200916935 九、發明說明： 【發明所屬之技術領域】 本發明涉及投影領域，特別涉及一種透射型液晶面板 及使用該液晶面板在螢幕上投射彩色圖像之投影機。 【先前技術】 習知投影機主要為穿透式和反射式兩種。穿透式投影 機之基本原理為藉由分色鏡將光源發出之光分離為紅、綠 和&二色光，二色光分別入射至對應之三個液晶面板 (Liquid Crystal Panel)，並藉由加在液晶面板上之視頻 訊號來控制液晶分子之旋轉，從而在螢幕上形成人眼可以 感知之彩色圖像。 對於穿透式LCD投影機，其中之液晶面板包括可以透 光之液晶分子層和控制液晶分子旋轉之薄膜電晶體 (TFT，Thin Film Transistor)。因為薄膜電晶體為半導體 為件，典型採用非晶材料製成，該種非晶材料對光電效應 比較敏感。為了避免光線直接照射薄膜電晶體和提高R、 G、B顏色對比值，需在液晶顯示元件之入射面上構建與 液晶顯示元件中之晝素對應之黑色矩陣（Black Matrix)。 惟’這樣會使得部分光束被黑色矩陣所遮擋，導致開口率 (Aperture Ratio)較低。開口率係指在單元晝素内，實際 可透光區之面積與單元晝素總面積之比率，開口率越高， 光線之透過率也越高。 為了提高面板之開口率，習知技術進一步地在黑色矩 陣如增加個微透鏡陣列（MLA ’ Micro Lens Array )。微 200916935 透鏡陣列對入射光有會聚作用，使得 擋之光線可以通過透光之液晶分子層，從矩陣遮 口率。 而提呵面板之開 惟，由於微透鏡陣列之會聚作用’從 (Projectlon Lens)ef；；^^； 入射光線，引起較大之像差，進 又 【發明内容】 析度降低。 面板有寥於此’有必要提供一種出射光線角度可調之液晶 之投還有必要提供一種使投影畫面具有較佳解析度 板’包括微透鏡㈣和液 =車列位於液晶顯示元件之入射面一侧，微 ^微透鏡。液晶面板之出射面一側具有可調透鏡陣列 調節單元，可調透鏡陣列包括複數可調透鏡，透鏡 调即早兀用於調節可調透鏡之焦距。 一種投影機，該投影機包括光源、液晶面板以及投事 鏡碩，液晶面板包括微透鏡陣列和液晶顯示元件。光源發 出之光束經微透鏡陣列會聚後通過液晶顯示元件，液晶顧 不凡件根據視頻城調獻射光束，投f彡鏡頭將從液晶頻 不凡件出射之光線投射到螢幕上。投影機還包括可調透鏡 陣列和透鏡調節單元，可調透鏡陣列位於液晶顯示元件之 出射面一側，透鏡調節單元用來調節可調透鏡之焦距，以 改變入射到投影鏡頭之光線之發散角。 200916935 上述液晶面板，可藉由透 。^ 焦距’從而調節液晶面板之出射光二改一可調透鏡之 藉由透鏡調節單元來改變可 之^ °上述投影機， 到技影鏡頭上之光線之發散 =射 螢幕上之晝面具有較佳解析度。m讀頭投射到 【實施方式】 =二斤示為較佳實施方式中液晶面板MO之部分社 構不思圖’輸曰面板31〇包括微透鏡陣列 ： 元件⑷可調透鏡陣们3和透鏡調 ^= 列12位於液晶顯示元件16 微透鏡陣 包括满數;μ 射 側，微透鏡陣列12 透鏡120與液晶顯示元件Μ中之 =一 Γ;可調透鏡陣列13位於液晶顯示元件16之 出射面-側，可·鏡陣列13包括複數可調透鏡13〇,可 调透鏡130與微透鏡陣列12中之微透鏡12〇 一一對應。 透^^施=中，可調透鏡陣列13為液態透鏡陣列。 透鏡調即早7G 15和液態透鏡陣列13電性連接。 透鏡陣列12之會聚制，光線在出射液晶顯示 向外發散，形成較大角度01。可藉由透鏡調 即早兀15輸出之電位大小來調節液態透鏡13〇之焦距，使 原本角度過大之出射光束聚焦，形成較小角度θ2 (Θ2〈Θ1) ’如此可調節液晶面板31〇之出射光線角度。 /如$ 2所示為第一較佳實施方式中投影機100之光學 系統不意圖’該投影機1〇〇包括照明光學系統1〇、色分離 光學系統2〇、光調制系統30、中繼光學系統（Relay 0ptical 200916935BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of projection, and more particularly to a transmissive liquid crystal panel and a projector for projecting a color image on a screen using the liquid crystal panel. [Prior Art] Conventional projectors are mainly of the transmissive type and the reflective type. The basic principle of the transmissive projector is that the light emitted by the light source is separated into red, green and light colors by the dichroic mirror, and the two colors of light are respectively incident on the corresponding three liquid crystal panels (Liquid Crystal Panel), and by The video signal applied to the liquid crystal panel controls the rotation of the liquid crystal molecules to form a color image that can be perceived by the human eye on the screen. For a transmissive LCD projector, the liquid crystal panel includes a liquid crystal molecular layer that can transmit light and a thin film transistor (TFT) that controls the rotation of the liquid crystal molecules. Since the thin film transistor is a semiconductor, it is typically made of an amorphous material, which is relatively sensitive to photoelectric effects. In order to prevent the light from directly illuminating the thin film transistor and to increase the R, G, and B color contrast values, a black matrix corresponding to the element in the liquid crystal display element is formed on the incident surface of the liquid crystal display element. However, this will cause some of the light beams to be blocked by the black matrix, resulting in a