201235704 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種防窺方法，特別是指一種利用3D 顯示技術的防窺方法。 【先前技術】 一般人在公開場所使用筆記型電腦的時候，總會擔心 他人窺視筆記型電腦螢幕上的畫面，因此基於隱私或保密的 需求，有些人會購買防窺貼片貼在筆記型電腦的螢幕上。但 是防窺貼片可能會出現以下缺點： 1. 無法完全防窺：防窺貼片提供60度左右的可視角， 所以在視角範圍内的其他人還是可以看見螢幕上的内容。 2. 使用不方便：當需要和他人共同觀看螢幕時，需要將 防窺貼片取下，之後必須將防窺貼片再貼回去。 3_亮度衰減：只有在完全垂直防窺貼片的正前方位置可 以看到接近原始的亮度，但只要有點偏離垂直方向，就 覺到亮度明顯衰減。 因此’尋求其它防窺方法以解決上述問題確實有其必 要。 、 【發明内容】 因此’本發明之目的，即在提供—種應用現有的抑立 體螢幕設備來達到防窺的目的並解決上述問題之防窺方法 及應用該方法的3D立體顯示裝置。 一為達到上述目的’本發明的防窺方法，應用在-搭配 一 3D立體眼鏡的3D平面顯示器該3d立體眼鏡具有—左 201235704 眼偏光濾片及—右眼偏光濾片，該方法包括： 、矜出第一景> 像至該3D平面顯示器的奇數列像 素，並控制該等奇數列像素的一第一光源朝一第—方向偏 光，使該等奇數列像素朝該第—方向顯示該第一影像； _(nB)輸出—與該第一影像不同之第二影像至該3D平面 顯不器的偶數列像素，並控制該等偶數列像素的—第二光源201235704 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method for preventing peeks, and more particularly to a method for preventing peeks using 3D display technology. [Prior Art] When a person uses a notebook computer in a public place, he or she always worries about the screen on the screen of the notebook computer. Therefore, some people will purchase a privacy-proof patch on the notebook computer based on privacy or confidentiality. On the screen. However, the anti-spy patch may have the following disadvantages: 1. It is not completely anti-peep: the anti-spy patch provides a viewing angle of about 60 degrees, so other people in the viewing range can still see the content on the screen. 2. Inconvenient use: When you need to watch the screen with others, you need to remove the anti-spy patch, and then you must put the anti-spy patch back. 3_Brightness Attenuation: Near-original brightness can be seen only in front of the fully vertical anti-spy patch, but as long as it deviates slightly from the vertical direction, the brightness is noticeably attenuated. Therefore, it is indeed necessary to seek other anti-peep methods to solve the above problems. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a sneak-proof method and a 3D stereoscopic display device to which the present invention is applied to provide an anti-spying effect and to solve the above problems. In order to achieve the above object, the anti-spying method of the present invention is applied to a 3D flat-panel display with a 3D stereoscopic glasses. The 3D stereoscopic glasses have a left-hand 201235704 eye polarizing filter and a right-eye polarizing filter, and the method includes: Placing a first scene> like an odd column of pixels to the 3D flat panel display, and controlling a first light source of the odd column pixels to be polarized toward a first direction, such that the odd column pixels are displayed toward the first direction An image; _(nB) output - a second image different from the first image to the even column of the 3D planar display, and controlling the second source of the even column of pixels
朝一第二方向偏光，使該等偶數列像素朝該第二方向顯示該 第一影像；及 比（C)將該汕立體眼鏡的左眼偏光濾片及右眼偏光濾片 轉該第方向，使接收該第一影像並阻擋該第二影像。 本毛月應用上述防窺方法的一種3D立體顯示裝置，包 括3D立體眼鏡及_ 3D平面顯示器。 Θ 3^立體眼鏡具有_左眼偏光滤片及—右眼偏光遽片 及一控制该左眼偏光濾片及該右眼偏光濾片之偏光方向的 控制器。 一 „ 具有複數列像素的顯示面 控制該等像素之偏光光源的光源控制單元，一提供影 像訊號的影像處理單元’及一顯示模式切換單元。… _不模式切換單元㈣—㈣料訊號 像處理單元㈣-第—料給示面板的 ; :，並控制該等奇數列像素的一第—光源朝一第一方向： =使广奇數列像素朝該第一方向顯示該第一影像，同時 像處理單元輪出—與該第-影像不同之干擾影像 至该顯㈣板的偶數列像素，並㈣料偶數列像素的 5 201235704 二光源朝-第二方向偏光’使該等偶數列像素朝該第 顯示該干擾影像，並同步控制該3D立體眼鏡的控制^^ 將該左眼偏光濾片及該右眼偏光濾片皆轉至該第一方儀 接收該第一影像並阻擋該干擾影像。 °，u 較佳地，該第-方向與第二方向互為垂直。 較佳地’ 6亥第一影像是該第一影像的互補影像。 較佳地，該第二影像更包含一雜訊。 