TWI430222B - Scanning backlight method for low cost light-emitting diode - Google Patents
Scanning backlight method for low cost light-emitting diode Download PDFInfo
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本發明係有關於一種低成本發光二極體背光掃描方法，尤其是指一種用於具有動態影像品質改良及動態時序控制之顯示器的背光控制系統，利用時序掃描之控制方式可減少驅動積體電路的使用數量與降低動態影像拖影之問題，僅採用一個時序控制電路及一個光源驅動電路，使得顯示器系統之背光模組光源達到相同之效果，以可大幅節省光源驅動電路之使用數量，降低系統之成本，體積與重量，進一步改善動態影像之拖影像現象，使畫面更加清晰流暢，而在其整體施行使用上更增實用功效特性的低成本發光二極體背光掃描方法創新設計者。 The invention relates to a low-cost light-emitting diode backlight scanning method, in particular to a backlight control system for a display with dynamic image quality improvement and dynamic timing control, which can reduce the driving integrated circuit by using the timing scanning control method. The number of uses and the problem of reducing motion image smear, only one timing control circuit and one light source driving circuit are used, so that the backlight module light source of the display system achieves the same effect, thereby greatly reducing the number of light source driving circuits and reducing the system. The cost, volume and weight, further improve the dynamic image drag phenomenon, make the picture more clear and smooth, and innovate the designer of the low-cost light-emitting diode backlight scanning method with more practical functions in its overall implementation.
按，隨著資訊時代的來臨，不僅桌上型電腦與筆記型電腦等多媒體產品日漸普及，且各種視訊或影像裝置之體積亦日漸趨於輕薄化；傳統的陰極射線顯示器〔CRT〕雖然仍具有其優點存在，但由於內部電子槍的結構，使得其體積極為龐大、重量亦較重，且於使用上仍有輻射線傷害使用者眼睛等情況發生。因此，於近年來具有輕、薄、高亮度、低電力消耗與無輻射之優點的液晶顯示器〔Liquid Crystal Display，LCD〕，已逐漸取代傳統的陰極射線顯示器成為消費市場中之主流產品。 With the advent of the information age, not only multimedia products such as desktop computers and notebook computers are becoming more popular, but also the size of various video or imaging devices is becoming thinner and lighter; traditional cathode ray displays (CRTs) still have The advantages exist, but due to the structure of the internal electron gun, its volume is extremely large, the weight is also heavy, and there are still radiation damage to the user's eyes in use. Therefore, in recent years, liquid crystal displays (LCDs), which have the advantages of lightness, thinness, high brightness, low power consumption and no radiation, have gradually replaced traditional cathode ray displays as mainstream products in the consumer market.
該液晶顯示器由於其具有之多項優點，使得其已大量的被應用在 各式電子產品中，包含應用小尺寸面板的個人數位助理、行動電話、數位攝影機、及數位相機等，以及應用大尺寸面板的顯示器、筆記型電腦和電視等；但由於液晶分子本身並不會發光，故必須藉由背光模組提供液晶面板所需之面光源，才能將液晶面板的畫面資訊顯示出來，使得背光模組係為液晶顯示器中不可或缺之重要構成物件。 Due to its many advantages, the liquid crystal display has been widely used in Various electronic products include personal digital assistants, mobile phones, digital cameras, and digital cameras that use small-sized panels, as well as monitors, notebooks, and televisions that use large-sized panels; but because the liquid crystal molecules themselves are not Since the backlight module provides the surface light source required for the liquid crystal panel, the screen information of the liquid crystal panel can be displayed, so that the backlight module is an indispensable component in the liquid crystal display.
