200939012 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種可攜式電子裝置及其顯示控制方 法’特別是有關於一種依據電子裝置之轴向與重力方向之 夹角角度以關閉背光光源之可攜式電子裝置及其顯示控制 方法。 【先前技術】 〇 ^ • 目則’電子產業蓬勃發展’隨著各種計算機所衍生 之高科技產品、行動通訊產品及通信網路技術之進步， 令許多高科技產業、行動通訊產品之體積越來越小，功 月b齊全且價格日益低廉，而受到越來越多人之喜愛。尤 其是最常見之手機與我們生活息息相關，行動通訊產品 之廣泛應用，縮短了人與人之間在時間上與空間上的距 離。由於可攜式裝置大多使用電池，所以如何以有限的 電力提供足夠長的操作時間是一項亟待解決的問題。在 β :機的元件中’顯示器之功率消耗占了極大的比例，為 節省顯不器之電源，已有習知技藝針對其耗電問題提出 解決的方法。 請參考第1圖所示’其係為習知技藝之一種行動電 子裝置之背光控制方法步驟流程圖。圖中，行動電子裝 置之背光控制方法，係以定時關閉之方式，方法包括下 列步驟： 步驟11:於液晶顯示面板上使用一背光模組以提供 5 200939012 一光源，便於讓使用者於光線昏暗或不足處瀏覽液晶顯 示面板之影像，例如，時間、曰期、通訊品質或電量狀 況； 步驟12:設定一計時參數及一門檻值，並開始計數； 步驟13 :當計時參數大於或等於門播值時，則關閉 背光模組；以及 〇 〇 步驟14 :偵測一按鍵觸發訊號，且當按鍵觸發訊號 出現時，重置（reset)計時參數，並啟動背光模組。 然而’習知之背光控制方法雖可達到省電的功效， 惟使用者需事先設定背光功能關閉時間，且於使用期 間，若背光功能太早關閉時，使用者必須手動去開 光功能，而造成操作上的不便，若背光功能太 則會造成不必要的電力消耗。因此，如何讓可攜式電子 裝置避免不必要的耗電是亟待解決的問題。 諸如此類的設計，例如台灣專利號M244674所述， 『了種手機接電話可自動省電之裝置』，其主要係於手機 ^受話部-側表面上設有感卿（例如，靜電感測器）， 感測器與手機之控制電路相連接，當使用者接聽手機， ，其皮膚接觸感測器時，感測器將傳送— 制電路，俾_電路操㈣狀f光燈泡為停止工^ off)狀態’如此，手機於使用者聽電 ΐ機:r可減少不必要之電源的消耗。然而= 自動省電之裝置雖可達到省電的功效， 使用者於使_間，若未使用於通話功能上例如， 200939012 用簡訊功能錢覽網頁等，若手機使用完畢，手機仍需 依據所叹定之背光功能關閉時間到才會關閉。因此，仍 會造成不必要的電力隸，就^體而t，本#明更具有 實用性及省電功效。 Ο ❹ 又例如台灣專利號1236654所述，『依據使用者習慣 自動關_示11背光功能时法』，其係依照使用者的使 用習慣，執行自動關閉顯示器之背光功能方式。此方法， η 己錄並分析上次使用者背光功能之時間間隔值所 、二之'料，使用統計學之原理求得與使用相應合之背 二=時間，以此背光平均開啟時間為依據，執行 關才1责光功能的動作，藉以達到省電之功效。然而，使 =係r需求而使用手機’有時使用時間過長或過短， 對於以名錄並分析使用者的使用習慣來作為 基於======題種= 顯示控制方法’以作為改善上述缺點之;現 【發明内容】 有鑑於此’本發明之—目的就是在提供 電子裝置及其顯示控制方法，以當使用 式 動地關閉螢幕而避免不需要的電量消耗。用時可自 7 200939012 本發明之另一目的，係提供一種可攜式電子裝置及 其顯不控制方法’藉由偵測重力方向來有效地控制顯示 模組的顯示狀態。 根據本發明之目的，提出一種可攜式電子裝置。此 裝置係包含一顯示模組、一電路板、一重力感測元件及 一處理模組。顯示模組具有至少一顯示狀態，重力感測 70件係設置於電路板上，且重力感測元件係依據一重力200939012 IX. Description of the Invention: [Technical Field] The present invention relates to a portable electronic device and a display control method thereof, particularly relating to an angle between an axial direction of an electronic device and a gravity direction to be closed. Portable electronic device with backlight source and display control method thereof. [Prior Art] 〇^ • The goal of 'electronic industry booming' With the advancement of high-tech products, mobile communication products and communication network technologies derived from various computers, the volume of many high-tech industries and mobile communication products has become more and more The smaller the power, the more complete the month and the lower the price, and more and more people love it. In particular, the most common mobile phones are closely related to our lives, and the wide application of mobile communication products has shortened the time and space between people. Since most portable devices use batteries, how to provide sufficient operation time with limited power is an urgent problem to be solved. In the β: machine components, the power consumption of the display accounts for a large proportion. In order to save the power of the display device, the conventional art has proposed a solution to the power consumption problem. Please refer to FIG. 1 for a flow chart of the backlight control method of a mobile electronic device of the prior art. In the figure, the backlight control method of the mobile electronic device is in the form of timing closure. The method includes the following steps: Step 11: using a backlight module on the liquid crystal display panel to provide a light source of 200939012, which is convenient for the user to dim light. Or insufficient view of the image of the LCD panel, for example, time, cycle, communication quality or power status; Step 12: Set a timing parameter and a threshold, and start