較佳地，該顯示模式切換單元收到一仙顯示 號’會㈣該影像處理單元將-畫面影像的奇數列影像資料 j成該第t像並輸出給該顯示面板的該等奇數列像素並 將該畫面影像的偶數列影像資料組成的-第二影像輸出仏 該顯示面板的該等偶數列像素，且令該光源控制單元控制: 等奇數列像素的該第-光源朝該第—方向偏光，使該等奇數 列像素朝該第-方向顯示該第—影像，並控制該等偶數列像 素的該第—光源朝s亥第二方向偏光使該等偶數列像素朝該 第-方向顯7F該第二影像’並同步控制該3D立體眼鏡的控 制器’使將該右眼偏光濾片轉至該第—方向，以接收來自該 第方向的第-影像，並將該左眼偏光據片轉至該第二方 向，以接收來自該第二方向的第二影像。 _本發明的功效在於藉由現有3D立體顯示技術，將待顯 示的影像畫面輸出至3D立體顯示器的奇數列（或偶數列）像 素，並使該等奇數列像素朝―第—方向顯㈣影像畫面， 且將-干擾影像輸出至3D立體顯示器的偶數列(或奇數列） 像素’並使该等偶數列像素朝—與該第_方向垂直的第二 201235704 方向顯示該干擾影像，同時控制3D立體眼鏡的左眼偏光遽 片及右眼偏光濾片皆轉至第一方向，使同時接收影像畫面 並阻擋干擾影像’藉此讓未配載3D立體眼鏡的旁人無法窥 視螢幕顯示的影像畫面，而達到本發明防窺的目的。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在以 下配合參考圖式之較佳實施例的詳細說明中，將可清楚的呈 現。 參見圖1及圖2所示’是本發明防窺方法的一較佳實施 例的流程及應用該防窺方法之3D立體顯示裝置的一較佳實 施例之電路方塊圖。3D立體顯示裝置包括一 3D立體眼鏡2 及一 3D立體顯示器3。 3D立體眼鏡2具有一左眼偏光濾片21及一右眼偏光濾 片22，以及一控制左眼偏光濾片21及右眼偏光濾片22之 偏光方向的控制器23。 3D立體顯示器3包含一顯示面板31、一光源控制單元 32、一影像處理單元33及一顯示模式切換單元34。 如圖3所示，顯示面板31在本實施例是一液晶顯示面 板，如圖3所示，其包含一由複數像素p構成的液晶面板 30及相關驅動電路（圖未示）。且該等像素p形成複數像素 列 ΙΊ ' Γ2、Γ3、... rn 〇 光源控制單元3 2用以控制顯示面板31之像素ρ的偏光 光源方向。 影像處理單元33用以提供一影像訊號給顯示面板31。 201235704 顯不模式切換單元34用以根據一顯示模式控制指令控 制顯示面板31的g貞干f β B+措斗 ㈣不方式且顯讀式切換單元34可以採 用有線或無線方式與3D立體眼鏡2的控制㈣進行通訊， 在本實施例是以採用無線通訊方式為例。 當顯示模式切換單元34收到一汕顯示模式訊號，會控 制影像處理單元33將一 頂備輸出的畫面衫像中的奇數列影 科..且成一第—影像R，並如圖3所示， ==中的偶數列影像資料組成-第二影像丄 X顯二板31的該等偶數列像素卜―,„(圖3中 π ’並令光源控制單元32控制該等奇數列像素 ΓΓ1·5..."—1的—第—光源朝—第—方向偏光，使該等奇 數列像素η、r3、r5…r丨顱3货., ::^單心::=:::== 、第一光源朝一第二方 万内偏先，使該等偶數列像素r2、 ―工朝該第二方向顯示第二影像l。 常 同時如圖4所示，顧干描々 eei 一 立體目•…、式刀換早元34會同步控制3D 二體眼鏡2的控制器23’使將右眼偏光據Polarizing in a second direction, causing the even-numbered columns of pixels to display the first image in the second direction; and (C) rotating the left-eye polarizing filter and the right-eye polarizing filter of the 汕 stereoscopic glasses to the first direction, Receiving the first image and blocking the second image. A 3D stereoscopic display device using the above anti-peep method, including 3D stereo glasses and a 3D flat display. Θ 3^ stereo glasses have a _ left-eye polarizing filter and a right-eye polarizing cymbal and a controller for controlling the polarization direction of the left-eye polarizing filter and the right-eye polarizing filter. a light source control unit having a plurality of columns of display surfaces for controlling the polarized light sources of the pixels, an image processing unit for providing image signals and a display mode switching unit. _ No mode switching unit (4) - (4) material image processing The unit (4)-the first material is given to the display panel; and, and a first light source of the odd-numbered column pixels is controlled to face a first direction: = the wide odd-numbered column pixel is displayed in the first direction, and the image processing is performed The unit rotates—the interference image different from the first image to the even column of the display (four) board, and (4) the even-numbered column of pixels 5 201235704 two light sources are polarized toward the second direction 'to make the even-numbered columns toward the first Displaying the interference image and synchronously controlling the control of the 3D stereo glasses, and transferring the left-eye polarizing filter and the right-eye polarizing filter to the first square to receive the first image and block the interference image. Preferably, the first direction and the second direction are perpendicular to each other. Preferably, the first image is a complementary image of the first image. Preferably, the second image further includes a noise. Preferably, The display mode