrically connected.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, described ring-type crosses the material all filling described transparency conducting layer in hole, or, described ring-type crosses the material all filling described 2nd metal level in hole.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, described 2nd metal level and described first metal level are directly electrically connected in overlapping regions, and described 2nd metal level and described transparency conducting layer are crossed hole by described ring-type and be electrically connected.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, described 2nd metal level and described transparency conducting layer are crossed hole by described ring-type and are electrically connected, and described 2nd metal level and described first metal level are crossed hole by described ring-type and be electrically connected.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, described ring-type crosses the material all filling described transparency conducting layer in hole; Or, described ring-type crosses the material that be partially filled described transparency conducting layer of hole on described 2nd metal level, the material being partially filled described 2nd metal level under described 2nd metal level.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, described display base plate is array substrate.

In a kind of possible enforcement mode, in the above-mentioned display base plate that the embodiment of the present invention provides, described first metal level is gate metal layer, and described 2nd metal level is data wire metal layer; Or, described 2nd metal level is gate metal layer, and described first metal level is data wire metal layer;

Described transparency conducting layer is pixel electrode layer or common electrode layer.

The embodiment of the present invention additionally provides a kind of display unit, comprises above-mentioned display base plate.

The useful effect of the present invention is as follows:

A kind of display base plate that the embodiment of the present invention provides, comprises underlay substrate, the first metal level arranged successively on described underlay substrate, at least one layer insulating and transparency conducting layer; Wherein, described transparency conducting layer and described first metal level have overlapping regions; Described insulation layer has pattern in described overlapping regions, and described insulation layer has be arranged on described overlapping regions periphery cross hole for the ring-type of the first metal level and described transparency conducting layer described in conducting. A kind of display base plate that the embodiment of the present invention provides, there is ring-type in a insulating layer that be arranged on overlapping regions periphery and cross hole, hole conducting first metal level and transparency conducting layer can be crossed by this ring-type, and owing to insulation layer has pattern in the overlapping regions of transparency conducting layer and the first metal level, such that it is able to the section reducing overlapping regions place depression is poor, alleviate the problem that liquid crystal aligning membrane diffusion is uneven, increase the good rate of product.

Accompanying drawing explanation

One of structural representation of a kind of display base plate that Fig. 1 provides for the embodiment of the present invention;

The vertical view of a kind of display base plate that Fig. 2 provides for the embodiment of the present invention;

The two of the structural representation of a kind of display base plate that Fig. 3 provides for the embodiment of the present invention;

The three of the structural representation of a kind of display base plate that Fig. 4 provides for the embodiment of the present invention;

The four of the structural representation of a kind of display base plate that Fig. 5 provides for the embodiment of the present invention;

The five of the structural representation of a kind of display base plate that Fig. 6 provides for the embodiment of the present invention;

The six of the structural representation of a kind of display base plate that Fig. 7 provides for the embodiment of the present invention.

Embodiment

The problem of the uneven diffusion of liquid crystal orientation film is caused for the section difference crossing hole place depression existed in prior art. Below in conjunction with accompanying drawing, a kind of display base plate provide the embodiment of the present invention and the embodiment of display unit are described in detail.

Embodiments provide a kind of display base plate, as shown in Figure 1, comprising: underlay substrate 01, the first metal level 02, at least one layer insulating 03 and the transparency conducting layer 04 arranged successively on underlay substrate 01; Wherein,

Transparency conducting layer 04 and the first metal level 02 have overlapping regions A;

Insulation layer 03 has pattern at overlapping regions A, and insulation layer 03 has be arranged on overlapping regions A periphery cross hole for the ring-type of conducting first metal level 02 and transparency conducting layer 04.

The display base plate that the embodiment of the present invention provides, insulation layer 03 has the ring-type being arranged on overlapping regions A periphery and crosses hole, hole conducting first metal level 02 and transparency conducting layer 04 can be crossed by this ring-type, and owing to insulation layer 03 has pattern at the overlapping regions A of transparency conducting layer 04 and the first metal level 02, such that it is able to the section reducing overlapping regions A place depression is poor, alleviate the problem that liquid crystal aligning membrane diffusion is uneven, increase the good rate of product.