counting; Step 13: When the timing parameter is greater than or equal to the portal When the value is set, the backlight module is turned off; and step 14: detecting a button trigger signal, and when the button trigger signal appears, resetting the timing parameter and starting the backlight module. However, the conventional backlight control method can achieve the power saving effect, but the user needs to set the backlight function off time in advance, and during the use, if the backlight function is turned off too early, the user must manually turn on the light function, resulting in operation. Inconvenience, if the backlight function is too much, it will cause unnecessary power consumption. Therefore, how to avoid unnecessary power consumption of the portable electronic device is an urgent problem to be solved. Such a design, for example, as described in Taiwan Patent No. M244674, "a device for automatically saving power when a mobile phone is connected to a telephone" is mainly provided with a sensory side (for example, an electrostatic sensor) on the side surface of the handset. The sensor is connected to the control circuit of the mobile phone. When the user answers the mobile phone and the skin contacts the sensor, the sensor will transmit the circuit, and the circuit will stop (off). State of the state, the mobile phone listens to the user: r can reduce unnecessary power consumption. However, although the automatic power saving device can achieve the power saving effect, if the user does not use the call function, for example, 200939012 uses the short message function to view the webpage, etc., if the mobile phone is used, the mobile phone still needs to be based on the mobile phone. The backlight function of the sigh will be turned off when it is turned off. Therefore, it will still cause unnecessary power, and it will be more practical and power-saving. Ο ❹ For example, as described in Taiwan Patent No. 1236654, "Automatically turn off the backlight function according to the user's habits", which is based on the user's usage habits, and performs a backlight function that automatically turns off the display. In this method, η has recorded and analyzed the time interval value of the last user's backlight function, and the second material, using the principle of statistics to find and use the corresponding back two = time, based on the average backlight opening time. To perform the action of shutting down the blame function, in order to achieve the power saving effect. However, using the mobile phone for the demand of the system is sometimes too long or too short, for the use of the directory and analysis of the user's usage habits as based on ====== in question = display control method' as an improvement SUMMARY OF THE INVENTION The present invention is directed to providing an electronic device and a display control method thereof for avoiding unnecessary power consumption when the screen is dynamically closed using a mode. Another object of the present invention is to provide a portable electronic device and a display control method thereof for effectively controlling the display state of the display module by detecting the direction of gravity. According to the purpose of the present invention, a portable electronic device is proposed. The device comprises a display module, a circuit board, a gravity sensing component and a processing module. The display module has at least one display state, 70 pieces of gravity sensing are disposed on the circuit board, and the gravity sensing component is based on a gravity