lower aperture ratio (Aperture Ratio). The aperture ratio is the ratio of the area of the actual light-transmissive area to the total area of the elemental halogen in the elemental element. The higher the aperture ratio, the higher the transmittance of light. In order to increase the aperture ratio of the panel, the prior art further increases the number of microlens arrays (MLA' Micro Lens Array) in the black matrix. Micro 200916935 The lens array has a convergence effect on the incident light, so that the light of the block can pass through the layer of liquid crystal molecules that are transmitted through the matrix. However, the opening of the panel is only due to the convergence of the microlens array 'Projectlon Lens ef;;^^; incident light, causing a large aberration, and the content of the invention is reduced. There is a need for a panel to provide a liquid crystal with an adjustable angle of light. It is also necessary to provide a preferred resolution for the projection screen. The microlens (4) and the liquid=carriage are located on the incident surface of the liquid crystal display element. One side, micro microlens. The exit surface side of the liquid crystal panel has an adjustable lens array adjustment unit, and the adjustable lens array includes a plurality of adjustable lenses, and the lens adjustment is used to adjust the focal length of the adjustable lens. A projector comprising a light source, a liquid crystal panel, and a projection mirror, the liquid crystal panel comprising a microlens array and a liquid crystal display element. The light beam emitted by the light source is condensed by the microlens array and then passed through the liquid crystal display element. The liquid crystal unit emits a light beam according to the video city, and the light emitted from the liquid crystal frequency is projected onto the screen. The projector further includes an adjustable lens array and a lens adjustment unit. The adjustable lens array is located on one side of the exit surface of the liquid crystal display element, and the lens adjustment unit is used to adjust the focal length of the adjustable lens to change the divergence angle of the light incident on the projection lens. . 200916935 The above LCD panel can be transparent. ^ Focal length' thus adjusts the exiting light of the liquid crystal panel. The adjustable lens is changed by the lens adjusting unit. The above projector, the divergence of the light onto the technical lens = the surface of the screen is more Good resolution. m read head projection to [embodiment] = two pounds is shown as a preferred embodiment of the liquid crystal panel MO part of the structure does not think 'transmission panel 31 〇 including microlens array: component (4) adjustable lens array 3 and lens调^= Column 12 is located in the liquid crystal display element 16 The microlens array includes a full number; the μ side, the microlens array 12 lens 120 and the liquid crystal display element = = Γ; the adjustable lens array 13 is located at the liquid crystal display element 16 The face-to-side mirror array 13 includes a plurality of adjustable lenses 13A, and the adjustable lenses 130 are in one-to-one correspondence