而隨著液晶顯示器被廣泛的應用在電視多媒體上，人們對於動態影像的要求也就越高。動態畫質模糊調校技術是近幾年來相當熱門的話題，而陸續也有更多的液晶顯示器開始出現「動態畫面模糊改善」的訴求，液晶顯示器受限於液晶的反應時間及液晶顯示光源表現為持續方式，使得動態影像表現上，在人眼的視覺停留的因素下，導致影像移動的邊界上產生陰影。 With the widespread use of liquid crystal displays in television multimedia, the demand for dynamic images is higher. The dynamic image quality blur adjustment technology is a very popular topic in recent years, and more and more liquid crystal displays have begun to appear in the "dynamic picture blur improvement". The liquid crystal display is limited by the reaction time of the liquid crystal and the liquid crystal display light source is The continuous mode makes the dynamic image appear to cause shadows on the boundary of the image movement under the condition of the visual retention of the human eye.
而一般早期的液晶顯示器的背光光源圖場時間恆亮，在動態影像中，前畫面影像資料會跟之後的畫面影像資料有部分的重疊，人眼看來也比較容易有模糊的感覺；也因此，即有發明一種循序點亮的控制機制，在背光源中將光源的點滅方式由上往下循序點亮，以改善動態影像之清晰程度。 In general, the backlight source of the early liquid crystal display has a constant field time. In the motion picture, the front picture image data will partially overlap with the subsequent picture image data, and the human eye seems to be more likely to have a fuzzy feeling; That is, a control mechanism for sequentially lighting is invented, and the light-off mode of the light source is sequentially illuminated from top to bottom in the backlight to improve the clarity of the dynamic image.
其中，就該掃描式背光模組而言，請參閱第八圖現有之掃描式背光模組控制方塊圖及第九圖現有之掃描式背光模組控制電路圖所示，該背光模組(8)係設有一時序控制電路(81)，於該時序控制電路(81)並聯有諸多光源驅動電路(82)，且於各光源驅動電路(82)皆連接有電源(83)以供給所連接之光源(84)電能，而能利用時序控制電路(81)之時序控制方式達到光源(84)循序點亮之效果，有效改善動態殘影問題。 For the scanning backlight module, please refer to the control block diagram of the scanning backlight module of the eighth embodiment and the control circuit diagram of the scanning backlight module of the ninth figure, the backlight module (8) There is a timing control circuit (81), a plurality of light source driving circuits (82) are connected in parallel in the timing control circuit (81), and a power source (83) is connected to each of the light source driving circuits (82) to supply the connected light source. (84) Electric energy, and the timing control method of the timing control circuit (81) can be used to achieve the effect of sequentially lighting the light source (84), thereby effectively improving the dynamic image sticking problem.
然而，上述背光模組雖可達到改善動態殘影問題之預期功效，但於其整體施行使用上卻發現，該結構之控制方式是以時序控制電路個別循序控制光源驅動電路，即N組源即須要相對應的N組光源驅動電路，由時序控制電路控制那一組光源驅動電路動作，造成整個背光模組上無法有效降低光源驅動電路之設置成本與空間，致令其在整體仍存在有極大的改進空間者。 However, although the backlight module can achieve the expected effect of improving the dynamic image sticking problem, it is found that the control mode of the structure is that the timing control circuit controls the light source driving circuit in an orderly manner, that is, the N group source is The corresponding N sets of light source driving circuits are required, and the timing control circuit controls the operation of the set of light source driving circuits, so that the entire backlight module cannot effectively reduce the installation cost and space of the light source driving circuit, so that it still has a great overall Improvement space for the person.
緣是，發明人有鑑於此，秉持多年該相關行業之豐富設計開發及實際製作經驗，針對現有之結構及缺失再予以研究改良，因而發明出一種低成本發光二極體背光掃描方法，以期達到更佳實用價值性之目的者。 In view of this, the inventor has invented a low-cost LED backlight scanning method in order to achieve the richness of design and development and practical production experience of the relevant industry for many years, and to research and improve the existing structure and defects. The purpose of better practical value.
