200921245 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種液晶板，尤其涉及一種可自動除塵之液 晶板及其應用之投影機。 【先前技術】 投影顯示係近年來發展最快之行業之一，目前主要技術 有CRT (陰極射線管）技術，PDP (等離子體顯示）技術， 液晶（液晶顯不）技術，DLP (數位光處理）技術，LCOS (單晶矽反射式液晶顯示）技術等。但隨著液晶大規模生產 技術逐漸成熟，尤其係近年來小型高精度液晶大規模生產技 術逐漸成热’使液晶技術已逐漸成為市場之主流產品技術5 尤其係在投影市場，其體積小，單價低，攜帶方便易於安裝 特性係其他技術無法比擬。 液晶投影機一般包括一殼體和設置於殼體内之液晶 板、合光棱鏡、電路板、光源和相應之散熱機構。在設計上 一般係先將一光源所產生之白光分離出紅、綠、藍三色光， 分別藉由三液晶板之液晶片對三色光進行調製，合光棱鏡對 調製後之三色光進行光整合，經投影鏡頭投射到螢幕上。 惟，空氣中之灰塵會藉由散熱機構之通風道進入至液晶 投影機殼内並粘附於液晶板之液晶片表面。如此，將會影響 光學元件之光學性能，造成在投影時，晝面會出現污點。 【發明内容】 有鑒於此，有必要提供一種可自動除塵之液晶板及其應 用之投影機。 200921245 種液晶板’所述液晶板包括一液晶片及一收谷框。所 述液晶片包括第一表面及與第一表面相對之第二表面。所述 收容框包括一收容空間及一框體部。所述液晶片收容於所述 收容框之收容空間内。在所述液晶片之第一表面侧及第二表 面側其中至少一表面側設置一自動除塵裝置。所述自動除塵 裝置固設於所述收容框之框體部上。所述自動除塵裝置包括 一固持件、至少一震動件及一光學鏡片。所述至少一震動件 與光學鏡片設置於所述固持件上。 一種投影機，其包括一光源模組、一光線極化均勻模 組、一分光鏡片組、一全反射鏡組、一液晶板組、一合光棱 鏡及一投影鏡頭。所述光源模組用於發射光束至所述光線極 化均勻模組，經過所述光線極化均勻模組之光束經過分光鏡 片組與全反射鏡組後投影到液晶板組上。該液晶板組包括二 液晶板’所述母液晶板包括一液晶片及一收容框。所述液晶 片包括接收光源模組照射之光束之第一表面及與第一表面相 對之第二表面。所述收容框包括一收容空間及一框體部。所 述液晶片收容於所述收容框之收容空間内。所述合光棱鏡用 於對所述調製後之光束進行光合成。所述投影鏡頭用於投射 影像。每液晶片之第一表面侧及第二表面側其中至少一表面 側設有自動除塵裝置。所述自動除塵裝置固設於所述收容框 之框體部上。所述自動除塵裝置包括一固持件、至少一震動 件及一光學鏡片。所述至少一震動件與光學鏡片設置於所述 固持件上。 相對於先前技術，所述投影機設有自動除塵裝置，該自 200921245 動除塵裝置中之震動件可在投影機之投影鏡頭投影前工作， 振動抖落吸附於自動除塵裝置中之用於保護液晶片之光學鏡 . 片上之空氣灰塵。如此，可避免投影機投影時出現污點問題。 【實施方式】 以下將結合附圖對本發明作進一步之詳細說明。 5青參閱圖1 ’為本發明實施例之投影機1 〇〇，其包括一 光源模組20、一光線極化均勻模組、一分光鏡片組ι2、 液曰a板組17、 全反射鏡組13、合光棱鏡18及投影鏡頭 19 ° 所述光源模組20用於發射光束。 所述光線極化均勻模組11與所述光源模組20正對設 置’該光線極化均勻模組11用於接收光源模組20發射之光 束’並將光源模組20之光束極化（p〇iarized)成P光或$ 光並將該極化後之光線均勻化。 所述分光鏡片組12包括第一分光鏡片121及第二分光 鏡片122。所述第一分光鏡片121接收極化後之光束，並讓 極化後之紅色光穿過，其餘顏色之光束反射。 所述液晶板組17包括一第一液晶板171、一第二夜晶才反 172及一第三液晶板173。 所述全反射鏡組13包括一第一全反射鏡131、一第二八 反射鏡132及一第三全反射鏡133。所述第一全反射鏡 用於將穿過第一分光鏡片121之紅色光射至所述第一液晶才反 171 ° 所述第二分光鏡片122將第一分光鏡片121所反射之光 200921245 線中之綠色光反射至第二液晶板172，並讓藍色光穿過。 所述第二與第三全反射鏡132、133，將穿透過第二分光 鏡片122之藍色光反射至第三液晶板173。 所述合光棱鏡18包括三入射面及一出射面。所述三入 射面分別與第一、第二及第三液晶板171、172、173正對設 置且與分別與各液晶板之間間隔一定距離。該合光棱鏡18 之三入射面用於將穿過第一、第二及第三液晶板171、172、 173之紅光、綠光及藍光混合成一光束。所述出射面用於將 該混合成之光束投射至投影鏡頭19。 所述投影鏡頭19用於將合光棱鏡18所射出之光束投射 影像至投影螢幕上（圖未示）。 請一併參閱圖2與圖3’所述液晶片板組17之各液晶板 上還分別設有至少一自動除塵裝置16,該自動除塵裝置16 可在投影機之投影鏡頭投影前工作。 由於第一液晶板171、第二液晶板172及第三液晶板173 之結構一樣，因此，以下只以第一液晶板171之結構為例。 所述第一液晶板171包括一液晶片178及一收容框 179。本實施例中，所述液晶片178為一方形結構，該液晶片 178包括一接收光束之第一表面1781及與所述合光棱鏡18 之一入射面正對之第二表面（圖未示），所述第一表面1781 與第二表面相對設置。由於所述第一液晶板171之第二表面 侧之結構與第一表面1781侧之結構一致，以下只以第一表面 1781侧之結構為例。所述收容框179對應為中空之方形結 構，包括一收容空間1791及一框體部1792。所述液晶片178 10 200921245 收容於所述收容空間1791内。該框體部1792之四角位置分 別設有一第一螺孔1793。所述框體部1792其中二相對之側 、 邊上亦分別設有二第二螺孔1798。 ^ 所述第一液晶板171之第一表面1781側設有一自動除 塵裝置16。該自動除塵裝置16用於防止空氣灰塵粘著於所 述第一液晶板171上。所述第二表面侧設有與第—表面口幻 側同樣之自動除塵裝置。實際應用中，所述自動除塵裴置Μ 亦可設置於第一表面1781或第二表面之任意一表面侧，並不 限於本實施例。 本實施例中，所述自動除塵裝置16包括一固持件ΐ6ι、 一膠體層162、至少一震動件163、一光學鏡片164、—壓持 件165及複數螺栓166。 ' 所述固持件161對應於所述收容框179為一方形結構， 包括一凹槽1614及環繞所述凹槽1614之邊框1611。本實施 例中，所述收容框179設有四邊框1611，該四邊框1611中 有任思一相對之邊框1611之端部沿各自延伸方向分別延伸 有二凸塊1612，所述四凸塊ι612分別對應所述液晶板之框 體部1792之螺孔1793位置分別開設有一第一連接孔ι613。 所述框體部1792之螺孔1793與所述第一連接孔1613配合並 利用所述四螺检166將所述固持件161與所述液晶板171固 設在一起。所述四邊框1611其中二相對之邊框1611對應液 晶板之框體部1792之其中二相對之側邊上之二螺孔1793上 分別設有二第二連接孔1618。所述四邊框1611其中任意之 二相對之邊框1611上沿垂直所述邊框1611位置分別凸設有 11 200921245 一中空之凸耳1615。形成有凸塊1612之邊框1611上形成有 一凸耳1615。實際應用中，所述固持件161亦可為二或二以 上獨立之邊框1611，該至少二獨立之邊框1611分別設置於 收容框179之框體部1792上，所述凸耳1615之數量可以為 一亦可為二以上，其可設置於任意一條邊框1611上，並不限 於本實施例。所述凸耳1615上設置有一容孔1617。所述凹 槽1614具有一凹面1616。所述凹槽1614之尺寸與所述液晶 片178之尺寸相當。 