AUO_友达_液晶显示屏B140XW02_V0_01_PCB_电路图
液晶电视维修去除保护电路大全
液晶电视维修去除保护电路大全液晶电视维修去除保护电路大全TL4941和16 对地短路TL5001 5 对地短路TL1451 15 对地短路TL5451 15 对地短路TA9687CN 1脚吸空Ta9687gn 12脚对地MB3775 15 对地短路INL837GN 14脚对地IT3713 15脚空AZ7500BM-E1第4脚接地AT1741 15 对地短路AT1380 2 对地短路KA75001和16 对地短路FA362915和16 将外接电容短路FA3630 7和10对地短路FAN7318 1脚对地FAN7311 1脚接地MP1008ES 4 对地短路MP1009ES 5脚对地MP1038EY6脚对地..取消保护,灯管老化造成保护, MP1038EY 用导线11脚连接2脚MP1048EY 1、5接地mps1012 5脚接地ozl68gn 8去保护OZ960gn 4、7脚短接或2脚对地OZ960 OZ962 2对地短路OZ965 4对地短路OZ9RR 8对地短路OZ9933gn 12脚接地OZ9937 14接地OZ9938去掉保护电路方法1.把3脚直接对地短路，2.把6脚直接对地短路3.把7脚接地电阻取下不用OZ9910GN 6脚接地OZ9976 8脚去保护对地OZT1060GN 1脚对地st 324 5脚接地BA9741 15对地短路BA9743 15对地短路BD9215F 23欠压保护 17过压保护 18过流保护BD9893: 10脚接地BD9893F 7脚对地;BD9897FS BIT3101 2和15吸空引脚BIT3102 5 吸空引脚BIT3105 4 吸空引脚BIT3106 4和27吸空引脚BIT3107 4 吸空引脚BIT3193 15吸空引脚BIT3195G 15脚吸空BIT3713 15脚吸空去保护BIT3715 12脚对地BIT7313 15吸空BIT3501 4J脚悬空或连接4、7脚经证实1和5脚短接去保护成功OB3306QP OB3328UNQP 0B3316NQP 5脚对地OB3316QP功能1；ON/OF电压输入 2；比较端电容。
大屏幕液晶显示屏背光高压驱动电路原理及电路分析（一）
大屏幕液晶显示屏背光高压驱动电路原理及电路分析（一）2015-07-06 15:29:09作者：中华维修整理5181我要评论目前，液晶电视的销量和社会拥有量非常大，液晶电视的维修资料奇缺，而液晶电视的背光灯高压驱动电路又是液晶电视中极易发生故障的部位，它类似于CRT电视的行扫描电路，是高压大电流电路，其故障率不低于CRT电视的行扫描电路。
对该部分电路原理分析维修的资料很少，本文对于背光高压驱动电路的电路原理进行详尽分析，以帮助维修人员更加深刻的理解液晶电视背光灯驱动电路，为下一步维修打好基础。
海信32英寸液晶电视主要采用韩国三星屏和LG屏，现以三星屏背光驱动电路为例对该电路的组成形式、工作原理、控制方式进行介绍。
背光灯高压驱动电路在液晶电视机中，是一个单独工作，且启动／停止及亮度受控于CPu的电路组件。
其主要作用是点亮液晶屏内的背光灯管。
由于液晶屏的尺寸、灯管的数量、点亮电压、启动特性不相同，而背光灯高压驱动电路的输出特性必须与所驱动的液晶屏相匹配，因此，目前液晶屏背光灯高压驱动电路组件基本都是随屏配套提供。
同一尺寸的液晶屏型号不同，其背光灯高压驱动电路组件不同，不能互相换用。
背光灯高压驱动电路组件部分主要由振荡器、调制器、功率输出电路及保护检测电路组成。
在三星32英寸屏中，背光灯高压驱动电路中除功率输出部分和检测保护部分外，振荡器、调制器及控制部分采用一块ROHM公司(罗姆)的单片集成电路BD9884FV来完成(图1虚线框内)，功率输出采用N沟道和P沟道组合的MOSFET功率模块SP8M3来完成，保护检测由集成电路10393完成，输出电路有高压变压器、谐振电容、输出电流取样电路及背光灯管(CCFL)。
以上这几部分安装在一块电路板上，基本电路框图及工作过程如图1所示。
知识链接背光灯管：液晶电视的显示屏是属于被动发光型的显示器件，液晶屏自身不发光，它需要借助背光灯来实现屏的发光，所以液晶屏要显示色彩丰富的优质图像，要求背光灯的光谱范围要宽，接近日光色以便最大限度地展现自然界的各种色彩。
AOC 193P+型号电路图
1 6 11
5 10 15
２４脚ＤＶＩ接口
Pin No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Description TMDS Data 2TMDS Data 2+ TMDS Data 2/4 Shield TMDS Data 4TMDS Data 4+ DDC Clock DDC Data N.C. TMDS Data 1TMDS Data 1+ TMDS Data 1/3 Shield TMDS Data 3Pin No. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. DVI Connector layout Description TMDS Data 3+ +5V Power Ground (for+5V) Hot Plug Detect TMDS Data 0TMDS Data 0+ TMDS Data 0/5 Shield TMDS Data 5TMDS Data 5+ TMDS Clock Shield TMDS Clock + TMDS Clock -
ＬＣＤ显示器结构框图
Monitor Block Diagram
CCFL Drive.
