Sanyo TV LCD training manual

Training Manual Principle of LCD Display FILE NO CONTENTS Pages Construction of LCD Display - - 1-1 Principle of LCD Display - 1-2 Construction of LCD Display - - 1-3 Main Component of LCD Display - - Principle of Liquid Crystal - - 2-1 Liquid Crystal - 2-2 Rubbing-process - - 2-3 Operation of Liquid Crystal Principle of LCD - - 11 3-1 Operation of Polarized Board for LCD Panel (Shutter) - 3-2 Operation of Alignment Film - 10 3-3 Operation of LCD Panel 10 - 11 3-4 Transparent Electrode 11 Type of LCD Display Construction 12 - 13 4-1 Twisted Nematic (TN) Type 12- 13 4-2 Super TN (STN) Type 12- 13 4-3 Triple STN (TSTN) Type / Film STN (FSTN) Type - 12- 13 System of LCD Display 14 - 20 5-1 Dot-Matrix System - 14 5-2 Colorization 15 5-3 Drive System 16 5-4 Passive Matrix System 16 - 17 5-5 Active Matrix System 18 - 19 5-6 Drive of Active Matrix System - 19 - 20 Improvement Technology of LCD Display 21 - 27 6-1 Subject of LCD Display - 21 6-1-1 Angle of View - 21 6-1-2 Response Characteristic - 21 6-2 Angle of View 22 6-3 Multi-Domain System - 23 6-4 MVA (Multi-domain Vertical Alignment) System - 24 6-5 IPS (In-Plain Switching) System - 25 6-6 Optically Compensated Film 26 6-7 OCB (Optically Compensated Birefringence) System 26 6-8 Improvement of Response Speed - 27 6-8-1 Inpulse System - 27 6-8-2 FFD (Feed Forward Driving) System - 27 Appendix - 28 - 31 7-1 Backlight 28 7-2 LVDS Circuit - 29 7-3 Block Diagram Example 30 - 31 REFERENCE NO TI5110LCD ■ Construction of LCD Display Training Manual Principle of LCD Construction of LCD Display 1-1 Principle of LCD Display The LCD (Liquid Crystal Device) Display is used to display the electric signal, converted from picture data similar to a CRT display The transistor (TFT) switched by the electric signal changes the transmission to light in small picture elements (pixels) of the LCD The LCD display makes the picture by grouping these elements of each RGB color 1-2 Construction of LCD Display LCD Display Liquid Crystal is packed between the board modules (TFT and Common) and the LCD panel (or LCD shutter) is constructed A back light is attached to the LCD panel for LCD Display Board Module (Common Electrode) The Common Electrode consists of a polarized board, a color filter, and a transparent electrode on a glass plate An alignment film is formed on the transparent electrode Board Module (TFT Electrode) The TFT Electrode consists of a polarized board and a transparent electrode (pixel electrode and drive transistor) on a glass plate An alignment film is formed on the transparent electrode Backlight A fluorescent light is used for the Backlight ✐ TFT: Thin Film Transistor ✐ LCD Panel and LCD Shutter: They are the same things, but in the explanation LCD panel is used for structure and LCD shutter is used for function -2- Construction of LCD Display Training Manual Principle of LCD Backlight Polarized Board Glass Plate Pixel (Picture Element) Transparent TFT Electrode (Pixel, TFT) Transparent Electrode (Common) Color Filter Glass Plate Polarized Board Board Module (TFT side) LCD Layer Board Module (Common side) The light of each picture element is transmitted by switching the drive transistor (TFT) on and off Note: Alignment film is not shown in this figure Fig Construction of LCD Display (Transparent Type TFT LCD) -3- Construction of LCD Display Training Manual Principle of LCD 1-3 Main component of LCD Display LCD Shutter Supplying voltage to the transparent electrodes between the pixel and common sides changes the arrangement of liquid crystal By assembling two polarized boards, the transfer of light from the backlight can be controlled by the transparent ratio of the LCD Shutter Liquid Crystal Liquid Crystal is a material whose state is between a solid and a liquid It has both characteristics of solids and liquids, and generally it is a white turbid liquid Its molecules are normally arranged comparatively opaque and change to transparent with the application of voltage or heat Transparent Electrode (Film) An LCD shutter is operated by supplying voltage derived from the video signal Transparent film is used for its electrode Alignment Film This is a film for arranging liquid crystal molecules and is made of Polymid resin Polarized Board The light with a specified direction passes through a polarized board