TWI584013B - A light guide plate with a positioning structure, a backlight module and a manufacturing method thereof - Google Patents
A light guide plate with a positioning structure, a backlight module and a manufacturing method thereof Download PDFInfo
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本發明係關於導光元件領域，尤其是一種可快速使燈條組設於導光板入光面中央之具定位結構導光板、背光模組及其製造方法。 The invention relates to the field of light guiding components, in particular to a positioning structure light guide plate, a backlight module and a manufacturing method thereof, which can quickly set the light bar group in the center of the light incident surface of the light guide plate.
背光模組為顯示裝置之光線來源，一般包括導光元件與光源，並利用導光元件導引光源光線，以形成面光源提供顯示面板達到顯示功效。由於背光模組為顯示裝置的光線來源，因此背光模組之組裝品質會影響顯示裝置的顯示效果，例如光源相對導光元件的入光角度與位置等，皆會影響導光元件對於光線的導引效果以及後續的出光均勻度。 The backlight module is a light source of the display device, generally includes a light guiding component and a light source, and uses the light guiding component to guide the light source light to form a surface light source to provide a display panel to achieve display efficiency. Since the backlight module is a light source of the display device, the assembly quality of the backlight module may affect the display effect of the display device. For example, the angle and position of the light source relative to the light guiding component may affect the light guiding component for light guiding. Leading effect and subsequent uniformity of light output.
以側入式背光模組為例，光源係固定於導光元件的側面，相對導光元件形成側向入射之光線。早期的固定方式採螺絲鎖附或黏著劑黏合以將光源固定於導光元件之入光面，然螺絲鎖附方式若鎖孔對位不正或鎖固螺絲時施力不均會毀損光源，且在組裝製程亦相當不便；另，若採黏著方式其固接強度不足且容易產生污染，黏貼時造成光源偏離預定位置，影響導光元件導引效果。 For example, in the side-lit backlight module, the light source is fixed to the side surface of the light guiding element, and the light guiding element forms a laterally incident light. In the early fixing method, the screw is attached or the adhesive is adhered to fix the light source to the light-incident surface of the light-guiding element. However, if the locking hole is misaligned or the screw is unevenly locked, the light source may be damaged, and In the assembly process, it is also quite inconvenient; in addition, if the bonding strength is insufficient and the contamination is easy to occur, the light source is deviated from the predetermined position when the adhesive is applied, which affects the guiding effect of the light guiding element.
而後，針對光源與導光元件固接方式，相關廠商係致力研發各類組裝方式以解決如前述缺失，其一方式為透過一輔助固定結構如框架，使具光源之燈條可固定於框架處，再將導光元件與框架組接以達成組設目的，如中華民國專利公開號第201506509號之發光裝置、平板燈及平面 顯示器，其揭露之發光裝置係包括第一邊框、燈條及導光板，透過將燈條設置於第一邊框內側之凹槽，且導光板入光面凸設有複數抵接部，當入光面之側***凹槽後，可藉抵接部抵接燈條使燈條被固定於凹槽內不會滑動。或如中華民國專利公開號第201015166號之背光模組及其應用與組裝方法，其揭露之背光模組包含框架、發光燈條與導光板，框架具有第一側邊、第二側邊、至少一位於框架內且平行第一側邊之側腔室、至少一開設於第二側邊之側開口，及至少一形成於側腔室內之第一定位結構，發光燈條經由側開口平行第一側邊而容設入於側腔室中，使發光燈條之出光面法線方向垂直第一側邊，導光板則設於框架內並位於發光燈條之一側。上述技術手段皆屬另透過一框架以固定導光元件與光源之結構，然，由於需再另增設框架，雖可提升光源與導光元件之組接強度，卻造成組裝不便以及增加製造成本的問題。 Then, for the way of fixing the light source and the light guiding element, the relevant manufacturers are working hard to develop various assembly methods to solve the above-mentioned missing, one way is to enable the light bar with the light source to be fixed to the frame through an auxiliary fixing structure such as a frame. Then, the light guiding element is connected with the frame to achieve the purpose of setting up, such as the illuminating device, the panel lamp and the plane of the Republic of China Patent No. 201506509 The display device includes a first frame, a light bar and a light guide plate. The light bar is disposed on the inner side of the first frame, and the light-incident surface of the light guide plate is convexly provided with a plurality of abutting portions. After the side of the face is inserted into the groove, the abutting portion abuts the light bar so that the light bar is fixed in the groove and does not slide. Or the backlight module of the Republic of China Patent Publication No. 201015166, and the application and assembly method thereof, the backlight module disclosed includes a frame, a light bar and a light guide plate, the frame having a first side, a second side, at least a side chamber located in the frame parallel to the first side, at least one side opening formed on the second side, and at least one first positioning structure formed in the side chamber, the light bar is parallel through the side opening The side is accommodated in the side chamber such that the normal direction of the light emitting surface of the light strip is perpendicular to the first side, and the light guide plate is disposed in the frame and located on one side of the light strip. The above technical means are both fixed through a frame to fix the structure of the light guiding element and the light source. However, since the frame needs to be additionally added, the bonding strength between the light source and the light guiding element can be improved, but the assembly is inconvenient and the manufacturing cost is increased. problem.
