TWI249759B - Serpentine lamp for LCD backlight - Google Patents

Abstract

A serpentine lamp including an electrode section installed at the side of a plate, a channel section installed on the plate to be folded several times, having an inner circumference coated with a fluorescent material, and filled with a discharge gas, and an insulator having an air space between the electrode section and the folded ends of the channel section adjacent to the electrode section. The electrode sections and the channel sections are insulated by the insulators so that interference due to the voltage phase difference is minimized. Heat transfer from the electrodes is restrained so as to prevent blackening. Heat is prevented so that the life time of the serpentine lame is extended. Stability and uniformity of light emission are secured, and high brightness can be maintained.

Description

1249759 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a xenon lamp; more particularly, the present invention relates to an improved xenon lamp for use in backlights, which is capable of limiting the electrode The dimming caused by the voltage difference with the channel portion prevents the lamp from being damaged and provides a uniform light source of high brightness. [Prior Art] In general, although a cathode ray tube (CRT) is used as a display for a television set, a meter, a tribute terminal, and the like, it is an electronic product that satisfies a small size and a light weight. For the purpose of demand, liquid crystal displays (LCDs) are replacing CRTs. Since the LCD is used to inject the liquid crystal of the liquid crystal in a panel and cannot emit light by itself (unlike the plasma display panel), an emission display or the like (which has a backlight) is required. A separate light source for uniformly illuminating an image display surface to view an image displayed on the LCD panel. An example of a conventional xenon lamp 1 图 shown in Figures 1 and 2 is shown. As shown in the figures, the conventional lamp 1 〇 includes a plurality of electrodes 2 〇 and a channel portion 30 at the upper surface of the plate, and the electrodes 20 and the channel portion 3 0 will be folded several times to communicate with each other. The electrodes 20 and the channel portion 30 can be connected to each other by a simple molten glass powder. When power is supplied to the electrodes 20, the discharge gas filled in the channel portion 30 releases electric power to excite the glory material coated on the inner wall of the channel portion 30. Glowing. Therefore, 1249759 This xenon lamp can be used as a backlight. However, because the conventional xenon lamp 10 has a long discharge path, an extremely high voltage is required to operate the xenon lamp. The high voltage causes interference between the electrodes 20 and the channel portion 30, so that the electrodes 2 are formed into a plurality of fine openings. Therefore, the discharge path is generated at the seal, thereby reducing the light of the xenon lamp and generating heat to cause damage. In other words, since the electrodes 20 and the channel portion 3 are connected by a molten glass frit bundle in a short gap without a buffer (insulation), the supply voltage to the electrodes 20 is supplied. The interference with the discharge voltage from the channel portion 3 会 causes darkening. Therefore, the lamp is degraded to δ and the life of the xenon lamp is greatly shortened. SUMMARY OF THE INVENTION The present invention has been made in view of the above and/or other problems, and it is an object of the present invention to provide a xenon lamp which is mainly used as a backlight, between a plurality of electrodes and a channel portion. Contains a buffer zone as an insulator, the air space), and can limit the interference caused by the difference between the supply voltage and the %% pressure, so that darkening caused by the difference in the soil can be avoided. The phenomenon can also prevent the xenon lamp from being damaged. According to the present invention, the above and other objects are achieved by providing a xenon lamp having a lower portion comprising: an electrode portion which is attached to a side of a flat plate; a channel a portion mounted on the flat plate for folding several times, having an inner periphery coated with a fluorescent material, 1249759 and filled with a discharge gas; and an insulator at the electrode portion and adjacent to the electrode portion Between the folded ends of the channel portion there is - air = preferably, the insulator has an open end for free air to enter and exit the open end. The second invention also provides a xenon lamp including the following part: _ 甘 / 卞 卞, "" is made of a glass substrate; a plurality of semi-circular electrode parts, 唁 and other poles will be attached To the sides of the plate, the plates are made of the same material and comprise a plurality of electrodes; a complex 2 shaped channel portion that is utilized by being folded several times and In the case of the material, the channel portions are attached to the side 2 of the flat plate: the other channel portions communicate with the electrode portions, respectively; the grooves are: widely coated with the inner circumference of the light-emitting material And filled with the discharge gas, and will be made of a plurality of insulators, materials, and in the "..." by the same as the swash plate, the p... and the (four) folds adjacent to the electrode portions. There is an air space between the ends. [Embodiment] Hereinafter, a xenon lamp according to a preferred embodiment of the present invention will be described with reference to the drawings. n 平乂1土贝% 止® _, Figure 4 is a section of the injury, VL facet; Figure 5 shows the side profile of the ^^Z line β-β; the line CC of W 6 A side cross-sectional view of the obtained embodiment, 'the other of the month's deletion - the mouth! The plane of the I plane is the same as that of Fig. 4; the plane section of the xenon lamp of the same type as that of Fig. 5 is shown in Fig. 1249759 and Fig. 7. As shown in FIGS. 3 and 5, the xenon lamp 100 according to the preferred embodiment of the present invention comprises: a flat plate 200; an electrode portion 110 located at the flat plate 2〇〇 and supplied with a voltage; a second portion, which is located at the second plate of the plate so as to be connected to the electrode portion 11 and filled with a discharge gas; and an insulator 130 which is placed on the electrode portion 11 and the channel portion Between 1 2 0.