本發明之低成本發光二極體背光掃描方法，其主要係以掃描式為基礎的時序顯示技術，其背光源的亮暗次序為光源由上往下循序逐步點亮，液晶分子的響應時間如果不夠快速，在動態影像中容易有拖影的情形發生，CRT之電子槍只發射間斷有色光，部份時間為插黑畫面，此脈衝型之驅動方式，可克服因人眼視覺暫留所造成的拖影現象，將動態畫面處理的更加流暢，以一種循序點亮的控制機制，在背光源中若將光源的點滅方式由上往下循序點亮，便可如同插黑一樣，進一步改善動態影像之清晰程度，使畫面更加栩栩如生；藉此，以可大幅節省光源驅動電路之使用數量，降低系統之成本，體積與重量，進一步改善動態影像之拖影像現象，使畫面更加清晰流暢，而在其整體施行使用上更增實用功效特性。 The low-cost light-emitting diode backlight scanning method of the invention mainly adopts a scanning-based time series display technology, wherein the light-dark sequence of the backlight is gradually illuminated by the light source from top to bottom, and the response time of the liquid crystal molecules is Not fast enough, it is easy to have smear in the motion picture. The CRT's electron gun only emits intermittent colored light, and part of the time is black screen. This pulse type driving method can overcome the result of human vision persistence. Smear phenomenon, the dynamic picture processing is more smooth, with a sequential lighting control mechanism, if the light source's point-off mode is sequentially illuminated from top to bottom in the backlight, it can be improved like dynamic blackout. The clarity of the image makes the picture more vivid; thus, the number of light source driving circuits can be greatly saved, the cost, volume and weight of the system can be reduced, and the phenomenon of moving images can be further improved, so that the picture is clearer and smoother. Its overall implementation has increased utility characteristics.
(1)‧‧‧光源模組 (1)‧‧‧Light source module
(11)‧‧‧光源 (11) ‧‧‧Light source
(2)‧‧‧電源轉換電路 (2)‧‧‧Power conversion circuit
(3)‧‧‧光源驅動電路 (3) ‧‧‧Light source drive circuit
(4)‧‧‧時序控制單元 (4) ‧‧‧Sequence Control Unit
(41)‧‧‧時序控制電路 (41) ‧‧‧Sequence Control Circuit
(42)‧‧‧掃描控制單元 (42)‧‧‧Scan Control Unit
(43)‧‧‧亮度控制電路 (43)‧‧‧Brightness control circuit
(44)‧‧‧記憶單元 (44)‧‧‧ memory unit
(45)‧‧‧影像偵測電路 (45)‧‧‧Image Detection Circuit
(5)‧‧‧開關 (5) ‧ ‧ switch
(6)‧‧‧可程式邏輯控制器 (6)‧‧‧Programmable Logic Controller
(7)‧‧‧解多工器 (7) ‧ ‧ solution multiplexer
(8)‧‧‧背光模組 (8)‧‧‧Backlight module
(81)‧‧‧時序控制電路 (81) ‧‧‧Sequence Control Circuit
(82)‧‧‧光源驅動電路 (82)‧‧‧Light source drive circuit
(83)‧‧‧電源 (83)‧‧‧Power
(84)‧‧‧光源 (84) ‧‧‧Light source
第一圖：本發明之控制方塊圖 First picture: control block diagram of the present invention
第二圖：本發明之控制電路圖 Second picture: control circuit diagram of the present invention
第三圖：本發明之動態時序背光控制方法流程圖 Third: Flow chart of the dynamic timing backlight control method of the present invention
第四圖：本發明之掃描時序控制圖 Fourth Picture: Scan Timing Control Chart of the Present Invention
第五圖：本發明掃描控制開關架構圖 Figure 5: Scanning control switch architecture diagram of the present invention
第六圖：本發明實際控制電路圖 Figure 6: Actual control circuit diagram of the present invention
第七圖：本發明利用解多工器控制驅動電路選擇發光二極體掃描 架構圖 Figure 7: The present invention utilizes a multiplexer control drive circuit to select a light-emitting diode scan Architecture diagram
第八圖：現有之掃描式背光模組控制方塊圖 Figure 8: Existing scanning backlight module control block diagram
第九圖：現有之掃描式背光模組控制電路圖 Figure IX: Control circuit diagram of the existing scanning backlight module
為令本發明所運用之技術內容、發明目的及其達成之功效有更完整且清楚的揭露，茲於下詳細說明之，並請一併參閱所揭之圖式及圖號：首先，請參閱第一圖本發明之控制方塊圖及第二圖本發明之控制電路圖所示，本發明主要係由光源模組(1)、電源轉換電路(2)、光源驅動電路(3)及時序控制單元(4)所組成；其中：該光源模組〔Backlight〕(1)，其係利用多組發光二極體〔LED〕光源(11)來當作背光模組的發光源，用以提供一顯示面板顯像所需之光源。 For a more complete and clear disclosure of the technical content, the purpose of the invention and the effects thereof achieved by the present invention, the following is a detailed description, and please refer to the drawings and drawings: First, please refer to 1 is a control block diagram and a second diagram of the present invention. The present invention is mainly composed of a light source module (1), a power conversion circuit (2), a light source driving circuit (3), and a timing control unit. (4) The composition is: wherein: the light source module (Backlight) (1), which uses a plurality of sets of light-emitting diode (LED) light sources (11) as a light source of the backlight module to provide a display The light source required for panel imaging.
