KR100840671B1 - Flat Luminescene Lamp - Google Patents

Abstract

The present invention relates to a surface light emitting lamp which can replace only the lamp when a failure occurs in the lamp assembled for each channel, in particular, a plurality of channel lamps, a reflector surrounding each channel lamp under the channel lamp, and the channel lamp And a drawing guider formed at both ends of the channel lamp and sealed at one side substrate of the unit, wherein the channel lamp includes a glass tube filled with discharge gas and sealing both ends of the glass tube. And a first wire and a second wire inserted through the seam, the first and second electrodes inserted into the seam, and the first and second wires respectively shouldered to the first and second electrodes. .

Surface Emitting, Channel Lamp

Description

Flat Luminescene Lamp

1 is an exploded perspective view of a backlight for explaining the light guide plate method according to the prior art.

2 is a plan view of a surface emitting lamp according to the prior art.

3 is a cross-sectional view taken along the line AA ′ of FIG. 2.

Figure 4 is a plan view of a surface emitting lamp according to the present invention.

FIG. 5 is a cross-sectional view taken along line B-B 'of FIG. 4; FIG.

Figure 6 is a perspective view of a lamp of a particular channel according to the present invention.

* Explanation of symbols on the main parts of the drawings

11: upper substrate 12: lower substrate

13 side board 14 discharge space

15: glass tube 17: suture

18a, 18b: 1st, 2nd electrode 19a: high voltage side wire

19b: low pressure side wire 20: connector

21: unit 24: withdrawal guide

25: reflector

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface light emitting lamp, and more particularly, to a surface light emitting lamp suitable for use as a backlight and a planar light source of a liquid crystal display by realizing uniform light distribution and high brightness.

Recently, research on flat panel display devices has been actively conducted, and among them, liquid crystal displays (LCD), field emission displays (FED), electro luminescence displays (ELD), and plasma display panels (PDP) Etc.

Among the liquid crystal display devices, unlike the other self-luminous flat panel display devices, the liquid crystal display devices are non-luminescent and thus cannot be used where there is no light.

In order to compensate for these disadvantages, an external illumination, a backlight for illuminating the display surface uniformly, is further attached to the lower portion of the liquid crystal panel.

The backlight introduced for this reason includes a light guide plate method that distributes light from the fluorescent lamp installed on the side of the liquid crystal panel using a transparent light guide plate to the entire liquid crystal panel screen, and light from the fluorescent lamp selectively mounted on the lower part of the liquid crystal panel. There is a direct type method in which the diffusion plate is disposed between the fluorescent lamp and the liquid crystal panel to be distributed over the entire liquid crystal panel screen.

When described in detail with reference to the accompanying drawings as follows.

1 is an exploded perspective view of a backlight for explaining the light guide plate method according to the prior art.

As shown in FIG. 1, the backlight according to the light guide plate method includes a main supporter 100 supporting each component of the backlight, a lamp 111 installed in one corner of the main supporter to emit light, and the main supporter. A cover 103 for protecting the lamp, a lamp housing 110 for accommodating the lamp, a light guide plate 105 for uniformly supplying the light emitted from the lamp to the LCD panel, and a lower surface of the light guide plate. A reflector plate 104 for reflecting light leaked from the light source, a lower diffuser plate 106 and an upper diffuser plate 109 provided on an upper surface of the light guide plate 105 to diffuse light incident from the light guide plate, and the diffusion plate. It consists of a lower prism sheet 107 and an upper prism sheet 108 which collects and diffuses light diffused between the plates to the LCD panel.

That is, the light guide plate type backlight requires the light guide plate 105, the diffusion plates 106 and 109, the prism sheets 107 and 108, and the like to uniformly irradiate the beneficiation emitted from the lamp 111 onto the display surface.

Here, lamp wires 113 are connected to both ends of the lamp 111 for electrical connection with an external power source, and these lamp wires 113 are drawn out to an external power source (not shown) through the connector 116. It is intended to be connected to the city.

In the case of a liquid crystal display device for a monitor or a TV for which high brightness is required, two or more lamps are mounted at the edge portion, and thus the number of wires and connectors increases.

However, the light guide plate method has a problem in that the sourcing and manufacturing process of various components are complicated, so that the price competitiveness is not only low, the defect rate is high, and the light must pass through the light guide plate, thereby lowering luminance.