The vertical view of a kind of display base plate that Fig. 2 provides for the embodiment of the present invention, in order to reach better hint effect, underlay substrate not shown in FIG. and transparency conducting layer, in actual applications, underlay substrate is positioned at below the first metal level 02, transparency conducting layer covers above insulation layer 03 and the first metal level 02, region representation overlapping regions A within thick frame line in Fig. 2, can find out that insulation layer 03 has pattern in lap-joint, and overlapping regions A periphery is provided with ring-type and crosses hole in insulation layer 03, crossing hole by this ring-type can conducting first metal level 02 and transparency conducting layer.

Further, as shown in Figure 3, the display base plate that the embodiment of the present invention provides can also comprise: the 2nd metal level 05 being arranged between the first metal level 02 and transparency conducting layer 04; 2nd metal level 05 has pattern at overlapping regions A, and the pattern that the 2nd metal level 05 has at overlapping regions A is electrically connected with the first metal level 02 and transparency conducting layer 04 respectively.

By arranging the 2nd metal level 05 between the first metal level 02 and transparency conducting layer 04, the section that can reduce overlapping regions A place depression further is poor, and it is relation in parallel between the 2nd metal level 05 increased and the first metal level 02 and transparency conducting layer 04, such that it is able to reduce the overlap resistance at overlapping regions A place, with the signal attenuation reduced in signals transmission.

Below for the structure shown in Fig. 3, overlap resistance overlapping regions place arranging the 2nd metal level and not arranging the 2nd metal level is analyzed, and wherein, uses RITORepresent the resistance of transparency conducting layer, use R1Represent the resistance of the first metal level, use R2Represent the resistance of the 2nd metal level, use RviaRepresent the resistance of overlapping regions.

When not arranging the 2nd metal level, transparency conducting layer and the first metal level are in parallel, and overlap resistance is:

R v i a = 1 1 R I T O + 1 R 1 ,

When arranging the 2nd metal level, transparency conducting layer, the 2nd metal level and the first metal level are in parallel, and overlap resistance is:

R ′ v i a = 1 1 R I T O + 1 R 1 + 1 R 2 ,

Contrast is it will be seen that R 'viaIt is less than Rvia, so after arranging the 2nd metal level, reducing overlap resistance.

Specifically, as shown in Figure 3 or Figure 4, in the display base plate that the bright embodiment of we provides, the 2nd metal level 05 is directly electrically connected at overlapping regions A with transparency conducting layer 04, and the 2nd metal level 05 and the first metal level 02 are crossed hole by ring-type and be electrically connected.

Ring-type crosses the material all filling transparency conducting layer in hole, as shown in Figure 3, or, ring-type crosses the material all filling the 2nd metal level in hole, as shown in Figure 4.

Owing to the 2nd metal level 05 is directly electrically connected at overlapping regions A with transparency conducting layer 04, then naked layer between the 2nd metal level 05 and transparency conducting layer 04,2nd metal level 05 and the first metal level 02 are crossed hole by ring-type and are electrically connected, then there is insulation layer between the 2nd metal level 05 and the first metal level 02, ring-type crosses the material that can all fill transparency conducting layer in hole, it is also possible to all fill the material of the 2nd metal level.

Or, specifically, as shown in Figure 5, in the display base plate that the bright embodiment of we provides, the 2nd metal level 05 and the first metal level 02 are directly electrically connected at overlapping regions A, and the 2nd metal level 05 is crossed hole with transparency conducting layer 04 by ring-type and is electrically connected.

Owing to the 2nd metal level 05 and the first metal level 02 are directly electrically connected, insulation layer is not had between 2nd metal level 05 and the first metal level 02, insulation layer 03 is between the 2nd metal level 05 and transparency conducting layer 04, and ring-type is crossed hole and can only be filled by the material of transparency conducting layer.