Drive Transistor The thin film transistor (TFT) is used to drive the LCD shutter of each pixel Color Filter It is a filter with three colors (R, G, B) arranged for each pixel Backlight Liquid crystal does not emit light A light source is needed for display The light source placed on the reverse side of the LCD panel is called “Backlight.” -4- Construction of LCD Display Training Manual Principle of LCD Backlight Polarized Glass Board Plate Transparent Electrode (Pixel, TFT) Module (Back) LCD Shutter Alignment Film Liquid Crystal Alignment Film Transparent Electrode (Common) Color Filter Glass Plate Polarized Board LCD Layer Module (Front) Fig Construction of LCD Display (Cross Section) Backlight LCD Panel (LCD Shutter) LCD Display LCD Module TFT Display Drive Circuit (with IC) -5- Fig Assembly of LCD Display ■ Principle of Liquid Crystal Training Manual Principle of LCD Principle of Liquid Crystal 2-1 Liquid Crystal What is Liquid Crystal? Liquid Crystal is a material whose state is between a solid and liquid It has characteristics of both solids and liquids, and generally is a white turbid liquid Its molecules are normally arranged comparatively opaque and change to transparent with the application of voltage or heat Almost all the materials consist of an organic compound taking the form of a slender stick or a flat plate There are three types of liquid crystal as shown in Fig 4, and they depend on the construction and arrangement of molecules Generally Nematic liquid crystal is used for the display apparatus (a) Smectic Molecules are in layers and arranged parallel to each other The center of gravity is arranged at random in the layer (b) Nematic Molecules are not in layers They are arranged parallel The center of gravity is able to move freely to the major axis (c) Cholesteric Molecules are in layers and arranged parallel The arranging direction of the major axis for the neighboring layers is shifted gradually In order to use liquid crystal for display, it is necessary to regularly arrange the molecules of Nematic (Rubbing-process) 2-2 Rubbing-process After chemicals for arranging are put on the glass plate, they are hardened, and then the surface on the plate is rubbed with a cloth to fix the direction of the gaps that are made The arranging direction of molecules is settled in the gaps This process is used to change the characteristics so the molecules that touch the rubbed surface are arranged to the major axis of the rubbed direction This thin film on the glass plate is called “Alignment film.” -6- Principle of Liquid Crystal Training Manual Principle of LCD (a) Smectic (b) Nematic (c) Cholesteric Fig Liquid Crystal Liquid Crystal Molecule Natural Condition Arranging Rubbing Direction Alignment Film Fig Rubbing-Process -7- Principle of Liquid Crystal Training Manual Principle of LCD 2-3 Operation of Liquid Crystal The chemistry substance required for liquid crystal material is one that reacts so that the arrangement direction is changed according to an applied electric field In the LCD display, a liquid crystal is placed between two electrodes When the voltage is supplied between them, an electric field is generated in the liquid crystal, and liquid crystal molecules are moved and arranged The Backlight applied to the liquid crystal is either passed or blocked according to the arrangement of the molecules If an electric field from an external source is applied to liquid crystal, electric dipoles will be generated that will react to the intensity and direction of the electric field Through the operation of these electric dipoles and the electric field, the power changing direction of liquid crystal molecules is generated Therefore, according to an external electric field, liquid crystal molecules move and change direction from horizontal to vertical Transparent Electrode Electric Field Liquid Crystal Electric Field Liquid Crystal Molecule Electric Dipole Fig Operation of Liquid Crystal -8- ■ Principle of LCD Training Manual Principle of LCD Principle of LCD 3-1 Operation of Polarized Board for LCD Panel (Shutter) Light is an electromagnetic wave that is oscillating at right angles to the direction of advance In fact, the oscillating directions of all light is mixed A polarized board can let only the light in the specific direction pass from the light with which these