❹ 以產生一感測訊號，處理模組係依據感測訊號以控制顯 示模組之顯示狀態。 其中重力感測元件係感測電路板之一傾斜角度， 其係為電路板之一軸向與重力方向之夾角角度，此軸向 係為電路板之一長軸方向。 其中，處理模組將傾斜角度與一預設角度範圍進行 比對，若傾斜角度位於預設角度範圍中，則處理模組控 制顯示模組至一，，關閉，，狀態。 此外，本發明更提出一種可攜式電子裝置之顯示控 制方法，在此顯示控制方法中，先設定一預設角度範圍， 接著，偵測可攜式電子裝置之一轴向與重力方向之夾 角。繼之，比對此夾角及此預設角度範圍，並根據比 結果以控制顯示模組之顯示狀態。 之電路板之一長 ’則觸發顯示模 其中，此軸向可為可攜式電子裝置 轴方向。而當夾角位於預設角度範圍中 組進入一，，關閉”狀態。 承上所述，因依本發明之可攜式電子裝置及其顯示 8 200939012 控制方法，具有以下優點： (1) 當使用者不用可攜式電子裝置時，大多將可攜式 電子裝置擺置或懸吊於口袋或腰間，此時可攜式電子裝 置之傾斜狀態與正常使用之傾斜狀態不同，所以藉由感 測可攜式電子裝置之軸向與重力方向之差異以自動關閉 背光光源，可避免不必要的螢幕耗電。 (2) 藉由感測電路板之轴向與重力方向之差異以自 〇動_#絲源，職用者不需作繁_背光光源關閉 ^ 時間設定動作，可提高使用便利性。 红為使貴審查委員對本發明之技術特徵及所達到 之功效有更進一步之瞭解與認識，謹佐以較佳之實施例 及配合詳細之說明如後。 【實施方式】 以下將參照相關圖式，說明依本發明較佳實施例之 Q 可攜式電子裝置及其顯示控制方法，為使便於理解，下 述實施例中之相同元件係以相同之符號標示來說明。 請參閱第2A圖，其係為本發明之可攜式電子裝置之 方塊示意圖。圖中，可攜式電子裝置20包含一顯示模組 21、一電路板22、一重力感測元件23及一處理模組24。 顯示模組21具有至少一顯示狀態211，重力感測元件23 係設置於電路板22上，且重力感測元件23係依據一重 力以產生一感測訊號231。例如，重力感測元件23可感 測電路板22之一傾斜角度作為感測訊號231，而傾斜角 9 200939012 路板22之軸向與重力方向之夾角角度。電路板 =接可設為以一長轴方向為測定軸，電路板22之轴 向係為可攜式電子裝置20之外觀之一長軸方向。 ❺ ❾ T處理模組24係依據感測訊號231以控制顯示模組 24之顯不狀態’例如，處理模組24可將傾斜角度與 ，角度範圍進行比對，若傾斜角度位於預設角度範圍 中，則處理模組控制顯示模組關閉，以達到省電之功效。 其中，此預設角度範圍即為使用者不用可攜式電子置 20時’可攜式電子裝置20被擺置的傾斜角度，例如，使 用者將可攜式電子裝置20放置在桌上，其軸向與重力方 向之夾角約為90度，則預設角度範圍可設定為肋度〜丨⑼ 度。如果處理模組24比對後確認可攜式電子裝置2〇之 傾斜角度在80度〜1〇〇度之間，則可以判斷可攜式電子裝 置20被水平擺放著，表示使时目前並未使用，處理模 組24便關閉顯示模組21以達到省電的功效。同理，如 果使用者習慣將可攜式電子裝置2〇懸掛著，則可以設定 對應懸掛狀態的預設角度範圍，則可攜式電子裝置2〇被 懸掛後顯示模組便自動關閉。 其中，顯不模組21係包含一顯示面板及一背光模 組。顯示面板係用以顯示一影像，背光模組係用以提供 顯示面板之一背光光源。顯示面板可為一陰極射線管 (Cathode Ray Tube，CRT)螢幕或一液晶顯示螢幕（Uquid Crystal Display，LCD )等。 接續，請參閱第2B圖，其係為本發明之可攜式電子 200939012 裝置之實施例之方塊示意圖。圖中’可攜式電子装置2〇 包含一顯示模組21、一電路板22、一重力感測元件23、 一處理模組24及一儲存模組25。其中，儲存模組25係 用以儲存一預設角度範圍251，其中，儲存模組25可為 一硬碟驅動裝置（HDD)、一快閃記憶體或一儲存體記憶體 (storage memory)等。顯示模組21具有至少一顯示狀態 211 ’重力感測元件23係設置於電路板22上，且重力^ 測元件23係感測電路板22之一軸向與一重力方向之爽 〇 角角度221。處理模組24係將電路板22傾斜角度之夾角 角度221與預設角度範圍251進行比對，若傾斜角度221 位於預設角度範圍251中’則處理模組24控制顯示模組 21之背光模組關閉，以避免不必要的電量消耗。 請續參閲第3A圖及第3B圖，係為本發明之可攜式 電子裝置之較佳實施例之示意圖。為便於内容敘述，部 分元件說明請參閱第2A圖及第2B圖。可攜式電子裝置 為一行動電話30。在第3A圖中，行動電話3〇包含一電 〇 路板22、一重力感測元件23、一處理模組24、一液晶顯 示螢幕31及一背光模纟且32。其中，液晶顯示螢幕31係 用以顯示一影像，背光模組32係用以提供液晶顯示螢幕 31之一背光光源。重力感測元件23係設置於電路板22 上，重力感測元件23可感測電路板22之一傾斜角度’ 而傾斜角度係為電路板22之一軸向與一重力方向之夹角 角度。電路板22之軸向可設為以一長軸方向為測定軸（或 為X軸），而重力方向可為一重力軸33。當重力感測元件 23感測X轴與重力轴為平行（或夾角角度為〇。或18〇。角 200939012 度）時’極為可能使用者正處於使用行動電話3〇狀態，因 此’背光模組32會依據使用者之使用狀態持續提供液晶 顯示螢幕31之一背光光源。 在第3B圖中’當使用者不用行動電話3〇時，大多 將行動電話30擺置或懸吊於口袋、腰間或脖子上，此時 行動電話30之傾斜角度與正常使用之傾斜角度不同。因 此 ^重力感測元件23感測電路板之X軸與重力軸33 之夾角角度不為〇。或180。角度時，處理模組24係將傾 〇 斜角度（例如，傾斜35。角度）與一預設角度範圍（例如，傾 斜30°至垂直90。角度）進行比對，若傾斜角度位於預設角 度範圍中’則處理模組24控制背光模組32關閉背光光 源’藉此’可解決使用者於未使用行動電話3〇狀態下， 背光模組32持續提供液晶顯示螢幕31之背光光源而造 成不必要的耗電，以達到省電的功效。 請參閱第4圖’其係為本發明之顯示控制方法之步 驟流程圖。此顯示控制方法適用於一具有一顯示模組之 © 可攜式電子裝置，此方法包含下列步驟： 步驟S41 :設定一預設角度範圍，此預設角度範圍係 與使用者不用可攜式電子裝置時擺放可攜式電子裝置的 方式有關； 步驟S42 :偵測可攜式電子裝置之一抽向與重力方向 之夾角，其中’此步驟可藉由在可攜式電子裝置中設置 重力感測元件來實現； 步驟S43 :比對夾角及預設角度範圍；以及 12 200939012 步驟S44:當夾角位於預設角度範圍中，則關閉顯示 模組。例如’若預設角度範圍係設定為8〇度〜1〇〇度，表 示使用者不使用時會將可攜式電子裝置水平擺放。如果 比對結果顯示夾角為90度而介於預設角度範圍’可判斷 可攜式電子裝置目前未被使用，所以可關閉顯示模組以 避免不必要的電量消耗。 承上所述’習知之背光控制方法係使用於液晶顯示 器上’並透過使用者需事先設定背光功能關閉時間來達 〇 到省電的功效。其省電方法係由使用者事先設定一時間 門檻值，於時間門檻值内若沒發生任何背光功能開啟事 件，例如，使用者操作鍵盤或觸控螢幕，則關閉背光功 能。此種省電方法會造的缺點是，由於可設定的背光功 能關閉時間的選擇項固定’缺乏彈性空間而造成使用者 選擇性少，無法符合使用者的需求，也因為關閉時間的 選擇項之間的差距無法微調的關係，致使背光功能太快 或太慢關’而使用者需動手㈣關背光功能而造成操 ❹作上的不便，以及造成不必要的電力消耗。 本發明研究了大部分使用者之手機使用習慣，當使 用者不用手機時’大多將手機擺置或懸吊於口袋或腰 間，此時手機之傾斜狀態與正常使用之傾斜狀態不同， 因此’本發明之顯示控制方法係設置—重力感測元件於 電路板上’重力感測疋件可以感測電路板之傾斜角度變 當傾斜角度位於—預設角度範圍中，則自動關閉液 曰曰顯不之背光光源。由此可得知，本發明不僅增加背 光功能關閉時間的靈活性’還減少了使用者需手動操作 13 200939012 的不便性，除了減少不必要的電力消耗，對於使用者操 作的便利性也加以考量是本發明的其一優點。 再者，本實施例與台灣專利號1236654之差異在於台 灣專利號Ι2366Μ所叙依據使用慣自㈣閉顯示 器背光功能的方法，係藉由背光功能驅動程式紀錄並分 析使用者的使用習慣，自動調整背光功能的關閉時間， 以此作為下次關閉背光功能的時間依據。