又或如中華民國專利號第M292704號之顯示器之光源電路板連接裝置，其係捨棄增設框架，而直接以導光元件與光源相扣合固定。顯示器之光源電路板連接裝置包含光源電路板、發光元件、呈勾狀之彈性件及連接體，發光元件與光源電路板電性連接，彈性件一段設於光源電路板，另段形成有具彈性之抵壓片，連接體相對彈性件設有嵌合部，以供抵壓片扣合於對應之嵌合部。其中連接體可為一導光板，亦即先於導光板上設有嵌合部，再利用一端設於電路板上的彈性件扣合於嵌合部，以組裝發光元件與導光板。然，由於導光板係屬光學元件，因此其上的任何細微結構皆可能影響光線導引效果，如該技術文獻揭示的嵌合部，為與抵壓片卡掣，故實際上位於導光板的嵌合部至少需具卡槽或抵觸面等結構，該些結 構在設計上須十分小心以避免影響光線導引，且繁複的結構對於導光板生產亦相當不便，故也易造成產品良率下降。 Or, as in the light source circuit board connecting device of the display of the Republic of China Patent No. M292704, the frame is discarded and the light guiding element is directly coupled to the light source. The light source circuit board connecting device of the display comprises a light source circuit board, a light emitting component, a hook-shaped elastic member and a connecting body, the light emitting component is electrically connected with the light source circuit board, the elastic component is disposed on the light source circuit board, and the other part is formed with elasticity The pressing piece is provided with a fitting portion with respect to the elastic member, so that the pressing piece is fastened to the corresponding fitting portion. The connecting body can be a light guide plate, that is, a fitting portion is disposed on the light guide plate, and an elastic member disposed on the circuit board at one end is fastened to the fitting portion to assemble the light emitting element and the light guide plate. However, since the light guide plate is an optical component, any fine structure thereon may affect the light guiding effect. For example, the fitting portion disclosed in the technical document is in contact with the pressing piece, so it is actually located on the light guiding plate. The fitting portion needs at least a structure such as a card slot or a contact surface, and the knots The structure must be designed with care to avoid affecting light guidance, and the complicated structure is also inconvenient for the production of the light guide plate, so it is also likely to cause a drop in product yield.
實際上，光源相對導光元件的安裝位置對於光線之利用效率以及光線導引效果具有極大影響，因此光源與導光元件在組裝固定時需精準地對位，以確保光線可充分進入導光元件內。上述各種組裝光源與導光元件的方式，其主要訴求僅在於如何快速、簡易組裝以及提升固定強度，即便可透過框架固定光源位置，但仍無法解決光源相對導光元件入光面的精準對位需求。且在導光元件漸趨輕薄的發展趨勢下，光源已不若前揭技術所述般可隨意位於入光面任意區域而皆具有一定的光線利用效率。因此，如何藉由光源與導光元件的相對位置確保導光元件的光線利用率以及後續出光均勻度，且同時兼顧組裝之便利與快速性，係為本發明人致力解決之缺失。 In fact, the mounting position of the light source relative to the light guiding element has a great influence on the light utilization efficiency and the light guiding effect, so the light source and the light guiding element need to be accurately aligned when assembled and fixed to ensure that the light can fully enter the light guiding element. Inside. The main requirements of the above various methods of assembling the light source and the light guiding element are only how to quickly and easily assemble and improve the fixing strength. Even if the position of the light source can be fixed through the frame, the accurate alignment of the light source with respect to the light incident surface of the light guiding element cannot be solved. demand. Moreover, under the trend that the light guiding element is gradually thinner and lighter, the light source can be arbitrarily located in any area of the light incident surface as described in the prior art, and has a certain light utilization efficiency. Therefore, how to ensure the light utilization efficiency of the light guiding element and the uniformity of subsequent light emission by the relative position of the light source and the light guiding element, and at the same time taking into account the convenience and rapidity of assembly, is a deficiency that the inventors have made to solve.
本發明之一目的，旨在提供一種具定位結構之導光板、背光模組及其製造方法，係可使燈條與導光板組設時，可精確地定位於導光板入光面中央，確保燈條光線可盡數由入光面進入導光板以被導引形成均勻出光。 An object of the present invention is to provide a light guide plate having a positioning structure, a backlight module, and a manufacturing method thereof, which can accurately position the light bar and the light guide plate in the center of the light incident surface of the light guide plate, thereby ensuring that the light bar and the light guide plate are assembled. The light of the light bar can be guided into the light guide plate by the light incident surface to be guided to form a uniform light.
為達上述目的，本發明於一實施方式中揭示一種具定位結構之背光模組，包括：一導光板，具有一入光面，且該入光面設有至少一定位槽；及一燈條，設於該入光面以提供側向光線，且該燈條對應該定位槽設有至少一定位柱，其中，組設該燈條至該導光板時，該定位柱插設於該定位槽中，藉此限定該燈條相對該入光面之設置高度，使該燈條對應位於 該入光面中央。透過定位槽與定位柱，限定組裝後之燈條位置，使光線可充分自入光面入射至導光板，防止燈條位置偏移造成光線照射至導光板外，影響導光板之光線利用效率及後續出光均勻度。 In one embodiment, the present invention discloses a backlight module having a positioning structure, comprising: a light guide plate having a light incident surface, wherein the light incident surface is provided with at least one positioning groove; and a light bar The illuminating surface is disposed on the illuminating surface to provide a lateral illuminating light, and the illuminating strip is disposed in the locating slot, and the locating post is inserted into the locating slot. Thereby, the height of the light bar relative to the light incident surface is limited, so that the light bar is correspondingly located The center of the entrance surface. Through the positioning slot and the positioning post, the position of the assembled light bar is limited, so that the light can be sufficiently incident on the light guide plate from the light entrance surface, preventing the light strip from being displaced from the light guide plate and causing the light to be used outside the light guide plate, thereby affecting the light utilization efficiency of the light guide plate and Subsequent light uniformity.
基於前述實施方式，本發明於另一實施方式中係揭露該燈條具有複數發光單元，且相鄰之該等發光單元展光範圍係相互交疊形成一交疊區，該交疊區與該入光面之最短距離為d，該定位槽之深度。於此透過限定定位槽深度，避免影響佈設於導光板微結構之取光效果。 In another embodiment, the present invention discloses that the light bar has a plurality of light emitting units, and adjacent light emitting ranges of the light emitting units overlap each other to form an overlapping area, and the overlapping area and the The shortest distance into the light surface is d, the depth of the positioning groove . In this way, by limiting the depth of the positioning groove, it is possible to avoid affecting the light-receiving effect of the micro-structure disposed on the light guide plate.
