TWI242385B - Structure and manufacturing method of shadow mask for quadr-pole field emission displays - Google Patents

Abstract

Disclosed is a structure and manufacturing method of shadow mask for quadr-pole field emission display, which is applied onto a three-layered shadow mask consisting of a convergent electrode layer, an insulated layer and a gate electrode. The structure has a first metal conductive plate for use as a convergent electrode layer on which one side is attached with a glass plate having through holes above and under the plates for enabling electron beam to pass through. The glass plate is formed as an insulated layer on which a second conductive plate is installed outside, and the second conductive plate is used as a gate electrode. Thereby the laminated three-layered structure is able to replace the conventional insulated layer formed by printing and thus achieve a better economic effect.

Description

1242385

V. Description of the invention (1) [Abstract of the invention] The present invention relates to a method for manufacturing a sieve. ；； = Indicator net cover structure and three-layer net of the pole layer [It is based on a kind of insulation layer and gate-the side of the conductive plate is adhered ~ ^ as a converging electrode layer 'through holes, through the edge of the glass plate The blade is provided with an electron beam bundle as a gate layer to achieve better economic benefits. The insulating layer formed by the p-type is described in [Technical Field of the Invention] The present invention relates to a field emission display with a four-pole structure, and particularly to a method of manufacturing a convergent electrode layer, an insulating layer, and a convergent electrode layer. "Early < ,,,. Structure and [Previous Technology] Press, Field Emission Display (fEd) B One of the emerging flat displays in recent years. The reason is that it has the effect of self-reflection, without the need to use a backlight source. Compared to LCD, except In addition to better brightness performance, coupled with a wider viewing angle range, low power consumption, fast response speed (no residual image), and wide operating temperature, etc., and the image quality it presents is very high It is similar to a traditional cathode ray tube (CRT) display, but its volume is much lighter and thinner than a cathode ray tube. Therefore, the field emission display _ becomes the star of tomorrow to replace the liquid crystal display and plasma display ^

1242385 V. Description of Invention (2) Things to be done. In addition, due to the rapid development of nanotechnology in recent years, the application of nanomaterials in field emission displays will further promote its development into mature products. The first picture shows a basic three-pole field emission display. The cross-sectional view 'its structure mainly includes an anode plate (丨 〇) and a cathode plate (20), and a spacer (14) is provided between the anode plate (10) and the cathode plate (20), and is provided as an anode plate (10) The space between the vacuum area and the cathode plate (20), and as a support between the anode plate (10) and the cathode plate (20), the anode plate (10) includes an anode substrate (1 1) An anode conductive layer (12) and a phosphor powder layer (13); and the cathode plate (20) includes a cathode substrate (21), a cathode conductive layer (22), an electron The source layer (23), a dielectric layer (24), and a gate layer (25); wherein the gate layer (25) is provided with a potential difference to draw electrons out of the electron emission source layer (23). High voltage provided by the anode conductive layer (12) to provide acceleration of the electron beam, so that the electrons have sufficient kinetic energy to collide Phosphor layer (13) on the (impinge) of the anode plate (1〇) excited to emit light. β, but the emission of the electron beam will form a fan-shaped divergence, and this three-pole structure of the 昜 Ιχ emission, 4 indicators, it is difficult to control the divergence amplitude of its electron beam, causing the electron beam to diverge excessively, and may even hit the neighboring = As a result, the development effect is reduced, so it is as shown in the second figure. Four talents ^: The structure was introduced. This type of quadrupole structure was also proposed by the applicant. It is a fourth electrode (convergent electrode) in addition to the previous pole structure, which is mainly a / f cathode plate (40) and an anode plate. (30) correspondingly, a mesh cover (5) is fixedly arranged, which comprises: a convergent electrode layer (51), an insulating layer (52), and a gate layer (53).