本發明係分析 使用者的使用習慣’藉由偵測重力方向以有效地控制顯 Ο不器之背光光源自動地關閉動作。由此可得知，本發明 不僅可順應當時使用者的使用狀況，以提供背光光源或 及時自動關閉背光錢’更能達到人性化的料。此設 計亦是本發明考量之其一優點。 以上所述僅為舉例性，而非為限制性者。任何未脫 離本發明之精神與範疇，而對其進行之等效修改或變 更，均應包含於後附之申請專利範圍中。 ® 【圖式簡單說明】 第1圖係、為習知之行動電子裝置之背光控制方法步驟流 程圖； 第2A圖係為本發明之可攜式電子裝置之方塊示意圖； 第2B圖係為本發明之可攜式電子裝置之實施例之方塊 示意圖； 第3A圖及第3B圖係為本發明之可攜式電子裝置之實施 例之示意圖；以及 200939012 第4圖係為本發明之顯示控制方法之步驟流程圖。 【主要元件符號說明】 11〜14 :步驟流程圖； 20 :可攜式電子裝置； 21 :顯示模組； 211 :顯示狀態； Ο 22 :電路板； 221 :夾角角度； 23 :重力感測元件； 231 :感測訊號； 24 :處理模組； 25 ··儲存模組； 251 :預設角度範圍； 30 ： 行動電話； 31 ： 液晶顯不榮幕， 32 ： 背光模組； 33 ： 重力轴；以及 S41〜S44 :步驟流程圖。 15❹ To generate a sensing signal, the processing module controls the display state of the display module according to the sensing signal. The gravity sensing component is an angle of inclination of one of the sensing circuit boards, which is an angle between an axial direction of the circuit board and a direction of gravity, and the axial direction is a long axis direction of the circuit board. The processing module compares the tilt angle with a preset angle range. If the tilt angle is within the preset angle range, the processing module controls the display module to a state, a close state, and a state. In addition, the present invention further provides a display control method for a portable electronic device. In the display control method, a preset angle range is first set, and then an angle between an axial direction of the portable electronic device and a gravity direction is detected. . Then, the display angle of the display module is controlled according to the angle between the angle and the preset angle range. One of the board's lengths triggers the display mode, which can be the axis direction of the portable electronic device. When the angle is within the preset angle range, the group enters one, and the "closed" state. According to the present invention, the portable electronic device and the display method thereof are provided with the following advantages: (1) When used When the portable electronic device is not used, most of the portable electronic device is placed or suspended in the pocket or the waist. At this time, the tilt state of the portable electronic device is different from the tilt state of the normal use, so by sensing The difference between the axial direction and the gravity direction of the portable electronic device is to automatically turn off the backlight source to avoid unnecessary power consumption of the screen. (2) Self-motion by sensing the difference between the axial direction of the circuit board and the direction of gravity _ #丝源, the user does not need to make trouble _ backlight source off ^ time setting action, can improve the convenience of use. Red in order to enable your review board to have a better understanding and understanding of the technical features of the invention and the effects achieved, The preferred embodiment and the detailed description are as follows. [Embodiment] Hereinafter, a Q portable electronic device and a display thereof according to a preferred embodiment of the present invention will be described with reference to related drawings. For the sake of understanding, the same components in the following embodiments are denoted by the same reference numerals. Please refer to FIG. 2A, which is a block diagram of the portable electronic device of the present invention. The portable electronic device 20 includes a display module 21, a circuit board 22, a gravity sensing component 23, and a processing module 24. The display module 21 has at least one display state 211, and the