本實施例中’所述震動件163對應所述凸耳1615之數 量為二，其分別設置於固持件161之凸耳1615之容孔1617 内。該震動件163為振動馬達、壓電馬達或壓電轉換器中之 一種。優選地，該震動件163為壓電轉換器。 所述膠體層162為雙面膠、矽朦中之一種。該膠體層162 設置於所述固持件161之凹槽1614之凹面1616上。 所述光學鏡片164為一透明玻璃，優選地，該光學鏡片 為BK7光學玻璃做成。該光學鏡片164藉由所述膠體層162 固設於凹槽1614之凹面1616上。 本實施例中，所述壓持件165包括二壓合片1651。該二 壓合片1651對應所述固持件161上之第二連接孔1618設有 第三連接孔1652。所述壓持件165之第三連接孔1652與所 述固持件161上之第一連接孔1613配合並藉由所述螺栓166 將所述固持件161與所述壓持件165固持在一起。同時，所 述壓合片1651壓合於所述光學鏡片164之邊緣位置。實際應 用中，所述壓合片1651之數量亦可為一或二以上，其分別壓 12 200921245 合於所述光學鏡片164之邊緣位置。 實際應用中，所述固持件161與所述收容框179之間亦 可以藉由膠合或捆綁之方式固設在一起；所述震動件163亦 可以藉由膠合或捆綁之方式固設在所述固持件161之邊框 1611上，所述震動件163之數量亦可只為一或二以上；所述 自動除塵裝置16亦可不設有壓持件165,並不限於本實施例。 所述投影機設有自動除塵裝置，該自動除塵裝置中之震 動件可在投影機之投影鏡頭投影前工作，振動抖落吸附於自 動除塵裝置中之用於保護液晶片之光學鏡片上之空氣灰塵。 如此，可避免投影機投影時出現污點問題。 綜上所述，本發明符合發明專利要件，爰依法提出專利 申請。惟，以上所述者僅為本發明之較佳實施方式，本發明 之範圍並不以上述實施方式為限，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】 圖1係本發明實施例之投影機示意圖； 圖2係本發明實施例之投影機之自動除塵裝置之分解 圖， 圖3係本發明實施例之投影機之自動除塵裝置之立體 圖。 【主要元件符號說明】 投影機 100 全反射鏡組 13 第一全反射鏡 131 第二全反射鏡 132 13 200921245 第三全反射鏡 133 分光鏡片組 12 第一分光鏡片 121 第二分光鏡片 122 光線極化均勻模組 11 液晶板組 17 弟·一液晶板 172 第三液晶板 173 合光棱鏡 18 投影鏡頭 19 弟' 液晶板 171 自動除塵裝置 16 固持件 161 膠體層 162 震動件 163 光學鏡片 164 壓持件 165 螺栓 166 收容框 179 液晶片 178 邊框 1611 凸塊 1612 第一連接孔 1613 凹槽 1614 凸耳 1615 凹面 1616 容孔 1617 第二連接孔 1618 第一表面 1781 收容空間 1791 第一螺孔 1793 框體部 1792 第二螺孔 1798 壓合片 1651 第三連接孔 1652 14BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal panel, and more particularly to a liquid crystal panel capable of automatically removing dust and a projector for use thereof. [Prior Art] Projection display is one of the fastest growing industries in recent years. At present, the main technologies are CRT (Cathode Ray Tube) technology, PDP (Plasma Display) technology, Liquid Crystal (Liquid Crystal Display) technology, DLP (Digital Light Processing). Technology, LCOS (single crystal 矽 reflective liquid crystal display) technology. However, with the maturity of large-scale production technology of liquid crystals, especially in recent years, small-scale high-precision liquid crystal mass production technology has gradually become hot. 'The liquid crystal technology has gradually become the mainstream product technology in the market. 5 Especially in the projection market, its small size, unit price. Low, easy to carry and easy to install features are unmatched by other technologies. The liquid crystal projector generally comprises a casing and a liquid crystal panel, a light combining prism, a circuit board, a light source and a corresponding heat dissipating mechanism disposed in the casing. In design, the white light generated by a light source is generally separated into three colors of red, green and blue, respectively, and the three color lights are modulated by the liquid crystal sheets of the three liquid crystal panels, and the light combining prisms optically integrate the modulated three color lights. Projected onto the screen via the projection lens. However, dust in the air enters the liquid crystal projector casing through the air passage of the heat dissipation mechanism and adheres to the surface of the liquid crystal panel of the liquid crystal panel. In this way, the optical properties of the optical component will be affected, causing stains on the face during projection. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a liquid crystal panel capable of automatically removing dust and a projector therefor. 