於再一實施方式中，該導光板之高度為H，該燈條具有複數發光單元，各該發光單元之高度為h，且H不大於3h。該實施方式中示意本發明之導光板可屬薄型導光板，當導光板厚度與發光單元接近時，對於燈條組設位置的要求更為嚴謹，一旦位置略偏，對於光線入射影響甚鉅，故透過該定位柱與定位槽係可使燈條固定於入光面中央處。 In still another embodiment, the height of the light guide plate is H, and the light bar has a plurality of light emitting units, each of the light emitting units has a height h and H is no more than 3 hours. In this embodiment, the light guide plate of the present invention can be a thin light guide plate. When the thickness of the light guide plate is close to the light-emitting unit, the position of the light bar assembly position is more strict. Once the position is slightly biased, the light incidence is greatly affected. Therefore, the light bar is fixed at the center of the light incident surface through the positioning post and the positioning groove system.
此外，次一實施方式中，該定位槽之深度為X1，該定位柱之長度為X2，且X2>X1。藉此，燈條與導光板組裝時可快速對位，並於組裝後使燈條與導光板形成一間距，以利於確認兩者對位狀況及保持適當距離避免導光板因受熱而產生變形。 In addition, in the second embodiment, the depth of the positioning groove is X 1 , the length of the positioning post is X 2 , and X 2 >X 1 . Thereby, the light bar and the light guide plate can be quickly aligned when assembled, and a distance between the light bar and the light guide plate is formed after assembly, so as to confirm the alignment condition and maintain a proper distance to prevent the light guide plate from being deformed by heat.
本發明於一實施方式中，進一步揭示一種具定位結構之背光模組製造方法，包括以下步驟：將複數導光板堆疊成批並對齊，以使各該導光板之一入光面構成一加工平面；利用一加工機具於該加工平面刻劃複數條溝槽，以分別形成展光微結構於各該入光面；於各該入光面加工形成至少一定位槽，該定位槽之高度低於該入光面；提供一燈條，其中該燈條對應該定位槽而具有至少一定位柱；及組設該燈條於該入光面，且該定位 柱插設於該定位槽中，使該燈條位於該入光面中央。依循上述步驟而先於導光板入光面加工形成溝槽，再接續形成定位槽，而後再與具定位柱之燈條相互組接，使燈條可固定於入光面中央處，且採同時針對多個導光板進行加工方式係可提升整體加工速率。 In an embodiment, the present invention further discloses a method for manufacturing a backlight module with a positioning structure, comprising the steps of: stacking a plurality of light guide plates in a batch and aligning them, so that one of the light guide plates is formed into a processing plane. And a plurality of grooves are formed on the processing plane by using a processing tool to form a light-expanding microstructure on each of the light-incident surfaces; and at least one positioning groove is formed on each of the light-incident surfaces, and the height of the positioning groove is lower than a light-emitting surface; a light bar, wherein the light bar has at least one positioning post corresponding to the positioning groove; and the light bar is disposed on the light-incident surface, and the positioning The column is inserted into the positioning groove such that the light bar is located at the center of the light incident surface. Following the above steps, the groove is formed before the light-incident surface of the light guide plate, and then the positioning groove is formed continuously, and then the light bar with the positioning column is assembled with each other, so that the light bar can be fixed at the center of the light-incident surface, and simultaneously Processing the multiple light guides increases the overall processing rate.
其中，鑒於雷射加工之技術成熟度與便利性，基於前述實施方式，係使該加工機具為一雷射機台，以快速並精準地於入光面形成溝槽與定位槽。 In view of the technical maturity and convenience of laser processing, based on the foregoing embodiment, the processing tool is a laser machine to form a groove and a positioning groove quickly and accurately on the light incident surface.
又本發明亦同步於另一實施方式中揭示一種具定位結構之導光板，用以供具有一定位柱之一燈條組設，包括：一入光面，用以接收該燈條所提供之光線；及至少一定位槽，位於該入光面，該定位槽之高度不大於該入光面之高度，用以供該定位柱插設於該定位槽中；藉此，該定位槽限定該燈條相對該入光面之設置高度，使該燈條對應位於該入光面中央。透過該導光板而可使燈條快速精準地對位並裝設於入光面中央處，進一步提升導光板之可用光線與出光均勻度。基於本實施方式，為更提升該導光板之效能，係衍生下述各實施方式內容。 The present invention is also disclosed in another embodiment, in which a light guide plate having a positioning structure is provided for a light bar assembly having a positioning post, comprising: a light incident surface for receiving the light bar provided by the light bar And the at least one positioning slot is located on the light incident surface, and the height of the positioning slot is not greater than the height of the light incident surface for the positioning post to be inserted into the positioning slot; thereby, the positioning slot defines the light The height of the light bar relative to the light incident surface is such that the light bar is correspondingly located at the center of the light incident surface. Through the light guide plate, the light bar can be accurately and accurately aligned and installed at the center of the light incident surface to further enhance the available light and light uniformity of the light guide plate. Based on the present embodiment, in order to further improve the performance of the light guide plate, the following embodiments are derived.
於一實施方式中，該燈條具有複數發光單元，且相鄰之該等發光單元之展光範圍係相互交疊形成一交疊區，且該交疊區與該入光面之最短距離為d，該定位槽之深度。於此透過限定定位槽深度，以防止其影響佈設於導光板微結構之取光效果。 In an embodiment, the light bar has a plurality of light-emitting units, and the light-expanding ranges of the adjacent light-emitting units overlap each other to form an overlap region, and the shortest distance between the overlap region and the light-incident surface is d, the depth of the positioning groove . In this case, the depth of the positioning groove is limited to prevent the light-receiving effect of the micro-structure disposed on the light guide plate from being affected.