Flat Panel and CCFL Backlight RS232 Connector
Power Board (Include Inverter and adapter)
Main Board
For white balance adjustment in factory mode
operating voltage-2.5v-5.5v
C315 A0 A1 A2 GND 1 2 3 4 0.1uF C317 0.1uF E C R337 4.7K 1/16W
友达10.4寸G104STN01.0液晶屏规格书-杭州旭虹科技
( V ) Preliminary Specifications( ) Final SpecificationsModule 10.4 Inch Color TFT-LCD Model Name G104STN01.0Customer Date Checked &Approved by Approved by DateGrace Hung 2013/08/16 Prepared byJohnson Lin 2013/08/16 General Display Business Division / AU Optronics corporationContents1. Operating Precautions (4)2. General Description (5)2.1 Display Characteristics (5)2.2 Optical Characteristics (6)3. Functional Block Diagram (9)4. Absolute Maximum Ratings (10)4.1 Absolute Ratings of TFT LCD Module (10)4.2 Absolute Ratings of Environment (10)5. Electrical Characteristics (11)5.1 TFT LCD Module (11)5.2 Backlight Unit (13)6. Signal Characteristics (14)6.1 Pixel Format Image (14)6.2 Scanning Direction (14)6.3 TFT-LCD Interface Signal Description (15)6.4 The Input Data Format (16)6.5 TFT-LCD Interface Timing (17)6.6 Power ON/OFF Sequence (18)7. Connector & Pin Assignment (19)7.1 TFT-LCD Signal (CN1): LVDS Connector (19)7.2 LED Backlight Unit (CN2): Driver Connector (19)7.3 LED Backlight Unit (CN4): Light bar Connector (19)8. Reliability Test Criteria (20)9. Mechanical Characteristics (21)9.1 LCM Outline Dimension (Front View) (21)9.2 LCM Outline Dimension (Rear View) (22)10. Label and Packaging (23)10.1 Shipping Label (on the rear side of TFT-LCD display) (23)10.2 Carton Package (23)11 Safety (25)11.1 Sharp Edge Requirements (25)11.2 Materials (25)11.3 Capacitors (25)11.4 National Test Lab Requirement (25)Record of RevisionVersion and Date Page Old description New Description1. Operating Precautions1) Since front polarizer is easily damaged, please be cautious and not to scratch it.2) Be sure to turn off power supply when inserting or disconnecting from input connector.3) Wipe off water drop immediately. Long contact with water may cause discoloration orspots.4) When the panel surface is soiled, wipe it with absorbent cotton or soft cloth.5) Since the panel is made of glass, it may be broken or cracked if dropped or bumped onhard surface.6) To avoid ESD (Electro Static Discharde) damage, be sure to ground yourself before handlingTFT-LCD Module.7) Do not open nor modify the module assembly.8) Do not press the reflector sheet at the back of the module to any direction.9) In case if a module has to be put back into the packing container slot after it was takenout from the container, do not press the center of the LED light bar edge. Instead, press at the far ends of the LED light bar edge softly. Otherwise the TFT Module may be damaged.10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate nortilt the Interface Connector of the TFT Module.11) TFT-LCD Module is not allowed to be twisted & bent even force is added on module in a veryshort time. Please design your display product well to avoid external force applying to module by end-user directly.12) Small amount of materials without flammability grade are used in the TFT-LCD module. TheTFT-LCD module should be supplied by power complied with requirements of Limited Power Source (IEC60950 or UL1950), or be applied exemption.13) Severe temperature condition may result in different luminance, response time and lampignition voltage.14) Continuous