1344168 _- 100年02月22日修正替換頁 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種電子源及一種採用該電子源之面光源裝 置。 【先前技術】 [0002] 由於液晶顯示器具輕、薄、耗電小等優點，廣泛應用於 筆記本電腦、行動電話、個人數位助理等現代化資訊設 備。因液晶本身不具發光特性，需為其提供面光源裝置 以實現照明顯示功能。 [0003] 面光源裝置可根據光源之放置位置一般可分為侧光式 (Edge-Type)與直下式（Direct-Type)二種設計。一般 而言，對於中小尺寸液晶顯示器，側光式面光源裝置具 有輕量、薄型、·窄框化、低消費電力等優點。惟，隨著 科技日益發展，對大尺寸液晶顯示器的需求日趨高漲， 而大尺寸側光式面光源裝置在重量及消費電力等諸方面 之表現難如人意，且側光式面光源裝置之光利用率較低 ，其容納之光源數目亦極為有限，故無法達到大尺寸液 晶顯示器之輝度要求。因此，直下式面光源裝置得以發 展起來。直下式面光源裝置一般用於大尺寸液晶顯示面 板，該直下式面光源裝置必須使液晶顯示面板滿足輝度 高、均度高及寬廣視角等之要求。 [0004] 目前，直下式面光源裝置之光源一般採用冷陰極螢光燈 (CCFL)。惟，冷陰極螢光燈裏含有汞，汞係一種對環境 極其不利之物質，不符合環保要求。 【發明内容】 094131024 表單編號A0101 第4頁/共16頁 1003059843-0 100年02月22日俊正替換頁 1344168 [0005] 以下，將以實施例說明一種電子源，該電子源之電子出 射率高，壽命長以及一種採用該電子源之面光源裝置， 該面光源裝置輝度高且不含汞，符合環保要求。 [0006] 為實現上述内容，本實施例提供一種電子源，該電子源 包括：一對電磁線圈；位於該對電磁線圈間之複數燈絲 ，該對電磁線圈用於加熱複數燈絲使複數燈絲發射電子 :及兩相對傾斜設置之陰極，該兩陰極間形成一空腔， 該空腔具有一第一開口及與第一開口相對之一第二開口 ，該第二開口比第一開口大，該對電磁線圈及複數燈絲 位於第二開口處，該燈絲發射之電子從第一開口出射。 [0007] 所述第一開口之寬度為卜5毫米（mm)。 [0008] 所述兩陰極所在之兩平面形成一夾角。 [0009] 所述夾角之大小為40至120度。 [0010] 所述兩陰極朝向電子源外部之兩表面各具有一電介質層 〇 [0011] 所述電子源進一步包括一障柵極及一加速極，障柵極位 於第一開口與加速極之間。 [0012] 為實現上述内容，本實施例還提供一種面光源裝置，該 面光源裝置包括複數電子源、一陽極及位於複數電子源 與陽極間之惰性氣體。該陽極包括一陽極導電層及一形 成於陽極導電層上之螢光層，該螢光層與複數電子源相 對。每一電子源包括：一對電磁線圈；位於該對電磁線 圈間之複數燈絲，該對電磁線圈用於加熱複數燈絲使複 094131024 表單編號A0101 第5頁/共16頁 1003059843-0 1344168 _- 100年02月22日修正替換頁 數燈絲發射電子；及兩相對傾斜之陰極，該兩陰極間形 成一空腔，該空腔具有一第一開口及與第一開口相對之 一第二開口，該第二開口比第一開口大，該對電磁線圈 及複數燈絲位於第二開口處，該燈絲發射之電子從第一 開口出射。 [0013] 所述第一開口之寬度為卜5mm。 [0014] 所述兩陰極所在之兩平面形成一夾角。 [0015] 所述夾角之大小為40至120度。 [0016] 所述兩陰極朝向電子源外部之兩表面各具有一電介質層 〇 [0017] 所述電子源進一步包括一障柵極及一加速極，障栅極位 於第一開口與加速極之間。 [0018] 相較於先前技術，本發明實施例所提供之電子源，其兩 陰極之形狀呈八字形，可提高電子之出射率。兩陰極朝 向電子源外部之兩表面各具有一電介質層，可保護兩陰 極，避免兩陰極受到二次電子及離子之轟擊而降低使用 壽命。採用該電子源之面光源裝置，其惰性氣體電離率 高，實現面光源裝置之高輝度。面光源裝置内不含對環 境有害之物質汞，符合環保要求。 【實施方式】 [0019] 以下將結合附圖對本發明作進一步之詳細說明。 [0020] 請一併參閱第一圖及第二圖，本發明實施例提供之一種 電子源20，其包括一對電磁線圈201、複數燈絲202及兩 094131024 表單編號 A0101 第 6 頁/共 16 頁 1003059843-0 1344168 100年02月22日按正替換頁 陰極203、203’ 。 [0021] 複數燈絲202位於該對電磁線圈201之間，以便該對電磁 線圈201對複數燈絲202進行加熱使複數燈絲202發射電 子。兩陰極2 0 3、2 0 3 ’相對傾斜設置’該兩陰極2 0 3、 203’間形成一空腔200 ’該空腔200具有一第一開口 207 及一第二開口 2 0 8。第二開口 2 〇 8比第一開口 2 0 7大’該 對電磁線圈201及複數燈絲202位於第二開口 208處，複 數燈絲202發出之電子從第一開口 207出射。優選之，第 一開口 207之宽度X為卜5随。兩陰極203、203’所在之 兩平面形成一炎角，夾角之大小為40至120度。如此，兩 陰極203、203’之形狀呈八字形’可提高電子之出射率 [0022] 為了避免兩陰極203、203’受到二次電子及離子之轟擊 而降低使用壽命’兩陰極203、203’朝向電子源2〇外部 之兩表面各具有一電介質層204，該電介質層204起到保 護兩陰極203、203’之作用。電介質層2〇4之材料可選 自氧化銘（Α1 203)，氧化鎂（Mg〇)或二氧化石夕（Si〇2)。 [0023] 電子源20進一步包括一障栅極2〇5(Screen Grid)及一 加速極206(ACCelerat〇r Grid)，障柵極2〇5位於第一 開口 207與加速極206之間。加速極2〇6用於提高電場強 度，使電子加速獲得更大之動能，障柵極205使電子集中 避免散射。 請一併參閱第三圖及第四圖，本發明實施例提供之一種 面光源裝置2，其包括複數上述電子源2〇、一陰極基板21 094131024 表單編號A0101 第7頁/共16頁 1003059843-0 [0024] 13441681344168 _- DECEMBER 22, DECEMBER 22 MODIFICATION ALTERNATE PAGE 6. Description of the Invention: [Technical Field] [0001] The present invention relates to an electron source and a surface light source device using the same. [Prior Art] [0002] Due to its advantages of lightness, thinness, and low power consumption, liquid crystal display devices are widely used in modern information devices such as notebook computers, mobile phones, and personal digital assistants. Since the liquid crystal itself does not have a light-emitting property, it is required to provide a surface light source device to realize the illumination display function. [0003] The surface light source device can be generally classified into two types of edge-type and direct-type according to the position where the light source is placed. In general, for small and medium-sized liquid crystal displays, the edge-lit surface light source device has the advantages of light