於另一實施方式中，該導光板之高度為H，該燈條具有複數發光單元，各該發光單元之高度為h，且H不大於3h。於此揭示導光板高度略大於發光單元厚度，而藉由定位柱與定位槽可快速且準確地使燈條固 定於入光面中央處。 In another embodiment, the height of the light guide plate is H, the light bar has a plurality of light emitting units, each of the light emitting units has a height h, and H is no more than 3 h. The light guide plate height is slightly larger than the thickness of the light emitting unit, and the light bar can be quickly and accurately fixed by the positioning post and the positioning groove. It is set at the center of the entrance surface.
再一實施方式中，該定位槽之深度為X1，該定位柱之長度為X2，且X2>X1。藉此，燈條與導光板組裝時可快速對位，並於組裝後使燈條與導光板形成一間距，以利於確認兩者對位狀況及保持適當距離避免導光板因受熱而產生變形。 In still another embodiment, the positioning groove has a depth of X 1 , the positioning post has a length of X 2 , and X 2 >X 1 . Thereby, the light bar and the light guide plate can be quickly aligned when assembled, and a distance between the light bar and the light guide plate is formed after assembly, so as to confirm the alignment condition and maintain a proper distance to prevent the light guide plate from being deformed by heat.
綜上所述，本發明所揭露之導光板、背光模組及其組裝方法係可有效地使燈條固定於導光板入光面之中央處，而使燈條出光軸可自入光面垂直高度中心處入射，使導光板獲得最多可用光線能量，避免燈條偏移導致部分光線投射至導光板外，影響後續出光均勻度。尤其針對薄型導光板而言，由於導光板高度與燈條高度接近，只要燈條組設位置略偏，則會造成光線偏移而使導光板可用光能量降低，因此更需精準地定位燈條與導光板入光面之相對位置。是以透過該定位柱與定位槽，即可於組裝時快速並準確地限定燈條位置。此外，配合導光板取光用之微結構，亦可進一步限定定位槽之深度，防止其影響導光板其餘區域之取光設計。且為有效提升組裝對位效率與控制燈條與導光板組裝後之間距，亦可使定位柱高度大於定位槽深度以達前述功效。 In summary, the light guide plate, the backlight module and the assembling method thereof can effectively fix the light bar to the center of the light incident surface of the light guide plate, so that the light output shaft of the light bar can be perpendicular to the light entrance surface. Incident at the center of the height allows the light guide plate to obtain the most available light energy, avoiding the deviation of the light bar and causing some of the light to be projected outside the light guide plate, affecting the uniformity of subsequent light output. Especially for a thin light guide plate, since the height of the light guide plate is close to the height of the light bar, as long as the position of the light bar is slightly offset, the light is deflected and the light energy of the light guide plate is reduced, so it is more necessary to accurately position the light bar. The position opposite to the light incident surface of the light guide plate. Through the positioning post and the positioning groove, the position of the light bar can be quickly and accurately defined during assembly. In addition, in combination with the microstructure of the light guide plate for light extraction, the depth of the positioning groove can be further defined to prevent it from affecting the light extraction design of the remaining area of the light guide plate. In order to effectively improve the assembly alignment efficiency and control the distance between the light bar and the light guide plate assembly, the height of the positioning column can be made larger than the depth of the positioning groove to achieve the foregoing effects.
1‧‧‧背光模組 1‧‧‧Backlight module
10‧‧‧導光板 10‧‧‧Light guide plate
101‧‧‧入光面 101‧‧‧Into the glossy surface
102‧‧‧定位槽 102‧‧‧ positioning slot
103‧‧‧出光面 103‧‧‧Glossy surface
104‧‧‧底面 104‧‧‧ bottom
105‧‧‧溝槽 105‧‧‧ trench
11‧‧‧燈條 11‧‧‧Light strips
111‧‧‧定位柱 111‧‧‧Positioning column
112‧‧‧發光單元 112‧‧‧Lighting unit
2‧‧‧加工平面 2‧‧‧Processing plane
A‧‧‧交疊區 A‧‧‧ overlapping area
B‧‧‧暗區 B‧‧‧Dark area
C‧‧‧入光面之高度 C‧‧‧The height of the light surface
c‧‧‧定位槽之高度 C‧‧‧ Height of the positioning groove
X1‧‧‧定位槽深度 X 1 ‧‧‧Positioning groove depth
X2‧‧‧定位柱長度 X 2 ‧‧‧Position column length
d‧‧‧交疊區與入光面之最短距離 d‧‧‧The shortest distance between the overlapping area and the entrance surface
H‧‧‧導光板高度 H‧‧‧Light guide height
h‧‧‧發光單元高度 h‧‧‧Lighting unit height
S01~S05‧‧‧步驟 S01~S05‧‧‧Steps
第1圖，為本發明第一實施方式之立體分解圖。 Fig. 1 is an exploded perspective view showing a first embodiment of the present invention.
第2A圖，為本發明第一實施方式之組裝俯視圖。 Fig. 2A is an assembled plan view of the first embodiment of the present invention.
第2B圖，為本發明第一實施方式之部分放大示意圖。 Fig. 2B is a partially enlarged schematic view showing the first embodiment of the present invention.
第3圖，為本發明第一實施方式之組裝側視圖。 Fig. 3 is a side view showing the assembly of the first embodiment of the present invention.
第4圖，為本發明第二實施方式之方法步驟流程圖。 Figure 4 is a flow chart showing the steps of the method of the second embodiment of the present invention.
第5A圖，為本發明第二實施方式之導光板加工示意圖(一)。 FIG. 5A is a schematic view (1) of processing of a light guide plate according to a second embodiment of the present invention.
第5B圖，為本發明第二實施方式之導光板加工示意圖(二)。 FIG. 5B is a schematic view (2) of processing of the light guide plate according to the second embodiment of the present invention.