operating TFT-LCD display under low temperature environment may acceleratelamp exhaustion and reduce luminance dramatically.15) The data on this specification sheet is applicable when LCD module is placed in landscapeposition.16) Continuous displaying fixed pattern may induce image sticking. It’s recommended to usescreen saver or shuffle content periodically if fixed pattern is displayed on the screen.2. General DescriptionThis specification applies to the Color Active Matrix Liquid Crystal Display G104STN01.0composed of a TFT-LCD display, a driver and power supply circuit, and a LED backlight system. The screen format is intended to support SVGA (800(H) x 600(V)) screen and 16.2M (RGB 8-bits) or 262k colors (RGB 6-bits).LED driving board for backlight unit is included in G104STN01.0 and the LED unit is replaceable. All input signals are LVDS interface and compatible with G104SN02 V2.G104STN01.0 designed with wide viewing angle; wide temperature and long life LED backlight is well suited for industial applications. G104STN01.0 is a RoHS product.2.1 Display CharacteristicsThe following items are characteristics summary on the table under 25 ℃ condition: ItemsUnitSpecifications Screen Diagonal [inch] 10.4Active Area [mm] 211.2 (H) x 158.4 (V) Pixels H x V 800 x 3(RGB) x 600 Pixel Pitch [mm] 0.264 x 0.264 Pixel Arrangement R.G.B. Vertical Stripe Display ModeTN, Normally White Nominal Input Voltage VDD [Volt] 3.3 (typ.) Typical Power Consumption [Watt] 2.88WAll black pattern Weight [Grams] 365(Typ.)Physical Size [mm] 243.0(H) x 184.0(V) x 6.5(D)(Typ.) Electrical Interface 1 channel LVDS Surface Treatment Anti-glare, Hardness 3H Support Color16.2M / 262K colors Temperature Range OperatingStorage (Non-Operating) [o C] [o C]-20 to +80 -20 to +80 RoHS ComplianceRoHS Compliance2.2 Optical CharacteristicsThe optical characteristics are measured under stable conditions at 25 (Room Temperature):℃Item Unit Conditions Min. Typ. Max. RemarkWhite Luminance[cd/m2] I F = 50mA/1 LED Line (center point) 300 400 -1 Uniformity % 5 Points 65 75 -2,3 Contrast Ratio500 700 - 4[msec]Rising - 10 20 [msec] Falling- 5 15 Response Time[msec] Raising + Falling - 15 35 5 [degree] [degree] Horizontal (Right) CR = 10 (Left) 70 70 80 80 - - Viewing Angle[degree] [degree]Vertical (Upper) CR = 10 (Lower) 50 60 60 70 - - 6 Red x - TBD - Red y - TBD - Green x- TBD - Green y - TBD - Blue x - TBD - Blue y - TBD - White x 0.28 0.31 0.34 Color / ChromaticityCoordinates (CIE 1931)White y0.30 0.33 0.36 Color Gamut%50-Note 1: Measurement method Equipment Pattern Generator, Power Supply, Digital Voltmeter, Luminance meter (SR_3 or equivalent) Aperture1with 50cm viewing distance ∘Test Point CenterEnvironment < 1 luxModule Driving EquipmentNote 2: Definition of 5 points position (Display active area: 211.2mm (H) x 158.4mm (V))Note 3: The luminance uniformity of 5 points is defined by dividing the minimum luminance values by the maximum test point luminanceNote 4: Definition of contrast ratio (CR):Note 5: Definition of response time:The output signals of photo detector are measured when the input signals are changed from “White” to “Black” (falling time) and from “Black” to “White” (rising time), respectively. The response time interval isNote 6: Definition of viewing angleViewing angle is the measurement of contrast ratio 10, at the screen center, over a 180° horizontal and ≧180° vertical