gravity sensing component 23 is disposed on the circuit. On the board 22, the gravity sensing element 23 generates a sensing signal 231 according to a gravity. For example, the gravity sensing element 23 can sense the tilt angle of one of the circuit boards 22 as the sensing signal 231, and the tilt angle 9 200939012 The angle between the axial direction of the road plate 22 and the direction of gravity. The circuit board = can be set to take a long axis direction as the measuring axis, and the axial direction of the circuit board 22 is one of the appearances of the portable electronic device 20 The processing module 24 controls the display module 24 according to the sensing signal 231. For example, the processing module 24 can compare the tilt angle with the angle range, if the tilt angle is at the preset angle. In the scope, The processing module controls the display module to be turned off to achieve the power saving effect. The preset angle range is the tilt angle of the portable electronic device 20 when the user does not use the portable electronic device 20, for example, The user places the portable electronic device 20 on the table, and the angle between the axial direction and the direction of gravity is about 90 degrees, and the preset angle range can be set to rib degrees ~ 丨 (9) degrees. If the processing module 24 is aligned After confirming that the tilt angle of the portable electronic device 2 is between 80 degrees and 1 degree, it can be determined that the portable electronic device 20 is horizontally placed, indicating that the time is not currently used, and the processing module 24 is not used. The display module 21 is turned off to save power. Similarly, if the user is accustomed to suspending the portable electronic device 2, the preset angle range corresponding to the suspended state can be set, and the portable electronic device 2 When the 〇 is hung, the display module will automatically turn off. The display module 21 includes a display panel and a backlight module. The display panel is used to display an image, and the backlight module is used to provide a backlight source of the display panel. The display panel can be a cathode ray tube (CRT) screen or a liquid crystal display (LCD). Next, please refer to FIG. 2B, which is a block diagram of an embodiment of the portable electronic 200939012 device of the present invention. The portable electronic device 2A includes a display module 21, a circuit board 22, a gravity sensing component 23, a processing module 24, and a storage module 25. The storage module 25 is configured to store a predetermined range of angles 251. The storage module 25 can be a hard disk drive (HDD), a flash memory, or a storage memory. . The display module 21 has at least one display state 211 'the gravity sensing element 23 is disposed on the circuit board 22, and the gravity measuring element 23 senses the angle of the axis of the circuit board 22 with a direction of gravity 221 . The processing module 24 compares the angle 221 of the tilt angle of the circuit board 22 with the preset angle range 251. If the tilt angle 221 is in the preset angle range 251, the processing module 24 controls the backlight module of the display module 21. Groups are turned off to avoid unnecessary power consumption. Please refer to FIG. 3A and FIG. 3B, which are schematic diagrams of a preferred embodiment of the portable electronic device of the present invention. For the sake of convenience, please refer to Figures 2A and 2B for a description of some components. The portable