第5C圖，為本發明第二實施方式之導光板加工示意圖(三)。 FIG. 5C is a schematic view (3) of processing of the light guide plate according to the second embodiment of the present invention.
第6圖，為本發明第二實施方式之組裝示意圖。 Figure 6 is a schematic view showing the assembly of the second embodiment of the present invention.
現今背光模組中，多選用發光二極體(LED)作為光源，因此光源會具有一定出光角度。是以，當將光源與導光板相互組設時，需盡可能地讓光源位於導光板入光面中央，以讓光線順利被導光板所導引，避免驅動時部分光線投射至導光板外部，進而影響導光板的光線使用效率與後續出光，尤當光源高度接近導光板厚度時更需如此。故，鑒於此一需求，本發明人即構思可快速將光源定位於導光板入光面中央位置之具定位結構之背光模組，以確保應用時自光源射出的光線可順利進入導光板內。請參閱第1、2A、2B及3圖，其係分別為本發明第一實施方式之立體分解圖、組裝俯視圖、部分放大示意圖與組裝側視圖。該具定位結構之背光模組1包括一導光板10及一燈條11。 In today's backlight modules, a light-emitting diode (LED) is often used as a light source, so that the light source has a certain light-emitting angle. Therefore, when the light source and the light guide plate are assembled with each other, the light source should be placed in the center of the light incident surface of the light guide plate as much as possible so that the light is smoothly guided by the light guide plate, and part of the light is prevented from being projected to the outside of the light guide plate when driving. In turn, the light use efficiency of the light guide plate and the subsequent light output are affected, especially when the light source height is close to the thickness of the light guide plate. Therefore, in view of this demand, the inventors have conceived a backlight module with a positioning structure that can quickly position the light source at the center of the light incident surface of the light guide plate to ensure that the light emitted from the light source can smoothly enter the light guide plate during application. Please refer to Figures 1, 2A, 2B and 3, which are respectively an exploded perspective view, an assembled plan view, a partially enlarged schematic view and an assembled side view of the first embodiment of the present invention. The backlight module 1 with a positioning structure includes a light guide plate 10 and a light bar 11.
導光板10具有一入光面101，並於入光面101設有至少一定位槽102。其中，導光板10更具有分別垂直鄰接於入光面101之一出光面103與一底面104，且出光面103與底面104為相對設置。定位槽102截面可為矩形或圓形，亦可使定位槽102由入光面101朝向導光板10內側漸縮，較佳者，該定位槽102之高度c不大於入光面101之高度C，以防止影響光線自入光面101之入射效果。此外，為有效提升光線自入光面101進入導光 板10之光線角度，可於入光面101設置有一透鏡陣列，藉以增大入射光線角度，利於後續之光線導引。 The light guide plate 10 has a light incident surface 101, and at least one positioning groove 102 is disposed on the light incident surface 101. The light guide plate 10 further has a light-emitting surface 103 and a bottom surface 104 respectively adjacent to the light-incident surface 101, and the light-emitting surface 103 and the bottom surface 104 are opposite to each other. The positioning groove 102 can be rectangular or circular in cross section, and the positioning groove 102 can be tapered from the light incident surface 101 toward the inner side of the light guide plate 10. Preferably, the height c of the positioning groove 102 is not greater than the height C of the light incident surface 101. In order to prevent the influence of the incident light from entering the light surface 101. In addition, in order to effectively enhance the light from the light entrance surface 101 into the light guide The angle of the light of the board 10 can be provided with an array of lenses on the light incident surface 101 to increase the angle of the incident light for subsequent light guiding.
燈條11供設於入光面101以提供導光板10側向光線，且燈條11對應定位槽102設有至少一定位柱111，當將燈條11組設置導光板10時，定位柱111係插設於定位槽102中，藉此限定燈條11相對入光面101之設置高度，使燈條11對應位於入光面101中央，應用時燈條11產生之光線即受導光板10導引而自出光面103形成出光。換言之，藉由定位槽102與定位柱111之搭配，即可有效限定燈條11相對入光面101位置。詳細而言，燈條11之主出光軸會垂直入射通過入光面101短邊中心點且與其長邊平行之一中心線，避免燈條11位置過於靠近出光面103或是底面104，導致相對入光面101之入光角度偏移使部分光線投射至外界，進而降低光線使用效率與導光板10出光時之均勻度。此外，定位柱111之態樣可為矩形或圓形柱體，亦可如圖中所示，於接觸定位槽102之端呈尖錐狀，藉此可使導光板10與燈條11達快速定位功效。假若定位柱111與定位槽102為同一形狀態樣，例如其截面皆為圓形且尺寸相仿，則在組裝時勢必須耗費較多時間讓定位柱111與定位槽102相互對位並將定位柱111一端插設至定位槽102內，且當導光板10屬薄型態樣時，入光面101之高度C極低，定位槽102與定位柱111尺寸亦隨之減縮而形成極微小結構，此時若仍採用兩者為相同造型態樣之設計，上述問題即更趨嚴重，進而大幅提升組裝上的難度。 The light bar 11 is disposed on the light incident surface 101 to provide lateral light to the light guide plate 10, and the light bar 11 is provided with at least one positioning post 111 corresponding to the positioning groove 102. When the light bar 11 is disposed in the light guide plate 10, the positioning column 111 is disposed. It is inserted into the positioning groove 102, thereby defining the height of the light bar 11 relative to the light incident surface 101, so that the light bar 11 is correspondingly located at the center of the light incident surface 101, and the light generated by the light bar 11 is guided by the light guide plate 10 when applied. Light is formed from the light exit surface 103. In other words, by locating the positioning groove 102 and the positioning post 111, the position of the light bar 11 relative to the light incident surface 101 can be effectively defined. In detail, the main light exiting axis of the light bar 11 is perpendicularly incident through a center line of the short side center point of the light incident surface 101 and parallel to the long side thereof, so as to prevent the light bar 11 from being positioned too close to the light emitting surface 103 or the bottom surface 104, resulting in relative The incident light angle of the light incident surface 101 shifts part of the light to the outside, thereby reducing the light use efficiency and the uniformity of the light guide plate 10 when it is emitted. In addition, the position of the positioning post 111 may be a rectangular or circular cylinder, or may be tapered at the end of the contact positioning groove 102 as shown in the figure, thereby making the light guide plate 10 and the light bar 11 fast. Positioning efficiency. If the positioning post 111 and the positioning groove 102 are in the same shape state, for example, the cross-sections are all circular and the dimensions are similar, it is necessary to spend more time in the assembly to position the positioning post 111 and the positioning groove 102 to each other and to position the column 111. One end is inserted into the positioning slot 102, and when the light guide plate 10 is in a thin shape, the height C of the light incident surface 101 is extremely low, and the positioning groove 102 and the positioning post 111 are also reduced in size to form a very minute structure. If the design of the same shape is still adopted, the above problems become more serious, which greatly increases the difficulty of assembly.