range (off-normal viewing angles). The 180° viewing angle range is broken down as below: 90° (θ) horizontal left and right, and 90° (Φ) vertical high (up) and low (down). The measurement direction is typically perpendicular to the display surface with the screen rotated to its center to develop the desiredMinimum Brightness of five pointsδW9 = Maximum Brightness of five points Contrast ratio (CR)=Brightness on the “White” stateBrightness on the “Black” statemeasurement viewing angle.3. Functional Block DiagramThe following diagram shows the functional block of the 10.4 inch color TFT/LCD module:4. Absolute Maximum Ratings4.1 Absolute Ratings of TFT LCD ModuleItem Symbol Min Max Unit Logic/LCD Drive Voltage Vin -0.3 +4.0 [Volt]4.2 Absolute Ratings of EnvironmentItem Symbol Min Max Unit Operating Temperature TOP -20 +80 [o C] Operation Humidity HOP 5 95 [%RH] Storage Temperature TST -20 +80 [o C] Storage Humidity HST 5 95 [%RH] Note: Maximum Wet-Bulb should be 39℃ and no condensation.5. Electrical Characteristics 5.1 TFT LCD Module5.1.1 Power SpecificationSymbol Parameter Min Typ Max Units RemarkVDD Logic/LCD Input Voltage 3.0 3.3 3.6 [Volt]I VDD LCD Input Current - 320 - [mA]VDD=3.3V at 60 HZ, all Black PatternP VDD LCD Power comsumption - - 1.5 [Watt] VDD=3.3V at 60 HZ, all Black Pattern I rush LCDLCD Inrush Current-1.06-[A] Note 1; VDD=3.3VBlack Pattern, Rising time=470usVDD rpAllowable Logic/LCDDrive Ripple Voltage- -100 [mV] p-pVDD=3.3V at 60 HZ, all Black PatternNote 1: Measurement condition:VDD rising time0V3.3V5.1.2 Signal Electrical CharacteristicsInput signals shall be low or Hi-Z state when VDD is off.Note: LVDS Signal Waveform.Symbol ItemMin. Typ.Max. Unit RemarkVTH Differential Input High Threshold - - 100 [mV] VCM=1.2V VTL Differential Input Low Threshold 100 - - [mV] VCM=1.2V ｜VID ｜Input Differential Voltage100 400 600 [mV] VICMDifferential Input Common Mode Voltage1.1251.251.375[V]VTH/VTL=+-100mV5.2 Backlight Unit5.2.1 Parameter guideline for LED backlightFollowing characteristics are measured under a stable condition using a inverter at 25℃. (Room Temperature): Symbol Parameter Min.Typ.Max.Unit RemarkVCC Input Voltage 10.8 12 12.6 [Volt]I VCC Input Current - 0.32 - [A] 100% PWM DutyP VCC Power Consumption - 2.88 - [Watt] 100% PWM DutyF PWM Dimming Frequency 200 - 20K [Hz]Swing Voltage 3 3.3 5.5 [Volt]Dimming duty cycle 5 - 100 %I F LED Forward Current-50 -[mA] Ta = 25o C- 27.2 - [Volt]I F = 50mA, Ta = -30o C V F LED Forward Voltage- 26.4 28.8 [Volt]I F = 50mA, Ta = 25o C- 25.6 - [Volt]I F = 50mA, Ta = 85o C P LED LED Power Consumption- 2.72 - [Watt]Operation Life 50,000 - - Hrs I F=50mA, Ta= 25o CNote 1: Ta means ambient temperature of TFT-LCD module.Note 2: VCC, I VCC, I rush LED, P VCC are defined for LED backlight.(100% duty of PWM dimming)Note 3: I F, V F are defined for one channel LED. There are two LED channel in back light unit.Note 4: If G104STN01.0 module is driven by high current or at high ambient temperature & humidity condition. The operating life will be reduced.Note 5: Operating life means brightness goes down to 50% initial brightness. Minimum operating life time is estimated data.6. Signal Characteristics6.1 Pixel Format ImageFollowing figure shows the relationship between input signal and LCD pixel format.1st2nd799th800th1stLine600thLin6.2 Scanning DirectionThe following figures show the image seen from