521231 A7 —-------- 五、發明說明（/ ) 本發明係關於一種液晶顯示器之數位啟動控制方法及 裝置，尤指一種可精確控制液晶顯示器多組電源依序開關 以順利完成開關機之控制方法及裝置。 由於液晶顯示器的造價/售價均高，早先傳統顯示器 業者預料液晶顯示器幾年内很難取代陰極射線管式顯示器 ，主要原因在於液晶顯示器依賴外來技術且良品率一直無 去有效提升，故成本尚而在售價上一直無法大幅調降。但 ，電子科技業界驚人之處即在其高效率的研發能力，因而 液晶顯示器在製造技術上亦有所突破，並可有效提升其良 品率，目前14、15吋的液晶顯示器在售價上已大幅調降 ’因此短期内液晶顯示器無法取代射線管式顧示器之預言 顯已不攻自破。 事實上，液晶顯示器嬌貴的原因不僅僅在製程技術上 其使用的電源規則與控制方式均較傳統顯示器複雜許多 ’例如液晶顯示器係由多組不同規則的電源供電（如 +3· 3V、+3· 45V、+9. 2V、-6V、+18V 等），且多組電源必 須依照一定的順序依序開關，始能正常開機或關機，當開 關順序錯誤，即無法順利開機或關機。 傳統藉以令液晶顯示器多組電源依序開關的技術係採 類比方式，其設計原理大致如第五圖所示： 其開機時，係先打開第一組電源Va後，令第一組類比 式比較器U1輸入端的電容ci開啟充電，以形成延遲，俟 充電至輸入電壓大於參考電壓VrefA時，第一組比較器耵 輸出信號打開第二組電源VrefB ;並使第二組比較器U2輸入 3 .J . --------^-----：----線. (請先閱讀背面之注意事項再填寫本頁) t浪尺度適用中國國家標準疋NS)A4規格咖χ挪 ） 五、發明說明（义） 端上的電容C2充電，俟輸入電壓大於參考電壓VrefB時， 第二組比較器U2輸出信號打開第三組電源Vc，如此依序 打開各組電源Vd、VE····等。 然而，前述賴以依序打開各組電源的比較器電路係類 比形式，其十分容易受雜訊影響而產生誤動作（造成參考 電壓Vref不穩），當誤動作出現時，各組電源即非依原來 的順序打開’而如前揭所述，各組電源如未按順序開關， 即無法令液晶顯示器依序開機/關機。 由上述可知，傳統令液晶顯示器多組電源依序開關的 電路设相屬類比形式，致易受雜訊干擾而出現誤動作， 進;而無法順利完成開機/關機動作，故有待進-步檢討， 並謀求可行的解決方案。 …^此，本發明主要目的在提供—種可精確控制液晶顯 =夕組電源依序開關以順利完成開關機之控制方法及裝 .為達成前述目的採取的主要技術手段係令前述方法為 開晶顯示^之多組電源分別受—電子開關控制^ 7各組電子開關之開關受一組時序信號控制： n信號於每—觸發緣形成後，即產生 7各組電子開關在延遲狀態下一一觸I; 一——— =前=丄各組電子開關可在準確的時基條件下 稭以可令各組電源依特定的順序打開或關閉，521231 A7 ---------- V. Description of the invention (/) The present invention relates to a digital starting control method and device for a liquid crystal display, and in particular to a method that can accurately control the sequential switching of multiple sets of power supplies of the liquid crystal display for successful completion. Control method and device for switching on and off. Due to the high cost / price of liquid crystal displays, the traditional display manufacturers previously expected that it would be difficult for liquid crystal displays to replace cathode-ray tube displays in a few years. The main reason is that liquid crystal displays rely on foreign technology and the yield rate has not been effectively improved, so the cost is still high. The price has not been able to be significantly reduced. However, the amazing thing about the electronic technology industry is its high-efficiency research and development capabilities. As a result, LCD monitors have also made breakthroughs in manufacturing technology and can effectively improve their yield. At present, the price of 14.5-inch LCD monitors has been Significantly lowered 'so the prediction that liquid crystal displays cannot replace ray tube monitors in the short term is self-defeating. In fact, the reason why LCD monitors are delicate is not only that the power supply rules and control methods used in the process technology are more complicated than traditional monitors. For example, LCD monitors are powered by multiple sets of power supplies with different rules (such as + 3 · 3V, +3 · 45V, +9. 2V, -6V, + 18V, etc.), and multiple groups of power must be turned on and off in a certain order before they can be turned on or off normally. When the order of the switches is wrong, they cannot be turned on or off smoothly. Traditionally, the technology of sequentially switching multiple sets of power supplies of an LCD display adopts an analog method. The design principle is roughly shown in Figure 5. When it is turned on, the first group of power supplies Va is turned on first, and the first group of analogs is compared. The capacitor ci at the input of the comparator U1 turns on charging to form a delay. When the input voltage is greater than the reference voltage VrefA, the output signal of the first comparator 打开 turns on the second power supply VrefB; and the second comparator U2 is input 3. J. -------- ^ -----: ---- line. (Please read the notes on the back before filling this page) t Wave scale is applicable to Chinese national standard (NS) A4 size coffee χ (NO) 5. Description of the invention (meaning) The capacitor C2 on the terminal is charged, and when the input voltage is greater than the reference voltage VrefB, the output signal of the second group of comparators U2 turns on the third group of power sources Vc, so sequentially turn on each group of power sources Vd, VE ····Wait. However, the aforementioned comparator circuit, which relies on sequentially turning on the power of each group, is an analog form, which is very easy to be affected by noise and cause malfunction (resulting in the reference voltage Vref instability). When malfunction occurs, the power of each group is not the same as before. 