該電源轉換電路〔DC/DC Converter〕(2)，其係用以將電源轉換 較高電壓至足以驅動光源模組(1)所須之電壓。 The power conversion circuit (DC/DC Converter) (2), which is used to convert power The higher voltage is sufficient to drive the voltage required by the light source module (1).
該光源驅動電路〔Driver Circuit〕(3)，其係電性連接至該光源模組(1)，用以依序分別驅動多組光源(11)。 The light source driving circuit (3) is electrically connected to the light source module (1) for sequentially driving the plurality of sets of light sources (11).
該時序控制單元(4)，其包含時序控制電路(41)，以依序控制光源驅動電路(3)循序點亮該光源模組(1)至少一組光源(11)，該時序控制電路(41)並直接與光源模組(1)連接，控制該光源模組(1)導通與否；掃描控制單元(42)，控制時序控制電路(41)所需之頻率；亮度控制電路(43)，以依據掃描之位置來決定光源模組(1)光源(11)所需之亮度；記憶單元(44)，用以儲存並提供光源模組(1)各組光源(11)所需之亮度值；影像偵測電路(45)，用以偵測影像之狀態以決定光源模組(1)掃描之頻率。 The timing control unit (4) includes a timing control circuit (41) for sequentially controlling the light source driving circuit (3) to sequentially illuminate the light source module (1) at least one set of light sources (11), the timing control circuit ( 41) and directly connected to the light source module (1) to control whether the light source module (1) is turned on or not; the scanning control unit (42) controls the frequency required by the timing control circuit (41); the brightness control circuit (43) To determine the brightness required by the light source module (1) light source (11) according to the position of the scan; the memory unit (44) for storing and providing the brightness required by each group of light sources (11) of the light source module (1) The image detecting circuit (45) is configured to detect the state of the image to determine the frequency of the scanning of the light source module (1).
請再一併參閱第三圖本發明之動態時序背光控制方法流程圖所示，其係先偵測目前畫面亮度及環境亮度之狀況，利用環境亮度及畫面亮度比率，調整光源模組(1)之光源(11)亮度，當環境亮度須愈亮時，則光源(11)須愈亮，才能清楚呈現畫面內容，反之，則光源(11)發光可控制暗些，達省電功能。光源(11)發光強度可由時序控制單元(4)之掃描控制單元(42)控制掃描頻率及驅動之脈波寬度決定光源亮度，再由光源驅動電路(3)依序在不同時間，只讓一組光源模組(1)發亮，請再一併參閱第四圖本發明之掃描時序控制圖所示，若有10組光源(11)，只有其中一組光源(11)會發亮。 Please refer to the third diagram of the flow chart of the dynamic timing backlight control method of the present invention, which firstly detects the current picture brightness and ambient brightness, and adjusts the light source module by using the ambient brightness and the screen brightness ratio (1). The brightness of the light source (11), when the ambient brightness needs to be brighter, the light source (11) must be brighter to clearly present the picture content, and vice versa, the light source (11) can control the darkness to achieve a power saving function. The illumination intensity of the light source (11) can be controlled by the scanning control unit (42) of the timing control unit (4) to control the scanning frequency and the pulse width of the driving to determine the brightness of the light source, and then the light source driving circuit (3) sequentially at different times, only one The group light source module (1) is illuminated. Please refer to the fourth diagram. The scanning timing control diagram of the present invention shows that if there are 10 groups of light sources (11), only one of the light sources (11) will illuminate.