the front view. The arrow indicates the direction of scan.Fig. 1 Normal scan (Pin4, DPS = Low or NC) Fig. 2 Reverse scan (Pin4, DPS = High)6.3 TFT-LCD Interface Signal DescriptionThe module using a LVDS receiver embaded in AUO’s ASIC. LVDS is a differential signal technology for LCD interface and a high-speed data transfer device.Input Signal Interface Pin No. SymbolDescription 1 VDD Power Supply, 3.3V (typical) 2 VDD Power Supply, 3.3V (typical) 3 GND Ground4 DPS Reverse Scan Function [H: Enable; L/NC: Disable]5 RxIN0-6 RxIN0+ LVDS receiver signal channel 0LVDS Differential Data Input (R0, R1, R2, R3, R4, R5, G0)7 GND Ground8 RxIN1- 9 RxIN1+ LVDS receiver signal channel 1LVDS Differential Data Input (G1, G2, G3, G4, G5, B0, B1) 10 GND Ground11 RxIN2- 12 RxIN2+ LVDS receiver signal channel 2LVDS Differential Data Input (B2, B3, B4, B5, DE)13 GNDGround14 RxCLKIN- 15 RxCLKIN+ LVDS receiver signal clock 16 GND Ground17 RxIN3- 18 RxIN3+ LVDS receiver signal channel 3, pin17=3.3V&pin 18=GND for 6bit LVDS InputLVDS Differential Data Input (R6, R7, G6, G7, B6, B7, RSV)19 RSVReserved for AUO internal test. Please treat it as NC.20SEL68 6/8bits LVDS data input selection [H: 8bits L/NC: 6bit]Note 1: Input Signals shall be in low status when VDD is off.Note 2: High stands for “3.3V”, Low stands for “0V”, NC stands for “No Connection”. Note 3: RSV stands for “Reserved”.6.4 The Input Data Format6.4.1 SEL68SEL68 =“Low” or “NC” for 6 bits LVDS InputSEL68 = “High” for 8 bits LVDS InputNote1: Please follow PSWG.Note2: R/G/B data 7:MSB, R/G/B data 0:LSBSignal Name DescriptionRemarkR7R6R5R4R3R2R1R0Red Data 7 Red Data 6 Red Data 5 Red Data 4 Red Data 3 Red Data 2 Red Data 1 Red Data 0 Red-pixel DataFor 8Bits LVDS input MSB: R7 ; LSB: R0For 6Bits LVDS input MSB: R5 ; LSB: R0G7G6G5G4 G3G2G1 G0Green Data 7 Green Data 6 Green Data 5 Green Data 4Green Data 3 Green Data 2 Green Data 1Green Data 0 Green-pixel DataFor 8Bits LVDS input MSB: G7 ; LSB: G0For 6Bits LVDS input MSB: G5 ; LSB: G0B7 B6 B5 B4 B3 B2 B1 B0 Blue Data 7 Blue Data 6 Blue Data 5 Blue Data 4 Blue Data 3 Blue Data 2 Blue Data 1 Blue Data 0 Blue-pixel DataFor 8Bits LVDS input MSB: B7 ; LSB: B0For 6Bits LVDS input MSB: B5 ; LSB: B0 RxCLKIN LVDS Data ClockDE Data Enable SignalWhen the signal is high, the pixel data shall be valid to be displayed.Note: Output signals from any system shall be low or Hi-Z state when VDD is off.NS-like format6.5 TFT-LCD Interface Timing6.5.1 Timing CharacteristicsSignal Symbol Min. Typ. Max. Unit Clock Frequency 1/ T Clock 30 40 50 MHzPeriod T V 608 628 1024 Active T VD -- 600-- Vertical SectionBlankingT VB 8 28 424 T Line Period T H 960 1056 1060Active T HD -- 800 -- Horizontal SectionBlankingT HB 160 256 260 T ClockFrame RateF 506075Hz Note : DE mode.6.5.2 Input Timing DiagramDOTCLKDEHT HBDET VDInput Timing Definition ( DE Mode)Input Data Invaild Data Invaild Data6.6 Power ON/OFF SequenceVDD power and lamp on/off sequence is as below. Interface signals are also shown in the chart. Signals from any system shall be Hi-Z state or low level when VDD is off.Power ON/OFF sequence timingValue UnitsParameterMin. Typ. Max.T10.5 - 10 [ms]T2 30 40 50 [ms]T3 200 -- -- [ms]T4 0.5 -- 10 [ms]T5 10 - - [ms]T6 10 - - [ms]T7 0 - - [ms]T8 10 - - [ms]T9 -- -- 10 [ms]T10 110 -- -- [ms]T11 0 16 50 [ms]T12 - - 10 [ms]T13 1000 - - [ms]The above on/off sequence should be applied to avoid abnormal