weight, thin shape, narrow frame, and low power consumption. However, with the development of technology, the demand for large-size liquid crystal displays is increasing, and the performance of large-size side-light surface light source devices in terms of weight and power consumption is unsatisfactory, and the light of the side-light surface light source device The utilization rate is low, and the number of light sources it accommodates is also extremely limited, so the brightness requirement of a large-sized liquid crystal display cannot be achieved. Therefore, the direct type surface light source device has been developed. The direct-type surface light source device is generally used for a large-sized liquid crystal display panel, and the direct-surface light source device must satisfy the requirements of high luminance, high uniformity, and wide viewing angle. [0004] At present, a light source of a direct type surface light source device generally employs a cold cathode fluorescent lamp (CCFL). However, cold cathode fluorescent lamps contain mercury, which is a material that is extremely unfavorable to the environment and does not meet environmental requirements. SUMMARY OF THE INVENTION 094131024 Form No. A0101 Page 4 / Total 16 Page 1003059843-0 100 February 22, 2011, Correction Replacement Page 1344168 [0005] Hereinafter, an electron source having high electron emission rate will be described by way of example The utility model has the advantages of long life and a surface light source device using the electron source. The surface light source device has high brightness and does not contain mercury, and meets environmental protection requirements. In order to achieve the above, the embodiment provides an electron source, the electron source includes: a pair of electromagnetic coils; a plurality of filaments between the pair of electromagnetic coils, the pair of electromagnetic coils for heating the plurality of filaments to emit electrons of the plurality of filaments And a cathode which is oppositely disposed, and a cavity is formed between the two cathodes, the cavity has a first opening and a second opening opposite to the first opening, the second opening is larger than the first opening, the pair of electromagnetic The coil and the plurality of filaments are located at the second opening, and the electrons emitted by the filament exit from the first opening. [0007] The width of the first opening is 5 millimeters (mm). [0008] The two planes where the two cathodes are located form an angle. [0009] The angle of the included angle is 40 to 120 degrees. [0010] the two cathodes have a dielectric layer on each of the two surfaces facing the electron source. The electron source further includes a barrier gate and an acceleration pole, and the barrier gate is located between the first opening and the acceleration pole. . [0012] In order to achieve the above, the embodiment further provides a surface light source device comprising a plurality of electron sources, an anode, and an inert gas between the plurality of electron sources and the anode. The anode includes an anode conductive layer and a phosphor layer formed on the anode conductive layer, the phosphor layer being opposite to the plurality of electron sources. Each electron source comprises: a pair of electromagnetic coils; a plurality of filaments between the pair of electromagnetic coils, the pair of electromagnetic coils for heating the plurality of filaments to make a complex 094131024 Form No. A0101 Page 5 of 16 pages 1003059843-0 1344168 _- 100 On February 