如此一來，使得該驅動訊號由上往下逐步驅動並循序點亮，即為掃描式背光模組控制技術，其中驅動光源模組(1)之光源(11)所 須之亮度，可利用脈波寬度調變的方式，個別控制導通時間以調整其所須之亮度。而決定亮度開機初始值，由目前環境亮度及畫面亮度決定，開機後再由使用者依個別喜好，改變不同亮度，並把參數存入時序控制單元(4)之記憶單元(44)中，作為下次開機參考。光源驅動電路(3)為一直導通，受輸入參數決定亮度大小，並由時序控制單元(4)之時序控制電路(41)直接控制那一組光源模組(1)導通。使得背光掃描系統，N組光源(11)，只須1組光源驅動電路(3)進行控制，電路成本可大幅下降。 In this way, the driving signal is gradually driven from top to bottom and sequentially illuminated, that is, the scanning backlight module control technology, wherein the light source (11) of the driving light source module (1) The brightness of the light must be adjusted by the pulse width modulation to individually control the conduction time to adjust the brightness required. The initial value of the brightness on-off is determined by the current ambient brightness and the brightness of the picture. After the power is turned on, the user changes the brightness according to individual preferences, and stores the parameters in the memory unit (44) of the timing control unit (4). Next boot reference. The light source driving circuit (3) is always turned on, and the brightness is determined by the input parameters, and the set of light source modules (1) is directly controlled by the timing control circuit (41) of the timing control unit (4). The backlight scanning system and the N group light source (11) are controlled by only one set of light source driving circuits (3), and the circuit cost can be greatly reduced.
請一併參閱第五圖本發明掃描控制開關架構圖所示，若一行有M組光源模組(1)，每個光源模組(1)有數個到數十個光源(11)串接，每一行光源模組(1)至電源之間只有一個開關(5)，同一行光源模組(1)開關(5)之控制點由時序控制單元(4)控制，M組光源模組(1)受同一時序控制。若共有N行光源模組(1)，則須產生N個時序週期，每一時序週期只讓其中第N行光源模組(1)導通，此時由時序控制單元(4)之時序控制電路(41)控制開關(5)決定讓那一行光源模組(1)發光。一個光源驅動電路(3)可驅動一行光源模組(1)。若面板面積太大情況下，只須加快掃描頻率或選較多輸出埠的光源驅動電路(3)，仍保持採用1顆光源驅動電路(3)。因為一個時序週期只有1行光源模組(1)發光，可把所有行光源模組(1)並接至光源驅動電路(3)，在一個時序週期內只有一行光源模組(1)導通，此時光源驅動電路(3)只須推動一行光源模組(1)電流，其他行光源模組(1)皆因截止，故不須電流。因此本發明只須一個光源驅動電路(3)推動。 Please refer to the fifth diagram of the scanning control switch architecture diagram of the present invention. If there are M groups of light source modules (1) in a row, each light source module (1) has several to dozens of light sources (11) connected in series. There is only one switch (5) between each row of light source modules (1) to the power source, and the control points of the same row of light source modules (1) switches (5) are controlled by the timing control unit (4), and the M group of light source modules (1) ) is controlled by the same timing. If there are N rows of light source modules (1), N timing cycles must be generated, and only the Nth row of light source modules (1) are turned on in each timing cycle. At this time, the timing control circuit of the timing control unit (4) is controlled. (41) The control switch (5) determines which row of light source modules (1) to emit light. A light source driving circuit (3) can drive a row of light source modules (1). If the panel area is too large, it is only necessary to speed up the scanning frequency or select more light source driving circuit (3), and still use one light source driving circuit (3). Because only one row of light source modules (1) emits light in one timing cycle, all the row light source modules (1) can be connected to the light source driving circuit (3), and only one row of light source modules (1) is turned on in one timing cycle. At this time, the light source driving circuit (3) only needs to push the current of one row of the light source module (1), and the other row light source modules (1) are all cut off, so no current is required. Therefore, the present invention requires only one light source driving circuit (3) to be pushed.