function in the display. Please make sure to turn off the power when you plug the cable into the input connector or pull the cable out of the connector.7. Connector & Pin AssignmentPhysical interface is described as for the connector on module. These connectors are capable of accommodating the following signals and will be following components.7.1 TFT-LCD Signal (CN1): LVDS ConnectorConnector Name / Designation Signal ConnectorManufacturer STM or compatibleConnector Model Number MSB24013P20HA or compatibleAdaptable Plug P24013P20 or compatiblePin No. Symbol Pin No. Symbol1 VDD2 VDD3 GND4 DPS5 RxIN0-6 RxIN0+7 GND 8 RxIN1-9 RxIN1+ 10 GND11 RxIN2- 12 RxIN2+13 GND 14 RxCKIN-15 RxCKIN+ 16 GND17 RxIN3- 18 RxIN3+19 RSV 20 SEL687.2 LED Backlight Unit (CN2): Driver ConnectorConnector Name / Designation Lamp ConnectorManufacturer ENTERY or compatibleConnector Model Number 3808K-F05N-12R or compatibleMating Model Number H208K–P05N-02B or compatiblePin No. symbol descriptionPin1 VCC 12V inputPin2 GND GNDPin3 On/OFF 5V-ON,0V-OFFPin4 Dimming PWMPin5 NA7.3 LED Backlight Unit (CN4): Light bar ConnectorConnector Name / Designation Lamp ConnectorManufacturer ENTERY or compatibleConnector Model Number H208K–P03N-02B or compatibleMating Model Number(CN3) 3808K-F03N-12R or compatiblePin No. symbol description ColorPin1 H LED anode RedPin2 L LED cathode WhitePin3 L LED cathode Black8. Reliability Test CriteriaItems Required Condition Note Temperature Humidity Bias 40℃, 90%RH, 300 hoursHigh Temperature Operation 80℃, 300 hoursLow Temperature Operation -20℃, 300 hoursHot Storage 80,℃ 300 hoursCold Storage -20,℃ 300 hoursThermal Shock Test -20/℃ 30 min, 60/℃ 30 min, 100cycles, 40℃minimun ramp rateHot Start Test 80℃/ 1Hr min. power on/off per 5 minutes, 5 timesCold Start Test -20℃/ 1Hr min. power on/off per 5 minutes, 5 timesShock Test (Non-Operating) 50G, 20ms, Half-sine wave, ( ±X, ±Y, ±Z)Vibration Test (Non-Operating) 1.5G, (10~200Hz, Sine wave)30 mins/axis, 3 direction (X, Y, Z)On/off test On/10 sec, Off/10 sec, 30,000 cyclesESD Contact Discharge: ± 8KV, 150pF(330Ω ) 1sec, 8 points, 25 times/ pointAir Discharge: ± 15KV, 150pF(330Ω ) 1sec, 8 points, 25 times/ pointNote 1EMI 30-230 MHz, limit 40 dBu V/m, 230-1000 MHz, limit 47 dBu V/mNote1: According to EN61000-4-2, ESD class B: Some performance degradation allowed. No data lost Self-recoverable. No hardware failures.Note2:Water condensation is not allowed for each test items.Each test is done by new TFT-LCD module. Don’t use the same TFT-LCD module repeatedly for reliability test. The reliability test is performed only to examine the TFT-LCD module capability.To inspect TFT-LCD module after reliability test, please store it at room temperature and room humidity for 24 hours at least in advance.G104STN01.09. Mechanical Characteristics工业液晶屏：ｗｗｗ．ｈｚｘｕｈｏｎｇ．ｃｏｍ杭州旭虹科技有限公司G104STN01.09.2 LCM Outline Dimension (Rear View)工业液晶屏：ｗｗｗ．ｈｚｘｕｈｏｎｇ．ｃｏｍ杭州旭虹科技有限公司G104STN01.010. Label and Packaging10.1 Shipping Label (on the rear side of TFT-LCD display)10.2 Carton PackageNote:Max capacity ：20 TFT-LCD module per cartonMax weight: 11.5 kg per cartonOutside dimension of carton: 477mm(L)* 290mm(W)*360mm(H)Pallet size ： 1180 mm * 980 mm * 135mmBox stackedModule by air ：(2 *4) *4 layers ，one pallet put 32 boxes ，total 640pcs module Module by sea ：(2 *4) *4 layers + (2 *4) *1 layers , two pallet put 40 boxes ，total 800pcs module Module by sea_HQ ：(2 *4) *4 layers+(2 *4) *2 layers, two pallet put 48 boxes, total 960pcs module工业液晶屏：ｗｗｗ．