switching unit receives a display number of the display unit. (4) the image processing unit converts the odd-numbered column image data j of the screen image into the t-th image and outputs the odd-numbered column pixels to the display panel and images the image. The second image composed of the even-numbered image data is output to the even-numbered columns of the display panel, and the light source control unit controls: the first-light source of the odd-numbered column of pixels is polarized toward the first direction, so that the The odd-numbered column pixels display the first image in the first direction, and control the first light source of the even-numbered column pixels to be polarized toward the second direction of the second-order column, so that the even-numbered columns of pixels are displayed toward the first direction. 'and synchronously controlling the controller of the 3D stereo glasses' to rotate the right-eye polarizing filter to the first direction to receive the first image from the first direction, and to transfer the left-eye polarizing film to the first The second direction is to receive the second image from the second direction. The effect of the present invention is to output the image to be displayed to the odd column (or even column) pixel of the 3D stereo display by the existing 3D stereoscopic display technology. And causing the odd-numbered columns to display the (fourth) image frame in the "first" direction, and outputting the -interfering image to the even-numbered column (or odd-numbered column) of the 3D stereoscopic display and making the even-numbered columns of pixels toward - and the The second 201235704 direction of the vertical direction displays the interference image, and the left-eye polarized film and the right-eye polarized filter that control the 3D stereo glasses are all turned to the first direction, so that the image is received at the same time and the interference image is blocked. The other person who is carrying the 3D stereo glasses cannot view the image screen displayed on the screen to achieve the purpose of the present invention. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are in conjunction with the following reference drawings. The detailed description of the preferred embodiment will be clearly shown. Referring to FIG. 1 and FIG. 2, the flow of a preferred embodiment of the anti-spying method of the present invention and the 3D stereoscopic display device using the same A block diagram of a preferred embodiment. The 3D stereoscopic display device includes a 3D stereoscopic glasses 2 and a 3D stereoscopic display 3. The 3D stereoscopic glasses 2 have a left-eye polarizing filter 21 and a right-eye polarizing filter 22, and a controller 23 for controlling the polarization directions of the left-eye polarizing filter 21 and the right-eye polarizing filter 22. The 3D stereoscopic display 3 includes a display panel 31, a light source control unit 32, an image processing unit 33, and a display mode switching unit 34. As shown in FIG. 3, the display panel 31 is a liquid crystal display panel in this embodiment. As shown in FIG. 3, the display panel 31 includes a liquid crystal panel 30 composed of a plurality of pixels p and an associated driving circuit (not shown). And the pixels p form a plurality of pixels ΙΊ ' Γ 2, Γ 3, ... rn 〇 The light source control unit 3 2 controls the direction of the polarized light source of the pixel ρ of the display panel 31. The image processing unit 33 is configured to provide an image signal to the display panel 31. 