請一併參閱第六圖本發明實際控制電路圖所示，其利用可程式邏 輯控制器〔FPGA〕(6)或微處理器〔up〕產生掃描時序去控制開關(5)。此開關(5)採用CMOS元件，即一個PMOS一端接至電源端，一個NMOS一端接至地。當輸入信號為高位準時，NMOS導通，此時PMOS閘極接至地，使PMOS導通，光源模組(1)發亮。當輸入信號為低位準時，NMOS截止，此時PMOS閘極接至1k~10k電阻，由電源提供高位準，使PMOS截止，光源模組(1)變不亮。亦可採用其他型態開關作光源模組(1)控制，亦在本專利範圍內。 Please refer to the sixth figure for the actual control circuit diagram of the present invention, which utilizes programmable logic. The controller [FPGA] (6) or the microprocessor [up] generates the scan timing to control the switch (5). The switch (5) uses a CMOS component, that is, one PMOS terminal is connected to the power supply terminal, and one NMOS terminal is connected to the ground. When the input signal is high, the NMOS is turned on, and the PMOS gate is connected to the ground, so that the PMOS is turned on, and the light source module (1) is illuminated. When the input signal is low, the NMOS is turned off. At this time, the PMOS gate is connected to the 1k~10k resistor, and the power supply provides a high level, so that the PMOS is turned off, and the light source module (1) does not light. Other types of switches can also be used as the light source module (1) control, which is also within the scope of this patent.
請一併參閱第七圖本發明利用解多工器控制驅動電路選擇發光二極體掃描架構圖所示，其採用解多工器(7)，解多工器(7)置在光源驅動電路(3)與光源模組(1)之間，若有N行光源模組(1)，則須用1*N之解多工器(7)，由時序控制單元(4)之時序控制電路(41)控制解多工器(7)，當解多工器(7)控制為1時，則光源驅動電路(3)輸出接至第一列光源模組(1)，當解多工器(7)控制為2時，則光源驅動電路(3)輸出接至第二列光源模組(1)，以此類推，可由時序控制單元(4)控制解多工器(7)讓光源驅動電路(3)推動第N行光源模組(1)。時序控制單元(4)之時序控制電路(41)為二進位計數器〔counter〕，由0,1,2..到N再回到0循環，解多工器(7)可在不同時間週期控制光源驅動電路(3)推動預期光源模組(1)。如此亦須一顆光源驅動電路(3)即可，由於光源驅動電路(3)價位較解多工器(7)貴很多倍，因此可降低生產成本。 Please refer to the seventh figure. The present invention uses a demultiplexer to control the driving circuit to select a scanning diode structure diagram, which uses a demultiplexer (7), and the demultiplexer (7) is placed in the light source driving circuit. (3) If there is a N-line light source module (1) between the light source module (1), a 1*N solution multiplexer (7) must be used, and the timing control circuit of the timing control unit (4) (41) Control the multiplexer (7). When the multiplexer (7) is controlled to 1, the output of the light source driving circuit (3) is connected to the first column of the light source module (1), and the multiplexer is demultiplexed. (7) When the control is 2, the output of the light source driving circuit (3) is connected to the second column light source module (1), and so on, and the multiplexer (7) can be controlled by the timing control unit (4) to drive the light source. The circuit (3) pushes the Nth row of the light source module (1). The timing control circuit (41) of the timing control unit (4) is a binary counter, from 0, 1, 2, .. to N and then back to the 0 cycle, and the demultiplexer (7) can be controlled at different time periods. The light source driving circuit (3) pushes the intended light source module (1). Therefore, a light source driving circuit (3) is required, and since the price of the light source driving circuit (3) is many times higher than that of the multiplexer (7), the production cost can be reduced.