Page 7 1242385 V. Description of the invention (3) layer structure, and its convergent electrode layer (51) faces the anode plate (30), and a plurality of strip-shaped supports (34) are provided in between, the anode plate ( 30) is an anode unit composed of an anode substrate (31), an anode conductive layer (32) and a fluorescent powder layer (33), and the gate layer (53) faces the cathode plate (40), A barrier wall (44) is also arranged in between. The cathode plate (40) is a cathode unit composed of a cathode substrate (41), a cathode conductive layer (42), and an electron emission source layer (4 3). The gate layer ( 5 3) and the convergent electrode layer (51) each carry an appropriate potential. In addition, the mesh cover (5) is provided with a plurality of through holes (54) corresponding to each of the cathode and anode units, so as to allow the electron beams emitted from the electron source emission layer (43) to the fluorescent powder layer (33) to pass through. The net cover (5) is shown in the third figure, and a metal conductive plate is used as a substrate, that is, a straight electrode is used as a convergent electrode layer (51), and an insulating layer (52) is arranged on the lower side / A conductive layer is arranged on the side below the edge layer (5 2), which forms a gate layer (53). It is a metal conductive plate (ie, a convergent electrode layer (51)) of the mesh cover (5). There are no multiple through holes (5 4) arranged in a matrix, and the positions of the through holes (5 4) are arranged corresponding to the female and female & polar units (ie, the electron emission source and fluorescent powder) for cathode electron emission. The source layer (43) generates an electron beam to pass through the channel of the mesh cover (5) when it is directed to the anode phosphor powder layer (33). The peripheral part of the metal conductive plate is an invalid area (5 5). A plurality of alignment marks (551) can be set at appropriate positions in the invalid area (5 5). The positive and negative electrodes correspond to the through holes (54) in the mesh cover (5). This four-pole structure can make the converging electrode layer (5 丨) converge the electron beam, that is, limit the fan-shaped divergence amplitude. The electron beam can accurately hit the corresponding fluorescent powder layer (33) without hitting the adjacent unit, which effectively improves the 1242385 V. Description of the invention (4) The imaging effect of the field emission display 'but its net cover (5) The insulating layer (5 2) and the gate layer (5 3) are both made by screen printing or yellow light process. The process is more complicated and the cost is higher. [Summary of the Invention] The main object of the present invention is to provide a screen structure of a quadrupole field emission display and a manufacturing method thereof, which replace the existing screen printing or yellow light with a simpler screen structure and manufacturing method. Manufacturing process can effectively simplify the manufacturing process and reduce costs. In order to achieve the above object, the present invention forms a convergent electrode layer with a metal conductive plate, and then forms an insulating layer with a glass plate, and then sets a second conductive plate on the glass plate to form a gate layer to synthesize one or three layers. Mesh cover of solid structure. [Embodiment] First, please refer to the fourth figure, which is a three-dimensional exploded view of the net cover (6) of the present invention. It can be seen that it is composed of a first conductive plate (61), a glass plate (62) and a The three-layer structure composed of the second conductive plate (63), wherein the first and second conductive plates (6 1 '6 3) are made of the same metal material, and are used as the convergence electrode layer and the gate layer, respectively. The first conductive plate (6 1) is provided with a plurality of first through holes (6 丨 丨) arranged in a matrix at a position corresponding to each group of cathodes and anodes, and an invalid area (612) around it (outside the dotted line) There are ^ alignment marks (61 3) at appropriate positions of the area) for packaging and assembly, and after the packaging and assembly is completed, the 'invalid area (6 丨 2) will be cut off. The glass plate (6 2) is used as an insulation layer to avoid the conduction between the two conductive plates (61, 63). A second through hole is also provided at a position corresponding to the first through hole (6 11). (6 2 1),

1242385 V. Description of the invention (5), the second through hole (621) can be selected to be opened one-to-one corresponding to the first through hole (611), and can also be opened corresponding to a plurality of first through holes (6 丨 丨). Each second through-hole U2 1) can cover the area occupied by the plurality of first through-holes (6 丨 丨), as shown in Figure $, which corresponds to a whole row of first through-holes (6 丨 丨) An elongated second through hole (621) is formed, and the glass plate (62) is also provided with an invalid area (6 2 2) and a registration mark (6 2) corresponding to the first conductive plate (6 1). 3). The second conductive plate (63) is used as a gate layer, and a third through hole (631) is also provided at a position corresponding to the first through hole (6i 1). The third through hole (621) ) Can be selected to correspond to the first through hole (6 1 1)-one to one, or another type of the second conductive plate (64,) shown in the sixth figure, corresponding to a whole row of first through holes (61j), and another long isolation hole (632) is opened between every two rows of third through holes (631, 631,), and both ends of the isolation hole (632) extend into the invalid area (633 ), When the invalid area (633) is cut off, an elongated conductive strip is formed on each side of each row of the second through holes (631), and the two pairs of conductive strips form a plurality of independent sets. The conductive path can be controlled to switch its potential. When any group of conductive bars has a potential, it will form the gate of the electron that does not attract the cathode unit between the conductive bars of the group. A registration mark (634) is also provided in the invalid area (63 3) around the second conductive plate (63). These three will form an independent mesh cover (6) after the alignment packaging is completed. The one shown in the fifth figure is a sectional view. The first, second and third through holes (6 1 1, 6 2 1 , 6 3 1) in a corresponding arrangement, forming the way of electron beam crossing.乂 The seventh figure shows another embodiment of the second conductive plate (63 ,,), which is arranged in a hollow frame (6 36), and a plurality of parallel wires (6 3 5) are arranged.