In order to solve this problem, a direct type method of selectively mounting a fluorescent lamp under the liquid crystal panel has been proposed, but the distance between the lamp and the liquid crystal panel is kept constant so that the shape of the fluorescent lamp on the bottom is not displayed on the screen. Since light scattering means must be sufficiently disposed between the lamp and the liquid crystal panel in order to obtain a uniform light amount distribution, there is a limitation in thinning.

Therefore, in recent years, a flat panel type method using a surface emitting lamp that emits the entire surface facing the display surface of the liquid crystal panel has been proposed to provide high luminance and more uniform light quantity distribution.

When the display area is relatively large, a uniform light source is required. In view of the above, the flat panel type is most suitable.

2 and 3, the conventional surface light emitting lamp will be described in more detail as follows.

The conventional surface light emitting lamp includes an upper substrate 1 and a lower substrate 2 facing each other, and side substrates 3 formed at edges of the upper and lower substrates 1 and 2 to seal the components. The unit 11 and at least one channel lamp which is introduced into the unit 11 in units of channels and emits light toward the liquid crystal panel.

The channel lamp is a tubular glass tube (5), and both ends of the glass tube are sealed with a sealing portion (7) filled with a discharge gas such as neon (Ne), argon (Ar), mercury (Hg), etc. And a discharge layer 4 and a phosphor layer coated on a surface opposite to the discharge space 4. The both ends of the glass tube 5 penetrate through the sealing portion 7 to form the first electrode 8a and The second electrode 8b is formed, and the high-side wire 9a and the low-side wire 9b for applying power are shouldered to the first and second electrodes 8a and 8b exposed to the outside, respectively. (soldering).

At this time, the glass tube 5 may be straight or bent in a "c" or "d" shape, and at least one or more is housed inside the unit 11 to emit light toward the entire liquid crystal panel.

In addition, the high pressure side wire 9a and the low pressure side wire 9b connected to any one glass tube 5 are simultaneously connected to the connector 10 and connected to an external power source (not shown).

In the surface light emitting lamp configured as described above, when power is applied to the first and second electrodes 8a and 8b, electrons existing in the glass tube 5 are attracted to the electrodes and collide with the electrodes, thereby emitting secondary electrons. The discharge starts in the discharge space 4.

In addition, electrons flowing by the discharge are another electron in the glass tube 5, for example, collide with mercury (Hg) electrons to generate ultraviolet rays, and the ultraviolet rays collide with the phosphor layer applied to the inner wall of the glass tube 5 to excite it. To produce visible light.

However, the surface emitting lamp according to the prior art as described above has the following problems.

That is, the conventional surface emitting lamp is a structure in which a plurality of glass tubes in the unit of the unit are assembled in a bonding form with the upper and lower substrates of the unit interposed therebetween. There was a problem of not writing.

Due to this, the cost was excessively consumed by the replacement of the surface emitting lamp, and the productivity was reduced.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a surface emitting lamp that is easy to disassemble and assemble by assembling a plurality of channel lamps individually by a side slide method.

According to an aspect of the present invention, there is provided a surface light emitting lamp including a plurality of channel lamps, a reflection plate surrounding each channel lamp under the channel lamp, a unit accommodating the channel lamp and the reflection plate, and both ends of the channel lamp. And a lead guide formed on one side substrate of the unit, the channel lamp including a glass tube filled with discharge gas, a sealing portion for sealing both ends of the glass tube, and a first and second inserting portion inserted into the sealing portion. And a first wire and a second wire, which are shouldered to the first electrode and the second electrode, respectively, through the second electrode and the extraction guider.

That is, in the surface-emitting lamp assembled in units of channels, it is characterized in that to improve the productivity by allowing only the glass tube of the channel to be replaced when a particular channel is defective.

Hereinafter, a surface light emitting lamp according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a plan view of a surface light emitting lamp according to the present invention, FIG. 5 is a cross-sectional view showing a section taken along line B-B 'of FIG. 4, and FIG. 6 is a perspective view showing a lamp of a specific channel according to the present invention.

As shown in FIGS. 4 and 5, the surface light emitting lamp according to the present invention includes an upper substrate 11 and a lower substrate 12 and side substrates formed at and sealed at edges of the upper and lower substrates 11 and 12. 13 and a plurality of channel lamps for receiving various components, a plurality of channel lamps that are introduced into the unit 21 in units of channels to emit light toward the liquid crystal panel, and are mounted and leaked under the respective channel lamps. Reflector 25 reflects light toward the liquid crystal panel and assists withdrawal of each channel lamp, and is inserted into and sealed on any side substrate 13 of the unit 21 to draw out a specific channel lamp. It consists of a guider 24.