然而前述之實施例或圖式並非限定本發明之產品結構或使用方式，任何所屬技術領域中具有通常知識者之適當變化或修飾，皆應視為不脫離本發明之專利範疇。 However, the above-described embodiments or drawings are not intended to limit the structure or the use of the present invention, and any suitable variations or modifications of the invention will be apparent to those skilled in the art.
藉由以上所述，本發明之元件組成與使用實施說明可知，本發明 與現有結構相較之下，本發明由於係以掃描方式為基礎的時序顯示技術，僅採用一個時序控制電路及一個光源驅動電路，以一種循序點亮的控制機制，在背光源中將光源的點滅方式由上往下循序點亮，便可如同插黑一樣，進一步改善動態影像之清晰程度，使畫面更加栩栩如生，以可大幅節省光源驅動電路之使用數量，降低系統之成本，體積與重量，進一步改善動態影像之拖影像現象，使畫面更加清晰流暢，而在其整體施行使用上更增實用功效特性。 From the above, the component composition and use description of the present invention show that the present invention Compared with the existing structure, the present invention adopts a timing-based display technology based on scanning mode, and uses only one timing control circuit and one light source driving circuit to control the light source in a backlight in a sequential lighting control mechanism. The dot-off mode is sequentially illuminated from top to bottom, which can improve the clarity of the dynamic image and make the picture more vivid. This can greatly reduce the number of light source driving circuits and reduce the cost, volume and weight of the system. It further improves the phenomenon of dragging images of moving images, making the picture clearer and smoother, and more practical and effective features in its overall implementation.
綜上所述，本發明實施例確能達到所預期之使用功效，又其所揭露之具體構造，不僅未曾見諸於同類產品中，亦未曾公開於申請前，誠已完全符合專利法之規定與要求，爰依法提出發明專利之申請，懇請惠予審查，並賜准專利，則實感德便。 In summary, the embodiments of the present invention can achieve the expected use efficiency, and the specific structure disclosed therein has not been seen in similar products, nor has it been disclosed before the application, and has completely complied with the provisions of the Patent Law. And the request, the application for the invention of a patent in accordance with the law, please forgive the review, and grant the patent, it is really sensible.
(1)‧‧‧光源模組 (1)‧‧‧Light source module
(11)‧‧‧光源 (11) ‧‧‧Light source
(2)‧‧‧電源轉換電路 (2)‧‧‧Power conversion circuit
(3)‧‧‧光源驅動電路 (3) ‧‧‧Light source drive circuit
(4)‧‧‧時序控制單元 (4) ‧‧‧Sequence Control Unit
(41)‧‧‧時序控制電路 (41) ‧‧‧Sequence Control Circuit
(42)‧‧‧掃描控制單元 (42)‧‧‧Scan Control Unit
(43)‧‧‧亮度控制電路 (43)‧‧‧Brightness control circuit
(44)‧‧‧記憶單元 (44)‧‧‧ memory unit
(45)‧‧‧影像偵測電路 (45)‧‧‧Image Detection Circuit
Claims (5)
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| TW98100334A TWI430222B (en) | 2009-01-07 | 2009-01-07 | Scanning backlight method for low cost light-emitting diode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW98100334A TWI430222B (en) | 2009-01-07 | 2009-01-07 | Scanning backlight method for low cost light-emitting diode |
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| TW201027481A TW201027481A (en) | 2010-07-16 |
| TWI430222B true TWI430222B (en) | 2014-03-11 |
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| TWI506612B (en) * | 2011-05-31 | 2015-11-01 | Au Optronics Corp | Backlight module, display system and driving method of backlight module |
| CN110992902B (en) * | 2019-12-24 | 2022-06-14 | 苏州佳世达电通有限公司 | Display system and backlight control method thereof |
| TWI723834B (en) * | 2020-04-07 | 2021-04-01 | 鄭錦池 | Light-emitting element package module for display device and back light and display device |
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