CN102543037A - Field emission display - Google Patents

Field emission display Download PDF

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Publication number
CN102543037A
CN102543037A CN2012100675169A CN201210067516A CN102543037A CN 102543037 A CN102543037 A CN 102543037A CN 2012100675169 A CN2012100675169 A CN 2012100675169A CN 201210067516 A CN201210067516 A CN 201210067516A CN 102543037 A CN102543037 A CN 102543037A
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CN
China
Prior art keywords
grid
substrate
setting area
data electrode
emission display
Prior art date
Application number
CN2012100675169A
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Chinese (zh)
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CN102543037B (en
Inventor
刘志伟
陈盈颖
王仓鸿
Original Assignee
友达光电股份有限公司
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Priority to TW100144483 priority Critical
Priority to TW100144483A priority patent/TWI442439B/en
Application filed by 友达光电股份有限公司 filed Critical 友达光电股份有限公司
Publication of CN102543037A publication Critical patent/CN102543037A/en
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Publication of CN102543037B publication Critical patent/CN102543037B/en

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Abstract

The present invention discloses a field emission display comprising a substrate, a data electrode, a grid electrode, a grid electrode drive unit, an emitter installing region and a plurality of emitters; wherein the grid electrode is formed on the data electrode, the grid electrode and the data electrode form at one overlay region; the plurality of emitters are arranged in the emitter installing region over the data electrode, the emitter installing region is arranged in the overlay region; and the grid electrode drive unit is arranged at a first side of the substrate, and outputs a grid electrode voltage to drive the grid electrode. The present invention makes improvements in relative position relation between the emitter installing region and the data electrode on the substrate of the field emission display and nonuniform brightness. In particular, when the nonuniform brightness of the field emission display is caused by voltage drop of the grid electrode voltage due to impedance, the defect can be improved by properly adjusting the emitter installing region.

Description

Field Emission Display

Technical field

The present invention relates to a kind of structure of Field Emission Display, particularly relate to the structure that transmitter setting area and drive element of the grid on a kind of Field Emission Display substrate are provided with.

Background technology

Shown in Figure 1 is the vertical view of the Field Emission Display of prior art, and transmitter setting area 54 intersperses among does not consider especially on the data electrode 53 that it is provided with the position.The storing position of transmitter 57 then is to be determined by the position that nano particle (nano particle) intersperses among on the substrate 51.Because spin coater (spin coater) is when spilling nano particle, because of spin coater places the event of substrate center, nano particle is because of the relation of centrifugal force, and the distribution density on substrate 51 just presents the inconsistent situation of density.And Field Emission Display will be because of the inconsistent shortcoming that presents brightness irregularities of the density density of transmitter 57.Moreover before nano particle spilt cloth, established each layer structure also influenced nano particle and drops on the position on the substrate on the substrate.

Another factor that influences brightness is the problem of pressure drop of gate drive voltage Vg.When drive element of the grid 55 is exported grid voltage Vg with driving grid 52; Grid voltage Vg is sent to second side one side of drive element of the grid 55 (for example away from) of substrate 51 along first direction by first side of substrate 51 side of drive element of the grid 55 (for example near), grid voltage Vg can because of impedance so pressure drop is arranged.This pressure drop also will make the suffered voltage difference of the Field Emission Display of diverse location and cause brightness disproportionation.

Therefore, the problem of Field Emission Display brightness disproportionation exists, and the method for needing badly solves.

Summary of the invention

The object of the invention is providing a kind of even brightness Field Emission Display exactly.

The present invention proposes a kind of Field Emission Display, mainly comprises substrate, data electrode, grid, drive element of the grid transmitter setting area and a plurality of transmitter.Wherein, grid is formed on the data electrode, and forms at least one overlay region with data electrode.A plurality of transmitters are arranged in the transmitter setting area of data electrode top, and the transmitter setting area is arranged in the overlay region.Drive element of the grid is placed in first side of substrate, and exports a grid voltage with driving grid.Wherein, the transmitter setting area has comprised first setting area and second setting area.First setting area is positioned at than the side near drive element of the grid.Be positioned at than the opposite side away from drive element of the grid, and the area of first setting area is less than the area of second setting area in second setting area.Wherein, first setting area and second setting area are that the Central Line with the data electrode in the overlay region is the boundary.

In preferred embodiment of the present invention, on the substrate of above-mentioned Field Emission Display, second side direction of the past substrate of data electrode has and has a teat at least, and the transmitter setting area is placed on the teat.

Field Emission Display brightness provided by the invention is even.