Or, specifically, as is seen in fig. 6 or fig. 7, in the display base plate that the bright embodiment of we provides, the 2nd metal level 05 is crossed hole with transparency conducting layer 04 by ring-type and is electrically connected, and the 2nd metal level 05 and the first metal level 02 are crossed hole by ring-type and be electrically connected.

Ring-type crosses the material all filling transparency conducting layer in hole, as shown in Figure 6; Or, ring-type crosses the material being partially filled transparency conducting layer on Kong bis-metal level 05, the material being partially filled the 2nd metal level under the 2nd metal level 05, as shown in Figure 7.

Cross hole with transparency conducting layer 04 by ring-type due to the 2nd metal level 05 to be electrically connected, 2nd metal level 05 and the first metal level 02 are crossed hole by ring-type and are electrically connected, so all there is insulation layer 03 between the 2nd metal level 05 and transparency conducting layer 04 and between the 2nd metal level 05 and the first metal level 02, when filling ring-type and cross hole, can all fill by the material of transparency conducting layer, or, ring-type crosses the material being partially filled transparency conducting layer on Kong bis-metal level 05, the material being partially filled the 2nd metal level under the 2nd metal level 05.

In the specific implementation, poor in order to reduce the section of overlapping regions place depression further, multilayer dielectric layer can also be set between the first metal level and transparency conducting layer, or increase multiple layer metal layer, the number of plies of insulation layer and metal level is not limited by the present invention, the situation that above-mentioned enforcement mode is just preferred embodiment not all.

Further, in the display base plate that the bright embodiment of we provides, above-mentioned display base plate can be array substrate. In the specific implementation, above-mentioned display base plate can also be subtend substrate or touch substrate etc., it is not limited herein.

Specifically, in the display base plate that the bright embodiment of we provides, the first metal level can be gate metal layer, and the 2nd metal level can be data wire metal layer; Or, the 2nd metal level can be gate metal layer, and the first metal level can be data wire metal layer; Transparency conducting layer can be pixel electrode layer or common electrode layer.

Can to be gate metal can also be above-mentioned gate metal layer and other metals at same layer of grid, in making processes and gate metal can make in same step with gate metal at other metals of same layer. Data wire metal layer can be and other metals at same layer of data line, in making processes and data line can make in same step with data line at other metals of same layer.

Specifically, in the display base plate that the bright embodiment of we provides, above-mentioned insulation layer can be gate insulator or data line insulation layer, it is possible to thinks other insulation layers.

Based on same invention design, embodiments provide a kind of display unit, comprise above-mentioned display base plate. This display unit can be applied to any product or parts with display function such as mobile phone, panel computer, televisor, indicating meter, notebook computer, digital phase frame, navigating instrument. The principle dealt with problems due to this display unit is similar to above-mentioned display base plate, and therefore the enforcement of this display unit see the enforcement of above-mentioned display base plate, can repeat part and repeat no more.

The display base plate that the embodiment of the present invention provides and display unit, there is ring-type in a insulating layer that be arranged on overlapping regions periphery and cross hole, hole conducting first metal level and transparency conducting layer can be crossed by this ring-type, and owing to insulation layer has pattern in the overlapping regions of transparency conducting layer and the first metal level, such that it is able to the section reducing overlapping regions place depression is poor, alleviate the problem that liquid crystal aligning membrane diffusion is uneven, increase the good rate of product. In addition, by arranging the 2nd metal level between the first metal level and transparency conducting layer, the section that can reduce overlapping regions place depression further is poor, and it is relation in parallel between the 2nd metal level increased and the first metal level and transparency conducting layer, such that it is able to reduce the overlap resistance at overlapping regions place.

Obviously, the present invention can be carried out various change and modification and not depart from the spirit and scope of the present invention by the technician of this area. Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these change and modification.