其中，燈條11具有複數發光單元112，且該些發光單元112係呈間隔設置，並分別為一LED。相鄰發光單元112之展光範圍係交互交 疊形成一交疊區A，且該交疊區A與入光面101的最短距離為d，當定位槽102之深度為X1時，則。此一條件限定原因在於，由於導光板10在相鄰發光單元112之展光範圍外會形成暗區B，如第2A及2B圖所示，亦即由交疊區A邊緣朝向入光面101延伸距離d並與各發光單元112展光範圍邊緣所夾設區域，為導引部分光線至暗區B，因此在出光面103或底面104對應暗區B位置內多半會設置供以取光之微結構，藉以調整發光單元112的展光角度。故為了避免定位槽102影響取光微結構效能，因此需使定位槽102深度X1不可超過。 The light bar 11 has a plurality of light emitting units 112, and the light emitting units 112 are arranged at intervals, and are respectively an LED. The light-expanding ranges of the adjacent light-emitting units 112 are alternately overlapped to form an overlapping area A, and the shortest distance between the overlapping area A and the light-incident surface 101 is d. When the depth of the positioning groove 102 is X 1 , then . The reason for this limitation is that the light guide plate 10 forms a dark region B outside the light-expanding range of the adjacent light-emitting unit 112, as shown in FIGS. 2A and 2B, that is, the edge of the overlap region A faces the light-incident surface 101. The distance d is extended from the edge of the light-expanding range of each of the light-emitting units 112 to guide the partial light to the dark area B. Therefore, the light-emitting surface 103 or the bottom surface 104 corresponds to the dark area B. The microstructure is used to adjust the light-expanding angle of the light-emitting unit 112. Therefore, in order to prevent the positioning slot 102 from affecting the performance of the light taking microstructure, it is necessary to make the depth X 1 of the positioning slot 102 not exceed .
於本實施方式中，係使導光板10之高度為H，各發光單元112之高度為h，且H不大於3h，此一條件則進一步揭示該具定位結構之背光模組1可為導光板10高度與發光單元112高度比值在一定範圍內之背光模組，亦即導光板10高度與發光單元112高度相近的背光模組類型。如前述，現今導光板10漸趨輕薄化發展，意謂導光板10之高度相對降低，因此導光板10高度與發光單元112高度的比例越來越小，若組裝燈條11時，發光單元112的位置略有偏差而非位於入光面101中央，則發光單元112之部分光線即會超出入光面101而無法被有效導引至導光板10內部，進而影響導光板10光線利用效率與出光時的均勻度，因此對於運用薄型導光板之背光模組，燈條的定位更顯重要。 In this embodiment, the height of the light guide plate 10 is H, the height of each of the light emitting units 112 is h, and H is not more than 3 h. This condition further reveals that the backlight module 1 with the positioning structure can be a light guide plate. The backlight module of which the height ratio of the height of the light-emitting unit 112 is within a certain range, that is, the type of the backlight module in which the height of the light guide plate 10 is close to the height of the light-emitting unit 112. As described above, the light guide plate 10 is gradually becoming thinner and lighter, which means that the height of the light guide plate 10 is relatively lowered. Therefore, the ratio of the height of the light guide plate 10 to the height of the light emitting unit 112 is getting smaller and smaller. When the light bar 11 is assembled, the light emitting unit 112 is assembled. A slight deviation of the position is not located in the center of the light incident surface 101, and part of the light of the light emitting unit 112 will exceed the light incident surface 101 and cannot be effectively guided to the inside of the light guide plate 10, thereby affecting the light utilization efficiency and light output of the light guide plate 10. The uniformity of time, so the positioning of the light bar is more important for the backlight module using a thin light guide.
此外，當定位槽102深度為X1，定位柱111之長度為X2時，則X2>X1。藉此，在組裝燈條11與導光板10時可快速對位，且進一步使燈條11與導光板10組裝後形成一間距，利於確認燈條11是否確實位於入光面101中央，同時可藉由此一間距使導光板10與燈條11保持適當距離，避 免燈條11運作之熱能使導光板10產生變形。特別一提的是，當定位槽102屬微尺寸凹槽時，若設計定位槽102深度與定位柱111長度相仿，在組裝上則會遭遇無法快速精準對位的問題，故為更利於組裝製程進行，是以在設計定位柱111尺寸時，使其長度大於定位槽102深度較佳，且藉此可讓燈條11與導光板10形成間距，除利於檢驗燈條11位置外更可防止驅動熱能影響導光板10。 Further, when the depth of the positioning groove 102 is X 1 and the length of the positioning post 111 is X 2 , then X 2 >X 1 . Therefore, when the light bar 11 and the light guide plate 10 are assembled, the light bar 11 can be quickly aligned, and the light bar 11 and the light guide plate 10 are further assembled to form a spacing, which is convenient for confirming whether the light bar 11 is actually located at the center of the light incident surface 101, and at the same time By keeping the light guide plate 10 and the light bar 11 at an appropriate distance by this spacing, the heat of the operation of the light bar 11 can be prevented to deform the light guide plate 10. In particular, when the positioning groove 102 is a micro-sized groove, if the depth of the positioning groove 102 is designed to be similar to the length of the positioning post 111, the assembly may encounter a problem that the positioning cannot be performed quickly and accurately, so that the assembly process is more favorable. When the size of the positioning post 111 is designed, the length of the positioning post 111 is preferably greater than the depth of the positioning slot 102, and the light bar 11 and the light guide plate 10 can be spaced apart, thereby preventing the driving of the light bar 11 and preventing the driving. Thermal energy affects the light guide plate 10.