with the microlenses 12 in the microlens array 12. In the transparent mode, the tunable lens array 13 is a liquid lens array. The lens adjustment is 7G 15 and the liquid lens array 13 is electrically connected. The convergence of the lens array 12 causes the light to diverge outwardly on the exiting liquid crystal to form a large angle 01. The focal length of the liquid lens 13〇 can be adjusted by the lens to adjust the potential of the output of the liquid lens 13 to focus the outgoing beam with an excessively large angle to form a smaller angle θ2 (Θ2<Θ1). Thus, the liquid crystal panel 31 can be adjusted. The angle of the exit light. The optical system of the projector 100 in the first preferred embodiment is not intended to include the illumination optical system 1 , the color separation optical system 2 , the optical modulation system 30 , and the relay as shown in FIG. Optical system (Relay 0ptical 200916935
System ) 40和投影鏡頭24。照明光學系統10包括光源11、 透鏡陣列104、108、反射鏡1〇6和偏振轉換器105。色分 離光學系統20包括分色鏡202、204。光調制系統30包括 液晶面板35R、35G、35B和合光棱鏡308。中繼光學系統 40包括反射鏡404、206、408、延遲透鏡402和中繼透鏡 406。其中，投影機100中使用之液晶面板35R、35G、35B 分別包括微透鏡陣列302R、302G、302B、液晶顯示元件 300R、300G、300B、可調透鏡陣列 304R、304G、304B。 光源11可為高壓_素燈或者高壓汞燈，其包括燈絲 112和反射燈罩114。反射燈罩114可以為拋物形狀，用於 將燈絲112發出之光線轉換成近似平行光線，該平行出射 光線沿光束傳播路径上具有近似圓形之截面。 透鏡陣列104和108具有若干微透鏡，並具有與液晶 面板35R、35G、35B中之長方形液晶顯示元件基本相同之 尺寸。透鏡陣列1〇4和1〇8使上述從光源n出射之圓形截 面之光束大致均勻地出射。 偏振轉換益105用於改變從透鏡陣列1〇4和1〇8出射 光線之偏振狀悲、Μ吏出射光線僅有一種偏振態，例如將S 光轉換成Ρ光’從而使偏振轉換器1G5出射之光線為ρ光。 分色鏡202和204將從偏振轉換器1〇5出射之光束分 離為紅（R)、綠（G)和藍（β)三色光，同時分色鏡2〇2 反射紅光到反射鏡206上，反射鏡2〇6進一步將紅光反射 到調制紅色光之液晶面板3511上，分色鏡辦反射綠光到 調制綠色光之液晶面板35G上。藍光經過延遲透鏡4〇2到 200916935 達反射鏡404 ’反射鏡404將藍光反射到中繼透鏡406上， . 反射鏡408進一步將通過中繼透鏡406之藍光反射到調制 • 藍色光之液晶面板35B上。延遲透鏡402和中繼透鏡406 之作用係使紅光、綠光和藍光之光路長度相等，保證紅光、 綠光和藍光同時入射到液晶面板35R、35G、35B上。紅、 綠、藍三色光經微透鏡陣列302R、302G、302B會聚，分 別通過液晶顯示元件300R、300G、300B，可以提高光利 用率。視頻訊號源經過A/D轉換、調製成電驅動訊號，加 到液晶面板35R、35G、35B上，藉由控制液晶分子之旋轉， 控制R、G、B三色光之通過率，以形成攜帶圖像訊息之三 色光。攜帶圖像訊息之三色光在合光棱鏡308中合成後經 投影鏡頭24投射到螢幕27上形成彩色圖像。 微透鏡陣列302R、302G、302B分別位於液晶顯示元 件300R、300G、300B之入光面一側，微透鏡陣列302R、 302G、302B分別包括複數微透鏡23R、23G、23B。在液 I ;晶顯示元件300R、300G、300B之出射面一側，分別具有 可調透鏡陣列304R、304G、304B。可調透鏡陣列304R、 304G、304B分別包括複數可調透鏡25R、25G、25B，可 調透鏡25R、25G、25B分別與微透鏡23R、23G、23B — 一對應。藉由調節可調透鏡25R、25G、25B之焦距，即可 改變自液晶面板35R、35G、35B出射光線之角度，從而改 變入射到投影鏡頭24之光線之角度，提高投影晝面之解析 度。System 40 and projection lens 24. The illumination optical system 10 includes a light source 11, lens arrays 104, 108, mirrors 〇6, and a polarization converter 105. The color separation optical system 20 includes dichroic mirrors 202, 204. The light modulation system 30 includes liquid crystal panels 35R, 35G, 35B and a light combining prism 308. The relay optical system 40 includes mirrors 404, 206, 408, a retardation lens 402, and a relay lens 406. Among them, the liquid crystal panels 35R, 35G, and 35B used in the projector 100 include microlens arrays 302R, 302G, and 302B, liquid crystal display elements 300R, 300G, and 300B, and tunable lens arrays 304R, 304G, and 304B, respectively. The light source 11 can be a high pressure or a high pressure mercury lamp including a filament 112 and a reflector cover 114. The reflector cover 114 can be parabolic in shape for converting the light from the filament 112 