200921245 Liquid crystal panel The liquid crystal panel includes a liquid crystal panel and a grain receiving frame. The liquid crystal cell includes a first surface and a second surface opposite the first surface. The receiving frame includes a receiving space and a frame portion. The liquid crystal panel is received in a receiving space of the receiving frame. An automatic dust removing device is disposed on at least one of the first surface side and the second surface side of the liquid crystal panel. The automatic dust removing device is fixed to the frame portion of the receiving frame. The automatic dust removing device comprises a holding member, at least one vibrating member and an optical lens. The at least one vibrating member and the optical lens are disposed on the holding member. A projector comprising a light source module, a light polarization uniform mode group, a beam splitting lens group, a total reflection mirror group, a liquid crystal panel group, a light combining prism and a projection lens. The light source module is configured to emit a light beam to the light polarization uniformizing module, and the light beam of the light polarization uniform module passes through the beam splitting mirror group and the total reflection mirror group and is projected onto the liquid crystal panel group. The liquid crystal panel includes two liquid crystal panels. The mother liquid crystal panel includes a liquid crystal panel and a receiving frame. The liquid crystal panel includes a first surface that receives the light beam illuminated by the light source module and a second surface that is opposite to the first surface. The receiving frame includes a receiving space and a frame portion. The liquid crystal panel is housed in a housing space of the housing frame. The light combining prism is configured to photo combine the modulated light beam. The projection lens is used to project an image. An automatic dust removing device is disposed on at least one of the first surface side and the second surface side of each of the liquid crystal panels. The automatic dust removing device is fixed to the frame portion of the receiving frame. The automatic dust removing device comprises a holding member, at least one vibration member and an optical lens. The at least one vibrating member and the optical lens are disposed on the holding member. Compared with the prior art, the projector is provided with an automatic dust removing device, and the vibration component in the dust removing device of 200921245 can work before the projection lens of the projector is projected, and the vibration shake-off is absorbed in the automatic dust removing device for protecting the liquid crystal. Optical mirror of the film. Air dust on the film. In this way, it is possible to avoid staining problems when the projector is projected. [Embodiment] Hereinafter, the present invention will be further described in detail with reference to the accompanying drawings. 