CN1310273C - Plasma luminous panel - Google Patents

Abstract

The present invention provides a plasma light emitting panel used as a light source of a display panel, which includes a first substrate having a first surface, a second substrate arranged above the first surface, a plurality of electrode pairs extending on the first surface along a first direction, and a plurality of conductive gap support bodies, wherein each of the electrode pairs includes a first electrode and a second electrode, and the conductive gap support bodies are respectively arranged on each of the first electrodes and each of the second electrodes for performing counter discharge and supporting the second substrate.

Description

Plasma light emitting panel

technical field

The invention relates to a plasma luminous panel (plasma panel), in particular to a plasma luminous panel capable of increasing gas discharge efficiency.

Background technique

Plasma panel (PP) is a planar light emitter that generates light through gas discharge. Its working principle is similar to that of fluorescent lamps and fluorescent lamps. Both use the ultraviolet light generated by inert gas discharge to irradiate phosphors. (phosphor), which produces visible light. On the other hand, since the plasma light-emitting panel is large and thin, and has the advantage of low radiation, it can be applied to the backlight of a large-sized liquid crystal display.

Please refer to FIG. 1 , which is a three-dimensional schematic diagram of a conventional plasma light-emitting panel. As shown in FIG. 1 , a plasma light-emitting panel 10 includes a front substrate 12, a rear substrate 14 parallel and opposite to the front substrate 12, and a discharge gas (discharge gas, not shown) is filled and sealed between the front substrate 12 and the front substrate 12. Between the rear substrate 14. On the other hand, the plasma light-emitting panel 10 also includes a plurality of electrode pairs 16 disposed on the surface of the rear substrate 14, a dielectric layer 22 is deposited on each electrode pair 16, and a phosphor layer 24 is disposed on the front substrate 12. The lower surface of the front substrate 12 and the rear substrate 14 , and a plurality of spacers 26 are disposed between the front substrate 12 and the rear substrate 14 . In addition, each electrode pair 16 includes an electrode 18 and an electrode 20, and each gap supporter 26 is disposed on the dielectric layer 22 between the electrode 18 and the electrode 20 to separate the front substrate 12 and the rear substrate 14, The distance between the front substrate 12 and the rear substrate 14 can be more than tens of micrometers (μm), so as to provide sufficient discharge space for the discharge gas. Generally, each gap supporter 26 is an insulating glass ball, and the discharge gas is an inert gas, usually neon (Ne), xenon (Xe), or a mixed gas of neon and xenon.

Next, the principle of light emission of the plasma light emitting panel 10 will be described as follows. First, a driving circuit (not shown) applies a discharge voltage to the electrode 18 and the electrode 20, and then the discharge voltage will cause a horizontal discharge (surface discharge) between the electrode 18 and the electrode 20, that is, the discharge The voltage causes gas molecules close to the electrodes 18, 20 to form plasma particles. Then, the plasma particles close to the electrodes 18 and 20 will continue to collide with other gas molecules to generate more plasma particles, and the excited atoms in the plasma particles will release ultraviolet light (ultra violet light), when the fluorescence After the body layer 24 absorbs the ultraviolet light released by the plasma particles, it can generate visible light to make the plasma light emitting panel 10 emit light. However, when the conventional plasma light-emitting panel 10 ignites the plasma, the plasma light-emitting panel 10 consumes a lot of electricity, so the discharge efficiency is low, thus reducing the use value of the plasma light-emitting panel 10 . Therefore, how to improve the discharge efficiency of the plasma light emitting panel 10 is one of the very important issues at present.

Contents of the invention

An object of the present invention is to provide a plasma light emitting panel which can increase gas discharge efficiency.

Another object of the present invention is to provide a plasma light-emitting panel that can reduce the plasma lighting voltage.

According to the purpose of the present invention, the preferred embodiment of the present invention provides a plasma light-emitting panel used as a light source for a display panel, which includes a first substrate with a first surface, a substrate disposed on the first surface The upper second substrate, a plurality of electrode pairs disposed on the first surface, and a plurality of conductive gap supports, wherein each electrode pair includes a first electrode and a second electrode, and the conductive The gap supporting body is respectively disposed on each of the first electrodes and each of the second electrodes, and is used for opposite discharge and supporting the second substrate.

Since the plasma light-emitting panel of the present invention utilizes each of the conductive gap supports to isolate the first substrate and the second substrate, when a horizontal discharge is generated between the first electrode and the second electrode, each of the conductive gaps Correspondingly opposing discharges will be generated between the supports, thereby improving the discharge efficiency of the plasma light-emitting panel.