201235704 The display mode switching unit 34 is configured to control the display panel 31 according to a display mode control command to control the display panel 31, and the explicit readout switching unit 34 can be wired or wirelessly connected to the 3D stereo glasses 2 Control (4) to communicate, in this embodiment is to take the wireless communication method as an example. When the display mode switching unit 34 receives a display mode signal, the image processing unit 33 controls the image processing unit 33 to output an odd-numbered column in the shirt image of the top output image and form a first image R, as shown in FIG. The even-numbered column image data of == is included in the second image 丄X display second board 31 of the even-numbered columns of pixels ―, ′ (π′ in FIG. 3 and causes the light source control unit 32 to control the odd-numbered columns of pixels ΓΓ1· 5..."-1--the first light source is polarized toward the first direction, so that the odd-numbered columns of pixels η, r3, r5...r丨 33 goods., ::^ single heart::=::: == , the first light source is biased toward a second square, so that the even-numbered columns of pixels r2, - the second image l is displayed in the second direction. At the same time, as shown in FIG. 4, Gu Gan traces eei one Stereoscopic eyes..., the knife will change the controller 34 of the 3D binocular glasses 2 to make the right eye polarized.
=，以接收來自第一方向的第-影像r，並將左眼偏L 第-方向是水平方向，第方向的第二影像L，其中 是45。方向，第-方…方向疋垂直方向(或者第-方向 ~田/ 35°方向，兩者相差90。），夢此 备使用者配戴3D立體眼鏡 ）藉此 奇數列像素n、nm者的右眼-會看到該等 1 不的第一影像R，且使用者的 201235704 =會看到該等偶數列像素。、―rn =再經由使用者的眼睛將第一影像,和第二影像以: 立體的畫面影像。這種偏光技術也是 體影像的方式之一。 β丁儿立 而本㈣的特點即在於應用上述3])顯 窺的目的。因此如圖,从& 水硬到防 元34收到一防窺模々的步驟U所示’當顯示模式切換軍 莫式訊號，會控制影像處理單元33 一影像R(或第二影像L)給顯示面板31的該等奇數列= Γ1 Γ3、Γ5...ΓηΗ(圖5中以”『表示），如圖5所示，並人 光源控制軍元32控制該等奇數列像素η、―… -h原朝第—方向偏光，使該等奇數列像素^mi 朝第方向（即水平方向）顯示第—影像R(或第二影像L)， 並進订步驟12,令影像處理單元33輸出—與第—影像r(或 第二影像L)不同之干擾影像F給顯示面板31的該等偶數列 —' Γδ Γη(圖5中以” F”表示），並令光源控制單 兀32控制4等偶數列像素Γ2、^··.η的第二光源朝第二 方向偏光’使該等偶數列像素r2、n、r6.. η朝該第二方向（即 垂直=向）顯示干擾影像F，同時，如圖6所示顯示模式 刀換單7L 34同步控制3D立體眼鏡2的控制器，使將左 眼偏光濾片21及右眼偏光遽片22皆轉至第一方向（水平方 向），使同時接收第—影像R(或第二影像L)並阻擋干擾影像 F田…、也可將第一影像R(或第二影像u與干擾影像卩對 調’亦即干擾影像F輸出至該等奇數列像素⑴㈣〜， 而第〜像R(或第二影像L)輸出至料偶數列像素^、r4、 201235704 Γ6··· Γη 0 藉此，當使用者配載3D眼鏡2時，使用者可透過眼鏡 清楚看到平面的第一影像R，但不會看到干擾影像F，且由 於現在的影像解析度（或dpi，dot per inch)皆已相當高，所 以即使第一影像R(或第二影像L)只有原始畫面影像的一半 資料，使用者並不會察覺和原始畫面影像有差別。反之，沒 有配載3D眼鏡2的使用者則因裸視的關係，會同時看到第 影像R(或第二影像L)和干擾影像f交替產生的混合影 像’以致無法看彳楚第一影像R，而達到防止螢幕顯示的影 像被窺視的目的。 值得一提的是，在本實施例中干擾影像F可以是第一影 像R(或第二影像L)的互補影像（互補色），這會使得兩者混 合後讓沒有酉己冑3D立體眼鏡2的使用者看到的整個螢幕變 成-片灰色。此外，還可在干擾影像F中再加人雜訊，可進 一步干擾裸眼的視覺並加強防窺的效果。 此外，本實施例的3D立體顯示器3可以是一獨立 (Stand-alone)顯示器或是整合在筆記型電腦上做為筆記 型電腦的螢幕顯示器。 &上所述’上述實施例藉由現有犯立體顯示技術，將 -待顯示的影像晝面輸出至3D立體顯示器3的奇數列（或偶 數列）像素’並使該等奇數列像素朝—第一方向顯示該影像 畫面’且將-干擾影像輸出i 3D立體顯示器3的偶數列（或 奇數列)像素，並使該等偶數列像素朝一與該第一方向垂直 的第一方向顯不針擾影像，同時控制犯立體眼鏡2的左 10 201235704 眼偏光濾片21及右眼偏光濾片22皆轉至第—方向使同時 接收影像晝面並阻擋干擾影像F，藉此讓未配載扣立^ 鏡2的旁人無法窥視螢幕顯示的影像畫面，而達到，本發明防 窺的的功效和目的，並解決先前技術之防窺貼片的缺點。 惟以上所述者，僅為本發明之較佳實施例而已當不能 以此限定本發明實施之範圍，即大凡依本發明巾請專利範圍b 及發明說明内容所作之簡單的等效變化與修飾，皆仍屬本發 明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是本發明防窥方法的一較佳實施例的流程圖； 圖2是本發明3D立體顯示裝置的一較佳實施例的3D 立體眼鏡示意圖及3D立體顯示器的主要電路方塊圖； 圖3是本實施例在3D顯示模式下之顯示面板上每一列 像素所顯示影像内容示意圖； 圖4顯示本貫施例在3D顯示模式下之3D立體眼鏡的左 眼偏光濾片及右眼偏光濾片之偏光方向不同且互為垂直示 意圖； 圖5是本實施例在防窺模式下之顯示面板上每一列像 素所顯示影像内容示意圖；及 圖6顯示本實施例在防窺模式下之3D立體眼鏡的左眼 偏光濾片及右眼偏光濾片之偏光方向相同示意圖。 