5 is a projector 1 according to an embodiment of the present invention, which includes a light source module 20, a light polarization uniform module, a beam splitting lens group ι2, a liquid helium a plate group 17, and a total reflection mirror. Group 13, light combining prism 18 and projection lens 19 ° The light source module 20 is used to emit a light beam. The light polarization uniform module 11 and the light source module 20 are disposed opposite to each other. The light polarization uniform module 11 is configured to receive the light beam emitted by the light source module 20 and polarize the light beam of the light source module 20 ( P〇iarized) into P light or $ light and homogenize the polarized light. The spectroscopic lens group 12 includes a first beam splitting lens 121 and a second beam splitting lens 122. The first beam splitting lens 121 receives the polarized beam and allows the polarized red light to pass through, and the remaining color beams are reflected. The liquid crystal panel 17 includes a first liquid crystal panel 171, a second crystal 172, and a third liquid crystal panel 173. The total reflection mirror group 13 includes a first total reflection mirror 131, a second eight-reflection mirror 132, and a third total reflection mirror 133. The first total reflection mirror is configured to inject red light passing through the first beam splitting lens 121 to the first liquid crystal to be inverted 171 °. The second beam splitting lens 122 reflects the light reflected by the first beam splitting lens 121. The green light is reflected to the second liquid crystal panel 172, and the blue light is passed through. The second and third total reflection mirrors 132, 133 reflect the blue light that has passed through the second beam splitter lens 122 to the third liquid crystal panel 173. The light combining prism 18 includes three incident surfaces and an outgoing surface. The three incident surfaces are disposed opposite to the first, second, and third liquid crystal panels 171, 172, and 173, respectively, and spaced apart from each of the liquid crystal panels by a certain distance. The three incident faces of the light combining prism 18 are used to mix red, green and blue light passing through the first, second and third liquid crystal panels 171, 172, 173 into a light beam. The exit face is for projecting the mixed beam into the projection lens 19. The projection lens 19 is used to project a light beam emitted from the light combining prism 18 onto a projection screen (not shown). Further, at least one automatic dust removing device 16 is disposed on each of the liquid crystal panels of the liquid crystal panel group 17 of FIG. 2 and FIG. 3', and the automatic dust removing device 16 can be operated before the projection lens projection of the projector. Since the structures of the first liquid crystal panel 171, the second liquid crystal panel 172, and the third liquid crystal panel 173 are the same, only the structure of the first liquid crystal panel 171 will be exemplified below. The first liquid crystal panel 171 includes a liquid crystal panel 178 and a receiving frame 179. In this embodiment, the liquid crystal panel 178 has a square structure, and the liquid crystal panel 178 includes a first surface 1781 that receives the light beam and a second surface that faces the incident surface of the light combining prism 18 (not shown). The first surface 1781 is disposed opposite to the second surface. Since the structure of the second surface side of the first liquid crystal panel 171 coincides with the structure of the side of