201205798 [0001] [0002] [0003] [0004] [0005] 099125280 發明說明： 【發明所屬之技術領域】 本發明有關於一種白光發光二極體，尤指一種具有不同 色溫以達到調光功能之白光發光二極體。 【先前技術】 發光二極體（Light Emitted Diode, LED)為一種半導 體元件，主要透過半導體化合物將電能轉換為光能，達 到發光的效果，因此具有壽命長、穩定性高及耗電量小 等特性。初期主要作為指示燈、交通號誌或招牌看板用 燈，隨著白光發光二極體的出現，開始被應用於照明設 備。 傳統白光發光二極體的製作方式是於藍光發光二極體晶 片上塗佈黃色的在乙銘石權石系（Yttrium Alum i num Garnet，YAG)螢光粉，當該黃色螢光粉被藍光激發後， 其所產生的黃光與原先用於激發的藍光進行混光而產生 白光。 然而，由於藍光發光二極體晶片與該黃色螢光粉所製作 的白光發光二極體，藍光佔光譜的大部分，因此會有色 溫偏高與混光不均勻的現象。 另外，亦有部份廠商將上述之白光發光二極體搭配紅光 發光二極體或綠光發光二極體進行混光，形成一光源模 組，以中和該白光發光二極體色溫偏高的問題。但由於 個別顏色的發光二極體分別由不同的材料製成，其驅動 電壓也有所差異，造成電路設計上的困難度提高；且個 別顏色的發光二極體的溫度特性與壽命並不相同，使得 表單編號A0101 第4頁/共16頁 0992044431-0 201205798 不同光源模組的光色與使用週期亦有所差異 上的不便。 ，造成使用 [0006] 鑒於先前技術所述，為解決傳統白光發光一極 高、混光不均勻及使用上便利度不佳等問題’本發月 一目的，在於提供一種可同時產生不同色^之白光並 混合該等白光以調整色溫之白光發光二極鑛。201205798 [0001] [0001] [0003] [0004] [0005] 00005125280 Description of the Invention: [Technical Field] The present invention relates to a white light emitting diode, and more particularly to a color temperature having a different color temperature to achieve a dimming function. White light emitting diode. [Prior Art] A Light Emitted Diode (LED) is a semiconductor element that mainly converts electrical energy into light energy through a semiconductor compound to achieve a light-emitting effect, thereby having a long life, high stability, and low power consumption. characteristic. In the early days, it was mainly used as an indicator light, a traffic sign or a signboard lamp, and it was used as a lighting device with the appearance of a white light emitting diode. The conventional white light emitting diode is fabricated by coating a yellow Yttrium Alum i num Garnet (YAG) phosphor powder on a blue light emitting diode wafer, when the yellow fluorescent powder is blue light. After excitation, the yellow light produced by it is mixed with the blue light originally used for excitation to produce white light. However, due to the blue light-emitting diode chip and the white light-emitting diode made of the yellow phosphor powder, blue light accounts for most of the spectrum, and thus there is a phenomenon that the color temperature is high and the light mixing is uneven. In addition, some manufacturers combine the above-mentioned white light emitting diode with a red light emitting diode or a green light emitting diode to form a light source module to neutralize the color temperature of the white light emitting diode. High problem. However, since the LEDs of the individual colors are respectively made of different materials, the driving voltages are also different, which causes the difficulty in circuit design to be improved; and the temperature characteristics and lifetimes of the LEDs of the individual colors are not the same. Form number A0101 Page 4 / 16 pages 0992044431-0 201205798 The light color and life cycle of different light source modules are also inconvenient. [0006] In view of the prior art, in order to solve the problems of high brightness, uneven light mixing, and poor use in the conventional white light, the purpose of the present invention is to provide a color that can be simultaneously generated. The white light and the white light are mixed to adjust the color temperature of the white light emitting dipole.