into approximately parallel rays having an approximately circular cross-section along the beam propagation path. The lens arrays 104 and 108 have a plurality of microlenses and have substantially the same size as the rectangular liquid crystal display elements of the liquid crystal panels 35R, 35G, 35B. The lens arrays 1〇4 and 1〇8 cause the above-described light beam of the circular cross section emerging from the light source n to be emitted substantially uniformly. The polarization conversion benefit 105 is used to change the polarization of the light emitted from the lens arrays 1〇4 and 1〇8, and the emitted light has only one polarization state, for example, converting the S light into a fluorescent light, thereby causing the polarization converter 1G5 to exit. The light is ρ light. The dichroic mirrors 202 and 204 separate the light beams emitted from the polarization converter 1〇5 into three colors of red (R), green (G), and blue (β), while the dichroic mirror 2〇2 reflects red light to the mirror 206. The mirror 2〇6 further reflects the red light onto the liquid crystal panel 3511 that modulates the red light, and the dichroic mirror reflects the green light onto the liquid crystal panel 35G that modulates the green light. The blue light passes through the retardation lens 4〇2 to 200916935 to the mirror 404'. The mirror 404 reflects the blue light onto the relay lens 406. The mirror 408 further reflects the blue light passing through the relay lens 406 to the modulation blue light liquid crystal panel 35B. on. The retardation lens 402 and the relay lens 406 function to make the optical path lengths of red, green, and blue light equal, and ensure that red, green, and blue light are simultaneously incident on the liquid crystal panels 35R, 35G, and 35B. The red, green, and blue lights are concentrated by the microlens arrays 302R, 302G, and 302B, and pass through the liquid crystal display elements 300R, 300G, and 300B, respectively, to improve the light utilization rate. The video signal source is A/D converted and modulated into an electric driving signal, and is applied to the liquid crystal panels 35R, 35G, and 35B. By controlling the rotation of the liquid crystal molecules, the passing rates of the three colors of R, G, and B are controlled to form a portable map. Like the three colors of the message. The three-color light carrying the image information is combined in the light combining prism 308 and projected onto the screen 27 via the projection lens 24 to form a color image. The microlens arrays 302R, 302G, and 302B are respectively located on the light incident side of the liquid crystal display elements 300R, 300G, and 300B, and the microlens arrays 302R, 302G, and 302B respectively include a plurality of microlenses 23R, 23G, and 23B. On the side of the exit surface of the liquid I and the crystal display elements 300R, 300G, and 300B, there are tunable lens arrays 304R, 304G, and 304B, respectively. The tunable lens arrays 304R, 304G, 304B respectively include a plurality of tunable lenses 25R, 25G, 25B, and the tunable lenses 25R, 25G, 25B correspond to the microlenses 23R, 23G, 23B, respectively. By adjusting the focal lengths of the adjustable lenses 25R, 25G, and 25B, the angles of the light rays emitted from the liquid crystal panels 35R, 35G, and 35B can be changed, thereby changing the angle of the light incident on the projection lens 24, and improving the resolution of the projected pupil plane.