In one embodiment, each of the conductive gap supports includes a sphere or a polyhedron.

In one embodiment, each of the conductive gap supports includes a cylinder or a prism.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of an existing plasma light-emitting panel;

2 is a schematic perspective view of a plasma light-emitting panel according to a first embodiment of the present invention;

Fig. 3 is a front view of the plasma light-emitting panel shown in Fig. 2;

Figure 4 is a top view of the rear substrate shown in Figure 2;

5 is a top view of the rear substrate of the plasma light-emitting panel according to the second embodiment of the present invention;

6 is a top view of the rear substrate of the plasma light-emitting panel according to the third embodiment of the present invention;

7 is a schematic perspective view of a rear substrate of a plasma light-emitting panel according to a fourth embodiment of the present invention;

8 is a schematic perspective view of a rear substrate of a plasma light emitting panel according to a fifth embodiment of the present invention.

Explanation of reference signs

10 Plasma light-emitting panel 12 Front substrate

14 rear substrate 16 electrode pair

18 Electrodes 20 Electrodes

22 Dielectric layer 24 Phosphor layer

26 Gap support body 30 Plasma light-emitting panel

32 Front base plate 34 Rear base plate

36 electrode pair 38 electrode

39 Protrusion 40 Electrode

41 Protruding part 42 Conductive gap support

44 Conductive gap support body 46 Dielectric layer

48 Phosphor layer 50 Conductive gap support

52 Conductive gap support body 54 Electrode pair

56 Electrode 56a Projection

58 Electrode 58a Projection

60 insulation layer

Detailed ways

Please refer to FIG. 2 to FIG. 4, FIG. 2 is a schematic perspective view of the plasma light-emitting panel of the first embodiment of the present invention, FIG. 3 is a front view of the plasma light-emitting panel shown in FIG. 2, and FIG. Top view of the rear substrate. As shown in FIG. 2 and FIG. 3 , a plasma light-emitting panel 30 includes a front substrate 32, a rear substrate 34 parallel and opposite to the front substrate 32, and a discharge gas (not shown) filled and sealed between the front substrate 32 and the front substrate 32. Between the rear substrate 34 . In addition, the plasma light-emitting panel 30 also includes a plurality of parallel electrode pairs 36 disposed on the surface of the rear substrate 34, and a plurality of conductive gap supports 42, 44 are electrically connected to the electrode pairs 36, and a An electrical layer 46 is deposited on each electrode pair 36 , and a phosphor layer 48 is formed on the lower surface of the front substrate 32 . In addition, the plasma light emitting panel 30 may further include a reflective layer (not shown) deposited on the dielectric layer 46, and a phosphor layer (not shown) formed on the reflective layer.

As shown in FIG. 4, each electrode pair 36 includes an electrode 38 and an electrode 40. The upper surface of the electrode 38 is provided with a plurality of conductive gap supports 42, and the upper surface of the electrode 40 is provided with a plurality of conductive gap supports. gap support body 44, and each conductive gap support body 42 is respectively relative to each conductive gap support body 44, in addition, two adjacent conductive gap support bodies 42 (or, two adjacent conductive gap support bodies 44 ) can be adjusted according to process constraints or required discharge efficiency. Wherein, each conductive gap support body 42, 44 includes a sphere, which is used to separate the front substrate 32 and the rear substrate 34, so that the distance between the front substrate 32 and the rear substrate 34 can be more than tens of microns (μm), so as to provide the Enough discharge space for the discharge gas. On the other hand, there are two connection modes between each conductive gap support body 42,44 and the electrodes 38,40. The first method is to dip each conductive gap support body 42,44 with a conductive adhesive layer (such as : conductive silver glue), and then use manual or machine to adhere each conductive gap support body 42,44 to the electrodes 38,40 respectively. The second way is to make a plurality of bases on the electrode 38 and the electrode 40 respectively, or form a plurality of openings in the dielectric layer 46 above the electrode 38 and the electrode 40, so that the electrode 38 and the electrode 40 can communicate with each other. The conductive gap supports 42, 44 are electrically connected, and then each conductive gap support body 42, 44 is placed on each of the openings in the base or the dielectric layer 46 manually or by machine, and finally after packaging , each conductive gap support body 42 , 44 can be electrically connected to the electrodes 38 , 40 . In this embodiment, each electrode 38 and 40 includes chromium/copper/chromium, chromium/aluminum/chromium, aluminum metal, or silver metal, and each conductive gap support body 42 and 44 is a conductive stainless steel ball. The discharge gas is neon (Ne), xenon (Xe), or a mixed gas of neon and xenon.