G 為達上述目的，本發明提供一種白光發光二極體，包含 一發光二極體晶片、一第一波長轉層及一第二波長轉 換層。 該發光二極體晶片包含一第一發光區間及一第二發光區 間，該第一發光區間與該第二發光區間分別導通有至少 二電流，該發光二極體晶片係發出一藍光a 該第一波長轉換層設置於該第一發光區間上，該第一波 長轉換層受藍光激發後產生一第一轉換光線，該第一轉 換光線並與藍光混光成一暖白光谏.。 Ο 該第二波長轉換層設置於該第二發光區間上，該第二波 長轉換層受藍光激發後產生二第三轉換光線，該第二轉 換光線並與藍光混光成一冷白光線；藉由控制該等電流 之電流量，以調整各該發光區間之發光強度，並達到白 光發光二極體色溫的調整。 本發明之白光發光二極體將一發光二極體晶片區分成至 少二區間，並於不同的區間塗佈有相異的波長轉換層， 使得該等區_時產生不同色溫之白光，再透過混合該 等不同色概的白光’達到白光發光二極體色溫的調整。 其整體製備過程簡便，且有效決 099125280 表單祕麵 第5頁/共16頁 九色之 0992044431-0 201205798 [0007] [0008] [0009] [0010] 099125280 發光一極體調整色溫所造成之發光二極體使用壽命不等 及驅動電壓不同造成電路設計繁複的問題。 【實施方式】 配合參閱第一圖與第二圖，分別為本發明第一實施例之 白光發光二極體之上視圖與剖視圖。該白光發光二極體i 包含有一藍光發光二極體晶片1〇、一第一波長轉換層2〇 、一第二波長轉換層30。 該藍光發光二極體晶片10係發出一藍光，該藍光發光二 極體晶片1〇包含一第一發光區間12及一第二發光區間14 ，且该第一發光區間1 2導通有一第一電流11，該第二發 光區間14導通有一第二電流12。於本實施例中，該藍光 發光二極體晶片10包含十六個呈矩陣式排列之發光單元 1〇〇，該第一發光區間12及該第二發光區間14則分別包含 八個串聯連接的發光單元100，但於實際使用上，並不以 此為限。 ... ..：；：：：： 配合參閱第三圖與第四圖，為本發明之白光發光二極體 之電極連接方式之上視圖與剖視圖。該第—發光區間12 與該第二發光區間14分別包含多數之發光單元1〇〇，各該 發光單元100間係利用導電單元102串聯連接，該串聯連 接方式是將多個發料元_的正極對負極連接成串，使 通過該等發光單元1〇〇的電流皆相等。 復參閱第-圖與第二圖’該第—波長轉換層2()設置於該 第-發光區間12 ’該第-波長轉換層2()包含黃色光致發 光勞光粉與紅色絲發光螢光粉，可吸㈣波長的藍光 而發光較長波長的光。當該第—發光區間12導通有該第 表單編號A0101 第6頁/共16頁 ' 0992044431-0 201205798 一電流II時，設置於該第一發光區間12之第一波長轉換 層20受藍光激發後產生一第一轉換光線L1，並且該第一 轉換光線L1與藍光混光成一暖白光線Lw，其中該暖白光 線係指在2670K至3800K之色溫範圍。 [0011] 〇 該第二波長轉換層30設置於該第二發光區間14，該第二 波長轉換層30包含黃色光致發光螢光粉。當該第二發光 區間14導通有該第二電流12時，設置於該第二發光區間 14之第二波長轉換層30受藍光激發後產生一第二轉換光 線L2，並且該第二轉換光線L2與藍光混光成一冷白光線 Lc，其中該冷白光線係指在5000K至10000K之色溫範圍 [0012] 當該第一發光區間12與該第二發光區間14分別同時導通 有第一電流11與第二電流12時，該第一發光區間12與該 第二發光區間14之中間地帶係產生一混合該暖白光線Lw 與該冷白光線Lc之中性白光線，其中該中性白光線係指 在3800K至5000K之色溫範圍。 〇 [0013] 並且，當該第一發光區間12之發光單元100的數目等於該 第二發光區間14之發光單元數目100時，透過控制流經該 第一發光區間12與該第二發光區間14之該第一電流11與 該第二電流12之電流量的大小亦可達到控制該白光發光 二極體1之色溫的功能，其中該電流量的大小正比於該發 光區間所發出光線之光強度的大小。當第一電流11的電 流量等於第二電流12的電流量時，暖白光線Lw的光強度 與該冷白光線Lc的光強度相等，該白光發光二極體1發出 一中性白光線；當該第一電流11大於該第二電流12時， 099125280 表單編號A0101 第7頁/共16頁 0992044431-0 201205798 该日友白光線Lw的光強度大於該冷白光線Lc的光強度該 白光發光二極體1發出一偏暖白之中性白光線，或者當該 第二電流12為零時，該白光發光二極體1發出-暖白光線 ，當該第-電流II小於該第二電流12時，該暖白光線Lw 的光強度小於該冷白光線Lc的光強度，該白光發光二極 體1發出-偏冷白之_性白光線，或者當該第一電流⑽ 零時，該白光發光二極體丨發出一冷白光線。 [0014] 配合參閱第五圖，為本發明第二實施例之白光發光二極 體之上視圖。本實施例之白光發光4極體與上述實施例 之白光發光二極體最大的差別在翁該襄先發光二極體晶 片10之發光區間12的分布方式。本實施例中之藍光發光 二極體晶片10之第一發光區間丨2與該第二發光區間14呈 交錯的6¾:置，並於對應該第一發光區間12與該第二發光 區間14設置該第一波長轉換層2〇與該第二波長轉換層3〇 。當該第一發光區間12與碎第二發光區間分別導通有該 第電"μ· II與第一電流12時，該第一發光區間12與該第 二發光區間14將對應產生該暖白光線^與冷白光線Lc， 且該第一發光區間12與該第二發光區間14所產生之該暖 白光線Lw與冷白光線Lc光線經混合後係產生中性白光線 。特別的是’由於第一發光區間12與該第二發光區間14 呈乂錯設置，致使混合後之中性白光線的均勻度大幅提 升。 配合參閱第六圖’為一色温座標圖。該色溫座標圖分別 色溫6000K、色溫4000K與色溫3000K的位置做標示，其 中色溫6000K為冷白光線，色溫4000K為中性白光線，色 099125280 表單編號A0101 第8頁/共16頁 0992044431-0 [0015] 201205798 溫300OK為暖白光線。 [0016] 下列表格為本發明之白光發光二極體的量測數據，於本 實施例中，該白光發光二極體包含六個呈矩陣排列之發 光單元，該第一發光區間及該第二發光區間分別包含三 個串聯連接的發光單元100，其中該第一發光區間及該第 二發光區間分別流經第一電流及第二電流，且第一電流 的電流量等於第二電流的電流量，以分別針對六個可發 出不同色溫之發光單元進行量測。其中編號1至6係針對 上述六個發光單元進行色溫的量測。表中編號1、2、3之 發光單元之X、Y座標分別為（0. 3263, 0. 3397)、 (0. 3266, 0. 3394)、（0. 3263, 0· 3398)，其座標位置分 別對應色溫6021K、5980K、6051K，供發出冷白光線。 表中編號4、5、6之發光單元之X、Y座標分別為 (0·4404, 0.41 60)、（0.4410, 0.4150)、 (0. 4422, 0. 41 62)，其座標位置分別對應色溫3012K、 2990K、2982K，供發出暖白光線。表中編號7為組合六 個不同色溫之發光單元所組成之白光發光二極體的混光 量測數據，該混光後的白光發光二極體之於色溫座標之 位置為（0. 3752, 0. 3733)，該位置的對應色溫為4108K ，係供發出一中性白光線。 [0017] X抽座標位置 Y轴座標位置 色溫（K) 1 0.3263 0.3397 6021 2 0.3266 0.3394 5980 3 0. 3263 0.3398 6051 4 0.4404 0.4160 3012 表單編號A0101 第9頁/共16頁 0992044431-0 099125280 201205798 5 0.4410 0.4150 2990 6 0.4422 0.4162 2982 7 0. 3752 0.3733 4108 綜合以上所述，本發明之白光發光二極體將一藍光發光 二極體晶片區分成至少二區間，並於不同的區間塗佈相 異的波長轉換層，使得該等區間透過至少二電流，利用 該等電流之電流大小，選擇性導通該等區間，以同時產 生不同色溫之白光，再透過混合該等不同色溫的白光， 達到白光發光二極體色溫的調整，以增加其調光性。本 發明整體製備過程簡便，且有效地解決因使用不同光色 之發光二極體調整色溫所造成之發光二極體使用壽命不 等及驅動電壓不同造成電路設計繁複的問題。 [0018] 然以上所述者，僅為本發明之較佳實施例，當不能限定 本發明實施之範圍，即凡依本發明申請專利範圍所作之 均等變化與修飾等，皆應仍屬本發明之專利涵蓋範圍意 圖保護之範疇。 【圖式簡單說明】 [0019] 第一圖為本發明第一實施例之白光發光二極體之上視圖 〇 [0020] 第二圖為本發明第一實施例之白光發光二極體之剖視圖 〇 [0021] 第三圖為本發明之發光二極體晶片之電極連接方式之上 視圖。 [0022] 第四圖為本發明之發光二極體晶片之電極連接方式之剖 099125280 表單編號A0101 第10頁/共16頁 0992044431-0 201205798 [0023] 視圖。 第五圖為本發明第二實施例之白光發光二極體之上視圖 〇 [0024] 第六圖為一色溫座標圖。 [0025] 【主要元件符號說明】 1白光發光二極體 [0026] 10藍色發光二極體晶片 ^ [0027] Ο 12第一發光區間 [0028] 14第二發光區間 [0029] 100發光單元 [0030] 102導電單元 [0031] 20第一波長轉換層 [0032] 30第二波長轉換層 [0033] L1第一轉換光線 [0034] L2第二轉換光線 [0035] Lc暖白光線 [0036] Lw冷白光線 099125280 表單編號A0101 第11頁/共16頁 0992044431-0In order to achieve the above object, the present invention provides a white light emitting diode comprising a light emitting diode chip, a first wavelength conversion layer and a second wavelength conversion layer. The light emitting diode chip includes a first light emitting interval and a second light emitting interval, wherein the first light emitting interval and the second light emitting portion are respectively turned on by at least two currents, and the light emitting diode chip emits a blue light. A wavelength conversion layer is disposed on the first light-emitting interval, and the first wavelength conversion layer is excited by the blue light to generate a first converted light, and the first converted light is mixed with the blue light to form a warm white light. The second wavelength conversion layer is disposed on the second light-emitting interval, and the second wavelength conversion layer is excited by the blue light to generate two third converted light rays, and the second converted light is mixed with the blue light to form a cool white light; The amount of current of the currents is controlled to adjust the luminous intensity of each of the light-emitting sections and to adjust the color temperature of the white light-emitting diodes. The white light emitting diode of the present invention divides a light emitting diode chip into at least two intervals, and is coated with different wavelength conversion layers in different intervals, so that the white light of different color temperatures is generated in the same area, and then transmitted. The white light of the different colors is mixed to achieve the adjustment of the color temperature of the white light emitting diode. The overall preparation process is simple and effective. The resolution is 099125280. The form of the form is 5th/16 pages. 992044431-0 201205798 [0007] [0008] [0009] [0010] 099125280 The brightness caused by the adjustment of color temperature The problem of complicated circuit design caused by the different lifetimes of the diodes and the different driving voltages. [Embodiment] Referring to the first and second figures, respectively, a top view and a cross-sectional view of a white light emitting diode according to a first embodiment of the present invention. The white light emitting diode i includes a blue light emitting diode chip 1 , a first wavelength conversion layer 2 , and a second wavelength conversion layer 30 . The blue light emitting diode chip 10 emits a blue light. The blue light emitting diode chip 1 includes a first light emitting section 12 and a second light emitting section 14 , and the first light emitting section 12 is electrically connected to a first current. 