For let above-mentioned and other purposes of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and conjunction with figs., elaborates as follows.

Description of drawings

Fig. 1 is depicted as the vertical view of existing field emission device display base plate.

Fig. 2 is depicted as the field emission device display base plate vertical view of first embodiment of the invention.

Fig. 3 A is depicted as the sectional view of A-A ' among Fig. 2.

Fig. 3 B is depicted as the sectional view of B-B ' among Fig. 2.

Fig. 3 C is depicted as the sectional view of C-C ' among Fig. 2.

Fig. 4 is depicted as another sectional view of A-A ' among Fig. 2.

Fig. 5 is depicted as the field emission device display base plate vertical view of second embodiment of the invention.

Fig. 6 A is depicted as the sectional view of A-A ' among Fig. 5.

Fig. 6 B is depicted as the sectional view of B-B ' among Fig. 5.

Fig. 6 C is depicted as the sectional view of C-C ' among Fig. 5.

[main description of reference numerals]

1,11,51: substrate

2,12,52: grid

3,13,53: data electrode

4,14,54: the transmitter setting area

5,15,55: drive element of the grid

6: the second metal levels

7,17,57: transmitter

8: gate metal layer

9: impedance layer

10: the first insulation courses

21,121: the grid teat

22,122: the gate line that vertically disposes

31,131: the data electrode teat

32,132: the data line that vertically disposes

41,141: first setting area

42,142: second setting area

L: data electrode teat Central Line

Vg: grid voltage

Embodiment

Below will implementation content of the present invention be described with reference to Fig. 2, Fig. 3 A-3C.Fig. 2 illustrates the vertical view of Field Emission Display.Fig. 3 A, 3B, 3C then illustrate the sectional view of A-A ', B-B ', C-C ' among the figure (2) respectively.As shown in Figure 2, Field Emission Display has data electrode 3 and is formed on the substrate 1 with its pattern respectively with grid 2.Transmitter setting area 4 is arranged on the data electrode 3, and 7 of transmitters are placed within the transmitter setting area 4.In this embodiment, data electrode 3 has the overlapping region with grid 2, and transmitter setting area 4 then is arranged in the overlapping region of data electrode 3 and grid 2.Drive element of the grid 5 outputting drive voltage Vg, in order to driving grid 2, and drive element of the grid 5 is placed in the left side of substrate 1.After understanding spirit of the present invention, drive element of the grid 5 is placed in substrate 1 right side also can reaches identical effect.The only convenient explanation of present embodiment does not limit the left side that drive element of the grid 5 can only be placed in substrate 1.

Drive element of the grid 5 output grid voltage Vg are sent to second side of substrate 1 by first side of substrate 1, for example are sent to the right side by the left side.But grid voltage Vg is because the signal transmission is far away and the event of impedance, and voltage can be successively decreased to second side (right side) of substrate 1 by first side (left side) of substrate 1 gradually.As shown in Figure 2, grid voltage Vg is 35 volts by the left side at substrate 1 and is decremented to about 33 volts to the right side of substrate 1 gradually.Therefore, if hypothesis transmitter 7 is under the uniform situation in the density on the substrate 1, Field Emission Display is higher than the brightness on right side in the brightness meeting near the left side of substrate 1.Because nano particle spills the density that is distributed on the substrate 1 and inhomogeneous, the density of transmitter 7 is also just inhomogeneous but in fact.Through suitable transmitter setting area 4 must be set, can improve because of grid voltage Vg Field Emission Display that pressure drop causes in the brightness meeting shortcoming higher than the brightness on right side near the left side of substrate 1.

Below then explain in the present embodiment, how transmitter setting area 4 is set.Among this embodiment; As shown in Figure 2; Grid 2 comprises many vertically gate lines 22 of configuration, and each gate line 22 that vertically disposes comprises a plurality of grid protuberances 21 that extend to the substrate left side, and data electrode 3 comprises many vertically data lines 32 of configuration; Each data line 32 that vertically disposes comprises a plurality of data electrode protuberances 31 that extend to the substrate right side, and each transmitter setting area 4 is positioned at overlapping region of grid protuberance 21 with the data electrode protuberance 31 of each group subtend extension.And for example shown in Fig. 3 A-3C sectional view; Transmitter setting area 4 is positioned at data electrode 3 tops; And comprise first setting area 41 and 42, the first setting areas 41, second setting area and be positioned at the side near drive element of the grid 5, and second setting area 42 is positioned at the opposite side away from drive element of the grid 5; And the area of first setting area 41 is less than the area of second setting area 42, and first setting area 41 and this second setting area 42 are L of Central Line with data electrode protuberance 31 are the boundary.Even the area of first setting area 41 can be zero, that is transmitter 7 can only be arranged at second setting area 42 of transmitter setting area 4.