It is worth noting that since each conductive gap support body 42, 44 is directly electrically connected to the electrodes 38, 40, each conductive gap support body 42, 44 can be regarded as an extension of the electrodes 38, 40 to assist Electrode 38 and electrode 40 are discharged. In other words, when a driving circuit (not shown) applies a discharge voltage to the electrodes 38 and 40 to generate a horizontal discharge between the electrodes 38 and 40, the discharge voltage will be generated between the conductive gap supports 42 and the electrodes 40. A discharge of opposed electrodes is generated between the opposite conductive gap supports 44 to ignite the plasma between the conductive gap supports 42, 44, and generate ultraviolet light to irradiate the phosphor layer 48 to emit visible light .

In addition, the rear substrate of the plasma light-emitting panel shown in FIG. 4 is not the only structure of the present invention, and the structure of the rear substrate of other embodiments of the present invention will be described next. Please refer to FIG. 5 , which is a top view of the rear substrate of the plasma light emitting panel according to the second embodiment of the present invention. As shown in FIG. 5, a plurality of parallel electrode pairs 36 are arranged on the surface of the rear substrate 34, and each electrode pair 36 has an electrode 38 and an electrode 40, and the electrodes 38 and the electrodes 40 each include a plurality of protrusions. The part 39 and the protruding part 41, and each protruding part 39 is respectively opposite to each protruding part 41, and is used for igniting the plasma. In addition, the surface of the electrode 38 also includes a plurality of conductive gap supports 42, similarly, the surface of the electrode 40 also includes a plurality of conductive gap supports 44, and each conductive gap support 42, 44 Each includes a sphere for conducting opposite discharges and supporting a front substrate (not shown) parallel to and opposite to the rear substrate 34 . In addition, as shown in FIG. 5, each conductive gap support body 42, 44 is respectively arranged on the top of the protruding parts 39, 41, but the present invention is not limited thereto, and the positions of each conductive gap support body 42, 44 can be determined according to the process. limit or the desired discharge efficiency to adjust.

In this embodiment, when a driving circuit (not shown) applies a discharge voltage to the electrodes 38 and 40, the discharge voltage will first ignite the plasma between the protruding portion 39 and the protruding portion 41, and then pass through the two opposing All the plasmas are ignited by opposing discharges between the respective conductive gap supports 42 and 44. It should be noted that, since the discharge gap between the two opposite protrusions 39 and the protrusions 41 is relatively small, correspondingly, the ignition voltage used to ignite the plasma between the two opposite protrusions 39 and the protrusions 41 (firing voltage) will be lower, that is to say, the present embodiment can apply a lower discharge voltage to give the electrode 38 and the electrode 40, and the plasma between the protruding portion 39 and the protruding portion 41 can be ignited, that is to say , in the plasma light-emitting panel 30 of the present invention, in addition to the horizontal discharge between the protruding part 39 and the protruding part 41, the opposite discharge will be generated between the conductive gap support body 42 and the conductive gap support body 44 , thus increasing the discharge efficiency. It can be seen that this embodiment not only has the horizontal discharge and the opposite discharge at the same time, but also can reduce the ignition voltage of the plasma, thereby effectively improving the discharge efficiency.

Please refer to FIG. 6 , which is a top view of the rear substrate of the plasma light emitting panel according to the third embodiment of the present invention. As shown in FIG. 6, a plurality of parallel electrode pairs 36 are arranged on the rear substrate 34, and each electrode pair 36 includes an electrode 38 and an electrode 40, and the electrodes 38 and the electrodes 40 each include a plurality of protrusions 39 and The protruding part 41 is used to reduce the ignition voltage of the plasma. On the other hand, each protruding portion 39 and each protruding portion 41 are V-shaped, and each protruding portion 41 is arranged between two adjacent protruding portions 39, so that one protruding portion 41 is opposite to two protruding portions 39 at the same time. , while one protruding portion 39 is opposite to two protruding portions 41 at the same time. In addition, the surface of the electrode 38 also includes a plurality of conductive gap supports 42, similarly, the surface of the electrode 40 also includes a plurality of conductive gap supports 44, and each conductive gap support 42, 44 Each includes a sphere for conducting opposite discharges and supporting a front substrate (not shown) parallel to and opposite to the rear substrate 34 . In addition, as shown in FIG. 6, each conductive gap support body 42, 44 is respectively arranged on the top of the protruding parts 39, 41, but the present invention is not limited thereto, and the positions of each conductive gap support body 42, 44 can be determined according to the process. limit or the desired discharge efficiency to adjust.