11. The second lighting interval 14 is turned on by a second current 12. In the embodiment, the blue light emitting diode chip 10 includes sixteen light emitting units 1 呈 arranged in a matrix, and the first light emitting section 12 and the second light emitting section 14 respectively comprise eight serially connected The light-emitting unit 100 is not limited to this in practical use. ....:::::: Referring to the third and fourth figures, it is a top view and a cross-sectional view of the electrode connection mode of the white light emitting diode of the present invention. The first light-emitting section 12 and the second light-emitting section 14 respectively include a plurality of light-emitting units 1 〇〇, and each of the light-emitting units 100 is connected in series by a conductive unit 102, which is a plurality of issue elements _ The positive electrode and the negative electrode are connected in series so that the currents passing through the light-emitting units 1 are equal. Referring to the first and second figures, the first wavelength conversion layer 2 () is disposed in the first light-emitting interval 12'. The first-wavelength conversion layer 2 () includes a yellow photoluminescence powder and a red filament. Light powder, which can absorb (four) wavelengths of blue light and emit longer wavelength light. When the first light-emitting interval 12 is turned on by the first form number A0101, page 6 / page 16 '920244431-0 201205798, the first wavelength conversion layer 20 disposed in the first light-emitting interval 12 is excited by the blue light. A first converted light L1 is generated, and the first converted light L1 is mixed with the blue light to form a warm white light Lw, wherein the warm white light refers to a color temperature range of 2670K to 3800K. [0011] The second wavelength conversion layer 30 is disposed in the second light emitting interval 14, and the second wavelength conversion layer 30 includes yellow photoluminescent phosphor. When the second light-emitting interval 14 is turned on by the second current 12, the second wavelength conversion layer 30 disposed in the second light-emitting interval 14 is excited by blue light to generate a second converted light L2, and the second converted light L2 Blending with the blue light into a cool white light Lc, wherein the cool white light refers to a color temperature range of 5000K to 10000K. [0012] When the first light emitting interval 12 and the second light emitting interval 14 are simultaneously turned on, the first current 11 is When the second current 12 is 12, the middle zone of the first lighting section 12 and the second lighting section 14 generates a neutral white light that is mixed with the warm white light Lw and the cool white light Lc, wherein the neutral white light is Refers to the color temperature range of 3800K to 5000K. [0013] Further, when the number of the light emitting units 100 of the first light emitting section 12 is equal to the number of light emitting units 100 of the second light emitting section 14, the transmission control flows through the first lighting section 12 and the second lighting section 14 The magnitude of the current of the first current 11 and the second current 12 can also reach the function of controlling the color temperature of the white light emitting diode 1, wherein the magnitude of the current is proportional to the light intensity of the light emitted by the light emitting interval. the size of. When the current amount of the first current 11 is equal to the current amount of the second current 12, the light intensity of the warm white light Lw is equal to the light intensity of the cool white light Lc, and the white light emitting diode 1 emits a neutral white light; When the first current 11 is greater than the second current 12, 099125280 Form No. A0101 Page 7 / Total 16 Page 