The upper substrate 11, the lower substrate 12, and the side substrate 13 of the unit 21 use a transparent glass substrate, and the upper substrate 11 is flat or curved to serve as a light emitting surface. Regardless, a material having reflective properties may be coated on the inner wall of the lower substrate 12.

At this time, the channel lamp is a glass tube 15, a sealing portion 17 for sealing both ends of the glass tube 15, and the discharge space 14 is filled with a discharge gas in the glass tube 15 discharge occurs And a fluorescent material (not shown) coated on the inner wall of the glass tube 15, first and second electrodes 18a and 18b inserted into the seal 17 at both ends of the glass tube 15, and the first and second electrodes 18a and 18b. First and second wires 19a and 19b that are respectively shouldered to the first and second electrodes 18a and 18b to apply voltage to the first and second electrodes, and the first and second wires 19a and 19b. The first and second electrodes 18a and 18b are formed by a connector 20 connected to an end of the c) and connected to an external driving circuit by a voltage applied through the first and second wires 19a and 19b. Discharge occurs between the cells, and at this time, the discharge gas emits UV while forming a plasma, and the visible light generated by the UV colliding with the phosphor layer is discharged to the liquid crystal panel side through the upper substrate 11. Ship.

Both ends of the glass tube 15 are inserted into the extraction guide 24, and the first and second wires 19a and 19b penetrate through the extraction guide 24 to form the first and second electrodes 18a and 18b. Is shouldered to.

As described above, the reflector 25 and the extraction guider 24 serves to assist the withdrawal of each channel lamp, and when a defect occurs in a specific channel lamp, the reflector 25 surrounding the channel lamp and the corresponding This can be replaced by the side slide method by the withdrawal guider 24 connected to the channel lamp (see Fig. 6).

The reflective plate 25 is made of a metal material having excellent reflection characteristics such as aluminum (Al) to smoothly draw out the channel lamp, and the extraction guide 24 is made of rubber such as PC (Poly Carbonate) having insulation properties. Materials are used to facilitate the withdrawal of the channel lamps and to prevent damage to the channel lamps that may occur during replacement.

After the light scattering means stacked in one or more light scattering medium layers are inserted into the surface light emitting lamp formed as described above, the liquid crystal panel is raised to uniformly emit light emitted from the surface light emitting lamp toward the liquid crystal panel side.

The surface emitting lamp of the present invention as described above has the following effects.

First, disassembling and assembling is easy by assembling a plurality of channel lamps individually by a side slide method.

Second, since replacement is possible for each channel, if a specific channel lamp is required to be replaced, only the corresponding channel lamp needs to be replaced.

Therefore, it is not necessary to dispose of the surface emitting lamp as in the past, and as a result, it is possible to reduce the cost by replacing the surface emitting lamp and at the same time improve the productivity.

Claims (9)

A plurality of channel lamps; A reflection plate surrounding each channel lamp under the channel lamp; A unit accommodating the channel lamp and the reflector; It is composed of a drawer guide formed on both ends of the channel lamp and sealed on any one side substrate of the unit, The channel lamp includes a glass tube filled with a discharge gas, a sealing portion for sealing both ends of the glass tube, first and second electrodes inserted into the sealing portion, and a first and second electrodes penetrating through the extraction guide. Surface-emitting lamp comprising a shouldered first, second wire. delete The surface light emitting lamp of claim 1, wherein both ends of the glass tube are inserted into a drawing guider. The surface light emitting lamp of claim 1, wherein the reflector is made of metal. The surface light emitting lamp of claim 1, wherein the reflector is made of aluminum. The surface light emitting lamp of claim 1, wherein the drawing guider is made of rubber. The surface light emitting lamp of claim 1, wherein the extraction guider is a polycarbonate (PC). The method of claim 1, wherein the unit, Opposing upper and lower substrates, Surface-emitting lamp, characterized in that consisting of the side substrate formed edge of the upper, lower substrate. The surface light emitting lamp of claim 1, wherein the channel lamp has a shape of any one of a straight, “c”, and “d” shape.

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