M306668 2006006 20810twf.doc/006 八、新型說明： 【新型所屬之技術領域】 本創作是有關於一種平面顯示器，且特別是有關於一 種具有自動亮度調整功能之平面顯示器。 【先前技術】 平面顯示器例如液晶顯示器，近來已被廣泛地使用。 隨著半導體技術的改良，使得液晶顯示器具有低的消耗電 功率、薄型量輕、解析度高、色彩飽和度高、壽命長等優 點，因而廣泛地應用在筆記型電腦或桌上型電腦的液晶榮 幕及液晶電視(LCD TV)等與生活息息相關之電子產品。其 中’「可攜式液晶顯不器」正是液晶顯示器的一種形式。 「可攜式液晶顯示器」，顧名思義即是液晶顯示器具有容 易移動之特性，可讓人攜帶並便於觀看液晶顯示器的顯= 晝面。正由於它的便繼及可移祕，因此可 晶 =會隨著使用者核的環境，而面臨各種不^ 晴天的時候，環境的亮度就可能會很ί = 環境下(例如電影院)時，環境的亮度就可 若是在明亮的環境下（即環 因，度與液晶面板亮度 === 者感覺液晶面板之影像過暗。反广，過大而讓使用 境，同樣會發生週遭環产真，右疋在壳度很暗的環 大的問題’造成視覺上的：?：曰曰:板売度1間對比過 、 為了克服這些問題，因此 M306668 2006006 20810twf.doc/006 必須讓液晶面板隨著環境亮度的改變，整 的液晶面板顯示器上，會提供使用者儿又 白〇 :器的亮度。然而’以手動方式來調整顯示: 會造成使用上之不便，尤其在某些情 °°儿又^在 在開車或操作等，就不方便以手=如當使用^ 的亮度。另外，每當週遭環境亮度―改、:正液晶顯不斋 :式來調整顯示器的亮度’也會增力‘二使 【新型内容】 因此，本創作的目的就是在提供 ===器’包括了感測單元舆控 才工制早兀肖匕根據感測單元所量測到外 古 ^ 而自動調整螢幕的亮度。 *⑽度的變化’ 基於上述及其他目的，本創作提出 ，整功能之平面顯示器，包括感測單元、顯^ 單兀。其中的感測單元是用來量測外界_境的 ^ 單元則連胁_單元觸示單元⑼ U單控= 量測結果，來驢—單元的亮度。 縣測早兀之 之平:= 乍:=例所述具有自動亮度調整功能 之十面,4不☆上奴控制單元包括—個 至感測單元’用以依據感測單元 = 亮度值帽擇設亮度值。、匕果，自夕個預設 6 M306· 2_一 本創作之具有自動亮度調整功能之平面顯示器，可依 照外界環境亮度的變化，適時地調亮或調暗液晶顯示器的 壳度，因此可讓使用者便於判讀液晶顯示器螢幕上的 的功能。 、β Ρ為讓本創作之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉較佳實施例，並配合所附圖式，作詳細說 明如下。 v。 【貫施方式】 圖1繪示了為一種具有自動亮度調整功能之平面顯示 器的方塊圖。在此實施例中，平面顯示器以一液晶顯示器 為例。上述液晶顯示器譬如是可攜帶式液晶顯示器（車用^ 液晶顯示器、掌上型液晶顯示器或掌上型影像光碟播放器 等）。請參照圖1，液晶顯示器包括了感測單元100、使用 者介面120、控制單元140與顯示單元16〇。其中控制單元 140連接感測單元100與顯示單元16〇，使用者^面12〇 耦接於控制單元140。其中，感測單元1〇〇包括了 一個光 感測元件102,控制單元140包括了控制電路·142、驅動電 路143與焭度調整電路144，顯示單元16〇包括了 一個背 光模組162與顯示面板164。 在本實施例中，感測單元100中的光感測元件1〇2, 可用來感測外界的亮度並且產生一個目前的環境亮度值。 控制單元140中的控制電路142接收到環境亮度值之後， 便/、上··入取得的環;I兄売度值做比較。當控制電路M2發 現兩者相同時’表示環境亮度並無改變，那麼液晶顯示^ 7 M306668 2006006 20810twf.doc/006 亮度也就自财需要調整。或者，控制電路142將目前的 環境亮度值與上-次取得_境亮度值做比較後，發現兩 者不同’但彼此差距是在-個預設值之内。這種情況表示 液晶顯示器所處的週遭環境亮度有所變化，但此變化的程 度處於可接受的容忍翻内，所崎晶顯示社亮度也不 需要調整。 右栓制笔路142接收到的目前環境亮度值，盥上一次 ^得的環境亮度值做比較後，發現兩者不同且差距超過預 定值時，表示環境亮度有改變且超過可容忍的範圍，此時 控制電路142便會輸出控制信號給亮度調整電路144。亮 度調整電路144便紐控制錢而對#光模組162中的^ 源(例如疋燈官)進行亮度調整。而控制電路同時也透 ，連接於控制電路142的驅動電路143，輸出—驅動信號 '驅動顯不面板164。如此—來，當外 壳度值升高’控制單元140便會對顯示單元16〇進行調整， =此液晶顯示器中背光模組162的亮度便會調亮；·反之正， 當外界環境的亮度降低時，感測單元100測^ ，’控制單元U0便會對顯示單元16()進行調 =晶顯不器中背光模組162的亮度便會調暗。上述兩種情 時H助:^Γ綱刪心對比過大 另外，控制單元140還可以耦接使用者介面12〇。其 中，使用者介面12G是提供使用者財動的方式自行調整 M306668 2006006 20810twf.doc/006 背光模組162的亮度。當使用者利用使用者介面i2〇來調 整顯示單元160的亮度時，控制單元14〇就會依據使用^ 的輸入來對背光模組162的亮度進行調整。如此一來，液 晶顯示器的亮度亦可隨使用者之習慣或喜好作調整。 此外，另-種的實施方式如下所述。首先，利用感測 單元100中的光感測元件102感測外界的亮度，並且產生 一個目前的環境亮度值。控制單元14〇中的控制電路142 接收到環境亮度值之後，會將目前的環境亮度值與多個預 設之參考亮度值比較，得出目前的環境亮度值位於這些參 ，亮度值所構成的哪一個區間中。由於這些參考亮度值的 每-個區間可再定義出各自對應的預設亮度值，因此控制 ，路142最後可選出目前的環境亮度值對應於哪一個預設 壳度值。然後控制電路142便依據選出的預設亮度值，輸 出控制信號給亮度調整電路144。亮度調整電路144便依 照控制信號而對背光模組162中的光源(例如是燈管）進行 凴度调整。而控制電路142同時也透過連接於控制電路142 φ 的驅動電路143，輸出-驅動信號來驅動顯示面板164。· 、，圖2A繪示了依照本創作之另一較佳實施例的一種液 晶平面顯不器亮度的自動調整方法流程圖，可以適用在例 如圖1所繪示的平面液晶顯示器中。在此實施例中，平面 ，不器以一液晶顯示器為例，此液晶顯示器譬如是掌上型 影像光碟播放器。請同時參照圖丨與圖2A，首先，偵測外 境梵度並取得環境亮度值（步驟S2〇2)，再依據偵测 結果调整平面顯示器亮度（步驟S204)。步驟S202的進一 M306668 ‘ 2006006 2081〇twf.doc/〇〇6 y洋、、田"兒明如下··當液晶顯示器啟動時，光感測元件102 便，始，外界環境的亮度，即為步驟S210。此時便可以 取得目鈿的環境亮度值L1(步驟S220)。而步驟S204的進 一步洋細說明如下··先進行步驟S23G，也就是控制電路 142將環境亮度值u與預設之參考亮度值比較，再依據比 ，結果來判斷環境亮度值L1是屬於哪-個預設亮度值的 範圍（步驟S24G)。最後依照步驟S24〇所選出的預設亮度 值調整液晶顯示器的亮度(步驟S250)。另外，以上所提^ 的預設亮度值與參考亮度值的數量與大小並無限制，可以 視需要作調整。換句話說，預設亮度值與參考亮度值的個 數及數值大小可在產品出廠前預先做設定，或是由使用者 依個人吾好透過使用者介面12〇進行調整。 圖2B繪示了圖2A中步驟S23〇與步驟S24〇的進一步 说明之示思圖。在本實施例中，以預設四個參考亮度值為 例，然而本創作並無限制參考亮度值的數量。請見圖 2B,圖中R1〜R4代表的是預設的參考亮度值。