在本實施方式中，可調透鏡陣列304R、304G、304B 11 200916935 為液態透鏡陣列。投影機100還包括三個透鏡調節單元45 (圖3中只示出調節液態透鏡304R焦距之透鏡調節單元 45，另兩個透鏡調節單元45分別調節液態透鏡陣列304G 和304B之焦距），三個透鏡調節單元45分別與液態透鏡 陣列304R、304G、304B電性連接。 請一併參閱圖3，以液態透鏡陣列304R為例，液晶顯 示元件300R之出射面設置有複數液態透鏡25R。液態透 鏡25R與微透鏡陣列302R中之微透鏡23R——對應，其 户· 位於液晶顯示元件300R之出射面一侧。投影鏡頭24之光 圈值（F/#值）=有效焦距（EFFL，Effective Focal Length ) /光瞳（Pupil )直徑，即表示角度大小。改變入射到投影鏡 頭24光線之角度相當於改變投影鏡頭24之光圈值。如此， 藉由焦距調節機制，例如透鏡調節單元45輸出之電位大小 改變液態透鏡25R之焦距，即相當於調節投影鏡頭24之 光圈值，從而改變入射到投影鏡頭24光線之角度，使得投 ，影晝面每一晝素之解析度均可以得到改善。 請再參閱圖4，以液態透鏡陣列304R為例，假設微透 鏡陣列302 R中之微透鏡23R之像方焦距為FI，液態陣 列304R中之液態透鏡25R之像方焦距為F2、平行入射光 束經微透鏡23R和液態透鏡25R會聚後，以角度Θ3入射 到投影鏡頭24上。 當投影機100發現螢幕某一區域出現晝面解析不良 時，藉由調節透鏡調節單元45輸出之電位大小來改變液態 透鏡25R之焦距，減小入射到投影鏡頭24光線之角度。 12 200916935 由於電壓減小時，液態透鏡之焦距增大。假設減小透鏡調 節單元45輸出之電位大小時，液態透鏡25R之焦距為 F2"，此時F2〜>F2、由於透鏡之焦距越長，對光線之會 聚特性越弱，從而出射光線以較小角度Θ4 (Θ4<Θ3)入射到 投影鏡頭24上，進而使投影晝面解析不良之區域得到改 善。 ' 上述投影機100藉由調節透鏡調節單元45輸出之電位 大小，改變液態透鏡25R之焦距，進而改變入射到投影鏡 頭24之光線之入射角度，從而使經投影鏡頭24投射到螢 幕27上之晝面具有較佳之解析度。 本技術領域之普通技術人員應當認識到，以上之實施 方式僅係用來說明本發明，而並非用作為對本發明之限 定，只要在本發明之實質精神範圍之内，對以上實施方式 所作之適當改變和變化都落在本發明要求保護之範圍之 内。 其一，僅對投影機100之一個液晶面板對應設置液態 透鏡陣列，例如，僅對應液晶面板35R設置液態透鏡陣列 304R，或者僅對應液晶面板35G設置液態透鏡陣列304G， 亦或液晶面板35Β設置液態透鏡陣列304Β，以分別對應 改變紅光或者綠光或者藍光入射到投影鏡頭24之光線角 度，改善投影晝面之解析度。 其二，僅對投影機100之兩個.液晶面板對應設置液態 透鏡陣列，例如，僅對應液晶面板35R和35G分別設置液 態透鏡陣列304R和304G，以改變紅光和綠光入射到投影 13 200916935 鏡頭24之光線角度，或者僅對應液晶面板35G和35B分 別設置液態透鏡陣列304G和304B，以改變綠光和藍光入 射到投影鏡頭24之光線角度，或者僅對應液晶面板35R 和35B設置液態透鏡陣列304R和304B，以改變紅光和藍 光入射到投影鏡頭24之光線角度，從而改善投影晝面之解 析度。 、 其三，對投影機100之三個液晶面板均對應設置液態 透鏡陣列，即對應液晶面板35R、35G和35B分別設置液 態透鏡陣列304R、304B和304G，以同時改變紅光、綠光 和藍光入射到投影鏡頭24之光線角度，從而改善投影晝面 之解析度。 投影機100之液態透鏡陣列304R、304B、304G也可 以與液晶面板35R、35B、35G分離。即液態面板35R、35B、 35G包括微透鏡陣列302R、302B、302G、液晶顯示元件 300R、300B、300G，液態透鏡陣歹丨J 304R、304B、304G 與 之分離。此外，液態透鏡陣列還可為其他形式之可調透鏡 陣列，如焦距可調液晶透鏡陣列，液晶透鏡陣列包括複數 液晶透鏡，可藉由施加之電壓使液晶分子移動改變液晶透 鏡之焦距。 14 200916935 【圖式簡單說明】 圖1為較佳實施方式中液晶面板之部分結構示意圖。 圖2為較佳實施方式中投影機之光學系統示意圖。 圖3為圖2所示投影機中微透鏡陣列和液態透鏡陣列 之示意圖。 圖4為圖2所示液態透鏡陣列中之液態透鏡與微透鏡 陣列中之微透鏡之位置關係示意圖。 15 200916935 【主要元件符號說明】In the present embodiment, the tunable lens arrays 304R, 304G, 304B 11 200916935 are liquid lens arrays. The projector 100 further includes three lens adjusting units 45 (only the lens adjusting unit 45 for adjusting the focal length of the liquid lens 304R is shown in Fig. 3, and the other two lens adjusting units 45 respectively adjust the focal lengths of the liquid lens arrays 304G and 304B), three The lens adjustment unit 45 is electrically connected to the liquid lens arrays 304R, 304G, and 304B, respectively. Referring to Fig. 3 together, taking the liquid lens array 304R as an example, the exit surface of the liquid crystal display element 300R is provided with a plurality of liquid lenses 25R. The liquid lens 25R corresponds to the microlens 23R in the microlens array 302R, and is located on the exit surface side of the liquid crystal display element 300R. The aperture value of the projection lens 24 (F/# value) = Effective Focal Length (EFFL) / Diameter (Pupil), which