ｈｚｘｕｈｏｎｇ．ｃｏｍ杭州旭虹科技有限公司杭州旭虹科技有限公司11 Safety11.1 Sharp Edge RequirementsThere will be no sharp edges or comers on the display assembly that could cause injury.11.2 Materials11.2.1 ToxicityThere will be no carcinogenic materials used anywhere in the display module. If toxic materials are used, they will be reviewed and approved by the responsible AUO toxicologist.11.2.2 FlammabilityAll components including electrical components that do not meet the flammability grade UL94-V1 in the module will complete the flammability rating exception approval process.The printed circuit board will be made from material rated 94-V1 or better. The actual UL flammability rating will be printed on the printed circuit board.11.3 CapacitorsIf any polarized capacitors are used in the display assembly, provisions will be made to keep them from being inserted backwards.11.4 National Test Lab RequirementThe display module will satisfy all requirements for compliance to:UL 1950, First EditionU.S.A. Information Technology Equipment杭州旭虹科技有限公司。
友达T420HW02 V.0背光板通病
谢谢!
四、友达T420HW02 V.0背光板的维修 背光板型号:1942T04001/2 VIT872.50/1 实物如下图
故障现象:背光板不定时黑屏 通过电路实物结合芯片资料找到CP4和CP5两个短路点。
通过实验当短路这两个点时频率降低,断开时频率上 升,实测不定时黑屏的板子工作频率是59K以上,当短 路一个点后降低到55-56K时长时间试机多日观察未 再出现黑屏现象.后来用此法在郑州范围内已经解决 了8台此现象故障,顾客均未反应再出现黑屏了.如下 图!!!请各经营部再遇到此屏时请安照此法处理如还 不行再换屏或者背光板!!
LCD电路原理、应用与维修
+5V VCC
U1
PWM IC
L1
D1
R1
GD S
Q1
R2
+12V
C1
RL
+12.4V D1 +12V
L1
+7.4V C1
RL
+5V
R3 Boost拓扑结构
液晶显示屏电路原理、应用与维修
1.13 极性反转型DC-DC转换器（Buck-Boost型）
LCD屏显部分的负压产生电路，升压、降压、 极性相反。
液晶显示屏电路原理、应用与维修
在LCD电路中，常用低压差线性稳压器（LDO），
常用型号：1804、1117，分固定电压和可调电压
输出。
+5V IN 1084 OUT
+3.3V
GND
R1 R2
液晶显示屏电路原理、应用与维修
1.1 开关稳压电源 功率器件工作在开关状态，由MOSFET或三极
管作为开关，有PWM（脉冲宽度调制）和（PFM 脉冲频率调制）两种稳压方式，输出电流大，稳压 精度高，LCD驱动板、高压板、屏显电路和电源适 配器都采用PWM稳压电路。
3 U1 7
45 8
R5 R7
D2 R14
D5
R11
R10
R9
C1
Q7
Q5 C6
Q6
C7 T
灯管
R12 E2 C2
D3 D4
R13
VREF
U+ +
U–
U1 –
UOUT G
D S Q1
RL：负载电路 R1、R2：反馈电阻 VREF：基准电压，一般为1.25V
R2 10k
友达B140XW01 V8 PDF
LED Backlight with driving circuit design
Customer
Date
Checked & Approved by
Date
Approved by
www.DataSheet.co.kr
Bonnie Chen
Date
10/28/2009
7. Panel Reliability Test ............................................................ 22
7.1 Vibration Test ....................................................................................................................................22 7.2 Shock Test .....................................................www..DataS.heet.c.o.kr.................................................................................22 7.3 Reliability Test...................................................................................................................................22
3 of 30
LED显示屏专用电源电路图及工作原理
TL494电路图的工作原理，主要是各元件的功能整流器之前的不用说了吧？494 脉宽调制输出至V3、V4。
494 的各脚功能请看其pdf资料。
1 脚是比较器+输入端，接电压监测。
如图，VR1 是输出电压调整。
V3、V4 是功率推动三极管。
T2是推动变压器，将推动电压提高以驱动末级功率管，末级工作在开关状态。
V2、V3 接成推挽功率放大。
VD5、VD6是反峰保护二极管。
R3、C8是尖峰吸收网络。
VD9、VD10、C9 组成全波整流滤波，给494供电。
T1 的右部分就是低压部分了。
整流滤波输出，没什么特别的。
220V交流电经VD1整流，C5,C6滤波得到300V左右直流电。
此电压经R1，R2分压后约150V给C7充电，经T1高压8，9脚绕组，T2绕组8，6脚,V2等形成启动电流。
T2反馈绕组7，9绕组，10，6绕组产生感应电压，使V1，V2轮流导通。
因此在T1低压供电绕组（6，7，13）产生电压，经VD9,VD10整流，C9滤波，给TL494,,V3,V4等供电。
此时输出电压较低。
TL494启动后其8脚，11脚轮流输出脉冲，推动V3,V4，经T2反馈给绕组（7.9，10.6）激励V1,V2。
使V1,V2,由自激状态转入受控状态。
T2输出绕组电压上升，此电压经R31,R29,R30，VR1分压后反馈给TL494的1脚（电压反馈）使输出电压稳定。
J1，J2是电流取样电阻，充电或输出时J1，J2产生压降。
此电压经R36反馈给TL494的15脚（电流反馈）使充电或输出电流恒定。