The situation of first side (left side) of substrate is described below.Shown in Fig. 2 and Fig. 3 A, grid voltage Vg is 35 volts, and second setting area 42 is because of being arranged at the lower zone of nano-particles density among Fig. 3 A, and the density of transmitter 7 is also lower, so transmitter 7 luminous intensities are lower.And the situation of second side (right side) of substrate and for example Fig. 2 and Fig. 3 C and the following stated.Grid voltage Vg is merely 33 volts because of the event of pressure drop, but second setting area 42 is to be arranged at the higher zone of nano-particles density among Fig. 3 C, and the density of transmitter 7 is higher on the contrary, so transmitter 7 luminous intensities are stronger.Because the brightness of Field Emission Display all presents positive correlation with grid voltage Vg and transmitter 7 luminous intensities, but the problem that just offset gate pole tension Vg pressure drop like this is produced.Through suitable transmitter setting area 4 must be set; Adjusted transmitter 7 in the density of first side (left side) of substrate 1 and density in second side (right side) of substrate 1; Indirectly adjustment transmitter 7 reaches and improves the problem of Field Emission Display because of grid voltage Vg brightness irregularities that pressure drop causes in the luminous intensity of first side (left side) of substrate 1 and luminous intensity in second side (right side) of substrate 1.

Shown in Figure 4 is the sectional view of A-A ' among Fig. 2.Below specify the sectional view of this embodiment more.Data electrode 3 is formed by the first metal layer (for example: nickel, chromium); 2 of grids are to be formed by two metal layers at least; Be to be formed with 8 of grid metal levels by second metal level 6 in this embodiment, second metal level 6 can be an aluminium, and grid metal level 8 can be a chromium.

After data electrode 3 forms; Impedance layer (resist layer) 9 and first insulation course 10 (for example: silicon dioxide); Be covered in respectively on the data electrode 3, and first insulation course 10 places on the impedance layer 9, then form second metal level 6 in the grid 2 on first insulation course 10.Then carry out the spreading nano particle, nano particle spills on substrate 1 via spin coater (spin coater), and nano particle is because of formed the relation of each layer structure on centrifugal force and the substrate 1, and its distribution density will present the inconsistent situation of density.8 of grid metal levels are formed on second metal level 6 and the nano particle, and electrically connect with second metal level 6, and grid metal level 8 extends to data electrode 3 tops and with data electrode 3 overlapping region arranged.Then, remove nano particle and carry out etching in above-mentioned overlapping region and can produce hole at first insulation course 10,7 of transmitters are arranged among the hole.Suitably must select etching region, promptly be suitable transmitter setting area 4 to be set.Reach whereby described in the reason such as above-mentioned embodiment of improving the Field Emission Display brightness irregularities, repeat no more here.

Fig. 5, Fig. 6 A-6C explain the second embodiment of the present invention.Fig. 5 is depicted as vertical view.Fig. 6 A, 6B, 6C then illustrate the sectional view of A-A ' among Fig. 5, B-B ', C-C ' respectively.As shown in Figure 5; Grid 12 comprises many vertically gate lines 122 of configuration; Each gate line 122 that vertically disposes comprises a plurality of grid protuberances 121 that extend to the substrate right side; Data electrode 13 comprises many vertically data lines 132 of configuration, and data line 132 of each vertical configuration comprises a plurality of data electrode protuberances 131 that extend to the substrate left side, and each transmitter setting area 14 is positioned at the overlapping region of grid protuberance 121 with the data electrode protuberance 131 of each group subtend extension.Drive element of the grid 15 outputting drive voltage Vg, in order to driving grid 12, and drive element of the grid 15 is placed in first side (left side) of substrate 11.Wherein, transmitter setting area 14 is positioned at the grid protuberance 121 and the overlapping region of data electrode 13 to the data electrode protuberance 131 of first side (left side) extension of substrate that grid 12 extends to second side (right side) of substrate.And for example shown in Fig. 6 A-6C sectional view; Transmitter setting area 14 is positioned at data electrode 13 tops; And comprise first setting area 141 and 142, the first setting areas 141, second setting area and be positioned at the side near drive element of the grid 15, and second setting area 142 is positioned at the opposite side away from drive element of the grid 15; And the area of first setting area 141 is less than the area of second setting area 142, and first setting area 141 and this second setting area 142 are L of Central Line with data electrode protuberance 131 are the boundary.Even the area of first setting area 141 can be zero, that is transmitter 17 can only be arranged at second setting area 142 of transmitter setting area 14.This embodiment still can reach the shortcoming of improving the Field Emission Display brightness irregularities, and reason no longer repeats with described in first embodiment here.