indicates the angle. Changing the angle of incidence of light incident on the projection lens 24 is equivalent to changing the aperture value of the projection lens 24. Thus, by the focal length adjustment mechanism, for example, the magnitude of the potential output by the lens adjustment unit 45 changes the focal length of the liquid lens 25R, that is, the aperture value of the projection lens 24 is adjusted, thereby changing the angle of the light incident on the projection lens 24, so that the projection and shadow are made. The resolution of each element of the picture can be improved. Referring to FIG. 4 again, taking the liquid lens array 304R as an example, it is assumed that the image focal length of the microlens 23R in the microlens array 302 R is FI, and the image focal length of the liquid lens 25R in the liquid array 304R is F2, parallel incident beam. After being concentrated by the microlens 23R and the liquid lens 25R, it is incident on the projection lens 24 at an angle Θ3. When the projector 100 finds that the pupil surface analysis is poor in a certain area of the screen, the focal length of the liquid lens 25R is changed by adjusting the magnitude of the potential output from the lens adjusting unit 45, and the angle of the light incident on the projection lens 24 is reduced. 12 200916935 The focal length of the liquid lens increases as the voltage decreases. Assuming that the magnitude of the potential output by the lens adjustment unit 45 is reduced, the focal length of the liquid lens 25R is F2", at this time, F2~>F2, the longer the focal length of the lens, the weaker the convergence characteristic of the light, thereby emitting light. The small angle Θ4 (Θ4<Θ3) is incident on the projection lens 24, and the area where the projection pupil is poorly analyzed is improved. The projector 100 described above changes the focal length of the liquid lens 25R by adjusting the magnitude of the potential output from the lens adjusting unit 45, thereby changing the incident angle of the light incident on the projection lens 24, thereby projecting the projection lens 24 onto the screen 27. The surface has a better resolution. It should be understood by those skilled in the art that the above embodiments are only used to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention. Changes and modifications are intended to fall within the scope of the invention. First, a liquid lens array is disposed correspondingly only to one liquid crystal panel of the projector 100. For example, only the liquid lens array 304R is disposed corresponding to the liquid crystal panel 35R, or the liquid lens array 304G is disposed only corresponding to the liquid crystal panel 35G, or the liquid crystal panel 35 is disposed in a liquid state. The lens array 304 is adapted to change the angle of the light incident on the projection lens 24 corresponding to red light or green light or blue light, respectively, to improve the resolution of the projection surface. Secondly, only two liquid crystal panels of the projector 100 are provided with a liquid lens array. For example, only the liquid crystal panels 35R and 35G are respectively provided with liquid lens arrays 