請繼續參閱第4、5A~5C及6圖，其係為本發明第二實施方式之方法步驟流程圖及各導光板加工示意圖與組裝示意圖。於本實施方式中係揭露一種具定位結構之背光模組之製造方法，包括以下步驟。 Please refer to FIGS. 4, 5A-5C and 6 for a flow chart of the method of the second embodiment of the present invention and a schematic diagram and assembly diagram of each light guide plate. In the embodiment, a method for manufacturing a backlight module with a positioning structure is disclosed, which includes the following steps.
首先，將複數導光板10堆疊成批並對齊，以使各導光板10之一入光面101構成一加工平面2(步驟S01)，如第5A圖所示。為符合加工效率，於本實施方式中對於導光板10係採複數同時加工方式進行。 First, the plurality of light guide plates 10 are stacked in a batch and aligned so that one light incident surface 101 of each of the light guide plates 10 constitutes a processing plane 2 (step S01), as shown in FIG. 5A. In order to meet the processing efficiency, in the present embodiment, the light guide plate 10 is subjected to a plurality of simultaneous processing methods.
而後，利用一加工機具(圖中未示)於該加工平面2刻劃複數條溝槽105，以分別形成展光微結構(步驟S02)，如第5B圖所示。位於各入光面101之溝槽105係做為提升入射光線展光角度之展光結構，其態樣可為弧形或矩形等，於此係以該些溝槽105為接續排列之弧形溝槽為例說明。其中，鑒於雷射加工技術之成熟度與便利性，故於本實施方式中該加工機具可為一雷射機台，以透過雷射於加工平面2形成溝槽105。 Then, a plurality of grooves 105 are scribed in the processing plane 2 by a processing tool (not shown) to form a light-expanding microstructure, respectively (step S02), as shown in FIG. 5B. The groove 105 located in each of the light-incident surfaces 101 is used as a light-expanding structure for enhancing the angle of light of the incident light, and the aspect thereof may be curved or rectangular, etc., wherein the grooves 105 are arranged in a continuous arc shape. The groove is taken as an example. In the present embodiment, the processing tool can be a laser machine to form a trench 105 through the laser to the processing plane 2 in view of the maturity and convenience of the laser processing technology.
接續，於各該入光面101加工形成至少一定位槽102，且定位槽102之高度低於入光面101(步驟S03)，而如第5C圖所示。在溝槽105成形後，透過加工機具以雷射加工方式進一步於各入光面101形成定位槽102，且為避免定位槽102過大而破壞入光面101展光效果以及維持入光面 101結構強度，故於此限定定位槽102於Z軸向長度小於入光面101於Z軸向長度。於定位槽102加工完畢後，各導光板10即可獨立進行後續組裝步驟。 Then, at least one positioning groove 102 is formed on each of the light incident surfaces 101, and the height of the positioning groove 102 is lower than the light incident surface 101 (step S03), as shown in FIG. 5C. After the groove 105 is formed, the positioning groove 102 is further formed on each of the light incident surfaces 101 by laser processing through the processing tool, and the light-incident effect of the light-incident surface 101 is prevented and the light-incident surface is maintained to prevent the positioning groove 102 from being excessively large. The structural strength of 101 is such that the length of the positioning groove 102 in the Z-axis direction is smaller than the length of the light-incident surface 101 in the Z-axis direction. After the positioning groove 102 is processed, each of the light guide plates 10 can independently perform the subsequent assembly steps.
提供一燈條11，其中燈條11對應定位槽102具有至少一定位柱111(步驟S04)。接著組設燈條11於入光面101，且定位柱111插設於定位槽102中，使燈條11位於入光面101中央(步驟S05)。導光板10加工完畢後即分別與燈條11進行組裝，透過定位槽102與定位柱111結構使組裝後燈條11位置可被固定於入光面101中央，以使光線充分入射至導光板10內，而如第6圖所示。 A light bar 11 is provided, wherein the light bar 11 has at least one positioning post 111 corresponding to the positioning groove 102 (step S04). Then, the light bar 11 is disposed on the light incident surface 101, and the positioning post 111 is inserted into the positioning groove 102 so that the light bar 11 is located at the center of the light incident surface 101 (step S05). After the light guide plate 10 is processed, it is assembled with the light bar 11 respectively. The position of the assembled light bar 11 can be fixed to the center of the light incident surface 101 through the positioning groove 102 and the positioning post 111 structure, so that the light is sufficiently incident on the light guide plate 10. Inside, as shown in Figure 6.