Though the present invention with preferred embodiment openly as above; Right its is not in order to limit the present invention; Any those skilled in the art; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the scope that claim defined.

Claims (8)

1. Field Emission Display comprises:
One substrate;
One data electrode is formed on this substrate;
One grid is formed on this data electrode, and forms at least one overlay region with this data electrode;
A plurality of transmitters be arranged in the transmitter setting area of this data electrode top, and this transmitter setting area are arranged in this overlay region; And
One drive element of the grid is placed in first side of this substrate, and exports a grid voltage to drive this grid, wherein,
This transmitter setting area comprises:
One first setting area is positioned at than the side near this drive element of the grid; And
One second setting area; Be positioned at than opposite side away from this drive element of the grid; And the area of this first setting area is less than the area of this second setting area, and wherein, this first setting area and this second setting area are that the Central Line with this data electrode in this overlay region is the boundary.
2. Field Emission Display as claimed in claim 1, wherein this data electrode comprises many vertically data lines of configuration, and this grid comprises many vertically gate lines of configuration.
3. Field Emission Display as claimed in claim 2, wherein this grid voltage is second side that is sent to this substrate by first side of this substrate.
4. Field Emission Display as claimed in claim 3, wherein this data electrode has at least one teat that extends toward second side direction of this substrate, and the transmitter setting area is positioned at this teat top.
5. Field Emission Display as claimed in claim 3, wherein this data electrode has at least one teat that extends toward first side direction of this substrate, and the transmitter setting area is positioned on this teat.
6. Field Emission Display as claimed in claim 4, wherein this grid has at least one teat that extends toward first side direction of this substrate, with this this overlay region of teat formation of this data electrode.
7. Field Emission Display as claimed in claim 5, wherein this grid has at least one teat that extends toward second side direction of this substrate, with this this overlay region of teat formation of this data electrode.
8. Field Emission Display as claimed in claim 1, wherein the area of this first setting area is zero.
CN201210067516.9A 2011-12-02 2012-03-13 Field emission display CN102543037B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW100144483 2011-12-02
TW100144483A TWI442439B (en) 2011-12-02 2011-12-02 Field emission display

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CN102543037A true CN102543037A (en) 2012-07-04
CN102543037B CN102543037B (en) 2014-05-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018196048A1 (en) * 2017-04-27 2018-11-01 武汉华星光电技术有限公司 Array substrate and display device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI460700B (en) * 2012-05-07 2014-11-11 Novatek Microelectronics Corp Display driving apparatus and method for driving display panel

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JP2006059548A (en) * 2004-08-17 2006-03-02 Hitachi Ltd Display substrate
CN1841636A (en) * 2005-03-31 2006-10-04 三星Sdi株式会社 Electron emission device and electron emission display device
EP1858048A1 (en) * 2006-05-19 2007-11-21 Samsung SDI Co., Ltd. Light emission device, method of manufacturing the light emission device, and display device having the light emission device
US20080093975A1 (en) * 2006-10-23 2008-04-24 Kyung-Sun Ryu Light emission device and display device
JP2009164129A (en) * 2008-01-09 2009-07-23 Samsung Sdi Co Ltd Light-emitting device and display device using the same as light source

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006059548A (en) * 2004-08-17 2006-03-02 Hitachi Ltd Display substrate
CN1841636A (en) * 2005-03-31 2006-10-04 三星Sdi株式会社 Electron emission device and electron emission display device
EP1858048A1 (en) * 2006-05-19 2007-11-21 Samsung SDI Co., Ltd. Light emission device, method of manufacturing the light emission device, and display device having the light emission device
US20080093975A1 (en) * 2006-10-23 2008-04-24 Kyung-Sun Ryu Light emission device and display device
JP2009164129A (en) * 2008-01-09 2009-07-23 Samsung Sdi Co Ltd Light-emitting device and display device using the same as light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018196048A1 (en) * 2017-04-27 2018-11-01 武汉华星光电技术有限公司 Array substrate and display device

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TW201324570A (en) 2013-06-16
TWI442439B (en) 2014-06-21
CN102543037B (en) 2014-05-07

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