304R and 304G to change the red and green light incident to the projection 13 200916935 The light angle of the lens 24, or only the liquid crystal panels 35G and 35B are respectively provided with the liquid lens arrays 304G and 304B to change the light angle of the green light and the blue light incident on the projection lens 24, or the liquid lens array is set only for the liquid crystal panels 35R and 35B. 304R and 304B, to change the angle of light incident on the projection lens 24 by red and blue light, thereby improving the resolution of the projection plane. Third, a liquid lens array is disposed corresponding to each of the three liquid crystal panels of the projector 100, that is, liquid lens arrays 304R, 304B, and 304G are respectively disposed corresponding to the liquid crystal panels 35R, 35G, and 35B to simultaneously change red, green, and blue light. The angle of the light incident on the projection lens 24, thereby improving the resolution of the projection plane. The liquid lens arrays 304R, 304B, 304G of the projector 100 can also be separated from the liquid crystal panels 35R, 35B, 35G. That is, the liquid panels 35R, 35B, 35G include microlens arrays 302R, 302B, 302G, liquid crystal display elements 300R, 300B, 300G, and the liquid lens arrays J 304R, 304B, 304G are separated therefrom. In addition, the liquid lens array can also be other forms of tunable lens arrays, such as a focus-adjustable liquid crystal lens array, which includes a plurality of liquid crystal lenses that can be moved by liquid crystal molecules to change the focal length of the liquid crystal lens. 14 200916935 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial schematic structural view of a liquid crystal panel in a preferred embodiment. 2 is a schematic view of an optical system of a projector in a preferred embodiment. Figure 3 is a schematic illustration of a microlens array and a liquid lens array in the projector of Figure 2. Fig. 4 is a view showing the positional relationship between the liquid lens in the liquid lens array shown in Fig. 2 and the microlens in the microlens array. 15 200916935 [Description of main component symbols]
微透鏡陣歹|J 12、302R、302G、302B 微透鏡 120、23R、23G、23B 液晶顯不元件 300R、300G、300B 液態透鏡陣列 13、304R、304G、304B 液態透鏡 130、25R、25G、25B 投影鏡頭 24 光源 11 反射鏡 106 、 404 、 206 ' 408 液晶面板 310、35R、35G、35B 偏振轉換器 105 合光棱鏡 308 延遲透鏡 402 中繼透鏡 分色鏡 406 202 ' 204 燈絲 112 反射燈罩 114 投影機 100 螢幕 27 透鏡陣列 104 、 108 照明光學系統 10 色分離光學系統 20 光調制系統 30 中繼光學系統 40 16 200916935 液晶顯不元件 透鏡調節單元 16 15、45Microlens arrays|J 12, 302R, 302G, 302B microlenses 120, 23R, 23G, 23B liquid crystal display elements 300R, 300G, 300B liquid lens arrays 13, 304R, 304G, 304B liquid lenses 130, 25R, 25G, 25B Projection lens 24 Light source 11 Mirrors 106, 404, 206' 408 Liquid crystal panel 310, 35R, 35G, 35B Polarization converter 105 Light combining prism 308 Delay lens 402 Relay lens dichroic mirror 406 202 ' 204 Filament 112 Reflecting lamp cover 114 Projection Machine 100 Screen 27 Lens array 104, 108 Illumination optical system 10 Color separation optical system 20 Light modulation system 30 Relay optical system 40 16 200916935 Liquid crystal display element lens adjustment unit 16 15, 45