various oscillating directions were mixed Therefore, only the light of the same direction as the polarization direction of a polarized board can be taken out by letting the light pass through this polarized board That is, if the oscillating direction of light and the direction of a polarized board are in agreement, the light will pass through a polarized board Moreover, if the direction of a polarized board differs from the oscillating direction of light, the light cannot pass through a polarized board When the oscillating direction of a polarized board and light are shifted 90º(right-angled), the light is blocked completely The light passes and looks bright if the two boards are in the same direction when looking at two polarized boards in piles, however, if shifted at right-angles, the light is blocked and looks dark Oscillating direction of light Oscillating direction of light Polarized Board The direction of a polarized board differs from the oscillating direction of light The oscillating direction of light and the direction of a polarized board are in agreement Passage Light The two boards are the same directions White Fig Operation of Polarized Board Interception Light The two boards are shifted right-angled Black -9- Fig Operation of Polarized Board Principle of Liquid Crystal Training Manual Principle of LCD 3-2 Operation of Alignment Film Liquid crystal is inserted into alignment films of an upper and lower plate that have the direction of grooves shifted by 90º on the LCD display The liquid crystal molecules of upper alignment plate are arranged along with the upper alignment film The liquid crystal molecules of lower alignment plate are arranged along with the lower alignment film The liquid crystal layer between these alignment films is twisted little by little and is arranged so that a spiral is formed Light entering through the first alignment plate will have its oscillating direction twisted 90º by the liquid crystal layer between the alignment films Now the direction of oscillation is aligned with the second alignment plate and the light will pass through Alignment Plate Alignment Film Direction of Groove Liquid Crystal Molecule By the upper-and-lower alignment films, spirally, a liquid crystal molecules are twisted 90º and arranged Alignment Film Direction of Groove Fig Operation of Alignment Film 3-3 Operation of LCD Panel In the LCD panel, a liquid crystal is inserted and enclosed between two glass plates The polarized board, transparent electrode, and the alignment film are formed on these glass plates The light can be passed or blocked by supplying voltage or not to this LCD panel In the condition (Switch-Off) that the voltage is not supplied, the liquid crystal molecules are twisted 90º sideways and arranged spirally The oscillating direction of the light that passed the upper polarized board is changed by the twisted liquid crystal molecule arrangement Therefore, the direction of a polarized board and the oscillating direction of the light which is shifted 90º and arranged become the same, and this light can now pass through a polarized board This is the liquid crystal shutter-on condition and an LCD panel (LCD shutter) passes the light -10- System of LCD Display Training Manual Principle of LCD 5-5 Active Matrix System In the active matrix system, a switch element is attached for every pixel at the intersection of the X and Yelectrodes of a passive matrix system Each pixel is now controlled by the switch element (active element) Since the switch for each pixel is turned On and Off independently, the response speed is increased Thin Film Transistor (TFT) is used for the switch element and is attached on the glass board The LCD display using this TFT is called “TFT LCD display” The upper electrode for the whole pattern is formed on the upper glass plate and is called the “Common Electrode” A pixel electrode (pixel pattern), TFT (switch element) which drives a pixel electrode, and X electrode for gate input and Y electrode for source input of TFT are formed on the lower glass plate In this structure, the electric field is generated in the area between the pixel electrode and the common electrode, and the LCD shutter for pixel is operated When an electric signal (voltage) is supplied to the Y and X electrode of TFT, TFT is turned On, and the liquid crystal