Page 10 1242385 V. Description of the invention (6) The line (6 3 5) is provided in the pore areas on both sides of each row of the first through holes (6 11), and after the ineffective area outside the dotted line is cut away, the frame The body (6 3 6) is separated from the wire (6 3 5) to form two wires (6 3 5) of each group sandwiching a row of first through holes (6 1 1) (also called a row of cathode units), That is, as shown in the eighth figure, each pair of wires (6 3 5) is used as the gate. As for the manufacturing method of the present invention, a conductive plate (6 1, 6 3) and a glass plate (6 2) which have an expansion coefficient similar to that of the cathode and anode plates are selected so as to avoid 'expansion due to expansion during the high temperature sintering process. This caused a rupture. First apply UV glue and glass-breaking glue to the invalid area (61 2, 6, 22, 632) of the contact surface of each layer. Continue to align each layer according to the registration mark (61 3, 623, 63 3). After the "Feifeng" alignment and stacking are completed, the UV glue is irradiated with ultraviolet rays to make the M glue temporarily adhere to the false fixation. Finally, the false fixation is held by the high temperature clamp 1 ^ mesh cover (6), and sent to the high temperature furnace for Sintering makes the UV glue gas out and out due to the high temperature, and makes the glass glue have a real fixing effect. So the invention of the net cover (6) $ 制 从 ^ ^% 风 本 黄光 势 Γ H No need to use the conventional screen version Printing or benefit. And private, can be greatly simplified in terms of the I process, and has more economic benefits of mass production. However, the above is not clear ’is not intended to limit the scope of the spirit of this development. ’As it is the scope of the patent of the present invention, its effects should be changed by way of example. He used the sword of the invention.

Page 11 1242385 Brief description of the drawings The first picture The second picture The third picture The fourth picture The fifth picture The sixth picture The seventh picture . . Figure chart chart Figure chart chart. Stereo stereopsis Visual stereotypes The sections are explained in sections and parts are covered in sections. An illustration of Shi Shizhi's real image of the rear device The first gate, the gate, the net, the free structure, the structure, the cover, the knot, the net, the net, the pole, the place, and the place ## Character table in the textbook: For replacement parts [Xi .. • • Anode plate 11 .. • Anode substrate 12. .. Anode conductive layer 13 .. • Fluorescent powder layer 14 .. • Supporter 20. • Cathode plate 21 .. • Cathode substrate 22 .. • Cathode conductive layer 23 .. • Electron emission source layer 24 .. • Dielectric layer 25 .. • Gate layer 30 .. • Anode plate 31. .. • Anode substrate 32... Anode conductive layer 33 · · • Fluorescent powder layer 34 · · • Support 40. .. Cathode plate 41.. • Cathode substrate 42. • Cathode conductive layer 43. .. Electron emission source layer 44 · · • Barrier wall 5 · • • Mesh cover 51.. • Convergent electrode layer 52... Insulation Layer 53 ·· .Gate layer 54 ·· • through hole

Page 12

Claims (1)