22nd, the replacement page number of filaments emits electrons; and two relatively inclined cathodes, a cavity is formed between the two cathodes, the cavity has a first opening and a second opening opposite to the first opening, the first The two openings are larger than the first opening, and the pair of electromagnetic coils and the plurality of filaments are located at the second opening, and the electrons emitted by the filament are emitted from the first opening. [0013] The width of the first opening is 5 mm. [0014] The two planes where the two cathodes are located form an angle. [0015] The angle of the included angle is 40 to 120 degrees. [0016] the two cathodes have a dielectric layer on each of the two surfaces facing the electron source. [0017] The electron source further includes a barrier gate and an acceleration pole, and the barrier gate is located between the first opening and the acceleration pole . Compared with the prior art, in the electron source provided by the embodiment of the present invention, the shapes of the two cathodes are eight-shaped, which can improve the emission rate of electrons. The two cathodes each have a dielectric layer facing the outside of the electron source, which protects the two cathodes and prevents the two cathodes from being bombarded by secondary electrons and ions to reduce the service life. The surface light source device using the electron source has a high ionization rate of the inert gas, and realizes high luminance of the surface light source device. The surface light source device does not contain mercury, which is harmful to the environment, and meets environmental protection requirements. [Embodiment] The present invention will be further described in detail below with reference to the accompanying drawings. [0020] Please refer to the first figure and the second figure together. An electronic source 20 according to an embodiment of the present invention includes a pair of electromagnetic coils 201, a plurality of filaments 202, and two 094131024 forms No. A0101, page 6 of 16 1003059843-0 1344168 On February 22, 100, replace the cathodes 203, 203'. [0021] A plurality of filaments 202 are positioned between the pair of electromagnetic coils 201 such that the pair of electromagnetic coils 201 heat the plurality of filaments 202 to cause the plurality of filaments 202 to emit electrons. The two cathodes 2 0 3, 2 0 3 ' are relatively inclined. A cavity 200 is formed between the two cathodes 2 0 3 and 203'. The cavity 200 has a first opening 207 and a second opening 208. The second opening 2 〇 8 is larger than the first opening 207. The pair of electromagnetic coils 201 and the plurality of filaments 202 are located at the second opening 208, and electrons emitted from the plurality of filaments 202 are emitted from the first opening 207. Preferably, the width X of the first opening 207 is 55. The two planes where the two cathodes 203, 203' are located form an inflammatory angle with an angle of 40 to 120 degrees. Thus, the shapes of the two cathodes 203, 203' are eight-shaped, which can increase the emission rate of electrons. [0022] In order to prevent the two cathodes 203, 203' from being bombarded by secondary electrons and ions, the service life is reduced. 