molecules are operated as a light switch Refer to Fig 17 (Address X1 and Y0) Glass Plate (Upper) COMMON Electrode Pixel Electrode (Pixel Pattern) Liquid Crystal Layer X Electrode Glass Plate (Lower) Y Electrode Equivalent Circuit (TFT) Liquid Crystal Y0 Y Electrode Y1 COMMON Electrode Matrix System Equivalent Circuit (Switch) COMMON COMMON COMMON Electrode Fig 16 Structure of Active TFT (Switch Element) Liquid Crystal Pixel Electrode Drain Drain X1 X Electrode X1 X2 TFT Pixel Electrode X1 Gate Gate Source Source Y0 TFT By TFT, the shutter of a pixel at the address (X1, Y0) is turned On or Off -18- Y0 Switch (On / Off) Fig 17 Equivalent Circuit of Active Matrix System System of LCD Display Y0 Y1 Training Manual Principle of LCD Y2 Y3 X0 TFT (Switch) Liquid Crystal COMMON Electrode X1 X2 X3 The LCD shutter is operated by TFT at the address (X1, Y0) Fig 18 Structure of TFT Matrix The amplification operation of a transistor is used for the TFT switch in the active matrix system In this system, switching speed is unified over the whole display, increasing drive response speed as compared with the passive matrix system Therefore, TFT LCD display (active matrix system) is adopted for the highly efficient display, which can provide the response speed required for big screens or quickly moving pictures However, further response speed is needed for high definition LCD television This will be described later 5-6 Drive of Active Matrix System Voltage to liquid crystal The TFT LCD display consists of a matrix of n lines of X direction (X0 - Xn-1) and of n rows of Y direction (Y0 - Yn-1) The line of X direction is called the “gate line” and the line (row) of Y direction is called the “data line.” First, the scan is started from the pixel address Since the time for the drive voltage to reach its required value is shorter in the active matrix system, (X0, Y0), and when the address (X0, Yn-1) is the response time of the display becomes quicker selected the scan of X0 line is completed Next, all the pixels from X1 line to Xn-1 line are scanned in Active Matrix System sequence, and the final address is (Xn-1, Yn-1) The operation of selected pixel address (X1, Y2) is explained below First, (signal) voltage is supplied to X1 line (gate of TFT), next voltage is supplied to Y2 row (source of TFT), and the address of the intersection of X1 Passive Matrix System line and Y2 row is selected and its TFT is turned On or Off However, just switching the TFT on and off will not change the brightness of the screen The brightness of a screen is changed by controlTime ling the voltage of a data line (Y row) Fig 19 shows the voltage characteristic of the matrix sysFig 19 Voltage Characteristic of Matrix System tem -19- System of LCD Display Training Manual Principle of LCD In Fig 20, the voltage of the data line (Y2) is supplied in the positive direction to a common electrode (DC drive) In practice a uniform AC voltage is supplied to the common electrode (AC drive) to prolong the life of the liquid crystal Data Line Drive Circuit (Y row) Y0 Y1 Y2 Y3 • • • Yn-1 X0 X1 X2 X3 Pixel Electrode Glass Plate (Common) ••• Liquid Crystal Xn-1 Glass Plate (TFT) Gate Line Drive Circuit (X line) TFT COMMON X Direction Variable Voltage Video Data Processor Y Direction Timming Controller (Scan Converter) Power Circuit COMMON X1 Y2 TFT: On (X1, Y2) Brightness of Screen Y2 COMMON TFT: On Y2 In practice, driven by AC signal to COMMON (AC Drive) Y2 TFT: Off Y2 Fig 20 LCD Drive Circuit (Normally White Type) -20- ■ Improvement Technology of LCD Display Training Manual Principle of LCD Improvement Technology of LCD Display 6-1 Subject of LCD Display 6-1-1 Angle of View Angle of view means the normal visible range (angle) of a screen In an LCD display, the angle of view is narrow compared with a CRT or PDP (Plasma Display Panel) The viewing angle of the typical TN type LCD display is about 100º However with the new improved technology that has been developed the angle of view for LCD display has increased to 160º or 170º This improved system will be described later (The angle of view for a CRT or PDP is 180º.) Vertical Angle of View Horizontal Angle of View Fig 21 Angle of View 6-1-2 Response Characteristic The response characteristic of the LCD display is the speed at which the display is refreshed by the input signal (video data