Please refer to FIG. 7 . FIG. 7 is a perspective view of a rear substrate of a plasma light emitting panel according to a fourth embodiment of the present invention. As shown in FIG. 7 , a plurality of parallel electrode pairs 36 are disposed on the rear substrate 34 , and each electrode pair 36 includes an electrode 38 and an electrode 40 . Wherein, a plurality of conductive gap supports 50 are disposed on the surface of the electrode 38 , and a plurality of conductive gap supports 52 are disposed on the surface of the electrode 40 . In addition, each conductive gap support body 50, 52 is a cylinder, and each conductive gap support body 50, 52 is parallel to each other and staggered, and is used to carry out opposite discharge and support a parallel and opposite rear substrate 34. Front substrate (not shown).

Please refer to FIG. 8 . FIG. 8 is a perspective view of a rear substrate of a plasma light emitting panel according to a fifth embodiment of the present invention. As shown in Figure 8, an electrode pair 54 is provided on the rear substrate 34, and the thickness h of the electrode pair 54 is more than tens of microns (μm), which is used for opposite discharge and supporting a pair of electrodes parallel to the rear substrate 34 and The opposite front substrate (not shown). In addition, the electrode pair 54 includes an electrode 56 having a plurality of protruding portions 56a, and an electrode 58 having a plurality of protruding portions 58a, and each protruding portion 56a and each protruding portion 58a are parallel to each other and cross each other. In addition, the electrode pair 54 also includes a plurality of insulating layers 60 for connecting each protruding portion 56a and the electrode 58, and for connecting each protruding portion 58a and the electrode 56. However, the insulating layer 60 is not an essential element, and it can also be used. omitted. In this embodiment, both the electrode 56 and the electrode 58 include a module electrode, and the electrode 56 and the electrode 58 can be two same module electrodes or two different module electrodes. It should be noted that since the electrode pair 54 in this embodiment has the functions of facing the discharge and supporting the front substrate at the same time, the step of making the gap support can be omitted, so this embodiment can not only increase the discharge efficiency, but also save the process. step.

Compared with the prior art, the plasma light emitting panel of the present invention utilizes the conductive gap supporters 42 , 44 and 50 , 52 to isolate the front substrate 32 and the rear substrate 34 . Correspondingly opposing discharges are generated between the conductive gap supports 42 and 44 and between the conductive gap supports 50 and 52 , thereby increasing the discharge efficiency of the plasma light-emitting panel. Furthermore, the electrodes 38, 40 of the present invention also include a plurality of protruding portions 39, 41, and since the discharge gap between the two opposite protruding portions 39 and 41 is small, the ignition voltage of the plasma can be reduced. , to further improve the discharge efficiency. On the other hand, the electrode pair 54 of the present invention has the functions of facing the discharge and isolating the front substrate 32 and the rear substrate 34 , thereby saving process steps and improving discharge efficiency.

The above descriptions are only preferred embodiments of the present invention, and all equal changes and modifications made according to the claims of the present invention shall fall within the scope of the patent of the present invention.

Claims (10)

1. plasma light emitting panel, it is used as the light source of a display floater, and this plasma luminescent panel includes:

One first substrate, it has a first surface;

One second substrate is arranged at the top of this first surface;

A plurality of electrode pairs, it extends on this first surface along a first direction, and wherein respectively this electrode pair all includes one first electrode and one second electrode; And

A plurality of conductivity gap supporter is arranged at respectively respectively on this first electrode and this second electrode respectively, is used for carrying out the subtend discharge and supports this second substrate.

2. plasma light emitting panel as claimed in claim 1, wherein respectively this first electrode all includes an elongate body with this second electrode respectively.

3. plasma light emitting panel as claimed in claim 2, wherein respectively this first electrode also includes a plurality of first ledges.

4. plasma light emitting panel as claimed in claim 3, wherein respectively this second electrode also includes a plurality of and the second relative ledge of this first ledge respectively.

5. plasma light emitting panel as claimed in claim 4, wherein respectively this first ledge all is long strip type with this second ledge respectively.

6. plasma light emitting panel as claimed in claim 4, wherein respectively this first ledge all is V-shape with this second ledge respectively.

7. plasma light emitting panel as claimed in claim 1, wherein respectively this conductivity gap supporter all includes a spheroid or a polyhedron.

8. plasma light emitting panel as claimed in claim 1, wherein respectively this conductivity gap supporter all includes a cylinder or a prism.

9. plasma light emitting panel as claimed in claim 8, wherein respectively these conductivity gap supporters on this first electrode are parallel and staggered with these conductivity gap supporters on this second electrode respectively.

10. plasma light emitting panel as claimed in claim 1, wherein this display floater includes a display panels.

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