'Sequential turn on' and as mentioned before, if the power of each group is not turned on in order, the LCD monitor cannot be turned on / off sequentially. As can be seen from the above, the traditional circuit setting of the sequential switching of multiple sets of power supplies of the LCD display is analogous, which is susceptible to noise interference and malfunctions, and the startup / shutdown operation cannot be completed smoothly, so it needs to be further reviewed. And seek a feasible solution. ... ^ The main purpose of the present invention is to provide a control method and device that can precisely control the liquid crystal display to sequentially switch on and off the power supply in order to successfully complete the switching on and off. The main technical means adopted to achieve the foregoing purpose is to make the foregoing method open. The crystal display ^ multiple sets of power are controlled by-electronic switches ^ 7 The switches of each group of electronic switches are controlled by a set of timing signals: n signal after each-triggering edge is formed, it will generate 7 sets of electronic switches in the delay state One-touch I; One --- = Front = 丄 Each group of electronic switches can make each group of power on or off in a specific order under accurate time base conditions.
521231 五、發明說明（5 y日 〜 传以順利的完成開機/關機，並可有效避免因雜^ 而產生的誤動作。 —办則述時序信號於一每一觸發緣產生後係分別產生一固 疋見度的延遲時間。 為達成前述目的採取的主要技術手段係令前述裝置包 括有： 、 電源轉換器，用以輸入電源轉換為特定規格的直流 電源； 複數的穩壓器，用以將電源轉換器輸出的直流電源轉 換為不同電壓規格的直流電源； 複數的電子開關，係分設於前述各穩壓器的輸出端上 一時序信號產生器，具有複數的觸發信號輸出端，並 分別連接至各電子開關，以控制其啟閉；其中·· 刖述時序信號產生器產生之每一組觸發信號間分別存 在延遲時間，而令各電子開關分別在延遲後觸發。 前述時序信號產生器產生之每一組觸發信號間分別具 有固定的延遲時間。 前述的電子開關係分別由金氧半場效電晶體所構成。 前述的電源轉換器為DC TO DC。 前述的電源轉換器為AC TO DC。 為使貝審查委員進一步瞭解前述目的及本發明之技 術特徵，茲附以圖式詳細說明如后： (一）圖式部分： 5 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁)521231 V. Description of the invention (5 y ~ ~ pass to successfully complete the startup / shutdown, and can effectively avoid misoperation due to miscellaneous ^.-Office said that the timing signal is generated after each trigger edge is generated. The delay time of visibility. The main technical measures taken to achieve the foregoing purpose are to make the aforementioned device include: 1. a power converter for inputting power into a specific specification DC power supply; a plurality of voltage regulators for converting power The DC power output from the converter is converted into DC power with different voltage specifications. A plurality of electronic switches is a timing signal generator which is provided on the output end of each of the aforementioned voltage regulators, has a plurality of trigger signal output ends, and is connected respectively. To each electronic switch to control its opening and closing; among them, there is a delay time between each set of trigger signals generated by the timing signal generator, so that each electronic switch triggers after a delay. The aforementioned timing signal generator generates There is a fixed delay time between each set of trigger signals. The aforementioned power converter is DC TO DC. The aforementioned power converter is AC TO DC. In order to make the panel reviewer better understand the foregoing purpose and the technical features of the present invention, detailed descriptions are attached with drawings as follows: ( A) Schematic part: 5 This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)
五、發明說明（y) 第一圖：係本發明K乍流程 圖 第二圖 第三圖 第四圖 係本發明之結構示意圖。 係本發明之工作波形圖。V. Description of the invention (y) The first diagram: the flow chart of the present invention, the second diagram, the third diagram, and the fourth diagram are schematic diagrams of the structure of the present invention. It is a working waveform diagram of the present invention.