the first surface 1781, only the structure of the side of the first surface 1781 will be exemplified below. The receiving frame 179 corresponds to a hollow square structure, and includes a receiving space 1791 and a frame portion 1792. The liquid crystal panel 178 10 200921245 is housed in the accommodating space 1791. A first screw hole 1793 is defined in each of the four corner positions of the frame portion 1792. Two second screw holes 1798 are respectively disposed on the opposite sides and sides of the frame portion 1792. ^ An automatic dust removing device 16 is disposed on the first surface 1781 of the first liquid crystal panel 171. The automatic dust removing device 16 is for preventing air dust from adhering to the first liquid crystal panel 171. The second surface side is provided with an automatic dust removing device similar to the magic side of the first surface opening. In an actual application, the automatic dust removing device 亦可 can also be disposed on any one of the first surface 1781 or the second surface, and is not limited to the embodiment. In this embodiment, the automatic dust removing device 16 includes a holding member ΐ6, a colloid layer 162, at least one vibrating member 163, an optical lens 164, a pressing member 165, and a plurality of bolts 166. The holder 161 has a square structure corresponding to the receiving frame 179 and includes a groove 1614 and a frame 1611 surrounding the groove 1614. In this embodiment, the receiving frame 179 is provided with four bezels 1611. The four ends of the frame 1611 have a plurality of bumps 1612 extending along the extending direction of the frame 1611. The four bumps 612 are respectively extended. A first connection hole ι 613 is defined in each of the positions of the screw holes 1793 of the frame portion 1792 of the liquid crystal panel. The screw hole 1793 of the frame portion 1792 is engaged with the first connecting hole 1613 and the holding member 161 and the liquid crystal panel 171 are fixed together by the four screws 166. Two of the two frame 1611 are respectively provided with two second connecting holes 1618 on the two opposite screw holes 1793 of the opposite side edges of the frame portion 1792 of the liquid crystal plate. The four frames 1611 are respectively provided with a hollow lug 1615 protruding from the frame 1611 at a position perpendicular to the frame 1611. A lug 1615 is formed on the bezel 1611 on which the bump 1612 is formed. In an actual application, the holding member 161 may be two or more independent frames 1611. The at least two independent frames 1611 are respectively disposed on the frame portion 1792 of the receiving frame 179. The number of the lugs 1615 may be One may be two or more, and it may be disposed on any one of the frames 1611, and is not limited to the embodiment. A hole 1617 is defined in the lug 1615. The recess 1614 has a concave surface 1616. The size of the recess 1614 is comparable to the size of the liquid crystal panel 178. In the present embodiment, the number of the vibrating members 163 corresponding to the lugs 1615 is two, which are respectively disposed in the through holes 1617 of the lugs 1615 of the holding member 161. The vibrating member 163 is one of a vibration motor, a piezoelectric motor, or a piezoelectric transducer. Preferably, the