0992044431-0 201205798 The light intensity of the white light Lw is greater than the light intensity of the cool white light Lc. The diode 1 emits a warm white neutral white light, or when the second current 12 is zero, the white light emitting diode 1 emits a warm white light when the first current II is smaller than the second current At 12 o'clock, the light intensity of the warm white light Lw is less than the light intensity of the cool white light Lc, and the white light emitting diode 1 emits a white light that is off-white, or when the first current (10) is zero, The white light emitting diode emits a cool white light. [0014] Referring to FIG. 5, a top view of a white light emitting diode according to a second embodiment of the present invention is shown. The maximum difference between the white light emitting diode of the present embodiment and the white light emitting diode of the above embodiment is the distribution pattern of the light emitting section 12 of the light emitting diode wafer 10. The first light-emitting interval 丨2 of the blue light-emitting diode wafer 10 in this embodiment is interleaved with the second light-emitting interval 14 and is disposed corresponding to the first light-emitting interval 12 and the second light-emitting interval 14 The first wavelength conversion layer 2 is coupled to the second wavelength conversion layer 3A. When the first light-emitting section 12 and the second light-emitting section respectively turn on the first electric quantity "μ· II and the first current 12, the first light-emitting section 12 and the second light-emitting section 14 will correspondingly generate the warm white The light ray and the cool white light Lc, and the warm white light Lw and the cool white light Lc light generated by the first light-emitting interval 12 and the second light-emitting interval 14 are mixed to generate neutral white light. In particular, since the first light-emitting section 12 and the second light-emitting section 14 are arranged in an error, the uniformity of the neutral white light after mixing is greatly increased. Refer to Figure 6 for a color temperature coordinate map. The color temperature coordinate maps are marked with a color temperature of 6000K, a color temperature of 4000K and a color temperature of 3000K, wherein the color temperature is 6000K for cool white light, the color temperature is 4000K for neutral white light, and the color is 099125280. Form No. A0101 Page 8 / Total 16 Page 0992044431-0 [ 0015] 201205798 Warm 300OK is warm white light. [0016] The following table is the measurement data of the white light emitting diode of the present invention. In this embodiment, the white light emitting diode comprises six light emitting units arranged in a matrix, the first light emitting interval and the second The light-emitting sections respectively include three light-emitting units 100 connected in series, wherein the first light-emitting interval and the second light-emitting interval respectively flow through the first current and the second current, and the current amount of the first current is equal to the current amount of the second current , to measure for six light-emitting units that can emit different color temperatures. Among them, numbers 1 to 6 measure the color temperature for the above six light-emitting units. The X and Y coordinates of the light-emitting units numbered 1, 2, and 3 in the table are (0. 3263, 0. 3397), (0. 3266, 0. 3394), (0. 