Preferably, the plate 200 has a quadrangular shape and is made of glass. As shown in FIG. 3, the electrode portion 11 is located at an upper portion of the upper surface of the flat plate 2, which is made of molten glass powder and further has a hollow shape having a semicircular portion, and The installation is performed in parallel with the upper side of the flat plate 2〇〇. In particular, a plurality of sections of the electrode portion 110 are formed; a plurality of electrodes are coupled to the device core 112b such that positive and negative electrodes ... and 11 4b can be inserted therein.

Furthermore, the positive and negative electrodes 114 & and 114b are opened by a certain portion of the electrode portion (that is, the central portion of the upper side of the plate 200 t μ a 1 and b), and the electrode The ends of the portion 110 are all sealed. And == the electrode connecting devices U2a and (10) are opened ^: the remaining portion of the electrode portion 11 is sealed. The electrodes of the power source are supplied to the electrode portion 11. Among them. The groove portion 120 is horizontally inserted into the direction and folded several times and placed at the upper surface of the flat plate 2 Ο 0 in the longitudinal direction by 9 1249759, the cross-sectional shape of which is the same as that of the electrode portion 1 'And these ends will communicate with the electrode section respectively. The same as the electrode portion 11A, the channel portion 〇2〇 is attached to the upper surface of the flat plate 200 and is made of molten glass powder and has a semicircular portion. The channel portion 12 has an inner periphery coated with a phosphor material. The channel portion 1 20 is filled with a discharge gas and is spaced apart from the electrode portion 11 上 on the plate 2 〇 . As shown in Fig. 3, the electrode connecting devices 丨丨2a #4 11 2b are mounted, and the electrode portion 110 is placed along the upper side of the flat plate 2〇〇. The folded ends of the channel portion 120 are spaced apart from each other such that a space is formed between the folded ends and the electrode portion. "Hai, and the body of the body 1 3 Q is placed in a space between the electrode portion 11 〇 and the fold and the end, and is due to the electrode portion 110 and the fingers The end of the abundance is formed by inserting an approximately elbow-shaped tube. The 3 insulator 130 is made of the molten glass and further has an approximately semicircular portion, and the inner hollow is used as the air passage 132. Further, the radius of the insulating body 130 is preferably smaller than the radius of the electrode portion i J 〇 and the radius of the channel portion 120. * The insulator 130 is formed in the longitudinal direction at the intermediate portion to form a second gas release/bow intrusion 134. The air release/introduction enthalpy communicates with the air path 1 32 to allow external air to freely enter and exit the insulator 1 130. 10 1249759 Therefore, the electrode portion Π0 and the channel portion 120 are insulated by the insulator, and the insulating system acts as a buffer space to limit the interference between the phase differences of the voltages. Meanwhile, as shown in FIGS. 6 and 7, a xenon lamp according to another embodiment of the present invention may be fabricated by joining two halves of the same shape, the two halves each comprising: a semi-circular electrode portion 11〇 and 11〇, both of which are located at the sides of the plate 200; the channel portions 12〇 and 12〇, which are respectively connected to the electrode portions 11〇 and 11〇, and have The same shape as the channel portion 120 in the above embodiment; and the insulators 13〇 and ι3〇, both of which are placed between the electrode portions and 11〇, and between the channel portions 120 and 120, . According to the present invention, the aphid extension electrode portion 110:110 of the preferred embodiment is manufactured by symmetrically joining two halves having a semicircular portion formed in the longitudinal direction or the direction of visibility. A passage for forming a circular cross section, and mounting a plurality of electrodes; the sealed circular portions 120 and 12A, 'both of which will be the sum of the electrode portions u. And 11 〇, 雷二η combination and communication 'both have an inner peripheral sub-filled discharge gas coated with a f-light material; and insulators 130 and 13〇, the electrode portions no and 110, and adjacent There is an air space between the electrode portion ιι 〇 and the folded end of the = 5 lap channel portion 12G (four). And the connection relationship of the structure of the components of the xenon lamp of the other embodiment and the removal of the plate according to the face, which will remove the plate by 20° and will engage the xenon lamp in a face-to-face manner The same two halves. 1249759 The operation of the xenon lamp in accordance with this embodiment of the present invention will now be described. When the electrodes 11 4a and 114b inserted into the electrode portions 11 〇 and 1 丨 0 are supplied with a voltage, the discharge gas in the channel portions 12 〇 and 120 is filled. Generate electricity discharge. By the relationship between the ό 荥 荥 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Further, ultraviolet rays are generated. The generated ultraviolet light excites the phosphor material coated on the periphery of the channel portions 〇2 and 120' to emit light to serve as a xenon lamp.