vibrating member 163 is a piezoelectric transducer. The colloid layer 162 is one of a double-sided tape and a crucible. The colloid layer 162 is disposed on the concave surface 1616 of the recess 1614 of the holding member 161. The optical lens 164 is a transparent glass. Preferably, the optical lens is made of BK7 optical glass. The optical lens 164 is fixed to the concave surface 1616 of the recess 1614 by the colloid layer 162. In this embodiment, the pressing member 165 includes two pressing pieces 1651. The second pressing piece 1651 is provided with a third connecting hole 1652 corresponding to the second connecting hole 1618 of the holding member 161. The third connecting hole 1652 of the holding member 165 is engaged with the first connecting hole 1613 of the holding member 161 and the holding member 161 and the holding member 165 are held together by the bolt 166. At the same time, the pressing piece 1651 is pressed against the edge position of the optical lens 164. In practical applications, the number of the pressing pieces 1651 may also be one or two, which are respectively pressed to the edge position of the optical lens 164 by 12 200921245. In an actual application, the holding member 161 and the receiving frame 179 may be fixed together by gluing or bundling; the vibrating member 163 may also be fixed by being glued or bundled. The number of the vibrating members 163 may be only one or two on the frame 1611 of the holding member 161. The automatic dust removing device 16 may not be provided with the pressing member 165, and is not limited to the embodiment. The projector is provided with an automatic dust removing device, and the vibration component in the automatic dust removing device can work before the projection lens of the projector is projected, and the vibration is shaken and absorbed to absorb the air on the optical lens for protecting the liquid crystal film in the automatic dust removing device. dust. In this way, it is possible to avoid staining problems when the projector is projected. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a projector according to an embodiment of the present invention; FIG. 2 is an exploded view of an automatic dust removing device of a projector according to an embodiment of the present invention, and FIG. 3 is an automatic dust removing device for a projector according to an embodiment of the present invention; Stereo view. [Description of main component symbols] Projector 100 total reflection mirror group 13 First total reflection mirror 131 Second total reflection mirror 132 13 200921245 Third total reflection mirror 133 Spectroscopic lens group 12 First beam splitting lens 121 Second beam splitting lens 122 Light pole Uniform module 11 Liquid crystal panel 17 Younger LCD panel 172 Third LCD panel 173 Light-collecting prism 18 Projection lens 19 Brother's LCD panel 171 Automatic dust collector 16 Holder 161 Colloid layer 162 Vibrating member 163 Optical lens 164 Pressing 165 bolt 166 receiving frame 179 liquid crystal 178 frame 1611 bump 1612 first connecting hole 1613 groove 1614 lug 1615 concave 1616 hole 1617 second connecting hole 1618 first surface 1781 receiving space 1791 first screw hole 1793 frame Part 1792 Second screw hole 1798 Pressing piece 1651 Third connecting hole 1652 14