因此>，我; • 可以把低於參考亮度值Ri的區間定義為第一預嗖宾产 值，介於參考亮度值R1與參考亮度值Μ的區間定^^ 二預設亮度值’介於參考亮度值R2與參考亮度值的區 間定義為第三預設亮度值，介於參考亮度值Rs與來者二 度值R4的區間定義為第四預設亮度值，大於表古= R4的區間則定義為第五預設亮度值。當偵測外界J二 度，取得目前的環境亮度值L1後，便可以 衣^、冗 控制電路142將環境亮度值L1與預設的參 M306668 2006006 20810twf.doc/006 R1〜R4做比較(步驟S230)，以決定出L1屬於哪一個區間。 假設L1為大於參考亮度值R2但小於參考亮度值R3，則 此區間便對應於第三預設亮度值，此時便選擇出適合的第 三預設亮度值(步驟S240)。本實施例中以R4 >R3〉R2>R1 為例，則弟五預设党度值為最高，再依次往第一預設亮度 值遞減。使用者可以依個人喜好透過使用者介 調整第-職亮度值〜第五賊亮纽。^縣 一圖3繪示了依照本創作之另一較佳實施例的一種平面 顯示器亮度的自動婦方法，可以適用在例如圖丨所繪示 的平面顯示器中。在此實施例中，平面顯示器以一液晶顯 =器為例，此液晶顯示器譬如是掌上型影像光碟播放器。' 當，晶顯示器啟動，自動調整方法開始時，首先判斷使用 者是否以手動的方式來調整液晶顯 ，。若是使用者財動的方式來調整液晶:器^ ^ ’則依據使用者的輸入來調整液晶顯示器的亮度，進人 整調整模式(步驟S219)。妓使用者沒有以手動的 居、/調整液晶顯示斋的免度時，光感測元件102便開格 所，外界環境的亮度，即為步驟咖。此時如步驟s2〇3 二’控制電路142便可以取得目前的環境照明度值u。 行步驟S2G5’控制電路142計算出將目前所取得的 明度值L1與上-次所取得的環境卿度值u兩者 =步驟S207為判斷兩者之差的結果。當u與l ΐίίΓ韻值科，代糾界環·亮度沒有改變； —雖二、有改變，但是在可接受的範圍内。因此，液晶顯 M306668 . 2006006 20810twf.doc/006 示器的亮度便維持不變，也就是步驟s所欽述的内容。 上述職值N為可事先設定的任聽值，較佳者為n大於 0 〇 然而’當U與L2兩者之差大於或等於預設值 此時進行倾S2U，纽是啸u與L2 _大小。當目 剛取，的環境亮度值L1小於上—次所取得的環境亮度值 t日守’這代表外界環賴暗。此時，本創作就會如步驟 S213所述，降低液晶顯示器的亮度。 …反之，當目前取得的環境亮度值L1大於上一次所取 得，環境亮度值L2時，就代表外界環境變亮。此時就會 ，行步驟S215，也就是調高液晶顯示^之亮度，以使環境 壳度與液晶顯示器的亮度間的對比緩和些。在進行完上述 =步驟S209、S213或S215之後，便會回到步驟S217 ^ 續操作。 為了說明本創作確實能達成以上所述之功效，因此實 際進行貫驗並記錄結果，所得出的量測結果如下·· 量測環境··室内 量測工具·· LCD Color Analyser 又測物·莩上型影像光碟播放器之7 inch液晶顯示 板 … —--土兄冗度（cd/m ) _面板亮度(cd/m2)M306668 2006006 20810twf.doc/006 VIII. New description: [New technical field] This creation is related to a flat panel display, and in particular to a flat panel display with automatic brightness adjustment function. [Prior Art] A flat panel display such as a liquid crystal display has recently been widely used. With the improvement of semiconductor technology, the liquid crystal display has the advantages of low power consumption, light weight, high resolution, high color saturation, long life, etc., and thus is widely used in the liquid crystal of a notebook computer or a desktop computer. Screens and LCD TVs and other electronic products that are closely related to life. Among them, the "portable liquid crystal display" is a form of liquid crystal display. "Portable LCD", as its name suggests, is a mobile display that is easy to move and allows you to carry and view the LCD display. Because of its succession and portability, it can be crystallized. When it comes to the user's nuclear environment, it will face a variety of sunny days, and the brightness of the environment may be very good = when the environment (such as a movie theater), The brightness of the environment can be in a bright environment (ie, the cause of the ring, the brightness of the LCD panel ===, the image of the LCD panel is too dark. The anti-wide, too large and let the use of the environment, the same around the ring, The problem of the right 疋 in the very small ring of the shell 'causes the visual:?: 曰曰: plate contrast 1 contrast, in order to overcome these problems, so M306668 2006006 20810twf.doc/006 must let the LCD panel The change of the ambient brightness, the whole LCD panel display, will provide users with the brightness of the device: However, 'manually adjust the display: it will cause inconvenience in use, especially in some cases ^When driving or operating, it is not convenient to use hand = such as when using the brightness of ^. In addition, whenever the surrounding environment brightness - change,: positive liquid