At this time, since the electrode portions 110 and 110, and the channel portions 12 and 120, are insulated by the insulators 13 and 13 (the outside air will enter and exit the insulator 130, 130) Therefore, it is possible to greatly reduce the disturbance caused by the phase difference between the supply voltage supplied to the electrode portions 110 and 11 and the discharge voltages from the channel portions 12 and 120. In addition, since the insulators i 3 〇 and 丨 3 可 can be utilized to prevent the heat of the electrodes generated by transmitting the voltage phase difference, the darkening of the channel portions 120 and 120 can be greatly restricted. phenomenon. According to the xenon lamp of the present invention, since the above phenomenon can be avoided, the purpose of achieving % 疋 and uniform illuminance and high brightness can be maximized to maximize the effect of a backlight. Further, in accordance with the present invention, in various occasions, more specifically, the lamp can be used in the light of the back 12 1249759 which can be used for the liquid crystal display. The xenon lamp according to the present invention as described above has the following advantages. The first advantage is that the electrode portions and the channel portions are insulated by the gate bodies, so that the second advantage due to the voltage phase difference can be minimized, and the darkening can be avoided. The life of the item. The heat transfer from the electrodes is limited and the heat is limited, so the fourth advantage of the xenon lamp can be extended to maintain the extreme south party. It ensures the stability and uniformity of luminescence and can be used for τ π N w kisses. However, those with ordinary knowledge in this technology will find that they can also be modified, added, and replaced. Without departing from the scope and spirit of the invention as disclosed in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS These and/or other objects and advantages will be apparent from the following description in conjunction with the accompanying drawings.

The front view of the xenon lamp used for _ φ f f is shown in the front view of the figure; the τ is taken along the line A - A in Fig. 1 13 1249759 in accordance with a preferred embodiment of the xenon lamp of the present invention; a plan view; a side view taken along the line B_ in FIG. 3 is not shown in FIG. Straight line c | side view of the service side, another side view of the xenon lamp of the present invention: the way of obtaining the profile is the same as that of FIG. 4; and, FIG. 7 is the same as FIG. The 蜿 [main component symbol description]. 】 face 3 1 〇 bowl xenon lamp 20 electrode

30 40 100 110110, 112a 112b 114a Channel section Plate bowl lamp Electrode part Electrode part Electrode connection device Electrode connection device Electrode

H4b electrode 12 0 channel section 12 0' channel section 13〇 insulator insulator 132 air path 14 1249759 134 air release/introduction 埠 200 plate

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Claims (1)

1249759 X. Patent Application Range·· 1 · A xenon lamp comprising: an electrode portion mounted on a side of a flat plate; and a ramp portion mounted on the flat plate For folding several times, there is an inner circumference of the fluorescent material, and is filled with a discharge gas, an insulator having _ between the folded ends of the electrode portion and an air space adjacent to the electrode portion. The xenon lamp of the first paragraph of the patent application scope is open, and the external air can pass through the open end 3. The xenon lamp comprises: 2 electrodes, which are borrowed A plurality of electrodes are mounted by the surfaces of the two halves of the semicircular portion in the directional joint or in the width direction and are mounted with a plurality of electrodes; wherein the insulator is free to enter and exit in spring. There are circular channel portions formed in the longitudinal direction to form a circular section 2 (4), which are mutually joined and communicated by the electric means. They have - coated the inner periphery of the camping material and are filled with the discharge gas; And a plurality of insulators, which have an air space between the 5 荨 electrode portion and the folded ends of the channel portion adjacent to the portion. XI. Schema: as the next page 16