electronic device is a mobile phone 30. In Fig. 3A, the mobile phone 3 includes an electric circuit board 22, a gravity sensing element 23, a processing module 24, a liquid crystal display screen 31, and a backlight module 32. The liquid crystal display screen 31 is used to display an image, and the backlight module 32 is used to provide a backlight source of the liquid crystal display screen 31. The gravity sensing element 23 is disposed on the circuit board 22, and the gravity sensing element 23 senses one of the tilt angles of the circuit board 22, and the tilt angle is an angle between an axial direction of the circuit board 22 and a gravity direction. The axial direction of the circuit board 22 can be set to a long axis direction as an axis of measurement (or an X axis), and the direction of gravity can be a gravity axis 33. When the gravity sensing element 23 senses that the X axis is parallel to the gravity axis (or the angle of the angle is 〇 or 18 〇. angle 200939012 degrees), it is highly probable that the user is in the state of using the mobile phone 3 ,, thus the backlight module 32 will continuously provide a backlight source of the liquid crystal display screen 31 according to the state of use of the user. In Fig. 3B, when the user does not use the mobile phone 3, most of the mobile phone 30 is placed or suspended in the pocket, the waist or the neck, and the tilt angle of the mobile phone 30 is different from the tilt angle of the normal use. . Therefore, the angle between the X-axis of the gravity sensing element 23 sensing the circuit board and the gravity axis 33 is not 〇. Or 180. At an angle, the processing module 24 compares the tilt angle (eg, tilt 35. angle) with a predetermined angle range (eg, tilt 30° to vertical 90. angle) if the tilt angle is at a preset angle In the range, the processing module 24 controls the backlight module 32 to turn off the backlight source. This can solve the problem that the backlight module 32 continuously supplies the backlight source of the liquid crystal display screen 31 without using the mobile phone. Necessary power consumption to achieve power saving. Please refer to Fig. 4, which is a flow chart of the display control method of the present invention. The display control method is applicable to a portable electronic device having a display module. The method includes the following steps: Step S41: setting a preset angle range, and the preset angle range is not portable to the user. Step S42: detecting the angle between one of the portable electronic devices and the direction of gravity, wherein the step of setting the sense of gravity in the portable electronic device The measuring component is implemented; step S43: comparing the angle and the preset angle range; and 12 200939012 step S44: when the angle is in the preset angle range, the display module is turned off. For example, if the preset angle range is set to 8 degrees to 1 degree, it means that the portable electronic device is placed horizontally when the user does not use it. If the comparison result shows that the angle is 90 degrees and the preset angle range is 'determined', the portable electronic device is not currently used, so the display module can be turned off to avoid unnecessary power consumption. According to the above, the conventional backlight control method is used on a liquid crystal display, and the user needs to set the backlight function off time in advance to achieve power saving. The power saving method is that the user sets a time threshold in advance, and if no backlight function is turned on within the time threshold, for example, when the user operates the keyboard or the touch screen, the backlight function is turned off. The disadvantage of this power saving method is that the option of setting the backlight function off time is fixed, 'the lack of elastic space, resulting in less user selectivity, unable to meet the user's needs, and also because of the option of closing time. The gap between the gaps cannot be fine-tuned, causing the backlight function to be too fast or too slow. 