crystal display is not fast: adjust the brightness of the display 'will increase ' Second, [new content] Therefore, the purpose of this creation is to provide a === device that includes the sensing unit to control the system and automatically adjust the brightness of the screen according to the measured external unit. *(10) degrees Based on the above and other purposes, this creation proposes a flat-panel display with a full function, including a sensing unit and a display unit. The sensing unit is used to measure the external unit. Display unit (9) U single control = measurement result, 驴 单元 - unit brightness. County test early 兀 flat: = 乍: = example of the automatic brightness adjustment function of the ten sides, 4 not ☆ slave control unit included The one-to-sensing unit 'is used to select the brightness value according to the sensing unit=the brightness value cap., the result, the preset 6 M306· 2_ a flat display with automatic brightness adjustment function, According to the change of the brightness of the external environment, the brightness of the liquid crystal display can be brightened or dimmed in time, so that the user can easily interpret the functions on the screen of the liquid crystal display. β, Ρ is the above and other purposes, features and Advantages can be more obvious DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment will be described in detail with reference to the accompanying drawings. v. [Comprehensive Mode] FIG. 1 is a block diagram of a flat panel display having an automatic brightness adjustment function. In the example, the flat panel display is exemplified by a liquid crystal display, such as a portable liquid crystal display (a liquid crystal display, a palm-sized liquid crystal display, or a palm-sized video disc player, etc.), please refer to FIG. The sensing unit 100, the user interface 120, the control unit 140, and the display unit 16A are included. The control unit 140 is connected to the sensing unit 100 and the display unit 16A, and the user interface 12 is coupled to the control unit 140. The sensing unit 1 includes a light sensing component 102. The control unit 140 includes a control circuit 142, a driving circuit 143, and a temperature adjusting circuit 144. The display unit 16 includes a backlight module 162 and a display panel. 164. In this embodiment, the light sensing element 1〇2 in the sensing unit 100 can be used to sense the brightness of the outside world and generate a current ambient brightness value. After the control circuit 142 in the control unit 140 receives the ambient brightness value, the ring obtained by the upper/lower input is compared; When the control circuit M2 finds that the two are the same, it indicates that the ambient brightness has not changed, then the liquid crystal display is adjusted to be self-financing. Alternatively, the control circuit 142 compares the current ambient brightness value with the upper-order acquired state brightness value and finds that the two are different' but the difference between them is within a predetermined value. This situation indicates that the brightness of the surrounding environment of the liquid crystal display has changed, but the degree of this change is within an acceptable tolerance, and the brightness of the display unit does not need to be