第五圖=明所採用電子開關-可行實施例示意圖。 弟五圖·係習用液晶顯 "M (二）圖號部分：…、'電源控制電路之線路示意圖。 (匕)電源編 （20)穩壓器 (以）時序信號產生器 孫Μ 發明控制液晶顯示器多組電源依序開關之方法 係如第一圖所示，其包括以下步驟： 令液晶顯示器之多組電源分別連接一電子開關，並受 其控制而打開或關閉； 7各組電Μ關之開關受—組時序信號控制； 令時序信號於每一觸發緣形成後，產生一延遲時間， 態下——觸發；其中： 在前述方法中’係由具備準確時基條件的時序脈波信 號以分別控制各組電子開關之動作，藉此可令各組電源依 特定的順序打開或關閉。而為確保各組電源在對應電子開 關的控制下，可依照固定的順序——打開或關閉，因而在 刖述時序信號的每一觸發緣產生後即分別產生一固定的延 遲時間，使各組電源一個接一個的依序打開或關閉。 由於時序信號係數位形式，具有不受雜訊干擾影響， 可準確地使電子開關產生開關動作之優點。 又’賴以達成前述目的之裝置，其一可行實施例係如 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --------^---------線· (請先閱讀背面之注意事項再填寫本頁) 五、發明說明（Γ) 第二圖所示，其包括有： 林的吉f源轉換a(1Q)，用以輸人電源轉換為特定規 才。的直k電源，其可為DCT0DC或ACT0DC者； 複數的電子開關（30)，係分設於前述各㈣器（ 的輸出端上，以控制各組電源是否送出至負載； 一時序信號產生器（40)，具有複數的觸發信號輸 端，並分別與各電子開關（3 0)連接，以控制其啟閉 ;其中： =數的穩壓，用以將前述電源轉換器（1 〇)輪出的直流電源轉換為不同電㈣格的直流電源，以 足液晶顯示器所需要不同規格要求的工作電源； 前述時序信號產生器（4〇)係由外部供應或内部自 動產生的時序信號ακ，提供其時基信號；又其產生之每 一組觸發信號間分別存在延遲時間（如第三圖所示，波形 中高電位表示開機’低電位表示關機），而令各電子開關 ⑴）在延遲後被分別一 一觸發。於本實施例中，該時 序L喊產生& ( 4 〇 )產生之每__組觸發信號間分別具有 固定的延遲時間（例如100 ms)。 又别述用以控制電源啟閉的電子開關（3 〇),其可 由繼電器、電晶體或其他電子式開關構成，於本實施例中 ’ δ亥電子開關（3 0 )係如第四圖所示，係由兩金氧半場 效電晶體配合—反相器所構成，i其控制端在時序信號產 生益（4 0 )送入正向脈衝時導通而送出電源。前述實施 例僅在說明該電子開關（3 〇)之一可行態樣，非用以限 521231 A7 B7 五、發明說明（厶） 制本發明之電子開關形式，合先陳明。 由上述說明可知’本發明係以數位式的時序信號經由 延遲處理後以分別控制液晶顯示器各組電源依序打開或關 閉’由於時序信號具有準確的時基條件，其不受雜訊干擾 ，故可有效避免習用控制方式易受雜訊干擾而產生誤動作 的缺點，進而可確保液晶顯示器順利的完成開機、關機動 作，由此可見’本發明確已具備顯著的實用價值，並已符 合發明專利要件，爰依法提起申請。 (請先閱讀背面之注意事項再填寫本頁) ϋ ϋ ϋ n ϋ n n 一δ,τ I I n ϋ n n n 線％· 本紙張尺度適用中國國家標率（CNS)A4規格（21〇 x 297公釐）Fifth Figure = Schematic diagram of a feasible embodiment of the electronic switch used. The fifth figure is a conventional LCD display " M (II) Figure No. part: ..., 'The schematic diagram of the power control circuit. (Dagger) Power supply (20) Voltage regulator (in order) timing signal generator Sun M Invention of the method to control the sequential switching of multiple sets of power supply of the liquid crystal display is shown in the first figure, which includes the following steps: Each group of power is connected to an electronic switch, and is controlled to be turned on or off; 7 The switches of each group of M are controlled by a group of timing signals; After the timing signal is formed, a delay time is generated. ——Trigger; Among them: In the foregoing method, the timing pulse signals with accurate time base conditions are used to control the actions of each group of electronic switches, thereby enabling each group of power to be turned on or off in a specific order. In order to ensure that each group of power supplies can be turned on or off in a fixed order under the control of the corresponding electronic switch, a fixed delay time is generated after each trigger edge of the described timing signal is generated. The power is turned on or off one by one in order. Due to the form of the time-series signal coefficients, it has the advantage of not being affected by noise interference, and can accurately cause the electronic switch to have a switching action. It is also a device that relies on achieving the aforementioned purpose. One possible embodiment is that if this paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -------- ^ ----- ---- Line · (Please read the notes on the back