Claims (10)

1. a display base plate, it is characterised in that, comprising: underlay substrate, the first metal level arranged successively on described underlay substrate, at least one layer insulating and transparency conducting layer; Wherein,
Described transparency conducting layer and described first metal level have overlapping regions;
Described insulation layer has pattern in described overlapping regions, and described insulation layer has be arranged on described overlapping regions periphery cross hole for the ring-type of the first metal level and described transparency conducting layer described in conducting.
2. display base plate as claimed in claim 1, it is characterised in that, also comprise: the 2nd metal level being arranged between described first metal level and described transparency conducting layer; Described 2nd metal level has pattern in described overlapping regions, and the pattern that described 2nd metal level has in described overlapping regions is electrically connected with described first metal level and described transparency conducting layer respectively.
3. display base plate as claimed in claim 2, it is characterised in that, described 2nd metal level and described transparency conducting layer are directly electrically connected in described overlapping regions, and described 2nd metal level and described first metal level are crossed hole by described ring-type and be electrically connected.
4. display base plate as claimed in claim 3, it is characterised in that, described ring-type crosses the material all filling described transparency conducting layer in hole, or, described ring-type crosses the material all filling described 2nd metal level in hole.
5. display base plate as claimed in claim 2, it is characterised in that, described 2nd metal level and described first metal level are directly electrically connected in overlapping regions, and described 2nd metal level and described transparency conducting layer are crossed hole by described ring-type and be electrically connected.
6. display base plate as claimed in claim 2, it is characterised in that, described 2nd metal level and described transparency conducting layer are crossed hole by described ring-type and are electrically connected, and described 2nd metal level and described first metal level are crossed hole by described ring-type and be electrically connected.
7. display base plate as claimed in claim 6, it is characterised in that, described ring-type crosses the material all filling described transparency conducting layer in hole; Or, described ring-type crosses the material that be partially filled described transparency conducting layer of hole on described 2nd metal level, the material being partially filled described 2nd metal level under described 2nd metal level.
8. display base plate as described in item as arbitrary in claim 1-7, it is characterised in that, described display base plate is array substrate.
9. display base plate as claimed in claim 8, it is characterised in that, described first metal level is gate metal layer, and described 2nd metal level is data wire metal layer; Or, described 2nd metal level is gate metal layer, and described first metal level is data wire metal layer;
Described transparency conducting layer is pixel electrode layer or common electrode layer.
10. a display unit, it is characterised in that, comprise the display base plate described in the arbitrary item of claim 1-9.
CN201610204430.4A 2016-04-01 2016-04-01 Display base plate and display device CN105629617A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108198826A (en) * 2018-01-24 2018-06-22 京东方科技集团股份有限公司 Array substrate and preparation method thereof
CN108761933A (en) * 2018-05-28 2018-11-06 武汉华星光电技术有限公司 The manufacturing method of array substrate, liquid crystal display and array substrate

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CN103744213A (en) * 2013-12-25 2014-04-23 合肥京东方光电科技有限公司 Array base-plate and preparation method thereof
CN104157612A (en) * 2014-08-21 2014-11-19 深圳市华星光电技术有限公司 Manufacture method of TFT array substrate, and structure of the TFT array substrate
CN105304649A (en) * 2015-10-28 2016-02-03 京东方科技集团股份有限公司 Array substrate and making method thereof, display panel and display device

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Publication number Priority date Publication date Assignee Title
US20030222315A1 (en) * 2002-04-24 2003-12-04 E Ink Corporation Backplanes for display applications, and components for use therein
KR20040031397A (en) * 2002-10-05 2004-04-13 엘지.필립스 엘시디 주식회사 Liquid crystal display panel and fabricating method thereof
CN101562162A (en) * 2009-05-12 2009-10-21 陈俊 Pad structure of panel display device
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108198826A (en) * 2018-01-24 2018-06-22 京东方科技集团股份有限公司 Array substrate and preparation method thereof
CN108761933A (en) * 2018-05-28 2018-11-06 武汉华星光电技术有限公司 The manufacturing method of array substrate, liquid crystal display and array substrate

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