adjusted. The current ambient brightness value received by the right hitting pen path 142 is compared with the ambient brightness value obtained last time, and when the difference is greater than a predetermined value, the ambient brightness changes and exceeds the tolerable range. At this time, the control circuit 142 outputs a control signal to the brightness adjustment circuit 144. The brightness adjustment circuit 144 controls the brightness of the light source 162 to adjust the brightness of the source (e.g., the lamp). The control circuit is also transparent, connected to the drive circuit 143 of the control circuit 142, and the output-drive signal 'drives the display panel 164. In this way, when the degree of the outer casing rises, the control unit 140 adjusts the display unit 16〇, and the brightness of the backlight module 162 in the liquid crystal display is brightened; and vice versa, when the brightness of the external environment is lowered. When the sensing unit 100 measures ^, the control unit U0 will adjust the brightness of the backlight unit 162 in the display unit 16 (). In the above two cases, the H helper: the control unit 140 can also be coupled to the user interface 12〇. The user interface 12G adjusts the brightness of the backlight module 162 by providing the user with the financial function. When the user adjusts the brightness of the display unit 160 by using the user interface i2, the control unit 14 adjusts the brightness of the backlight module 162 according to the input of the control unit. In this way, the brightness of the liquid crystal display can also be adjusted according to the user's habits or preferences. Further, another embodiment is as follows. First, the light sensing element 102 in the sensing unit 100 senses the brightness of the outside world and produces a current ambient brightness value. After receiving the ambient brightness value, the control circuit 142 in the control unit 14 compares the current ambient brightness value with a plurality of preset reference brightness values, and obtains that the current ambient brightness value is located in the reference and the brightness value. Which interval is in it. Since each of the reference brightness values can be redefined with a corresponding preset brightness value, the control, path 142 can finally select which preset shell value the current ambient brightness value corresponds to. The control circuit 142 then outputs a control signal to the brightness adjustment circuit 144 based on the selected preset brightness value. The brightness adjustment circuit 144 adjusts the intensity of the light source (e.g., the lamp) in the backlight module 162 in accordance with the control signal. The control circuit 142 also drives the display panel 164 by outputting a drive signal through the drive circuit 143 connected to the control circuit 142 φ. 2A is a flow chart of a method for automatically adjusting the brightness of a liquid crystal plane display according to another preferred embodiment of the present invention, which can be applied to a flat liquid crystal display as illustrated in FIG. In this embodiment, the flat panel is exemplified by a liquid crystal display such as a palm-sized video disc player. Referring to FIG. 2A and FIG. 2A, firstly, the external Brahman