before filling out this page) 5. Description of the invention (Γ) As shown in the second figure, it includes: Lin Jiji source conversion a (1Q), used to input Human power is converted to specific regulations. A direct-k power source, which can be DCT0DC or ACT0DC; a plurality of electronic switches (30) are separately provided on the output ends of the aforementioned devices (to control whether each group of power is sent to the load; a timing signal generator (40), which has a plurality of trigger signal input terminals, and is connected with each electronic switch (30) to control its opening and closing; wherein: = the number of voltages used to turn the aforementioned power converter (10) wheel The output DC power is converted into DC power of different power grids to meet the working power required by the LCD with different specifications. The aforementioned timing signal generator (40) is a timing signal ακ supplied from the outside or automatically generated by the inside. There is a delay time between each set of trigger signals generated by it (as shown in the third picture, the high potential in the waveform indicates that the power is on and the low potential indicates that the power is off), and the electronic switches are delayed after being delayed. Trigger one by one. In this embodiment, there is a fixed delay time (e.g., 100 ms) between each of the trigger signals generated in the sequence L & (4 0). Besides, the electronic switch (30) used to control the opening and closing of the power supply may be composed of a relay, a transistor or other electronic switches. In this embodiment, the 'δ HAI electronic switch (3 0) is as shown in the fourth figure. As shown in the figure, it is composed of two metal-oxide-semiconductor field-effect transistors combined with an inverter. Its control terminal is turned on when the timing signal generates a positive signal (40), which sends out the power. The foregoing embodiment only illustrates one possible aspect of the electronic switch (30), and is not intended to limit it. 521231 A7 B7 V. Description of the Invention (i) The electronic switch of the present invention is made in the same form as before. From the above description, it can be known that the present invention uses digital time-series signals to delay and sequentially control each group of power supplies of the liquid crystal display after delay processing. Since the time-series signals have accurate time base conditions, they are not affected by noise, so It can effectively avoid the shortcomings that the conventional control method is easily susceptible to noise interference, which can ensure that the liquid crystal display can successfully complete the startup and shutdown operations. Therefore, it can be seen that the present invention does have significant practical value and meets the requirements of the invention patent , Filed an application in accordance with the law. (Please read the precautions on the reverse side before filling out this page) ϋ ϋ ϋ n 一 nn a δ, τ II n nnn line% · This paper size applies to China National Standard (CNS) A4 specification (21〇x 297 mm )