1242385 6. Scope of patent application 1. A net cover structure of a four-pole structure field emission display, the net cover is provided between an anode plate and a cathode plate, and is provided with a convergent electrode layer, an insulating layer and a gate layer. : A first conductive plate, which is a metal plate body, is used as a convergent electrode layer, and a plurality of first transparent plates are provided at positions corresponding to each group of the anode and anode units; a glass plate is used as an insulation layer, A second through hole corresponding to the first through hole is provided thereon; a second conductive plate is a metal plate body as a gate layer, and a third through hole corresponding to the first through hole is provided thereon; A long isolation hole is formed between two third through holes; wherein the three through holes form a hole through which the electron beam passes through the net cover. 2. The net cover structure described in item 1 of the scope of patent application, wherein the second through holes are opened one-to-one corresponding to the first through holes. 3. The net cover structure according to item 1 of the scope of patent application, wherein the second through hole is opened corresponding to a plurality of adjacent first through holes. 4. The net cover structure according to item 1 of the scope of patent application, wherein the third through-holes are opened one-to-one corresponding to the first through-holes. 5. The net cover structure described in item 1 of the scope of patent application, wherein the third through-holes are opened corresponding to a plurality of adjacent first through-holes in the same row. 6. —A net cover structure of a field emission display with a quadrupole structure, the net cover is provided between the anode plate and the cathode plate, and the net cover is provided with a convergent electrode layer, an insulating layer and a gate layer, including: A first conductive plate is a metal plate body as a convergent electrode layer. Page 12 1242385 Corresponding to the female ^ a ^ group of anode and cathode single open f striker ΘΒ ^ y ^, at the position of Wife Xixuan early Wu, a plurality of first through holes are opened; a glass plate is used as an insulating layer, and is opened on it There is a second through hole corresponding to the aforementioned first through hole; = a second conductive plate as a gate layer, and a plurality of 'wires are arranged in a hollow frame; the wire is corresponding to the pores of the first through hole; Where the gap between the two through-holes and the wire forms an electron beam passing through the hole of the net cover. The net cover structure according to item 6 of the patent application scope, wherein the second through-hole is connected to the first through-hole. The holes are opened one-to-one. 8. The net cover structure according to item 6 of the scope of patent application, wherein the second through-holes are opened corresponding to a plurality of adjacent first through-holes. 9 · A method for manufacturing a net cover of a four-pole field emission display, the net cover is provided with a convergent electrode layer, an insulating layer and a gate layer, and includes: two metal conductive plates are selected as the convergent electrode layers and Gate layer; a glass plate is selected as an insulating layer; the glass plate is sandwiched between two conductive plates, and is fixed in position by adhesion. I 0 · The method for manufacturing a net cover according to item 9 of the scope of the patent application, wherein the ineffective areas around the two conductive plates and the glass plate are respectively provided with a plurality of alignment marks. II · The manufacturing method of the net cover as described in item 9 of the scope of the patent application, which is to apply u V glue and glass glue to the contact surface of the mother layer, and continue to stack the layers according to the registration number g. Then, uv V glue is irradiated with ultraviolet rays to make ν V glue have a false fixing effect. Finally, the net cover is sent to a high temperature furnace for sintering and fixing. Page 14 1242385 12 Inductive grid cover manufacturing method described in item 9 of the scope of patent application, the metal conductive plate and the broken glass plate are °, which is the material. ^ Manufactured with a net cover of 13. four-pole structure field emission display with an expansion coefficient similar to that of the cathode and anode plates. ^ A convergent electrode layer and a π / a / are provided. The net cover, nbaorens, # 纟 巴 缘Layer and a gate layer, including: far = a metal conductive plate as a convergent electrode layer; a glass plate is selected as an insulating layer; a gate layer is made and is arranged in a hollow frame The glass plate is sandwiched between the conductive plate and the gate layer by a plurality of wires, and the position is adhered and fixed. 1 4 · The method for manufacturing a net cover as described in Item 13 of the scope of the patent application, wherein the invalid areas around the conductive plate, the gate layer and the glass plate are provided with & number ^ registration marks, respectively. 15. The method for manufacturing a net cover as described in Item 13 of the scope of the patent application, which is to apply UV glue and glass glue to the mating surface of the mother laminate. Continue to stack the laminates according to the registration marks. Then, the UV glue is irradiated with ultraviolet rays to make the UV glue produce a false fixing effect. Finally, the net cover is sent to a high-temperature furnace for sintering and fixing. 16 · The method for manufacturing a net cover as described in item 13 of the scope of the patent application, wherein the metal conductive plate and the glass plate are made of a material having an expansion coefficient similar to that of the cathode and anode plates. ----