is detected and the ambient brightness value is obtained (step S2〇2), and then the brightness of the flat display is adjusted according to the detection result (step S204). Step S202 is further in the form of M306668 '2006006 2081〇twf.doc/〇〇6 y, 洋田" 儿明: · When the liquid crystal display is activated, the light sensing element 102 starts, the brightness of the external environment is Step S210. At this time, the target environmental luminance value L1 can be obtained (step S220). The further details of step S204 are as follows: Step S23G is first performed, that is, the control circuit 142 compares the ambient luminance value u with the preset reference luminance value, and then determines the ambient luminance value L1 according to the result. The range of preset brightness values (step S24G). Finally, the brightness of the liquid crystal display is adjusted in accordance with the preset brightness value selected in step S24 (step S250). In addition, there is no limit to the number and size of the preset brightness value and the reference brightness value mentioned above, and can be adjusted as needed. In other words, the number and value of the preset brightness value and the reference brightness value can be preset before the product leaves the factory, or can be adjusted by the user through the user interface 12〇. Fig. 2B is a diagram showing a further explanation of steps S23 and S24 of Fig. 2A. In the present embodiment, the preset four reference luminance values are exemplified, however, the creation does not limit the number of reference luminance values. Please refer to FIG. 2B, where R1 R R4 represent preset reference brightness values. Therefore, >, I; • The interval below the reference brightness value Ri can be defined as the first pre-existing output value, and the interval between the reference brightness value R1 and the reference brightness value Μ ^^2 preset brightness value 'between The interval between the reference brightness value R2 and the reference brightness value is defined as the third preset brightness value, and the interval between the reference brightness value Rs and the second degree value R4 is defined as the fourth preset brightness value, which is greater than the interval of the form of the table = R4 Then defined as the fifth preset brightness value. After detecting the external J degree and obtaining the current ambient brightness value L1, the environment control value 142 can be compared with the preset parameter M306668 2006006 20810twf.doc/006 R1~R4 (steps). S230) to determine which interval L1 belongs to. Assuming that L1 is greater than the reference luminance value R2 but less than the reference luminance value R3, the interval corresponds to the third predetermined luminance value, and a suitable third predetermined luminance value is selected (step S240). In this embodiment, R4 >R3>R2>R1 is taken as an example, and the fifth party has the highest party value, and then decreases to the first preset brightness value. The user can adjust the first-level brightness value to the fifth thief brightness button according to personal preference. ^ County Figure 3 illustrates an automatic method for brightness of a flat panel display in accordance with another preferred embodiment of the present invention, which can be applied, for