11 201235704 【主要元件符號說明】 11-13 流程步驟 2 3D立體眼鏡 2 2右眼偏光遽片 21左眼偏光滤片 23控制器 31顯示面板 33影像處理單元 3 3D立體顯示器 3 0液晶面板=, to receive the first image r from the first direction, and to bias the left eye L. The first direction is the horizontal direction, and the second image L in the first direction, where is 45. Direction, the first-side...direction 疋 vertical direction (or the first direction ~ field / 35 ° direction, the difference between the two 90.), dream of this user wear 3D stereo glasses) to this odd column of pixels n, nm Right eye - will see the first image R of the 1st, and the user's 201235704 = will see the even column of pixels. ―rn=The first image and the second image are then viewed by the user's eyes as: a stereoscopic image. This polarizing technique is also one of the ways of volume imaging. The characteristic of (4) is to apply the above 3]). Therefore, as shown in the step U from the & hydraulic to the defense element 34, when the display mode switches the military mode signal, the image processing unit 33 controls the image R (or the second image L). The odd-numbered columns to the display panel 31 = Γ1 Γ3, Γ5...ΓηΗ (indicated by "" in FIG. 5, as shown in FIG. 5, the human light source control unit 32 controls the odd-numbered columns of pixels η, ―...-h is oriented in the first direction, so that the odd-numbered columns of pixels ^mi display the first image R (or the second image L) in the first direction (ie, the horizontal direction), and the step 12 is advanced to cause the image processing unit 33 Output - the interference image F different from the first image r (or the second image L) is given to the even columns - ' Γ δ Γ η (indicated by "F" in Fig. 5) of the display panel 31, and the light source control unit 32 Controlling the second light source of the even-numbered column pixels Γ2, ^··.η to polarize in the second direction to cause the even-numbered column pixels r2, n, r6.. η to show interference in the second direction (ie, vertical=direction) Image F, at the same time, as shown in FIG. 6, the display mode switch 7L 34 synchronously controls the controller of the 3D stereo glasses 2 so that the left-eye polarizing filter 21 and the right eye are provided. The polarizing cymbals 22 are all turned to the first direction (horizontal direction), so that the first image R (or the second image L) is simultaneously received and the interference image F field is blocked, and the first image R (or the second image u) can also be Interfering with the interference image '', that is, the interference image F is output to the odd-numbered columns of pixels (1) (4)~, and the first image R (or the second image L) is outputted to the even-numbered columns of pixels ^, r4, 201235704 Γ6··· Γη 0 Therefore, when the user loads the 3D glasses 2, the user can clearly see the first image R of the plane through the glasses, but does not see the interference image F, and due to the current image resolution (or dpi, dot per The inch) is already quite high, so even if the first image R (or the second image L) has only half of the original image, the user does not notice the difference from the original image. Otherwise, the 3D glasses 2 are not loaded. The user sees the mixed image of the image R (or the second image L) and the interference image f at the same time due to the