signal) If this response characteristic is slow, an afterimage will appear on the screen Therefore, in large screen LCD television, improving this response characteristic becomes very important -21- Improvement Technology of LCD Display Training Manual Principle of LCD 6-2 Angle of View (TN Type) The principle of optical penetration and the interception of the LCD shutter by the arranged direction of cylindrical liquid crystal molecules controls the direction of light Therefore, brightness, hue, and contrast depend on the direction of view of the LCD display The range (angle) where these look normal is called the “angle of view.” The fault of the TN LCD display is that this angle of view is narrow Fig 22 shows that brightness changes depending on the angle the screen with a gray picture is viewed In this figure, the liquid crystal molecule leans diagonally Therefore, the amount of optical penetration will change depending on the angle when watching the screen from the front or the side The brightness becomes different depending on the angle of view Polarized Board Transparent Electrode (Common) Alignment Film Glass Plate Liquid Crystal Molecule Alignment Film Transparent Electrode (Pixel, TFT) Polarized Board Glass Plate Fig 22 Angle of View (TN type) -22- Improvement Technology of LCD Display Training Manual Principle of LCD 6-3 Multi-Domain System The arrangement of the TN LCD display is one directional In this Multi-Domain System, one pixel is divided into two or more different arranged domains Fig 23 shows the example of Multi-Domain System with two domains The quantity of the light per pixel from various angles is equalized by this system Moreover, the angle of view becomes even wider by increasing the number of divisions However, manufacturing is difficult in the rubbing process* ✐ Refer to 2-2 Rubbing-process The brightness of a screen is equalized as macro view Polarized Board Transparent Electrode (Common) Alignment Film Glass Plate Liquid Crystal Molecule Glass Plate Alignment Film Alignment Film (Left) (Right) Transparent Electrode (Pixel, TFT) Polarized Board Fig 23 Multi-Domain System -23- Improvement Technology of LCD Display Training Manual Principle of LCD 6-4 MVA (Multi-domain Vertical Alignment) System In the MVA system, the (alignment) film is arranged so that the liquid crystal molecules are stood vertically The MVA system combines vertical alignment with the Multi-domain system By vertically aligning the liquid crystal molecules, the influence of optical interception is lost, and the angle of view and contrast are improved A type of material is used that causes the liquid crystal molecules to become vertical to the glass plate without supplying voltage (Nega-Nematic liquid crystal*) In the MVA system, attaching the boss by resin and making the liquid crystal molecules stand diagonally on the transparent electrode make multiple alignment domains Therefore, since the rubbing process can be skipped at the alignment film production, manufacturing becomes easier compared with the multidomain system ✐ Generally, a Posi-Nematic system is used that aligns the liquid crystal molecules by supplying voltage Polarized Board Transparent Electrode (Common) Alignment Film Glass Plate Liquid Crystal Molecule (Nega-Nematic) Alignment Film Boss (Left) (Right) Glass Plate Transparent Electrode (Pixel, TFT) Polarized Board Fig 24 MVA (Multi-domain Vertical Alignment) System -24- Improvement Technology of LCD Display Training Manual Principle of LCD 6-5 IPS (In-Plain Switching) System The structure of an IPS system is shown in Fig 25 The pixel and common electrodes are mounted to the transparent film (drive transistor) side and the electric field is generated horizontally to the glass plate With this electric field, the alignment direction of liquid crystal molecules is rotated 90º in parallel to the glass plate In the IPS system, liquid crystal molecules rotate all at once in the horizontal direction Since these liquid crystal molecules not lean like the TN type, there is little change in the picture characteristics (contrast, brightness, hue, etc.) and the angle of view becomes wider However, there are a few problems The quantity of transparent light is reduced, slower response speed, and a white picture becomes a little bluish or yellowish depending on the viewing direction