example, to a flat panel display as illustrated. In this embodiment, the flat panel display is exemplified by a liquid crystal display such as a palm-sized video disc player. When the crystal display is activated and the automatic adjustment method starts, it is first determined whether the user manually adjusts the liquid crystal display. If the user adjusts the liquid crystal: ^ ^ ', the brightness of the liquid crystal display is adjusted according to the user's input, and the adjustment mode is entered (step S219).妓When the user does not manually adjust or adjust the liquid crystal display, the light sensing component 102 is opened, and the brightness of the external environment is the step coffee. At this time, the current ambient illuminance value u can be obtained by the step s2 〇 3 ' control circuit 142. The step S2G5' control circuit 142 calculates the result of determining the difference between the brightness value L1 currently obtained and the environmental brightness value u obtained in the previous time = step S207. When u and l ΐίίΓ rhyme values, the generation of the correction ring does not change the brightness; - although there are changes, but within the acceptable range. Therefore, the brightness of the liquid crystal display remains unchanged, that is, what is stated in step s. The above value N is a pre-settable listening value, preferably n is greater than 0. However, when the difference between U and L2 is greater than or equal to the preset value, the S2U is tilted at this time, and the new is Xiaowu and L2 _ size. When the target is taken, the ambient brightness value L1 is smaller than the ambient brightness value obtained by the previous time. At this time, the present creation lowers the brightness of the liquid crystal display as described in step S213. ... Conversely, when the currently obtained ambient brightness value L1 is greater than the last taken, ambient brightness value L2, it means that the external environment is bright. At this point, step S215 is performed, that is, the brightness of the liquid crystal display is raised to make the contrast between the environmental shell and the brightness of the liquid crystal display moderate. After the above-mentioned = step S209, S213 or S215, the process returns to step S217. In order to explain that the creation can achieve the above-mentioned effects, the actual results are recorded and the results are recorded. The measured results are as follows: · Measurement environment · Indoor measurement tools · · LCD Color Analyser 7 inch LCD panel of the upper video disc player... —-- Brothers redundancy (cd/m) _ panel brightness (cd/m2)
12 M306668 . 2006006 20810twf.d〇c/006 由以上貫驗數據，可以得知本創作確實能依照不同的 環境亮度，相對地調整面板亮度，以缓和環境與面板兩者 之間亮度的對比，避免兩者間的對比過大。12 M306668 . 2006006 20810twf.d〇c/006 From the above test data, it can be known that the creation can actually adjust the brightness of the panel according to different ambient brightness to ease the contrast between the environment and the panel to avoid The contrast between the two is too large.