naked view, so that the first image R cannot be seen, and the image displayed on the screen is prevented. The purpose of being peeped. It is worth mentioning that in this In the example, the interference image F may be a complementary image (complementary color) of the first image R (or the second image L), which may cause the entire screen that is not seen by the user of the 3D stereoscopic glasses 2 to be mixed after the two are mixed. - Gray color. In addition, noise can be added to the interference image F to further interfere with the naked eye and enhance the anti-peep effect. In addition, the 3D stereoscopic display 3 of the embodiment can be an independent (Stand-alone) The display is a screen display integrated as a notebook computer on the notebook computer. & The above embodiment outputs the image to be displayed to the 3D stereoscopic display 3 by the existing stereoscopic display technology. An odd-numbered column (or even-numbered column) of pixels 'and causes the odd-numbered columns of pixels to display the image frame in a first direction' and the interfering image is output to an even-numbered column (or odd-numbered column) of the i 3D stereoscopic display 3 The even-numbered columns of pixels display a non-challenopic image toward a first direction perpendicular to the first direction, and simultaneously control the left 10 201235704 eye polarizing filter 21 and the right-eye polarizing filter 22 of the stereo glasses 2 to the first party In order to simultaneously receive the image surface and block the interference image F, the person who is not equipped with the button 2 can not peek into the image displayed on the screen, thereby achieving the effect and purpose of the present invention. The shortcomings of prior art anti-spy patches. However, 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 simple equivalent change and modification of the patent scope b and the description of the invention according to the invention. All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart of a preferred embodiment of the anti-spying method of the present invention; FIG. 2 is a schematic view of a 3D stereoscopic glasses and a main 3D stereoscopic display of a preferred embodiment of the 3D stereoscopic display device of the present invention; FIG. 3 is a schematic diagram showing image content displayed in each column of pixels on the display panel in the 3D display mode according to the embodiment; FIG. 4 is a left-eye polarizing filter of the 3D stereoscopic glasses in the 3D display mode. And the right-eye polarizing filter has different polarization directions and is perpendicular to each other; FIG. 5 is a schematic diagram of image content displayed by each column of pixels on the display panel in the anti-spy mode according to the embodiment; and FIG. 6 shows the embodiment in the anti-spy The polarization directions of the left-eye polarizing filter and the right-eye polarizing filter of the 3D stereo glasses in the mode are the same. 11 201235704 [Description of main component symbols] 11-13 Process steps 2 3D stereo glasses 2 2 Right-eye polarized diaphragm 21 Left-eye polarizing filter 23 Controller 31 Display panel 33 Image processing unit 3 3D stereo display 3 0 LCD panel
32光源控制單元 34顯示模式切換單元 P 像素32 light source control unit 34 display mode switching unit P pixel
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