大体原理已经说清楚了，具体原理还有什么不明白追问，我就不一一说明每个元件的作用了。
R8,R9，R40 是V2的偏置电阻，VD8反馈整流，经R10，R11到V2基极，加速V2导通，C11是加速电容，可以加速V2的导通和截止。
V1的元件功能同V2。
其他的应该没有什么问题了吧。
能帮到你很高兴。
评论|。
笔记本led屏40针接口定义
笔记本led屏40针接口定义产品规格 B140XTN02.0文件版本:0.1 1366×768/60赫兹针1 数控无连接(保留)2 VDD 计算机电源，3.3V(典型值)3 VDD 计算机电源，3.3V(典型值)4 DVDD DDC 3.3Vpower5 数控无连接(保留)6 SCL DDC时钟7 SDA DDC数据8 Rin0- -LVDS差分数据输入(R0-R5，G0)9 Rin0 + + LVDS差分数据输入(R0-R5，G0)10 GND 地面11 RIN1- -LVDS差分数据输入(G1-G5，B0-B1)12 RIN1 + + LVDS差分数据输入(G1-G5，B0-B1)13 GND 地面14 RIN2- -LVDS差分数据输入(B2-B5，HS，VS，DE)15 RIN2 + + LVDS差分数据输入(B2-B5，HS，VS，DE)16 GND 地面17 CLKIN- -LVDS差分时钟输入18 CLKIN + + LVDS差分时钟输入19 数控无连接(保留)20 数控无连接(保留)21 数控无连接(保留)22 GND 地23 数控无连接(保留)24 数控无连接(保留)25 GND 地26 数控无连接(保留)27 数控无连接(保留)28 GND 地29 数控无连接(保留)30 数控无连接(保留)31 VLED_GND LED接地32 VLED_GND LED接地33 VLED_GND LED接地34 数控无连接(保留)35 PWM 系统的PWM信号输入36 LED_EN LED使能引脚(+3 V输入)37 数控无连接(保留)38 VLED LED电源6V-21V39 VLED LED电源6V-21V40 VLED LED电源6V-21V其他笔记本13.1、15.4等LED背光屏接口基本相同，仅供参考检修使用。
文案编辑词条B 添加义项 ?文案，原指放书的桌子，后来指在桌子上写字的人。
液晶屏逻辑电路板维修图
V260B1-C01 配机芯有：8K60MAX1518包括一个高性能升压调节器、两个线性稳压控制器以及大电流运算放大器，用于有源矩阵薄膜晶体管（TFT ）液晶显示器（LCD ）。
器件还包括一个逻辑控制、具有可调节延时的高压开关。
V315B3-C01 配机芯有8M19TPS65161的20、21、22：电源输入Vin; 此IC 与外围电配合可产生几路电压：VGH ：23V V AAP ：13.5V VGL ：负5V VDA ： VON ： VOFF ： VLOGIC ：3.3V 等32寸奇美屏驱动板（屏供电12V ）V320B1-C03 配机芯有：8M10FP5138：电源管理芯片，升压、降压、升降压转换IC ，驱动能力强，可以很好的提供LCD 屏正负偏设计方案，各组电压输出稳定，还可以适用于7—12寸LED 液晶屏背光升压垣流驱动。
有短路保护、开路保护、软启动功能，工作电压1.8—15V ，工作电流5.5mA 。
1脚：FB 反馈 2脚：SCP 保护/软启动 3脚：VCC 供电 4脚：CTL 控制 5脚：OUT 输出 6脚：GND 地 7脚：OSC 振荡 8脚：COMP 补偿V296W1-C1，X7 配机芯有：8TG5V296W1-C1逻辑板电路主要有三大部分组成：1.由U4（CM2651B-KQ ）为核心的时序与逻辑控制电路，主要功能是将串行的LVDS 信号变成并行的控制信号，用于薄腊晶体管的控制或驱动；2.由U7—U11（HX8904TA 、HX8904SA ）为核心的伽玛放大电路，主要是将伽玛信号进行适当的放大，控制薄膜晶体管，实现画面对比度的调整；3.由UP1（FA3269A V ）为核心的DC-DC 变换电路，主是是将主板送来的5V 供电变成VGH （20V ）、VDA （15V ）、VGL （—5V ）、V5V （5V ）、VDD （3.3V ）等等，用于屏驱动供电，此逻辑板损坏的最多的地方就是这部分，易损坏元件为UP1、QP5、DP3、UP2、RP37、LP2电感等等。
数位电子乙级四位数多工显示器子电路板电路详解
2020/3/14
18
B=1 A=1 四對一多工器輸入接法
B=1 A=1 輸出至測台的數值為 『個』
查 74LS155 真值表 得
B(P16) A(P14) 輸出
0
0 Y0 (千)
0
1 Y1 (百)
1
0 Y2 (十)
1
1 Y3 (個)
d0 1C0 c0 1C1 b0 1C2 a0 1C3
LSB 1Y = 1C3 P6
docin/sundae_meng
2020/3/14
7
鍵盤掃瞄裝置 時脈暨除頻電路設計解析 P6-17
念慈文教技藝推廣協會
docin/sundae_meng
2020/3/14
8
數位電子鐘 24模計數器電路設計詳解 P7-15
念慈文教技藝推廣協會
docin/sundae_meng
2020/3/14
2019 數位電子乙級 四位數多工顯示器 子電路板電路詳解
念慈文教技藝推廣協會
docin/sundae_meng
計數快慢
掃描快慢
1
四位數多工顯示器 已裝置部分之電子電路圖 P5-6
P16 P14 00 01 10 11
CLR
個 十 百 千
個十百千計數器 二位元計數器
念慈文教技藝推廣協會
docin/sundae_meng
1C1 1C2
1Y = 1C0 P10
1C3
2C0
2C1 2C2
2Y = 2C0 P12
2C3 BA
MSB
00
念慈文教技藝推廣協會
docin/sundae_meng
2020/3/14
13
四對一多工器電路設計詳解 P5-18
液晶屏及其附属电路维修word资料11页
任务2.3液晶屏及其附属电路的维修知识能力随着平板电视机的大量上市，液晶电视机在平板彩电中占有重要角色。
液晶屏是液晶电视机内部最为关键的部件，对液晶电视机的性能和价格具有关键性的作用。
2.3.1 液晶显示器件1．液晶显示器优缺点（1）优点1）与传统的显像管相比，液晶电视机信号不失真，视觉不疲劳，没有射线造成的健康损害；节约能源，耗电量是同样大小尺寸显像管电视机耗电量的62%；寿命长，采用新开发的长寿命液晶背灯，大约可以使用10年(按照每天使用16小时计算)而不用更换；清晰度高，基本不反光。
2）轻薄便携。
传统显示器由于使用阴极射线管，必须通过电子枪发射电子束到屏幕，因而显像管的管颈不能做得很短，当屏幕增加时也必然增大整个显示器的体积。
液晶则通过显示屏上的电极控制液晶分子状态来达到显示目的，即使屏幕加大，它的体积也不会成正比的增加，而且在重量上比相同显示面积的传统显示器要轻得多，液晶电视机的重量大约是传统电视的1/3。
3）色彩丰富。
液晶电视机拥有16.7百万的色彩，画面层次分明，颜色绚丽真实。
4）分辨率大，清晰度高。
液晶显示器一开始就使用纯平面的玻璃板，其平面直角的显示效果比传统显示器看起来好得多。
不过在分辨率上，液晶显示器理论上可提供更高的分辨率，但实际显示效果却差得多（存在一个最佳分辨率的问题），虽然液晶电视机可以克服扫描线的抖动和闪烁，但由于液晶本身的缝隙较粗，会造成图像如网格般的收看效果。
所以液晶屏幕的最佳分辨率一般可达1024×768（已经足够收视）。
而传统显示器在较好显示卡的支持下达到完美的显示效果。
5）绿色环保。
液晶显示器根本没有幅射可言，而且只有来自驱动电路的少量电磁波，只要将外壳严格密封即可排除电磁波外泄。
所以液晶显示器有称为冷显示器或环保显示器。
液晶电视机不存在屏幕闪烁现象，不易造成视觉疲劳。
6）耗电量低，使用寿命长。
按照行业标准、使用时间为每天4.5小时的年耗电量换算，用30英寸液晶电视机替代32英寸显像管电视，每年每台可节约电能71千瓦。