3263, 0·3398), and their coordinates are The positions correspond to color temperatures of 6021K, 5980K, and 6051K, respectively, for emitting cool white light. The X and Y coordinates of the light-emitting units numbered 4, 5, and 6 in the table are (0·4404, 0.41 60), (0.4410, 0.4150), (0. 4422, 0. 41 62), and the coordinate positions correspond to the color temperature. 3012K, 2990K, 2982K for warm white light. No. 7 in the table is a light-mixing measurement data of a white light-emitting diode composed of a combination of six different color temperature light-emitting units, and the position of the white light-emitting diode of the light-mixed light-emitting diode is (0. 3752, 0. 3733), the corresponding color temperature of this position is 4108K, which is used to emit a neutral white light. [0017] X-pitch coordinate position Y-axis coordinate position color temperature (K) 1 0.3263 0.3397 6021 2 0.3266 0.3394 5980 3 0. 3263 0.3398 6051 4 0.4404 0.4160 3012 Form number A0101 Page 9 / Total 16 page 0992044431-0 099125280 201205798 5 0.4410 0.4150 2990 6 0.4422 0.4162 2982 7 0. 3752 0.3733 4108 In summary, the white light emitting diode of the present invention divides a blue light emitting diode wafer into at least two intervals and applies different wavelengths in different intervals. The conversion layer is configured to pass the at least two currents, selectively use the currents of the currents to selectively turn on the intervals to simultaneously generate white light of different color temperatures, and then transmit the white light of the different color temperatures to achieve the white light emitting diodes. Body color temperature adjustment to increase its dimming. The overall preparation process of the invention is simple, and effectively solves the problem that the circuit design is complicated due to the unequal service life of the light-emitting diode caused by the adjustment of the color temperature of the light-emitting diodes of different light colors and the difference in driving voltage. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still belong to the present invention. The patent covers the scope of the intent to protect. BRIEF DESCRIPTION OF THE DRAWINGS [0019] The first figure is a top view of a white light emitting diode according to a first embodiment of the present invention. [0020] The second drawing is a cross-sectional view of a white light emitting diode according to a first embodiment of the present invention.第三[0021] The third figure is a top view of the electrode connection mode of the light-emitting diode wafer of the present invention. [0022] The fourth figure is a cross-sectional view of the electrode connection mode of the light-emitting diode chip of the present invention. 099125280 Form No. A0101 Page 10 of 16 0992044431-0 201205798 [0023] View. Figure 5 is a top view of a white light emitting diode according to a second embodiment of the present invention. [0024] The sixth figure is a color temperature coordinate map. [Description of main component symbols] 1 white light emitting diode [0026] 10 blue light emitting diode wafer ^ [0027] Ο 12 first light emitting section [0028] 14 second light emitting section [0029] 100 light emitting unit 102 conductive unit [0031] 20 first wavelength conversion layer [0032] 30 second wavelength conversion layer [0033] L1 first converted light [0034] L2 second converted light [0035] Lc warm white light [0036] Lw cool white light 099125280 Form No. A0101 Page 11 / Total 16 Page 0992044431-0