請再度參閱第1至3圖，本發明亦係揭示一種具定位結構之導光板10，用以供具有定位柱111之燈條11組設，其包括一入光面101及至少一定位槽102。入光面101用以接收燈條11所提供之光線，定位槽102位於入光面101且高度不大於入光面101高度，用以供定位柱111插設於定位槽102中，藉此定位槽102限定燈條11相對入光面101之設置高度，使燈條11對應位於入光面101中央。其細部特徵與第一實施方式相同部分於此不再贅述。 Referring to FIG. 1 to FIG. 3 again, the present invention also discloses a light guide plate 10 having a positioning structure for assembling a light bar 11 having a positioning post 111, which includes a light incident surface 101 and at least one positioning groove 102. . The light incident surface 101 is configured to receive the light provided by the light strip 11. The positioning groove 102 is located on the light incident surface 101 and has a height not greater than the height of the light incident surface 101. The positioning post 111 is inserted into the positioning slot 102 for positioning. The slot 102 defines the height of the light bar 11 relative to the light incident surface 101 such that the light bar 11 is located at the center of the light incident surface 101. The detailed features of the first embodiment are not described herein again.
此外，對於定位槽102之深度限制、導光板10高度與燈條11之發光單元112高度比例關係以及定位槽102深度與定位柱111長度關係同於第一實施方式所述，是以不再贅述。 In addition, the depth limitation of the positioning groove 102, the height relationship between the height of the light guide plate 10 and the light emitting unit 112 of the light bar 11, and the relationship between the depth of the positioning groove 102 and the length of the positioning post 111 are the same as those in the first embodiment, so that the description is omitted. .
綜上所述，本發明揭示具有定位結構之導光板、背光模組及其製造方法，透過導光板入光面的定位槽，搭配燈條之定位柱結構，使燈條與導光板組裝時可達快速精準對位之功效，確保燈條相對位於入光面中 央位置，以使導光板達到最佳之光線使用率。尤其在現今為符合背光模組所應用之電子裝置輕薄化要求，而使導光板趨向薄型化之技術發展下，當發光單元高度與導光板高度越來越接近時，燈條相對導光板設置位置的精準度需求即隨之提升，避免燈條安裝位置偏移造成光線無法盡數由入光面入射至導光板，降低光線利用率以及導光板之出光均勻度。此外，為配合導光板微結構之取光需求，因此對於定位槽之深度亦可進一步限定，進而提升導光板之導光效能，且為更快速地執行燈條與導光板組裝製程，亦可透過設定定位柱長度與定位槽深度的相對關係及形狀態樣，使組裝時定位柱可快速對位而插設於定位槽中，達到限定燈條位置功效。 In summary, the present invention discloses a light guide plate having a positioning structure, a backlight module, and a manufacturing method thereof. The positioning groove of the light-incident surface of the light guide plate is matched with the positioning column structure of the light bar, so that the light bar and the light guide plate can be assembled. The effect of fast and accurate alignment ensures that the light bar is relatively located in the light entrance surface Central position to achieve the best light usage rate of the light guide. Especially in the current development of the technology that meets the requirements of the thinning and thinning of the electronic device used in the backlight module, and the light guide plate tends to be thinner, when the height of the light-emitting unit is closer to the height of the light guide plate, the position of the light bar relative to the light guide plate is set. The accuracy requirement is increased accordingly, and the position of the light bar is prevented from being displaced, so that the light cannot be incident on the light guide plate from the light incident surface, thereby reducing the light utilization rate and the light uniformity of the light guide plate. In addition, in order to meet the light-receiving requirements of the micro-structure of the light guide plate, the depth of the positioning groove can be further limited, thereby improving the light-guiding performance of the light guide plate, and performing the assembly process of the light bar and the light guide plate more quickly. The relative relationship between the length of the positioning post and the depth of the positioning groove and the shape state are set, so that the positioning post can be quickly aligned during insertion and inserted into the positioning groove to achieve the function of limiting the position of the light bar.
以上所述者，僅為本發明之較佳實施例而已，並非用以限定本發明實施之範圍；故在不脫離本發明之精神與範圍下所作之均等變化與修飾，皆應涵蓋於本發明之專利範圍內。 The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention; therefore, equivalent changes and modifications may be made without departing from the spirit and scope of the invention. Within the scope of the patent.
1‧‧‧背光模組 1‧‧‧Backlight module
10‧‧‧導光板 10‧‧‧Light guide plate
101‧‧‧入光面 101‧‧‧Into the glossy surface
102‧‧‧定位槽 102‧‧‧ positioning slot
103‧‧‧出光面 103‧‧‧Glossy surface
104‧‧‧底面 104‧‧‧ bottom
11‧‧‧燈條 11‧‧‧Light strips
111‧‧‧定位柱 111‧‧‧Positioning column
112‧‧‧發光單元 112‧‧‧Lighting unit
Claims (10)
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| TW104140721A TWI584013B (en) | 2015-12-04 | 2015-12-04 | A light guide plate with a positioning structure, a backlight module and a manufacturing method thereof |
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| TW104140721A TWI584013B (en) | 2015-12-04 | 2015-12-04 | A light guide plate with a positioning structure, a backlight module and a manufacturing method thereof |
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| TWI584013B true TWI584013B (en) | 2017-05-21 |
| TW201721202A TW201721202A (en) | 2017-06-16 |
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Cited By (1)
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| TWI681224B (en) * | 2018-12-28 | 2020-01-01 | 奇美實業股份有限公司 | Light guide plate, lighting module and lighting device having the same, and method for manufacturing the light guide plate |
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| WO2019061027A1 (en) * | 2017-09-26 | 2019-04-04 | 瑞仪光电(苏州)有限公司 | Lighting device |
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| CN101373052A (en) * | 2007-08-23 | 2009-02-25 | 西铁城电子股份有限公司 | Planar light unit and display apparatus having the same |
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| CN101373052A (en) * | 2007-08-23 | 2009-02-25 | 西铁城电子股份有限公司 | Planar light unit and display apparatus having the same |
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| TWI681224B (en) * | 2018-12-28 | 2020-01-01 | 奇美實業股份有限公司 | Light guide plate, lighting module and lighting device having the same, and method for manufacturing the light guide plate |
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