'Two cathodes 203, 203' The two surfaces facing the outside of the electron source 2 have a dielectric layer 204, which serves to protect the two cathodes 203, 203'. The material of the dielectric layer 2〇4 can be selected from Oxidation (Α1 203), Magnesium Oxide (Mg〇) or Sebite (Si〇2). [0023] The electron source 20 further includes a barrier Grid 2 〇 5 (Screen Grid) and an accelerating pole 206 (ACCelerat 〇 Grid), and the barrier gate 2 〇 5 is located between the first opening 207 and the accelerating pole 206. The accelerating pole 2〇6 is used to increase the electric field strength, causing the electrons to accelerate to obtain greater kinetic energy, and the barrier gate 205 concentrates the electrons to avoid scattering. Referring to FIG. 3 and FIG. 4 together, a surface light source device 2 according to an embodiment of the present invention includes a plurality of the above-mentioned electron sources 2 〇 and a cathode substrate 21 094131024 Form No. A0101 Page 7 / Total 16 Page 1003059843- 0 [0024] 1344168
100^¾ 22日粒雜頁I 、一陽極22、一陽極基板23、惰性氣體25及一封裝體24 〇 _]陰極基板21驗承載複數電子㈣。陽極22形成於陽極 基板23朝向面光源裝置2内部之表面上，該陽極22包括一 陽極導電層222及一形成於陽極導電層222朝向面光源裝 置2内部之表面上之螢光層221，該螢光層221與複數電子 源20相對，本實施例中，螢光層221之材料選自白光螢光 粉’厚度為500奈米（nm)〜50微米（/z m)，優選為卜1〇私 m。陽極導電層222之材料可選自氧化銦錫（IT0)、氧化 鋅（ΖηΟ)或氧化鋅銦（ιη (^-ζηο)。 L u · [0026] 封裝體24分別與陰極基板21及陽極基板23連接以形成一 密封之空間，該空間内有惰性氣體25，惰性氣體2 5可選 自以下混合氣體之一：氖氙混合氣體，氬氖混合氣體， 氬齓现混合氣體’氬氦氖氣混合氣體或氖氤氣氬混合氣 體’優選為氖氙混合氣體。陰極基板？1與陽極基板23可 選用透明之玻璃板。面光源裝置2之厚度Y—般為1〜1〇楚 米（cm)，優選為2〜5cm ’面光源裝鞏2之發光面積可根據 實際情況來決定。 [0027] 面光源裝置2工作時，電磁線圈201對複數燈絲進202行加 熱使其發射電子，電子經兩陰極203、203’與陽極22間 之電Μ及加速極206加速獲得動能而向陽極22方向出射， 電子撞擊惰性氣體25分子使惰性氣體25電離，惰性氣體 25電離過程之同時發射出紫外線，紫外線激發螢光層221 使螢光層221發出可見光。由於電子源20之電子出射率高 ，使惰性氣體25電離率高，從而使面光源裝置2之輝度高 094131024 表單編號Α0101 第8頁/共16頁 1003059843-0 1344168 100年02月22日 [0028] 本實施例所提供之電子源20， 具兩陰極203、203，之形 狀呈八字形’可提高電子之出射率。 ^ 兩陰極203、203， 朝向電子源外部之兩表面各具有— 匀電介質層204,可保護 兩陰極2 0 3、2 0 3 ’ ’避免兩陰極n q &極203、2〇3’受到二次電 子及離子之轟擊而降低使用壽命。 #用該電子源20之面 光源裝置2，其惰性氣體25電離率古 羊阿’實現面光源裝置2 之高輝度。面光源裝置2内不含對搭比 3對有害之物質汞，符 合環保要求。 [_综上所述’本發明確已符合發㈣獻要件，遂依法提 出專利中請。惟’以上所述者僅為本發明之較佳實施例 ，自不能以此限制本案之申讀專利滅園。舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0030]第一圖係本發明實施例提供之一種電子源之立體示意圖 [0031] 第二圖係第一圖所示電子源之左視圖。 [0032] 第三圖係本發明實施例提供之一種面光源裝置之立體示 意圖。 [0033] 第四圖係第三圖所示面光源裝置沿I丨丨丨！線之截面示意 圖。 【主要元件符號說明】 [0034] 電子源：20 094131024 表單編號Α0101 第9頁/共16頁 1003059843-0 1344168 [0035] 電磁線圈：201 [0036] 燈絲：202 [0037] 陰極：203、203’ [0038] 電介質層：204 [0039] 障柵極：205 [0040] 加速極：206 [0041] 第一開口 ： 207 [0042] 第二開口 ： 208 [0043] 面光源裝置：2 [0044] 陰極基板：21 [0045] 陽極：22 [0046] 陽極基板：23 [0047] 封裝體：24 [0048] 惰性氣體：25 [0049] 螢光層：221 [0050] 陽極導電層：222 [0051] 空腔：200 094131024 表單編號A0101 第10頁/共16頁 100年02月22日修正替換頁 1003059843-0100^3⁄4 22-day particle page I, an anode 22, an anode substrate 23, an inert gas 25, and a package 24 〇 _] The cathode substrate 21 carries a plurality of electrons (4). The anode 22 is formed on the surface of the anode substrate 23 facing the interior of the surface light source device 2. The anode 22 includes an anode conductive layer 222 and a phosphor layer 221 formed on the surface of the anode conductive layer 222 facing the interior of the surface light source device 2. The phosphor layer 221 is opposite to the plurality of electron sources 20. In this embodiment, the material of the phosphor layer 221 is selected from the group consisting of white light phosphor powder having a thickness of 500 nanometers (nm) to 50 micrometers (/zm), preferably 1 Å. Private m. The material of the anode conductive layer 222 may be selected from indium tin oxide (IT0), zinc oxide (ΖηΟ) or zinc indium oxide (ITO). The package 24 is respectively connected to the cathode substrate 21 and the anode substrate. 