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( DOC No. HX8250-A01-DS )
HX8250-A01
960CH TFT LCD Source Driver with TCON
Version 01 January, 2008
-P .1-
Himax Confidential
January, 2008
This information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclod in whole or in part without prior written permission of Himax.
1. General Description
HX8250-A01 is a 960-channel outputs source driver with TCON, OSD mixer, and 3-wire Serial Port Interface. It also supports 2-chip cascade mode to extend source channel to be 1920 channels.
The interface follows digital 8-bit rial/24-bit parallel RGB, CCIR601 and CCIR656 input format. The TCON generates the 960x240, 1920x240, and 1920x480 resolution and provides horizontal and vertical control timing to source driver and gate driver. It also supports dithering feature, apply source driver with 6-bit DAC to perform 8-bit resolution 256 gray scales.见路不走
The source driver receives 6-bit by 3 dots of digital display data per clock from TCON and generates corresponding 64-level gray scale voltage output. Since the output circuit of this source driver incorporates an operational amplifier with low power dissipation, and performs wide voltage supply range and small output deviation. Therefore, a high quality display with less crosstalk can be achieved.
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HX8250-A01
960CH TFT LCD Source Driver with TCON
Version 01
January, 2008
-P .2-Himax Confidential January, 2008
This information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclod in whole or in part without prior written permission of Himax.
2. Features
TCON z Support display resolution 960x240, 1920x240, and 1920x480
z Support digital 8-bit rial RGB, CCIR601, and CCIR656 input mode
z Support digital 24-bit parallel RGB input mode
z Internal dithering 8-bit data to 6-bit data for Source Driver Circuit z Only support stripe types of panel group z Operation frequency: 40 MHz max z Support NTSC/PAL TV system
z OSD overlay supported in CCIR601and CCIR656 input mode z Provide source and gate drivers control timing z Provide flip and mirror scan control z
Operation Voltage Level 2.7V to 3.6V
Source Driver
z 960 channels output source driver for TFT LCD panel z Dynamic output range: 0.1 to VDD-0.1V z Voltage deviation of outputs: ±20mV z Dot inversion driving scheme z Right and left shift capability z LCD power: 6.5 to 13.5V
Others
z COG package
-P .3-Himax Confidential January, 2008
This information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclod in whole or in part without prior written permission of Himax.
3. Block Diagram
3.1 Whole chip block diagram
TCON
CLK D0[7:0]D1[7:0]D2[7:0]HS VS DEN SPENA SPDA SPCK
OSD_R, G, B
OSD_EN OSD_CLK OSD_HS OSD_VS RESETB MASL
IF[2:0]OSD Decoder 3-Wire Decoder
Gamma
V1~V 10SO [1:960]
DD0[5:0]DD1[5:0]DD2[5:0]CKH STH OEH RL STB POL CKV OEV
STVD/STVU UDB UDP
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Source Driver
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Figure 3. 1 HX8250-A01 block diagram
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P .4-Himax Confidential January, 2008
This information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclod in whole or in part without prior written permission of Himax.
3.2 Source driver block diagram
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STH
RL CKH Level Shifter
D/A Converter
Buffer
DD00~DD05Latch
POL OEH
V 1 ~ V10
320-bit Bi-directional Shift Register
666
DD10~DD15DD20~DD25
Figure 3. 2 Source driver block diagram