The S-IPS (Super-IPS) type was developed to improve upon these problems In the S-IPS type, the structure of the electrode for driving the liquid crystal molecules becomes a zigzag form, which reduces the change of color, increases the viewing angle to about 160º and has high definition equivalent to a CRT Polarized Board Basic Structure of IPS System Glass Plate (Without Transparent Electrode) Alignment Film Electric Field Transparent Electrode (Pixel) Alignment Film Transparent Electrode (Common) Glass Plate Liquid Crystal Molecule (Vertical) Polarized Board Polarized Board Normally Black Mode Alignment Film Liquid Crystal Molecule (Vertical) Dark (Switch Off) Bright (Switch On) Fig 25 IPS (In-Plain Switching) System -25- Improvement Technology of LCD Display Training Manual Principle of LCD 6-6 Optically Compensated Film By using the optically compensated film, the phase shift of the STN type of LCD display is corrected, and the angle of view and contrast are improved (Refer to 4-3 Triple STN Type.) Three methods for attaching the optically compensated film are shown in Fig 26 sheet / side Polarized Board Compensated Film Liquid Crystal Polarized Board sheets / side sheets / sides Polarized Board Compensated Film Compensated Film Polarized Board Compensated Film Liquid Crystal Polarized Board Liquid Crystal Polarized Board Compensated Film Fig 26 Optically Compensated Film 6-7 OCB (Optically Compensated Birefringence) System The OCB system combines the bend-alignment system where the liquid crystal molecules are bent and aligned between the upper and lower boards and optically compensation film This system has the features of increased angle of view and quicker response speeds However, bend-alignment is difficult to make uniform and stable Polarized Board Optically Compensated Film Transparent Electrode (Common) Glass Plate Alignment Film Liquid Crystal Molecule Alignment Film Transparent Electrode (Pixel, TFT) Polarized Board Glass Plate Fig 27 OCB System -26- Improvement Technology of LCD Display Training Manual Principle of LCD 6-8 Improvement of Response Speed 6-8-1 Inpulse System In order to reduce afterimage and dim outline, there is the system that has the backlight blinked for every writing of one picture or an all black picture in inserted in the fixed cycle It is called the “Inpulse System.” For example, with the system called “Super Inpulse System,” the black data is written in every 1/60 second, and the afterimage and the ghosts are reduced With the usual LCD panel, since the picture is displayed continuously, the front picture becomes dim as the afterimage In the inpulse system, by inserting black data between the picture data, the afterimage is reduced and the high-speed response is improved Black Data Fig 28 Inpulse System Picture Data 6-8-2 FFD (Feed Forward Driving) System Over-Shoot Waveform (Normal) Voltage Voltage The response speed of LCD brightness can be improved by adding over-shoot characteristic to the data line voltage Fig 29 shows the actual overdrive circuit used in a digital drive system Waveform with Over-Shoot Time Time Response Time Brightness Brightness Response Time (By Overdrive Circuit) Time Voltage Voltage Time Time Time Overdrive Circuit Drive Circuit (Normal) Fig 29 Overdrive Circuit -27- ■ Appendix Training Manual Principle of LCD Appendix 7-1 Backlight An LCD panel does not emit light itself For the display, a light source is required, and normally fluorescent lights are used for the backlight of the LCD television The backlight consists of fluorescent lights, a reflective plate, and a diffusion sheet (or board) Fig 30 shows the structure and photograph of 30V and 15V LCD televisions backlights 30V Type LCD Panel Fluorescent Lights (30V: 16pcs) Diffusion Sheet (Board) Reflective Plate 15V Type LCD Panel Fluorescent Lights (15V: 2pcs, 20V:3pcs) Diffusion Sheet Reflective Plate Fig 30 Backlight -28- Appendix Training Manual Principle of LCD 7-2 LVDS Circuit (1) LVDS Interface For transmitting the video signal information, an interface circuit with an LVDS (Low Noise Differential Signaling) standard is used, which has the merit of low noise, high speed operation by a small amplitude, and low power consumption The LVDS cable connects the transmitter in the driving circuit and the receiver in the module Fig 31 LVDS Interface Transmitter (Driving Circuit) 100Ω Terminated 3.5mA Receiver (LCD Panel) LVDS Cable 1.2V 345/200mV (2) Driving Circuit Fig 32 shows the block diagrams of a panel driving circuit The final video information (signal) from the video processor (for example pixelworks) is transmitted to the LCD panel module through an LVDS cable Fig 32 Block Diagrams of Panel Driving Circuit Video Processor (pixelworks) LVDS Transmitter TxOUT TxIN Part of Panel Display (in the module) DATA (LVDS) LVDS Receiver RxIN RxOUT R R G G B B Vsync Vsync Hsync Hsync BLANK BLANK PARITY PARITY PDWN DCLK TxCLKIN DCLK CLOCK (LVDS) -29- LVDS RxCLKOUT LCD Module Part of (Panel) Driving Circuit Appendix Training Manual Principle of LCD 7-3 Block Diagram Example (1) CLT-1583 R Speaker (R) U45 R Audio AMP LA4263 10 Tuner Board 30 S_CLK / SIN_OUT/ ENABLE_IN / ENABLE_OUT V33D DRO [0-7] Video Decoder VY [0-7] V L R L_PC 11 L2 GBE [0-7] VCPU 33 37 Flash ROM U30 8Mbits V33D AVDD PVDD R V L R Y Cb Cr G H Component AV2 Input B_PC Red_PC AV1 Input THC63LVDM83A 54 30 48 31 43 R2 CVBS2 R1 V L R S Monitor Output CVBS1 SY1 DBO [0-7] MENORY DATA Graphic A/D AD9883 R_PC 16 L1 SC1 S1 R_OUT L_OUT CVBS_OUT AV Switch U46 CXA2089Q 33 30 32 LVDS Interface DGO [0-7] U6 18 34 V33 GGE [0-7] 74 71 Main Scaler / (Main)CPU PW113-10Q PIXELWORKS VUV [0-7] VPC3230D 40 43 45 41 39 IC1 U36 INPUT_Y INPUT_Cb/Pb INPUT_Cr/Pr CVBS 47 48 46 VCPU 33/18 U19 SELECTED_C 72 AUDIO_L AUDIO_R L_TV R_TV SELECTED_Y CC_R CC_G CC_B V_TV Main Board NJW1138M Tuner / IF TMQJ8 +9V LCD Panel Audio Processor IIC +CONTROL 17 Speaker (L) GRE [0-7] Sub CPU M37272M6 16 HS_PC G_PC VS_PC +9V U101 TU201 L U44 23 RX CLK+/- R Headphone (J26) L RX IN+/-[0-3] L +12V B V D-SUB Fig 33 Block Diagram: CLT-1583 PC Input (2) CLT-2053 R Speaker (R) U45 R Audio AMP LA4263 10 R +9V Sub CPU M37272M6 16 Audio Processor 30 Tuner / IF TMQJ8 47 48 46 41 39 74 71 Main Scaler / (Main)CPU PW113-10Q PIXELWORKS VUV [0-7] VPC3230D DGO [0-7] DBO [0-7] LCD Panel U36 MENORY DATA U30 VCPU 33 37 Flash ROM 8Mbits 40 43 45 V L R Monitor Output S V L R AV1 Input 11 V L R AV2 Input R3 R2 L2 CVBS2 16 R1 CVBS1 L1 SC1 SY1 R_OUT 33 30 32 S1 AV Switch U46 CXA2089Q L3 34 CVBS_OUT VY [0-7] 18 L_OUT +9V DRO [0-7] Video Decoder INPUT_Y INPUT_Cb/Pb INPUT_Cr/Pr CVBS 72 VCPU 33/18 U19 SELECTED_C AUDIO_R SELECTED_Y CC_R CC_G CC_B L_TV R_TV S_CLK / SIN_OUT/ ENABLE_IN / ENABLE_OUT V33D V_TV 17 Speaker (L) Main Board NJW1138M IIC +CONTROL AUDIO_L U101 TU201 L U44 23 Tuner Board Headphone (J26) L L +14V L R Y Cb Cr Audio Board Component Fig 34 Block Diagram: CLT-2053 AV3 Input -30- Appendix Training Manual Principle of LCD (3) CLT1554 / CLT2054 AV1 AV1_Y S Video Composite Video Audio AV1_CV IC1001 IC801 TV_CV Video SW CPU AV1/TV_Y/CV AV2 AV2_V AV3_Y Composite Video Audio IC1002 36 37 22 23 OSD_HD VD (For Caption) 12 10 5V 13 11 OSD_HD VD 154 153 85 IC2001 AD_Y 48 Audio AD_Cr 54 IC301 IC4101 AD_HS IP Converter Screen Controller (Y/UV) 38 AD_VS IIC Bus IC361 SDRAM Sync Separation 15 R: Tuner IF Sound Multiplex AV3_L/R L: 28 R: R: TV_L/R L: 27 IIC Bus LCD PANEL (15V) AD_CLAMP 28 AV1_L/R L: 30 R: AV2_L/R L: 29 IC781 LVDS Transmitter IC1701 TV (A201) R/G/B (0-7) 31 16 AD_Y 26 LCD PANEL (20V) (For 15V) IIC Bus AD_Cb 43 A/D Converter 30 (For 20V) R/G/B (0-7) IIC Bus AD_R/G (0-7) (480p) 152 151 150 148 149 R G B Y I DEC_Y/C (0-7) with AV3_Cb 94 Y/C Separation (480i) Component Video OSD_CC DD Converter 3.3V AV3_Cr 92 Digital Decoder AV3 18 19 20 21 16 R G B Y I IC871 SEL_Y/CV Video SW AV1_C 90 IIC Bus IC001 10 SEL_R 16 R-OUT (+) 13 Audio SW Audio Control 21 SEL_L Surround IC101 15 R-OUT (-) SPEAKER (Right) Audio AMP 24 L-OUT (+) 25 L-OUT (-) IIC Bus SPEAKER (Left) Fig 35 Block Diagram: CLT1554 / CLT2054 -31- SEP / 2004 Printed in Japan SANYO Electric Co., Ltd ... figure Fig Construction of LCD Display (Transparent Type TFT LCD) -3- Construction of LCD Display Training Manual Principle of LCD 1-3 Main component of LCD Display LCD Shutter Supplying voltage... LCD Layer Module Optically Compensated Film Fig 11 Type of LCD Display Construction -13- ■ System of LCD Display Training Manual Principle of LCD System of LCD Display 5-1 Dot-Matrix System LCD. .. Filter LCD Shutter LCD Shutter Color Panel Monochrome Panel Fig 13 Colorization of LCD Display -15- System of LCD Display Training Manual Principle of LCD 5-3 Drive System The drive systems for LCD