23 is connected to form a sealed space having an inert gas 25 therein, and the inert gas 25 may be selected from one of the following mixed gases: helium mixed gas, argon-helium mixed gas, argon-helium mixed gas 'argon helium gas The mixed gas or helium-argon mixed gas 'is preferably a helium mixed gas. The cathode substrate 1 and the anode substrate 23 may be selected from a transparent glass plate. The thickness Y of the surface light source device 2 is generally 1 to 1 cm (cm). Preferably, it is 2 to 5 cm. The light-emitting area of the surface light source can be determined according to the actual situation. [0027] When the surface light source device 2 is in operation, the electromagnetic coil 201 heats the plurality of filaments into the line 202 to emit electrons. The electric enthalpy and the accelerating pole 206 between the two cathodes 203, 203' and the anode 22 are accelerated to obtain kinetic energy and are emitted toward the anode 22. The electrons strike the inert gas 25 molecules to ionize the inert gas 25, and the inert gas 25 emits ultraviolet rays while ionizing. purple The line excitation phosphor layer 221 causes the fluorescent layer 221 to emit visible light. Since the electron emission rate of the electron source 20 is high, the ionization rate of the inert gas 25 is high, so that the luminance of the surface light source device 2 is high 094131024. Form No. Α0101 Page 8 of 16 pages 1003059843-0 1344168 100 February 22 [0028] The electron source 20 provided in this embodiment has two cathodes 203, 203, which are in the shape of a figure-eight to improve the electron emission rate. ^ Two cathodes 203, 203, the two surfaces facing the outside of the electron source each have a uniform dielectric layer 204, which can protect the two cathodes 2 0 3, 2 0 3 ' ' to avoid the two cathodes nq & the poles 203, 2〇3' are subjected to secondary electrons and ions Bombardment reduces the service life. #Use the surface light source device 2 of the electron source 20, the inert gas 25 ionization rate Guyang A 'realizes the high brightness of the surface light source device 2. The surface light source device 2 does not contain harmful effects on the pair 3 The substance mercury meets the requirements of environmental protection. [_In summary, the invention has indeed met the requirements of the (4) offer, and the patent is filed according to law. However, the above is only the preferred embodiment of the present invention. To limit the application for patent in this case The equivalent modifications or variations made by those skilled in the art to the spirit of the present invention are intended to be included in the scope of the following claims. [FIG. 1] The first figure is provided by the embodiment of the present invention. [0031] The second figure is a left side view of the electron source shown in the first figure. [0032] The third figure is a perspective view of a surface light source device provided by an embodiment of the present invention. The four-picture system shown in the third figure is along the I 丨丨丨! A schematic cross-section of the line. [Main component symbol description] [0034] Electronic source: 20 094131024 Form number Α 0101 Page 9 / Total 16 pages 1003059843-0 1344168 [0035] Electromagnetic coil: 201 [0036] Filament: 202 [0037] Cathode: 203, 203' [0038] Dielectric layer: 204 [0039] Barrier gate: 205 [0040] Acceleration pole: 206 [0041] First opening: 207 [0042] Second opening: 208 [0043] Surface light source device: 2 [0044] Cathode Substrate: 21 [0045] Anode: 22 [0046] Anode substrate: 23 [0047] Package: 24 [0048] Inert gas: 25 [0049] Phosphor layer: 221 [0050] Anode conductive layer: 222 [0051] Empty Cavity: 200 094131024 Form No. A0101 Page 10/Total 16 Page 100 February 22 Revision Replacement Page 1003059843-0