'The user needs to do it (4) Turn off the backlight function, causing inconvenience in operation and causing unnecessary power consumption. The invention studies the mobile phone usage habits of most users. When the user does not use the mobile phone, most of the mobile phones are placed or suspended in the pocket or the waist. At this time, the tilt state of the mobile phone is different from the tilt state of the normal use, so The display control method of the present invention is provided that the gravity sensing component is on the circuit board. The gravity sensing component can sense the tilt angle of the circuit board. When the tilt angle is in the preset angle range, the liquid shutoff is automatically turned off. Not a backlight source. It can be seen that the present invention not only increases the flexibility of the backlight function closing time, but also reduces the inconvenience of the user to manually operate the 13 200939012, in addition to reducing unnecessary power consumption, and considering the convenience of the user operation. It is an advantage of the present invention. Furthermore, the difference between this embodiment and Taiwan Patent No. 1236654 is that the method of using the conventional (four) closed display backlight function according to the Taiwan Patent No. 2366 is to automatically record by using the backlight function driver to record and analyze the user's usage habits. The off time of the backlight function is used as the time base for turning off the backlight function next time. The present invention analyzes the user's usage habits' automatically shuts down the action by detecting the direction of gravity to effectively control the backlight source of the display. It can be seen from the above that the present invention can not only provide a backlight source, but also automatically turn off the backlight in time to meet the user's use condition. This design is also an advantage of the present invention. The above is intended to be illustrative only and not limiting. Any changes or modifications to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. ® [Simplified Schematic] FIG. 1 is a flow chart of a backlight control method for a conventional mobile electronic device; FIG. 2A is a block diagram of a portable electronic device of the present invention; FIG. 2B is a present invention Block diagram of an embodiment of a portable electronic device; FIGS. 3A and 3B are schematic views of an embodiment of a portable electronic device of the present invention; and 200939012, FIG. 4 is a display control method of the present invention Step flow chart. [Main component symbol description] 11~14: Step flow chart; 20: Portable electronic device; 21: Display module; 211: Display state; Ο 22: Circuit board; 221: Angle of angle; 23: Gravity sensing component 231: sensing signal; 24: processing module; 25 ··storage module; 251: preset angle range; 30: mobile phone; 31: LCD display, 32: backlight module; 33: gravity axis ; and S41~S44: Step flow chart. 15