綜^所述，由於本創作之具有自動亮度調整功能之平 面顯不$具備依外界的環境亮度來膽液晶顯示器的亮度 ㈣能。因此，在外界環境的亮度變暗時，液晶顯示器的 會自動降低。反之，當外界環境變亮時，液晶顯示器 的^度會跟著調高。gj此在週遭的亮度改請，本創作能 面板’以緩和環境與面板間兩者的對比度 P 士 ^乍已以較佳實施例揭露如上，然其並非用以 二2何所屬技術領域中具有通常知識者，在不 之精，範園内，當可作些許之更動與潤飾， 為H 當視後附之申請專利範圍所界定者According to the above, the flat surface of the creation with automatic brightness adjustment function is not suitable for the brightness of the liquid crystal display according to the ambient brightness of the environment (4). Therefore, when the brightness of the external environment becomes dark, the liquid crystal display automatically decreases. Conversely, when the external environment becomes brighter, the LCD will be turned up. Gj this brightness in the surrounding, please create a panel to ease the contrast between the environment and the panel P. The above has been disclosed in the preferred embodiment, but it is not used in the technical field of Usually, the knowledge person, in the inadequacy, in the Fan Park, can make some changes and refinements, as defined by the scope of the patent application attached to H.
【圖式簡單說明】 圖1繪不為一種 的方塊圖。 具有自動亮度調整功能之平面顯示[Simple description of the drawing] Figure 1 is not a block diagram of one kind. Flat display with automatic brightness adjustment
曰曰 圖2A繪不了依照 顯示器亮度的自動調整 圖2B繪示了圖2a中 一步說明之示意圖。 本創作之一較佳實施例的一種液 方法流程圖。 關於步驟S230與步驟S240的進 13 M306668 208„/006 圖3繪示了依照本創作之另一較佳實施例的一種液晶 顯示器亮度的自動調整方法流程圖。 【主要元件符號說明】 100 :感測單元 102 :光感測元件 120 :使用者介面 140 ··控制單元 ® 142 :控制電路 143 :驅動電路 144 :亮度調整電路 160 ··顯示單元 162 :背光模組 164 :顯示面板 5202 :偵測外部環境亮度並取得環境亮度值 S204 :依據偵測結果調整平面顯示器亮度 • S210 :偵測外界環境的亮度 S220 :取得一環境亮度值L1 S230 :將L1與參考亮度值比較 S240 :選擇預設亮度 S250 :調整液晶顯示器的亮度 R1〜R4 :參考亮度值 S201 :偵測外界環境之亮度 5203 :取得一環境亮度值L1 14 M306668 2〇8ΐ〇_/〇〇6 S205 ··計算目前取得之環境亮度值LI與上一次取得 之環境亮度值L2兩者之差 S207 :判斷計算結果 S209 :維持液晶顯示器的亮度 S211 :比較L1與L2 S213 :降低液晶顯示器之亮度 S215 :調高液晶顯示器之亮度 S217 :判斷使用者是否手動調整 S219 :進入手動調整模式曰曰 Figure 2A shows an automatic adjustment according to the brightness of the display. Figure 2B shows a schematic diagram of one step in Figure 2a. A liquid method flow diagram of one preferred embodiment of the present invention. Referring to step S230 and step S240, FIG. 3 is a flow chart showing a method for automatically adjusting the brightness of the liquid crystal display according to another preferred embodiment of the present invention. Measuring unit 102: light sensing element 120: user interface 140 · · control unit ® 142 : control circuit 143 : driving circuit 144 : brightness adjusting circuit 160 · · display unit 162 : backlight module 164 : display panel 5202 : detection External ambient brightness and ambient brightness value S204: Adjust the brightness of the flat display according to the detection result • S210: Detect the brightness of the external environment S220: Obtain an ambient brightness value L1 S230: Compare L1 with the reference brightness value S240: Select preset brightness S250: Adjust the brightness of the LCD display R1~R4: Reference brightness value S201: Detect the brightness of the external environment 5203: Obtain an ambient brightness value L1 14 M306668 2〇8ΐ〇_/〇〇6 S205 ··Calculate the current ambient brightness The difference between the value LI and the last obtained ambient luminance value L2: S207: Judgment calculation result S209: Maintaining the brightness of the liquid crystal display S211: Comparing L1 and L2 S213: decreasing Crystal display brightness of S215: S217 to increase the brightness of a liquid crystal display: determining whether the user manually adjust S219: enter manual adjustment mode
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